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<html>
<head>
<title>Nuttx Porting Manual</title>
<meta name="author" content="Gregory Nutt">
</head>
<body>
<center>
<big><b>
<p>Nuttx Operating System</p>
<p>Porting Guide</p>
</b></big>
<p><small>by</small></p>
<p>Gregory Nutt</p>
<p><small>Last Update: February 8, 2007</small></p>
</center>
<center><h1>Table of Contents</h1></center>
<li>1.0 <a href="#Introduction">1.0 Introduction</a></li>
<li>2.0 <a href="#DirectoryStructure">Directory Structure</a></li>
<ul>
<li>2.1 <a href="#DirStructDocumentation">Documentation</a></li>
<l1>2.2 <a href="#DirStructArch">arch</a></li>
<li>2.3 <a href="#DirStructDrivers">drivers</a></li>
<li>2.4 <a href="#DirStructExamples">examples</a></li>
<li>2.5 <a href="#DirStructFs">fs</a></li>
<li>2.6 <a href="#DirStructInclude">include</a></li>
<li>2.7 <a href="#DirStructLib">lib</a></li>
<li>2.8 <a href="#DirStructMm">mm</a></li>
<li>2.9 <a href="#DirStructSched">sched</a></li>
<li>2.10 <a href="#DirStructDrivers">tools</a></li>
</ul>
<li>3.0 <a href="#DirectoryConfiAndBuild">Configuring and Building</a></li>
<hr>
<h1>1.0 <a name="Introduction">Introduction</a></h1>
<p><b>Overview</b>
This document provides and overview of the Nuttx build and configuration
logic and provides hints for the incorporation of new processor/board archectures
into the build.
</p>
<p>
See also arch/README.txt.
</p>
<p><b>General Philosophy</b>.
<hr>
<h1>2.0 <a name="DirectoryStructure">Directory Structure</a></h1>
<p>The general directly layout for Nuttx is very similar to the directory structure
of the Linux kernel -- at least at the most superficial layers.
At the top level is the main makefile and a series of sub-directories identified
below and discussed in the following paragraphs:</p>
<ul><pre>
.
|-- Makefile
|-- <a href="#DirStructDocumentation">Documentation</a>
| `-- <i>(documentation files)</i>
|-- <a href="#DirStructArch">arch</a>
| |-- <i>(architecture)</i>
| | |-- Make.defs
| | |-- defconfig
| | |-- include
| | |-- setenv.sh
| | `-- src
| `-- <i>(other architectures)</i>
|-- <a href="#DirStructDrivers">drivers</a>
| |-- Makefile
| `-- <i>(driver source files)</i>
|-- <a href="#DirStructExamples">examples</a>
| `-- <i>(example)</i>
| |-- Makefile
| `-- <i>(example source files)</i>
|-- <a href="#DirStructFs">fs</a>
| |-- Makefile
| `-- <i>(fs source files)</i>
|-- <a href="#DirStructInclude">include</a>
| |-- <i>(standard header files)</i>
| |-- nuttx
| | `-- <i>(nuttx specific header files)</i>
| `- sys
| | `-- <i>(more standard header files)</i>
|-- <a href="#DirStructLib">lib</a>
| |-- Makefile
| `-- <i>(lib source files)</i>
|-- <a href="#DirStructMm">mm</a>
| |-- Makefile
| `-- <i>(mm source files)</i>
|-- <a href="#DirStructSched">sched</a>
| |-- Makefile
| `-- <i>(sched source files)</i>
`-- <a href="#DirStructDrivers">tools</a>
|-- Makefile.mkconfig
|-- configure.sh
|-- mkconfig.c
|-- mkdeps.sh
`-- zipme
</pre></ul>
<h2>2.1 <a name="DirStructDocumentation">Documentation</a></h2>
<h2>2.2 <a name="DirStructArch">arch</a></h2>
<h2>2.3 <a name="DirStructDrivers">drivers</a></h2>
<h2>2.4 <a name="DirStructExamples">examples</a></h2>
<h2>2.5 <a name="DirStructFs">fs</a></h2>
<h2>2.6 <a name="DirStructInclude">include</a></h2>
<h2>2.7 <a name="DirStructLib">lib</a></h2>
<h2>2.8 <a name="DirStructMm">mm</a></h2>
<h2>2.9 <a name="DirStructSched">sched</a></h2>
<h2>2.10 <a name="DirStructDrivers">tools</a></h2>
<hr>
<h1>3.0 <a name="DirectoryConfiAndBuild">Configuring and Building</a></h1>
</body>
</html>

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############################################################
# Makefile
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################
TOPDIR = ${shell pwd}
-include ${TOPDIR}/.config
-include ${TOPDIR}/Make.defs
ARCH_DIR = arch/$(CONFIG_ARCH)
ARCH_SRC = $(ARCH_DIR)/src
SUBDIRS = sched lib $(ARCH_SRC) mm fs drivers examples/$(CONFIG_EXAMPLE)
OBJS = $(ARCH_SRC)/up_head.o
LIBGCC = ${shell $(CC) -print-libgcc-file-name}
LIBS = sched/libsched.a $(ARCH_SRC)/libarch.a mm/libmm.a \
fs/libfs.a drivers/libdrivers.a lib/liblib.a \
examples/$(CONFIG_EXAMPLE)/lib$(CONFIG_EXAMPLE).a
LDLIBS = -lsched -larch -lmm -lfs -ldrivers -llib -l$(CONFIG_EXAMPLE) $(LIBGCC) $(EXTRA_LIBS)
BIN = nuttx
LDFLAGS += -Lsched -Llib -L$(ARCH_SRC) -Lmm -Lfs -Ldrivers -Lexamples/$(CONFIG_EXAMPLE)
all: $(BIN)
.PHONY: clean context clean_context distclean
tools/mkconfig:
$(MAKE) -C tools -f Makefile.mkconfig TOPDIR=$(TOPDIR) mkconfig
include/nuttx/config.h: $(ARCH_DIR)/defconfig tools/mkconfig
tools/mkconfig $(ARCH_DIR) > include/nuttx/config.h
include/arch: include/nuttx/config.h
ln -sf $(TOPDIR)/$(ARCH_DIR)/include include/arch
context: check_context include/nuttx/config.h include/arch
clean_context:
rm -f include/nuttx/config.h
rm -f include/arch
check_context:
@if [ ! -e ${TOPDIR}/.config -o ! -e ${TOPDIR}/Make.defs ]; then \
echo "" ; echo "Nuttx has not been configured:" ; \
echo " cd tools; ./configure.sh <target>\n" ; echo "" ;\
exit 1 ; \
fi
sched/libsched.a: context
$(MAKE) -C sched TOPDIR=$(TOPDIR) libsched.a
lib/liblib.a: context
$(MAKE) -C lib TOPDIR=$(TOPDIR) liblib.a
$(ARCH_SRC)/libarch.a: context
$(MAKE) -C $(ARCH_SRC) TOPDIR=$(TOPDIR) libarch.a
$(ARCH_SRC)/up_head.o: context
$(MAKE) -C $(ARCH_SRC) TOPDIR=$(TOPDIR) up_head.o
mm/libmm.a: context
$(MAKE) -C mm TOPDIR=$(TOPDIR) libmm.a
fs/libfs.a: context
$(MAKE) -C fs TOPDIR=$(TOPDIR) libfs.a
drivers/libdrivers.a: context
$(MAKE) -C drivers TOPDIR=$(TOPDIR) libdrivers.a
examples/$(CONFIG_EXAMPLE)/lib$(CONFIG_EXAMPLE).a: context
$(MAKE) -C examples/$(CONFIG_EXAMPLE) TOPDIR=$(TOPDIR) lib$(CONFIG_EXAMPLE).a
$(BIN): context depend $(OBJS) $(LIBS)
ifeq ($(CONFIG_ARCH),sim)
$(CC) $(LDFLAGS) -o $@ $(OBJS) $(LIBS) $(LDLIBS)
$(NM) $(BIN) | grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | sort > System.map
else
$(LD) --entry=__start $(LDFLAGS) -o $@ $(OBJS) $(LIBS) $(LDLIBS)
$(NM) $(BIN) | grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | sort > System.map
@export vflashstart=`$(OBJDUMP) --all-headers $(BIN) | grep _vflashstart | cut -d' ' -f1`; \
if [ ! -z "$$vflashstart" ]; then \
$(OBJCOPY) --adjust-section-vma=.vector=0x$$vflashstart $(BIN) $(BIN).flashimage; \
mv $(BIN).flashimage $(BIN); \
fi
endif
depend:
@for dir in $(SUBDIRS) ; do \
$(MAKE) -C $$dir TOPDIR=$(TOPDIR) depend ; \
done
clean:
@for dir in $(SUBDIRS) ; do \
$(MAKE) -C $$dir TOPDIR=$(TOPDIR) clean ; \
done
$(MAKE) -C tools -f Makefile.mkconfig TOPDIR=$(TOPDIR) clean
$(MAKE) -C mm -f Makefile.test TOPDIR=$(TOPDIR) clean
rm -f $(BIN) context mm_test System.map *~ *.flashimage
distclean: clean clean_context
@for dir in $(SUBDIRS) ; do \
$(MAKE) -C $$dir TOPDIR=$(TOPDIR) distclean ; \
done
$(MAKE) -C examples/$(CONFIG_EXAMPLE) TOPDIR=$(TOPDIR) distclean
rm -f Make.defs setenv.sh .config

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Architecture-Specific Code
^^^^^^^^^^^^^^^^^^^^^^^^^^
The file include/nuttx/arch.h identifies all of the APIs that must
be provided by the architecture specific logic. (It also includes
arch/<arch-name>/arch.h as described below).
Directory Structure
^^^^^^^^^^^^^^^^^^^
Thie arch directory contains architecture specific logic. Each aructure
provide a a subdirectory <arch-name>under arch/ with the folling characteristics:
<arch-name>
|-- Make.defs
|-- defconfig
|-- setenv.sh
|-- include
| |-- arch.h
| |-- irq.h
| `-- types.h
`-- src
|-- Makefile
`-- (architecture-specific source files)
Summary of Files
^^^^^^^^^^^^^^^^
Make.defs -- This makefile fragment provides architecture and
tool-specific build options. It will be included by all other
makefiles in the build (once it is installed). This make fragment
should define:
Tools: CC, LD, AR, NM, OBJCOPY, OBJDUMP
Tool options: CFLAGS, LDFLAGS
When this makefile fragment runs, it will be passed TOPDIR which
is the path to the root directory of the build. This makefile
fragment may include ${TOPDIR}/.config to perform configuration
specific settings. For example, the CFLAGS will most likely be
different if CONFIG_DEBUG=y.
defconfig -- This is a configuration file similar to the Linux
configuration file. In contains varialble/value pairs like:
CONFIG_VARIABLE=value
This configuration file will be used at build time:
(1) as a makefile fragment included in other makefiles, and
(2) to generate include/nuttx/config.h which is included by
most C files in the system.
The following variables are recognized by the build (you may
also include architecture-specific settings).
Architecture selection:
CONFIG_ARCH - identifies the arch subdirectory
CONFIG_ARCH_name - for use in C code
General OS setup
CONFIG_EXAMPLE - identifies the subdirectgory in examples
that will be used in the build
CONFIG_DEBUG - enables built-in debug options
CONFIG_DEBUG_VERBOSE - enables verbose debug output
CONFIG_HAVE_LOWPUTC - architecture supports low-level, boot
time console output
CONFIG_RR_INTERVAL - The round robin timeslice will be set
this number of milliseconds; Round robin scheduling can
be disabled by setting this value to zero.
CONFIG_SCHED_INSTRUMENTATION - enables instrumentation in
scheduler to monitor system performance
CONFIG_TASK_NAME_SIZE - Spcifies that maximum size of a
task name to save in the TCB. Useful if scheduler
instrumentation is selected. Set to zero to disable.
CONFIG_START_YEAR, CONFIG_START_MONTH, CONFIG_START_DAY -
Used to initialize the internal time logic.
CONFIG_JULIAN_TIME - Enables Julian time conversions
CONFIG_DEV_CONSOLE - Set if architecture-specific logic
provides /dev/console. Enables stdout, stderr, stdin.
Allow for artchitecture optimized implementations
The architecture can provide optimized versions of the
following to improve sysem performance
CONFIG_ARCH_MEMCPY, CONFIG_ARCH_MEMCMP, CONFIG_ARCH_MEMMOVE
CONFIG_ARCH_MEMSET, CONFIG_ARCH_STRCMP, CONFIG_ARCH_STRCPY
CONFIG_ARCH_STRNCPY, CONFIG_ARCH_STRLEN, CONFIG_ARCH_BZERO
CONFIG_ARCH_KMALLOC, CONFIG_ARCH_KZMALLOC, CONFIG_ARCH_KFREE
General Compile environment setup
CONFIG_HAVE_LONG_LONG - enable if your architecture supports
long long types and if you plan to use them
Sizes of configurable things (0 disables)
CONFIG_NPTHREAD_KEYS - The number of items of thread-
specific data that can be retained
CONFIG_NFILE_DESCRIPTORS - The maximum number of file
descriptors (one for each open)
CONFIG_NFILE_STREAMS - The maximum number of streams that
can be fopen'ed
CONFIG_STDIO_BUFFER_SIZE - Size of the buffer to allocate
on fopen. (Only if CONFIG_NFILE_STREAMS > 0)
CONFIG_NUNGET_CHARS - Number of characters that can be
buffered by ungetc() (Only if CONFIG_NFILE_STREAMS > 0)
CONFIG_PREALLOC_MQ_MSGS - The number of pre-allocated message
structures. The system manages a pool of preallocated
message structures to minimize dynamic allocations
CONFIG_MQ_MAXMSGSIZE - Message structures are allocated with
a fixed payload size given by this settin (does not include
other message structure overhead.
CONFIG_PREALLOC_WDOGS - The number of pre-allocated watchdog
structures. The system manages a pool of preallocated
watchdog structures to minimize dynamic allocations
Stack and heap information
CONFIG_BOOT_FROM_FLASH - Some configurations support XIP
operation from FLASH.
CONFIG_STACK_POINTER - The initial stack pointer
CONFIG_PROC_STACK_SIZE - The size of the initial stack
CONFIG_PTHREAD_STACK_MIN - Minimum pthread stack size
CONFIG_PTHREAD_STACK_DEFAULT - Default pthread stack size
CONFIG_HEAP_BASE - The beginning of the heap
CONFIG_HEAP_SIZE - The size of the heap
setenv.sh -- This is a script that you can include that will be installed at
the toplevel of the directory structure and can be sourced to set any
necessary environment variables.
include/arch.h
This is a hook for any architecture specific definitions that may
be needed by the system. It is included by include/nuttx/arch.h
include/types.h
This provides architecture/toolchain-specific definitions for
standard types. This file should typedef:
sbyte, ubyte, uint8, boolean, sint16, uint16, sint32, uint32, sint64, uint64
This file will be included by include/sys/types.h and be made
available to all files.
include/irq.h
This file needs to define some architecture specific functions (usually
inline) and structure. These include:
- struct xcptcontext. This structures represents the saved context
of a thread.
- static inline uint32 irqsave(void) -- Used to disable
all interrupts.
- static inline void irqrestore(uint32 flags) -- Used to
restore interrupts enables to the same state as before irqsave
was called.
This file must also define NR_IRQS, the total number of IRQs supported
by the board.
src/Makefile
This makefile will be executed to build the targets src/libup.a and
src/up_head.o. The up_head.o file holds the entry point into the system
(power-on reset entry point, for example). It will be used in
the final link with libup.a and other system archives to generate the
final executable.
Configuring NuttX
^^^^^^^^^^^^^^^^^
Configuring NuttX requires only copying
arch/<arch-name>/Make.def to ${TOPDIR}/Make.defs
arch/<arch-name>/setenv.sh to ${TOPDIR}/setenv.sh
arch/<arch-name>/defconfig to ${TOPDIR}/.config
There is a script that automates these steps. The following steps will
accomplish the same configuration:
cd tools
./configure.sh <arch-name>

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############################################################
# Make.defs
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################
include ${TOPDIR}/.config
ifeq ("${CONFIG_DEBUG}","y")
ARCHOPTIMIZATION = -g
else
ARCHOPTIMIZATION = -Os -fno-strict-aliasing -fno-strength-reduce \
-fomit-frame-pointer
endif
ARCHCPUFLAGS = -mapcs-32 -mcpu=arm7tdmi -msoft-float
ARCHPICFLAGS = -fpic
ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
ARCHDEFINES =
ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
ARCHSCRIPT = -T$(TOPDIR)/arch/$(CONFIG_ARCH)/ld.script
CROSSDEV = arm-elf-
CC = $(CROSSDEV)gcc
LD = $(CROSSDEV)ld
AR = $(CROSSDEV)ar
NM = $(CROSSDEV)nm
OBJCOPY = $(CROSSDEV)objcopy
OBJDUMP = $(CROSSDEV)objdump
CFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
$(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) -pipe
LDFLAGS = $(ARCHSCRIPT)
EXTRA_LIBS =
ifeq ("${CONFIG_DEBUG}","y")
LDFLAGS += -g
endif

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############################################################
# defconfig
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################
#
# architecture selection
#
# CONFIG_ARCH - identifies the arch subdirectory
# CONFIG_ARCH_name - for use in C code
# CONFIG_ROM_VECTORS - unique to arm7tdmi
#
CONFIG_ARCH=c5471
CONFIG_ARCH_C5471=y
CONFIG_ROM_VECTORS=n
#
# General OS setup
#
# CONFIG_EXAMPLE - identifies the subdirectgory in examples
# that will be used in the build
# CONFIG_DEBUG - enables built-in debug options
# CONFIG_DEBUG_VERBOSE - enables verbose debug output
# CONFIG_HAVE_LOWPUTC - architecture supports low-level, boot
# time console output
# CONFIG_RR_INTERVAL - The round robin timeslice will be set
# this number of milliseconds; Round robin scheduling can
# be disabled by setting this value to zero.
# CONFIG_SCHED_INSTRUMENTATION - enables instrumentation in
# scheduler to monitor system performance
# CONFIG_TASK_NAME_SIZE - Spcifies that maximum size of a
# task name to save in the TCB. Useful if scheduler
# instrumentation is selected. Set to zero to disable.
# CONFIG_START_YEAR, CONFIG_START_MONTH, CONFIG_START_DAY -
# Used to initialize the internal time logic.
# CONFIG_JULIAN_TIME - Enables Julian time conversions
# CONFIG_DEV_CONSOLE - Set if architecture-specific logic
# provides /dev/console. Enables stdout, stderr, stdin.
#
CONFIG_EXAMPLE=ostest
CONFIG_DEBUG=y
CONFIG_DEBUG_VERBOSE=n
CONFIG_ARCH_LOWPUTC=n
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_INSTRUMENTATION=n
CONFIG_TASK_NAME_SIZE=0
CONFIG_START_YEAR=2007
CONFIG_START_MONTH=2
CONFIG_START_DAY=13
CONFIG_JULIAN_TIME=n
CONFIG_DEV_CONSOLE=n
#
# Allow for artchitecture optimized implementations
#
# The architecture can provide optimized versions of the
# following to improve sysem performance
#
CONFIG_ARCH_MEMCPY=n
CONFIG_ARCH_MEMCMP=n
CONFIG_ARCH_MEMMOVE=n
CONFIG_ARCH_MEMSET=n
CONFIG_ARCH_STRCMP=n
CONFIG_ARCH_STRCPY=n
CONFIG_ARCH_STRNCPY=n
CONFIG_ARCH_STRLEN=n
CONFIG_ARCH_BZERO=n
CONFIG_ARCH_KMALLOC=n
CONFIG_ARCH_KZMALLOC=n
CONFIG_ARCH_KFREE=n
# General Compile environment setup
#
# CONFIG_HAVE_LONG_LONG - enable if your architecture supports
# long long types and if you plan to use them
CONFIG_HAVE_LONG_LONG=n
#
# Sizes of configurable things (0 disables)
#
# CONFIG_NPTHREAD_KEYS - The number of items of thread-
# specific data that can be retained
# CONFIG_NFILE_DESCRIPTORS - The maximum number of file
# descriptors (one for each open)
# CONFIG_NFILE_STREAMS - The maximum number of streams that
# can be fopen'ed
# CONFIG_STDIO_BUFFER_SIZE - Size of the buffer to allocate
# on fopen. (Only if CONFIG_NFILE_STREAMS > 0)
# CONFIG_NUNGET_CHARS - Number of characters that can be
# buffered by ungetc() (Only if CONFIG_NFILE_STREAMS > 0)
# CONFIG_PREALLOC_MQ_MSGS - The number of pre-allocated message
# structures. The system manages a pool of preallocated
# message structures to minimize dynamic allocations
# CONFIG_MQ_MAXMSGSIZE - Message structures are allocated with
# a fixed payload size given by this settin (does not include
# other message structure overhead.
# CONFIG_PREALLOC_WDOGS - The number of pre-allocated watchdog
# structures. The system manages a pool of preallocated
# watchdog structures to minimize dynamic allocations
#
CONFIG_NPTHREAD_KEYS=4
CONFIG_NFILE_DESCRIPTORS=32
CONFIG_NFILE_STREAMS=16
CONFIG_STDIO_BUFFER_SIZE=1024
CONFIG_NUNGET_CHARS=2
CONFIG_PREALLOC_MQ_MSGS=32
CONFIG_MQ_MAXMSGSIZE=32
CONFIG_PREALLOC_WDOGS=32
#
# Stack and heap information
#
# CONFIG_BOOT_FROM_FLASH - Some configurations support XIP
# operation from FLASH.
# CONFIG_STACK_POINTER - The initial stack pointer (arm7tdmi only)
# CONFIG_PROC_STACK_SIZE - The size of the initial stack
# CONFIG_PTHREAD_STACK_MIN - Minimum pthread stack size
# CONFIG_PTHREAD_STACK_DEFAULT - Default pthread stack size
# CONFIG_HEAP_BASE - The beginning of the heap
# CONFIG_HEAP_SIZE - The size of the heap
#
CONFIG_BOOT_FROM_FLASH=n
CONFIG_STACK_POINTER=0x02100000
CONFIG_PROC_STACK_SIZE=0x00001000
CONFIG_PTHREAD_STACK_MIN=256
CONFIG_PTHREAD_STACK_DEFAULT=4096
CONFIG_HEAP_BASE=0x02100000
CONFIG_HEAP_SIZE=0x00100000

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/************************************************************
* arch.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/* This file should never be included directed but, rather,
* only indirectly through nuttx/arch.h
*/
#ifndef __ARCH_C5471_ARCH_H
#define __ARCH_C5471_ARCH_H
/************************************************************
* Included Files
************************************************************/
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Inline functions
************************************************************/
/************************************************************
* Public Types
************************************************************/
/************************************************************
* Public Variables
************************************************************/
/************************************************************
* Public Function Prototypes
************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ARCH_C5471_ARCH_H */

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/************************************************************
* irq.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/* This file should never be included directed but, rather,
* only indirectly through nuttx/irq.h
*/
#ifndef __ARCH_C5471_IRQ_H
#define __ARCH_C5471_IRQ_H
/************************************************************
* Included Files
************************************************************/
/************************************************************
* Definitions
************************************************************/
/* IRQ Stack Frame Format:
*
* Context is always saved/restored in the same way:
*
* (1) stmia rx, {r0-r3, r12}
* (2) stmia rx, (cpsr, r4-r11, r13-r14}
*
* This results in the following set of indices that
* can be used to access individual registers in the
* xcp.regs array:
*/
#define JB_R0 (0)
#define JB_R1 (1)
#define JB_R2 (2)
#define JB_R3 (3)
#define JB_R12 (4)
#define XCPTCONTEXT_IRQ_REGS (5)
#define XCPTCONTEXT_UOFFSET (4 * XCPTCONTEXT_IRQ_REGS)
#define JB_CPSR (0 + XCPTCONTEXT_IRQ_REGS)
#define JB_R4 (1 + XCPTCONTEXT_IRQ_REGS)
#define JB_R5 (2 + XCPTCONTEXT_IRQ_REGS
#define JB_R6 (3 + XCPTCONTEXT_IRQ_REGS)
#define JB_R7 (4 + XCPTCONTEXT_IRQ_REGS)
#define JB_R8 (5 + XCPTCONTEXT_IRQ_REGS)
#define JB_R9 (6 + XCPTCONTEXT_IRQ_REGS)
#define JB_R10 (7 + XCPTCONTEXT_IRQ_REGS)
#define JB_R11 (8 + XCPTCONTEXT_IRQ_REGS)
#define JB_R13 (9 + XCPTCONTEXT_IRQ_REGS)
#define JB_R14 (10 + XCPTCONTEXT_IRQ_REGS)
#define JB_R15 /* Not saved */
#define XCPTCONTEXT_USER_REG (11)
#define XCPTCONTEST_REGS (XCPTCONTEXT_USER_REG+XCPTCONTEXT_IRQ_REGS)
#define XCPTCONTEXT_SIZE (4 * XCPTCONTEST_REGS)
#define JB_A1 JB_R0
#define JB_A2 JB_R1
#define JB_A3 JB_R2
#define JB_A4 JB_R3
#define JB_V1 JB_R4
#define JB_V2 JB_R5
#define JB_V3 JB_R6
#define JB_V4 JB_R7
#define JB_V5 JB_R8
#define JB_V6 JB_R9
#define JB_V7 JB_R10
#define JB_SB JB_R9
#define JB_SL JB_R10
#define JB_FP JB_R11
#define JB_IP JB_R12
#define JB_SP JB_R13
#define JB_LR JB_R14
#define JB_PC JB_R15
/* C5471 Interrupts */
#define C5471_IRQ_TIMER0 0
#define C5471_IRQ_TIMER1 1
#define C5471_IRQ_TIMER2 2
#define C5471_IRQ_GPIO0 3
#define C5471_IRQ_ETHER 4
#define C5471_IRQ_KBGPIO_0_7 5
#define C5471_IRQ_UART 6
#define C5471_IRQ_UART_IRDA 7
#define C5471_IRQ_KBGPIO_8_15 8
#define C5471_IRQ_GPIO3 9
#define C5471_IRQ_GPIO2 10
#define C5471_IRQ_I2C 11
#define C5471_IRQ_GPIO1 12
#define C5471_IRQ_SPI 13
#define C5471_IRQ_GPIO_4_19 14
#define C5471_IRQ_API 15
#define C5471_IRQ_WATCHDOG C5471_IRQ_TIMER0
#define C5471_IRQ_SYSTIMER C5471_IRQ_TIMER1
#define NR_IRQS (C5471_IRQ_API+1)
/************************************************************
* Public Types
************************************************************/
/* This struct defines the way the registers are stored. We
* need to save:
*
* 1 CPSR
* 7 Static registers, v1-v7 (aka r4-r10)
* 1 Frame pointer, fp (aka r11)
* 1 Stack pointer, sp (aka r13)
* 1 Return address, lr (aka r14)
* ---
* 11 (XCPTCONTEXT_USER_REG)
*
* On interrupts, we also need to save:
* 4 Volatile registers, a1-a4 (aka r0-r3)
* 1 Scratch Register, ip (aka r12)
*---
* 5 (XCPTCONTEXT_IRQ_REGS)
*
* For a total of 17 (XCPTCONTEST_REGS)
*/
#ifndef __ASSEMBLY__
struct xcptcontext
{
/* The following function pointer is non-zero if there
* are pending signals to be processed.
*/
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of LR and CPSR used during
* signal processing.
*/
uint32 saved_lr;
uint32 saved_cpsr;
/* Register save area */
uint32 regs[XCPTCONTEST_REGS];
};
#endif
/************************************************************
* Inline functions
************************************************************/
#ifndef __ASSEMBLY__
/* Save the current interrupt enable state & disable IRQs */
static inline uint32 irqsave(void)
{
unsigned long flags;
unsigned long temp;
__asm__ __volatile__
(
"\tmrs %0, cpsr\n"
"\torr %1, %0, #128\n"
"\tmsr cpsr_c, %1"
: "=r" (flags), "=r" (temp)
:
: "memory");
return flags;
}
/* Restore saved IRQ & FIQ state */
static inline void irqrestore(uint32 flags)
{
__asm__ __volatile__
(
"msr cpsr_c, %0"
:
: "r" (flags)
: "memory");
}
static inline void system_call(swint_t func, uint32 parm1,
uint32 parm2, uint32 parm3)
{
__asm__ __volatile__
(
"mov\tr0,%0\n\t"
"mov\tr1,%1\n\t"
"mov\tr2,%2\n\t"
"mov\tr2,%3\n\t"
"swi\t0x900001\n\t"
:
: "r" ((long)(func)), "r" ((long)(parm1)),
"r" ((long)(parm2)), "r" ((long)(parm3))
: "r0", "r1", "r2", "r3", "lr");
}
#endif
/************************************************************
* Public Variables
************************************************************/
/************************************************************
* Public Function Prototypes
************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif /* __ARCH_C5471_IRQ_H */

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/************************************************************
* types.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/* This file should never be included directed but, rather,
* only indirectly through sys/types.h
*/
#ifndef __ARCH_C5471_TYPES_H
#define __ARCH_C5471_TYPES_H
/************************************************************
* Included Files
************************************************************/
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Type Declarations
************************************************************/
typedef char sbyte;
typedef unsigned char ubyte;
typedef unsigned char uint8;
typedef unsigned char boolean;
typedef short sint16;
typedef unsigned short uint16;
typedef int sint32;
typedef unsigned int uint32;
typedef long long sint64;
typedef unsigned long long uint64;
/************************************************************
* Global Function Prototypes
************************************************************/
#endif /* __ARCH_C5471_TYPES_H */

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/************************************************************
* ld.script
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
OUTPUT_ARCH(arm)
ENTRY(_stext)
SECTIONS
{
/* Interrupt vector trampoline and command line parameters
* are provided in IRAM by the rrload bootloader. Vectors will be
* copied into _svectors from _vflashstart.
*/
. = 0xffc00000;
_svectors = ABSOLUTE(.);
/* These are locations in IRAM where the rrload bootloader passes
* information to the running program
*/
. = 0xffc00020;
__KernCommandLineMagicStr = .; /* magic pattern string == "kcmdline-->" */
. = 0xffc0002C; /* advance to .+strlen("kcmdline-->")+1 */
__KernCommandLineOverride = .; /* location of kernel command line string */
. = 0xffc00100;
__EtherMACMagicStr = .; /* magic pattern string == "etherMAC-->" */
. = 0xffc0010C; /* advance to .+strlen("etherMAC-->")+1 */
__EtherMAC = .;
/* The OS entry point is here */
. = 0x01030000;
.text : {
_stext = ABSOLUTE(.);
*(.text)
*(.fixup)
*(.gnu.warning)
*(.rodata)
*(.glue_7)
*(.glue_7t)
*(.got) /* Global offset table */
_etext = ABSOLUTE(.);
}
_eronly = ABSOLUTE(.); /* See below */
. = ALIGN(4096);
.data : {
_sdata = ABSOLUTE(.);
*(.data)
CONSTRUCTORS
_edata = ABSOLUTE(.);
}
.bss : { /* BSS */
_sbss = ABSOLUTE(.);
*(.bss)
*(COMMON)
_ebss = ABSOLUTE(.);
}
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_info 0 : { *(.debug_info) }
.debug_line 0 : { *(.debug_line) }
.debug_pubnames 0 : { *(.debug_pubnames) }
.debug_aranges 0 : { *(.debug_aranges) }
}

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#!/bin/sh
# setenv.sh
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
if [ "$(basename $0)" = "setenv" ] ; then
echo "You must source this script, not run it!" 1>&2
exit 1
fi
if [ -z ${PATH_ORIG} ]; then export PATH_ORIG=${PATH}; fi
WD=`pwd`
export BUILDROOT_BIN=${WD}/../buildroot/build_arm_nofpu/staging_dir/bin
export PATH=${BUILDROOT_BIN}:/sbin:/usr/sbin:${PATH_ORIG}
echo "PATH : ${PATH}"

79
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############################################################
# Makefile
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################
-include $(TOPDIR)/Make.defs
MKDEP = $(TOPDIR)/tools/mkdeps.sh
CFLAGS += -I$(TOPDIR)/sched
ASRCS = up_vectors.S up_saveusercontext.S up_fullcontextrestore.S
AOBJS = $(ASRCS:.S=.o)
CSRCS = up_initialize.c up_initialstate.c up_idle.c \
up_irq.c up_syscall.c up_dataabort.c up_prefetchabort.c \
up_undefinedinsn.c up_interruptcontext.c up_timerisr.c \
up_createstack.c up_usestack.c up_releasestack.c \
up_exit.c up_assert.c up_blocktask.c up_unblocktask.c \
up_releasepending.c up_reprioritizertr.c up_copystate.c \
up_schedulesigaction.c up_sigdeliver.c
COBJS = $(CSRCS:.c=.o)
SRCS = $(ASRCS) $(CSRCS)
OBJS = $(AOBJS) $(COBJS)
all: up_head.o libarch.a
$(AOBJS) up_head.o: %.o: %.S
$(CC) -c $(CFLAGS) -D__ASSEMBLY__ $< -o $@
$(COBJS): %.o: %.c
$(CC) -c $(CFLAGS) $< -o $@
libarch.a: $(OBJS)
$(AR) rcs $@ $(OBJS)
.depend: Makefile $(SRCS)
$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
touch $@
depend: .depend
clean:
rm -f libarch.a *.o *~
distclean: clean
rm -f Make.dep .depend
-include Make.dep

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arch/c5471/src/c5471.h Normal file
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/************************************************************
* c5471.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __C5471_H
#define __C5471_H
/************************************************************
* Included Files
************************************************************/
#ifndef __ASSEMBLY__
# include <sys/types.h>
#endif
/************************************************************
* Definitions
************************************************************/
/* Arm7Tdmi *************************************************/
/* CPSR bits */
#define USR26_MODE 0x00
#define FIQ26_MODE 0x01
#define IRQ26_MODE 0x02
#define SVC26_MODE 0x03
#define USR_MODE 0x10
#define FIQ_MODE 0x11
#define IRQ_MODE 0x12
#define SVC_MODE 0x13
#define ABT_MODE 0x17
#define UND_MODE 0x1b
#define SYSTEM_MODE 0x1f
#define MODE_MASK 0x1f
#define T_BIT 0x20
#define F_BIT 0x40
#define I_BIT 0x80
#define CC_V_BIT (1 << 28)
#define CC_C_BIT (1 << 29)
#define CC_Z_BIT (1 << 30)
#define CC_N_BIT (1 << 31)
/* UARTs ****************************************************/
#define UART_IRDA_BASE 0xffff0800
#define UART_MODEM_BASE 0xffff1000
#define UARTn_IO_RANGE 0x00000800
/* Common UART Registers. Expressed as offsets from the BASE address */
#define UART_RHR_OFFS 0x00000000 /* Rcv Holding Register */
#define UART_THR_OFFS 0x00000004 /* Xmit Holding Register */
#define UART_FCR_OFFS 0x00000008 /* FIFO Control Register */
#define UART_RFCR_OFFS 0x00000008 /* Rcv FIFO Control Register */
#define UART_TFCR_OFFS 0x00000008 /* Xmit FIFO Control Register */
#define UART_SCR_OFFS 0x0000000c /* Status Control Register */
#define UART_LCR_OFFS 0x00000010 /* Line Control Register */
#define UART_LSR_OFFS 0x00000014 /* Line Status Register */
#define UART_SSR_OFFS 0x00000018 /* Supplementary Status Register */
#define UART_MCR_OFFS 0x0000001c /* Modem Control Register */
#define UART_MSR_OFFS 0x00000020 /* Modem Status Register */
#define UART_IER_OFFS 0x00000024 /* Interrupt Enable Register */
#define UART_ISR_OFFS 0x00000028 /* Interrupt Status Register */
#define UART_EFR_OFFS 0x0000002c /* Enhanced Feature Register */
#define UART_XON1_OFFS 0x00000030 /* XON1 Character Register */
#define UART_XON2_OFFS 0x00000034 /* XON2 Character Register */
#define UART_XOFF1_OFFS 0x00000038 /* XOFF1 Character Register */
#define UART_XOFF2_OFFS 0x0000003c /* XOFF2 Character Register */
#define UART_SPR_OFFS 0x00000040 /* Scratch-pad Register */
#define UART_DIV_115K_OFFS 0x00000044 /* Divisor for baud generation */
#define UART_DIV_BIT_RATE_OFFS 0x00000048 /* For baud rate generation */
#define UART_TCR_OFFS 0x0000004c /* Transmission Control Register */
#define UART_TLR_OFFS 0x00000050 /* Trigger Level Register */
#define UART_MDR_OFFS 0x00000054 /* Mode Definition Register */
/* Registers available only for the IrDA UART (absolute address). */
#define UART_IRDA_MDR1 0xffff0854 /* Mode Definition Register 1 */
#define UART_IRDA_MDR2 0xffff0858 /* Mode Definition Register 2 */
#define UART_IRDA_TXFLL 0xffff085c /* LS Xmit Frame Length Register */
#define UART_IRDA_TXFLH 0xffff0860 /* MS Xmit Frame Length Register */
#define UART_IRDA_RXFLL 0xffff0864 /* LS Rcvd Frame Length Register */
#define UART_IRDA_RXFLH 0xffff0868 /* MS Rcvd Frame Length Register */
#define UART_IRDA_SFLSR 0xffff086c /* Status FIFO Line Status Reg */
#define UART_IRDA_SFREGL 0xffff0870 /* LS Status FIFO Register */
#define UART_IRDA_SFREGH 0xffff0874 /* MS Status FIFO Register */
#define UART_IRDA_BLR 0xffff0878 /* Begin of File Length Register */
#define UART_IRDA_PULSE_WIDTH 0xffff087c /* Pulse Width Register */
#define UART_IRDA_ACREG 0xffff0880 /* Auxiliary Control Register */
#define UART_IRDA_PULSE_START 0xffff0884 /* Start time of pulse */
#define UART_IRDA_RX_W_PTR 0xffff0888 /* RX FIFO write pointer */
#define UART_IRDA_RX_R_PTR 0xffff088c /* RX FIFO read pointer */
#define UART_IRDA_TX_W_PTR 0xffff0890 /* TX FIFO write pointer */
#define UART_IRDA_TX_R_PTR 0xffff0894 /* TX FIFO read pointer */
#define UART_IRDA_STATUS_W_PTR 0xffff0898 /* Write pointer of status FIFO */
#define UART_IRDA_STATUS_R_PTR 0xffff089c /* Read pointer of status FIFO */
#define UART_IRDA_RESUME 0xffff08a0 /* Resume register */
#define UART_IRDA_MUX 0xffff08a4 /* Selects UART_IRDA output mux */
/* Registers available for the Modem UART (absolute addresses) */
#define UART_MODEM_MDR 0xffff1054 /* Mode Definition Register */
#define UART_MODEM_UASR 0xffff1058 /* UART Auto-baud Status Register */
#define UART_MODEM_RDPTR_URX 0xffff105c /* RX FIFO Read Pointer Register */
#define UART_MODEM_WRPTR_URX 0xffff1060 /* RX FIFO Write Pointer Register */
#define UART_MODEM_RDPTR_UTX 0xffff1064 /* TX FIFO Read Pointer Register */
#define UART_MODEM_WRPTR_UTX 0xffff1068 /* TX FIFO Write Pointer Register */
/* UART Settings ********************************************/
/* Miscellaneous UART settings. */
#define UART_RX_FIFO_NOEMPTY 0x00000001
#define UART_SSR_TXFULL 0x00000001
#define UART_LSR_TREF 0x00000020
#define UART_XMIT_FIFO_SIZE 64
#define UART_IRDA_XMIT_FIFO_SIZE 64
/* UART_LCR Register */
/* Bits 31-7: Reserved */
#define UART_LCR_BOC 0x00000040 /* Bit 6: Break Control */
/* Bit 5: Parity Type 2 */
#define UART_LCR_ParEven 0x00000010 /* Bit 4: Parity Type 1 */
#define UART_LCR_ParOdd 0x00000000
#define UART_LCR_ParEn 0x00000008 /* Bit 3: Paity Enable */
#define UART_LCR_ParDis 0x00000000
#define UART_LCR_2stop 0x00000004 /* Bit 2: Number of stop bits */
#define UART_LCR_1stop 0x00000000
#define UART_LCR_5bits 0x00000000 /* Bits 0-1: Word-length */
#define UART_LCR_6bits 0x00000001
#define UART_LCR_7bits 0x00000002
#define UART_LCR_8bits 0x00000003
#define UART_FCR_FTL 0x00000000
#define UART_FCR_FIFO_EN 0x00000001
#define UART_FCR_TX_CLR 0x00000002
#define UART_FCR_RX_CLR 0x00000004
#define UART_IER_RecvInt 0x00000001
#define UART_IER_XmitInt 0x00000002
#define UART_IER_LineStsInt 0x00000004
#define UART_IER_ModemStsInt 0x00000008 /* IrDA UART only */
#define UART_IER_XoffInt 0x00000020
#define UART_IER_RtsInt 0x00000040 /* IrDA UART only */
#define UART_IER_CtsInt 0x00000080 /* IrDA UART only */
#define UART_IER_AllInts 0x000000ff
#define BAUD_115200 0x00000001
#define BAUD_57600 0x00000002
#define BAUD_38400 0x00000003
#define BAUD_19200 0x00000006
#define BAUD_9600 0x0000000C
#define BAUD_4800 0x00000018
#define BAUD_2400 0x00000030
#define BAUD_1200 0x00000060
#define MDR_UART_MODE 0x00000000 /* Both IrDA and Modem UARTs */
#define MDR_SIR_MODE 0x00000001 /* IrDA UART only */
#define MDR_AUTOBAUDING_MODE 0x00000002 /* Modem UART only */
#define MDR_RESET_MODE 0x00000007 /* Both IrDA and Modem UARTs */
/* SPI ******************************************************/
#define MAX_SPI 3
#define SPI_REGISTER_BASE 0xffff2000
/* GIO ******************************************************/
#define MAX_GIO (35)
#define GIO_REGISTER_BASE 0xffff2800
#define GPIO_IO 0xffff2800 /* Writeable when I/O is configured
* as an output; reads value on I/O
* pin when I/O is configured as an
* input */
#define GPIO_CIO 0xffff2804 /* GPIO configuration register */
#define GPIO_IRQA 0xffff2808 /* In conjunction with GPIO_IRQB
* determines the behavior when GPIO
* pins configured as input IRQ */
#define GPIO_IRQB 0xffff280c /* Determines the behavior when GPIO
* pins configured as input IRQ */
#define GPIO_DDIO 0xffff2810 /* Delta Detect Register
* (detects changes in the I/O pins) */
#define GPIO_EN 0xffff2814 /* Selects register for muxed GPIOs */
#define KGIO_REGISTER_BASE 0xffff2900
#define KBGPIO_IO 0xffff2900 /* Keyboard I/O bits: Writeable
* when KBGPIO is configured as an
* output; reads value on I/O pin
* when KBGPIO is configured as an
* input */
#define KBGPIO_CIO 0xffff2904 /* KBGPIO configuration register */
#define KBGPIO_IRQA 0xffff2908 /* In conjunction with KBGPIO_IRQB
* determines the behavior when
* KBGPIO pins configured as input
* IRQ */
#define KBGPIO_IRQB 0xffff290c /* In conjunction with KBGPIO_IRQA
* determines the behavior when
* KBGPIO pins configured as input
* IRQ */
#define KBGPIO_DDIO 0xffff2910 /* Delta Detect Register (detects
* changes in the KBGPIO pins) */
#define KBGPIO_EN 0xffff2914 /* Selects register for muxed
* KBGPIOs */
/* Timers ***************************************************/
#define C5471_TIMER0_CTRL 0xffff2a00
#define C5471_TIMER0_CNT 0xffff2a04
#define C5471_TIMER1_CTRL 0xffff2b00
#define C5471_TIMER1_CNT 0xffff2b04
#define C5471_TIMER2_CTRL 0xffff2c00
#define C5471_TIMER2_CNT 0xffff2c04
/* Interrupts */
#define HAVE_SRC_IRQ_BIN_REG 0
#define INT_FIRST_IO 0xffff2d00
#define INT_IO_RANGE 0x5C
#define IT_REG 0xffff2d00
#define MASK_IT_REG 0xffff2d04
#define SRC_IRQ_REG 0xffff2d08
#define SRC_FIQ_REG 0xffff2d0c
#define SRC_IRQ_BIN_REG 0xffff2d10
#define INT_CTRL_REG 0xffff2d18
#define ILR_IRQ0_REG 0xffff2d1C /* 0-Timer 0 */
#define ILR_IRQ1_REG 0xffff2d20 /* 1-Timer 1 */
#define ILR_IRQ2_REG 0xffff2d24 /* 2-Timer 2 */
#define ILR_IRQ3_REG 0xffff2d28 /* 3-GPIO0 */
#define ILR_IRQ4_REG 0xffff2d2c /* 4-Ethernet */
#define ILR_IRQ5_REG 0xffff2d30 /* 5-KBGPIO[7:0] */
#define ILR_IRQ6_REG 0xffff2d34 /* 6-Uart serial */
#define ILR_IRQ7_REG 0xffff2d38 /* 7-Uart IRDA */
#define ILR_IRQ8_REG 0xffff2d3c /* 8-KBGPIO[15:8] */
#define ILR_IRQ9_REG 0xffff2d40 /* 9-GPIO3 */
#define ILR_IRQ10_REG 0xffff2d44 /* 10-GPIO2 */
#define ILR_IRQ11_REG 0xffff2d48 /* 11-I2C */
#define ILR_IRQ12_REG 0xffff2d4c /* 12-GPIO1 */
#define ILR_IRQ13_REG 0xffff2d50 /* 13-SPI */
#define ILR_IRQ14_REG 0xffff2d54 /* 14-GPIO[19:4] */
#define ILR_IRQ15_REG 0xffff2d58 /* 15-API */
/* I2C ******************************************************/
#define MAX_I2C 1
/* API ******************************************************/
#define DSPRAM_BASE 0xffe00000 /* DSPRAM base address */
#define DSPRAM_END 0xffe03fff
/* This is the API address range in the DSP address space. */
#define DSPMEM_DSP_START 0x2000
#define DSPMEM_DSP_END 0x3fff
/* This is the API address range in the ARM address space. */
#define DSPMEM_ARM_START DSPRAM_BASE /* Defined in hardware.h */
#define DSPMEM_ARM_END DSPRAM_END
/* DSPMEM_IN_RANGE is a generic macro to test is a value is within
* a range of values.
*/
#define DSPMEM_IN_RANGE(addr, start, end) \
((((__u32)(addr)) >= (start)) && (((__u32)(addr)) <= (end)))
/* DSPMEM_ADDR_ALIGNED verifies that a potential DSP address is
* properly word aligned.
*/
#define DSPMEM_ADDR_ALIGNED(addr, cpu) ((((__u32)(addr)) & 1) == 0)
/* DSPMEM_DSP_ADDR checks if a DSP address lies in within the
* DSP's API address range.
*/
#define DSPMEM_DSP_ADDR(addr, cpu) \
DSPMEM_IN_RANGE(addr, DSPMEM_DSP_START, DSPMEM_DSP_END)
/* DSPMEM_ARM_ADDR checks if a ARM address lies in within the
* ARM's API address range.
*/
#define DSPMEM_ARM_ADDR(addr) \
DSPMEM_IN_RANGE(addr, DSPMEM_ARM_START, DSPMEM_ARM_END)
/* DSPMEM_DSP_TO_ARM maps a DSP API address into an ARM API address */
#define DSPMEM_DSP_TO_ARM(addr, cpu) \
((((__u32)(addr) - DSPMEM_DSP_START) << 1) + DSPMEM_ARM_START)
/* DSPMEM_ARM_TO_DSP maps an ARM API address into a DSP API address */
#define DSPMEM_ARM_TO_DSP(addr) \
((((__u32)(addr) - DSPMEM_ARM_START) >> 1) + DSPMEM_DSP_START)
/************************************************************
* Inline Functions
************************************************************/
#ifndef __ASSEMBLY__
# define getreg8(a) (*(volatile ubyte *)(a))
# define putreg8(v,a) (*(volatile ubyte *)(a) = (v))
# define getreg32(a) (*(volatile uint32 *)(a))
# define putreg32(v,a) (*(volatile uint32 *)(a) = (v))
/* Some compiler options will convert short loads and stores into byte loads
* and stores. We don't want this to happen for IO reads and writes!
*/
/* # define getreg16(a) (*(volatile uint16 *)(a)) */
static inline unsigned short getreg16(unsigned int addr)
{
unsigned short retval;
__asm__ __volatile__("\tldrh %0, [%1]\n\t" : "=r"(retval) : "r"(addr));
return retval;
}
/* define putreg16(v,a) (*(volatile uint16 *)(a) = (v)) */
static inline void putreg16(uint16 val, unsigned int addr)
{
__asm__ __volatile__("\tstrh %0, [%1]\n\t": : "r"(val), "r"(addr));
}
/* Most C5471 registers are 16-bits wide */
#define getreg(a) getreg16(1)
#define putreg(v,a) putreg16(v,a)
#endif
#endif /* __C5471_H */

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/************************************************************
* up_assert.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdlib.h>
#include <assert.h>
#include <debug.h>
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Functions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_assert
************************************************************/
void up_assert(const ubyte *filename, uint32 lineno)
{
dbg("Assertion failed at file:%s line: %d\n",
filename, lineno);
exit(EXIT_FAILURE);
}
/************************************************************
* Name: up_assert_code
************************************************************/
void up_assert_code(const ubyte *filename, uint32 lineno, uint16 errorcode)
{
dbg("Assertion failed at file:%s line: %d error code: %d\n",
filename, lineno, errorcode);
exit(errorcode);
}

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/************************************************************
* up_blocktask.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_block_task
*
* Description:
* The currently executing task at the head of
* the ready to run list must be stopped. Save its context
* and move it to the inactive list specified by task_state.
*
* Inputs:
* tcb: Refers to a task in the ready-to-run list (normally
* the task at the the head of the list). It most be
* stopped, its context saved and moved into one of the
* waiting task lists. It it was the task at the head
* of the ready-to-run list, then a context to the new
* ready to run task must be performed.
* task_state: Specifies which waiting task list should be
* hold the blocked task TCB.
*
************************************************************/
void up_block_task(_TCB *tcb, tstate_t task_state)
{
/* Verify that the context switch can be performed */
if ((tcb->task_state < FIRST_READY_TO_RUN_STATE) ||
(tcb->task_state > LAST_READY_TO_RUN_STATE))
{
PANIC(OSERR_BADBLOCKSTATE);
}
else
{
_TCB *rtcb = (_TCB*)g_readytorun.head;
boolean switch_needed;
dbg("Blocking TCB=%p\n", tcb);
/* Remove the tcb task from the ready-to-run list. If we
* are blocking the task at the head of the task list (the
* most likely case), then a context switch to the next
* ready-to-run task is needed. In this case, it should
* also be true that rtcb == tcb.
*/
switch_needed = sched_removereadytorun(tcb);
/* Add the task to the specified blocked task list */
sched_addblocked(tcb, (tstate_t)task_state);
/* If there are any pending tasks, then add them to the g_readytorun
* task list now
*/
if (g_pendingtasks.head)
{
switch_needed |= sched_mergepending();
}
/* Now, perform the context switch if one is needed */
if (switch_needed)
{
/* Are we in an interrupt handler? */
if (current_regs)
{
/* Yes, then we have to do things differently.
* Just copy the current_regs into the OLD rtcb.
*/
up_copystate(rtcb->xcp.regs, current_regs);
/* Restore the exception context of the rtcb at the (new) head
* of the g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* Then switch contexts */
up_copystate(current_regs, rtcb->xcp.regs);
}
/* Copy the user C context into the TCB at the (old) head of the
* g_readytorun Task list. if up_saveusercontext returns a non-zero
* value, then this is really the previously running task restarting!
*/
else if (!up_saveusercontext(rtcb->xcp.regs))
{
/* Restore the exception context of the rtcb at the (new) head
* of the g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* Then switch contexts */
up_fullcontextrestore(rtcb->xcp.regs);
}
}
}
}

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/************************************************************
* up_copystate.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Functions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_undefinedinsn
************************************************************/
/* A little faster than most memcpy's */
void up_copystate(uint32 *dest, uint32 *src)
{
int i;
for (i = 0; i < XCPTCONTEST_REGS; i++)
{
*dest++ = *src++;
}
}

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/************************************************************
* up_createstack.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/kmalloc.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/************************************************************
* Private Types
************************************************************/
/************************************************************
* Private Function Prototypes
************************************************************/
/************************************************************
* Global Functions
************************************************************/
/************************************************************
* Name: up_create_stack
*
* Description:
* Allocate a stack for a new thread and setup
* up stack-related information in the TCB.
*
* The following TCB fields must be initialized:
* adj_stack_size: Stack size after adjustment for hardware,
* processor, etc. This value is retained only for debug
* purposes.
* stack_alloc_ptr: Pointer to allocated stack
* adj_stack_ptr: Adjusted StatckAllocPtr for HW. The
* initial value of the stack pointer.
*
* Inputs:
* tcb: The TCB of new task
* stack_size: The requested stack size. At least this much
* must be allocated.
************************************************************/
STATUS up_create_stack(_TCB *tcb, uint32 stack_size)
{
if (tcb->stack_alloc_ptr &&
tcb->adj_stack_size != stack_size)
{
sched_free(tcb->stack_alloc_ptr);
tcb->stack_alloc_ptr = NULL;
}
if (!tcb->stack_alloc_ptr)
{
tcb->stack_alloc_ptr = (uint32 *)kzmalloc(stack_size);
}
if (tcb->stack_alloc_ptr)
{
uint32 top_of_stack;
uint32 size_of_stack;
/* The Arm7Tdmi uses a push-down stack: the stack grows
* toward loweraddresses in memory. The stack pointer
* register, points to the lowest, valid work address
* (the "top" of the stack). Items on the stack are
* referenced as positive word offsets from sp.
*/
top_of_stack = (uint32)tcb->stack_alloc_ptr + stack_size - 4;
/* The Arm7Tdmi stack must be aligned at word (4 byte)
* boundaries. If necessary top_of_stack must be rounded
* down to the next boundary
*/
top_of_stack &= ~3;
size_of_stack = top_of_stack - (uint32)tcb->stack_alloc_ptr + 4;
/* Save the adjusted stack values in the _TCB */
tcb->adj_stack_size = top_of_stack;
tcb->adj_stack_size = size_of_stack;
return OK;
}
return ERROR;
}

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/************************************************************
* up_dataabort.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Functions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_dataabort
************************************************************/
void up_dataabort(uint32 *regs)
{
PANIC(OSERR_ERREXCEPTION);
}

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/************************************************************
* up_exit.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: _exit
*
* Description:
* This function causes the currently executing task to cease
* to exist. This is a special case of task_delete().
*
************************************************************/
void _exit(int status)
{
_TCB* tcb = (_TCB*)g_readytorun.head;
dbg("TCB=%p exitting\n", tcb);
/* Remove the tcb task from the ready-to-run list. We can
* ignore the return value because we know that a context
* switch is needed.
*/
(void)sched_removereadytorun(tcb);
/* Move the TCB to the specified blocked task list and delete it */
sched_addblocked(tcb, TSTATE_TASK_INACTIVE);
task_delete(tcb->pid);
/* If there are any pending tasks, then add them to the g_readytorun
* task list now
*/
if (g_pendingtasks.head)
{
(void)sched_mergepending();
}
/* Now, perform the context switch to the new ready-to-run task at the
* head of the list.
*/
tcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", tcb);
/* Then switch contexts */
up_fullcontextrestore(tcb->xcp.regs);
}

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/**************************************************************************
* up_fullcontextrestore.S
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include <nuttx/irq.h>
#include "up_internal.h"
/**************************************************************************
* Private Definitions
**************************************************************************/
/**************************************************************************
* Private Types
**************************************************************************/
/**************************************************************************
* Private Function Prototypes
**************************************************************************/
/**************************************************************************
* Global Variables
**************************************************************************/
/**************************************************************************
* Private Variables
**************************************************************************/
/**************************************************************************
* Private Functions
**************************************************************************/
/**************************************************************************
* Public Functions
**************************************************************************/
/**************************************************************************
* Name: up_fullcontextrestore
**************************************************************************/
.globl up_fullcontextrestore
.type up_fullcontextrestore, function
up_fullcontextrestore:
/* On entry, a1 (r0) holds address of the register save area */
/* Restore the volatile registers. This is not necessary for
* normally task-to-task context switches (where the context
* was saved by up_saveusercontext()), but is necesary when
* the full context was saved through interrupt handling.
*/
/* Recover the user context (we will then have a new stack pointer) */
add r1, r0, #XCPTCONTEXT_UOFFSET
ldmia r1, {r3-r11, r13-r14}
/* Save the CSPR value and one scratch register on the stack */
sub sp, sp, #2*4 /* Create a frame to hold two regs */
stmia sp, {r3, r4} /* Save the CPSR (r3) and scratch (r4) */
/* Then recover the remaining registers */
ldmia r0, {r0-r3, r12} /* Recover volatile regs */
/* Now we can restore the CPSR (probably re-enabling interrupts) */
ldr r4, [sp]
msr cpsr, r4
/* Then recover the correct r4 value */
ldr r4, [sp, #4]
/* Destroy the temporary stack frame and return */
add sp, sp, #2*4
movs pc, lr
.size up_fullcontextrestore, . - up_fullcontextrestore

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/************************************************************
* up_head.S
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include "c5471.h"
/************************************************************
* Definitions
************************************************************/
/************************************************************
* OS Entry Point
************************************************************/
/* We assume the bootloader has already initialized most of the h/w for
* us and that only leaves us having to do some os specific things
* below.
*/
.global __start
.type __start, #function
__start:
/* First, setup initial processor mode */
mov r0, #(SVC_MODE | I_BIT | F_BIT )
msr cpsr, r0
/* Setup system stack (and get the BSS range) */
adr r0, LC0
ldmia r0, {r4, r5, sp}
/* Clear system BSS section */
mov r0, #0
1: cmp r4, r5
strcc r0, [r4], #4
bcc 1b
/* Copy system .data sections to new home in RAM. */
#ifdef CONFIG_BOOT_FROM_FLASH
adr r3, LC2
ldmia r3, {r0, r1, r2}
1: ldmia r0!, {r3 - r10}
stmia r1!, {r3 - r10}
cmp r1, r2
blt 1b
#endif
/* Initialize Kernel Stack Contents */
#if 0
mov r1, sp
sub r1, r1, #INITIAL_STACK_SIZE
ldr r0, L_STACK_MAGIC
str r0, [r1], #4
ldr r0, L_STACK_UNTOUCHED_MAGIC
1: cmp r1, sp
strcc r0, [r1], #4
bcc 1b
#endif
/* Jump to OS entry */
mov fp, #0
b os_start
/* Variables */
LC0: .long _sbss
.long _ebss
.long CONFIG_STACK_POINTER+CONFIG_PROC_STACK_SIZE-4
#ifdef CONFIG_BOOT_FROM_FLASH
LC2: .long _eronly @ Where .data defaults are stored in Flash.
.long _sdata @ Where .data needs to reside in SDRAM.
.long _edata
#endif
#if 0
L_STACK_UNTOUCHED_MAGIC: .long 0xfeef1ef0
L_STACK_MAGIC: .long 0xdeadbeef
#endif
.end

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/************************************************************
* up_idle.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_idle
*
* Description:
* up_idle() is the logic that will be executed when their
* is no other ready-to-run task. This is processor idle
* time and will continue until some interrupt occurs to
* cause a context switch from the idle task.
*
* Processing in this state may be processor-specific. e.g.,
* this is where power management operations might be
* performed.
*
************************************************************/
void up_idle(void)
{
}

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/************************************************************
* up_initialize.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/************************************************************
* Private Types
************************************************************/
/************************************************************
* Private Function Prototypes
************************************************************/
/************************************************************
* Global Functions
************************************************************/
/************************************************************
* Name: up_initialize
*
* Description:
* up_initialize will be called once during OS
* initialization after the basic OS services have been
* initialized. The architecture specific details of
* initializing the OS will be handled here. Such things as
* setting up interrupt service routines, starting the
* clock, and registering device drivers are some of the
* things that are different for each processor and hardware
* platform.
*
* up_initialize is called after the OS initialized but
* before the init process has been started and before the
* libraries have been initialized. OS services and driver
* services are available.
*
************************************************************/
void up_initialize(void)
{
/* Initialize global variables */
current_regs = NULL;
/* Initialize the interrupt subsystem */
up_irqinitialize();
/* Attach and enable the timer interrupt */
up_disable_irq(C5471_IRQ_SYSTIMER);
irq_attach(C5471_IRQ_SYSTIMER, (xcpt_t)up_timerisr);
up_enable_irq(C5471_IRQ_SYSTIMER);
}

85
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/************************************************************
* up_initialstate.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <string.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_initial_state
*
* Description:
* A new thread is being started and a new TCB
* has been created. This function is called to initialize
* the processor specific portions of the new TCB.
*
* This function must setup the intial architecture registers
* and/or stack so that execution will begin at tcb->start
* on the next context switch.
*
************************************************************/
void up_initial_state(_TCB *tcb)
{
struct xcptcontext *xcp = &tcb->xcp;
/* Initialize the initial exception register context structure */
memset(xcp, 0, sizeof(struct xcptcontext));
xcp->regs[JB_SP] = (uint32)tcb->adj_stack_ptr;
xcp->regs[JB_LR] = (uint32)tcb->start;
}

99
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/************************************************************
* up_internal.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __UP_INTERNAL_H
#define __UP_INTERNAL_H
/************************************************************
* Included Files
************************************************************/
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Public Types
************************************************************/
#ifndef __ASSEMBLY__
typedef void (*up_vector_t)(void);
#endif
/************************************************************
* Public Variables
************************************************************/
#ifndef __ASSEMBLY__
extern uint32 *current_regs;
#endif
/************************************************************
* Inline Functions
************************************************************/
/************************************************************
* Public Functions
************************************************************/
#ifndef __ASSEMBLY__
/* Defined in files with the same name as the function */
extern void up_copystate(uint32 *dest, uint32 *src);
extern void up_dataabort(uint32 *regs);
extern void up_fullcontextrestore(uint32 *regs) __attribute__ ((noreturn));
extern void up_irqinitialize(void);
extern void up_prefetchabort(uint32 *regs);
extern int up_saveusercontext(uint32 *regs);
extern void up_sigdeliver(void);
extern void up_syscall(uint32 *regs);
extern int up_timerisr(int irq, uint32 *regs);
extern void up_undefinedinsn(uint32 *regs);
/* Defined in up_vectors.S */
extern void up_vectorundefinsn(void);
extern void up_vectorswi(void);
extern void up_vectorprefetch(void);
extern void up_vectordata(void);
extern void up_vectoraddrexcptn(void);
extern void up_vectorirq(void);
extern void up_vectorfiq(void);
#endif /* __ASSEMBLY__ */
#endif /* __UP_INTERNAL_H */

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/************************************************************
* up_interruptcontext.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/arch.h>
#include <nuttx/irq.h>
#include "up_internal.h"
/************************************************************
* Private Types
************************************************************/
/************************************************************
* Private Function Prototypes
************************************************************/
/************************************************************
* Global Functions
************************************************************/
/************************************************************
* Name: up_interrupt_context
*
* Description: Return TRUE is we are currently executing in
* the interrupt handler context.
************************************************************/
boolean up_interrupt_context(void)
{
return current_regs != NULL;
}

243
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/************************************************************
* up_irq.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/irq.h>
#include "c5471.h"
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Definitions
************************************************************/
#define EdgeSensitive 0x00000020
#define Priority 0x0000001E
/************************************************************
* Public Data
************************************************************/
uint32 *current_regs;
/************************************************************
* Private Data
************************************************************/
/* The value of _vflashstart is defined in ld.script. It
* could be hard-coded because we know that correct IRAM
* area is 0xffc00000.
*/
extern int _svectors; /* Type does not matter */
/* The C5471 has FLASH at the low end of memory. The
* rrload bootloaer will catch all interrupts and re-vector
* them to vectors stored in IRAM. The following table is
* used to initialize those vectors.
*/
static up_vector_t g_vectorinittab[] =
{
(up_vector_t)NULL,
up_vectorundefinsn,
up_vectorswi,
up_vectorprefetch,
up_vectordata,
up_vectoraddrexcptn,
up_vectorirq,
up_vectorfiq
};
#define NVECTORS ((sizeof(g_vectorinittab)) / sizeof(up_vector_t))
/************************************************************
* Private Functions
************************************************************/
/************************************************************
* Name: up_ackirq
*
* Description:
* Acknowlede the IRQ.Bit 0 of the Interrupt Control
* Register == New IRQ agreement (NEW_IRQ_AGR). Reset IRQ
* output. Clear source IRQ register. Enables a new IRQ
* generation. Reset by internal logic.
*
************************************************************/
static inline void up_ackirq(unsigned int irq)
{
uint32 reg;
reg = getreg32(SRC_IRQ_REG); /* Insure appropriate IT_REG bit clears */
putreg32(reg | 0x00000001, INT_CTRL_REG); /* write the NEW_IRQ_AGR bit. */
}
/************************************************************
* Name: up_ackfiq
*
* Description:
* Acknowledge the FIQ. Bit 1 of the Interrupt Control
* Register == New FIQ agreement (NEW_FIQ_AGR). Reset FIQ
* output. Clear source FIQ register. Enables a new FIQ
* generation. Reset by internal logic.
*
************************************************************/
static inline void up_ackfiq(unsigned int irq)
{
uint32 reg;
reg = getreg32(SRC_FIQ_REG); /* Insure appropriate IT_REG bit clears */
putreg32(reg | 0x00000002, INT_CTRL_REG); /* write the NEW_FIQ_AGR bit. */
}
/************************************************************
* Name: up_vectorinitialize
************************************************************/
static inline void up_vectorinitialize(void)
{
up_vector_t *src = g_vectorinittab;
up_vector_t *dest = (up_vector_t*)&_svectors;
int i;
for (i = 0; i < NVECTORS; i++)
{
*dest++ = *src++;
}
}
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: irq_initialize
************************************************************/
void up_irqinitialize(void)
{
/* Disable all interrupts. */
putreg32(0x0000ffff, MASK_IT_REG);
/* Clear any pending interrupts */
up_ackirq(0);
up_ackfiq(0);
putreg32(0x00000000, IT_REG);
/* Override hardware defaults */
putreg32(EdgeSensitive | Priority, ILR_IRQ2_REG);
putreg32(EdgeSensitive | Priority, ILR_IRQ4_REG);
putreg32(Priority, ILR_IRQ6_REG);
putreg32(EdgeSensitive | Priority, ILR_IRQ15_REG);
/* Initialize hardware interrupt vectors */
up_vectorinitialize();
current_regs = NULL;
/* And finally, enable interrupts */
irqrestore(SVC_MODE | F_BIT);
}
/************************************************************
* Name: up_disable_irq
*
* Description:
* Disable the IRQ specified by 'irq'
*
************************************************************/
void up_disable_irq(int irq)
{
if (irq < NR_IRQS)
{
uint32 reg = getreg32(MASK_IT_REG);
putreg32(reg | (1 << irq), MASK_IT_REG);
}
}
/************************************************************
* Name: up_enable_irq
*
* Description:
* Enable the IRQ specified by 'irq'
*
************************************************************/
void up_enable_irq(int irq)
{
if (irq < NR_IRQS)
{
uint32 reg = getreg32(MASK_IT_REG);
putreg32(reg & ~(1 << irq), MASK_IT_REG);
}
}
/************************************************************
* Name: up_acknowledge_irq
*
* Description:
* Disable the IRQ specified by 'irq'
*
************************************************************/
/* Bit 0 of the Interrupt Control Rigster == New IRQ
* agreement (NEW_IRQ_AGR). Reset IRQ output. Clear source
* IRQ register. Enables a new IRQ generation. Reset by
* internal logic.
*
* IRQ (FIQ) output and SRC_IRQ_REG and SRC_IRQ_BIN_REG
* (SRC_FIQ_REG) registers are reset only if the bit in the
* Interrupt register (IT_REG) corresponding to the interrupt
* having requested MCU action is already cleared or masked.
*
* For an edge-sensitive interrupt, the Interrupt register bit is
* deactivated when reading the SRC_IRQ_REG or SRC_IRQ_BIN_REG
* (SRC_FIQ_REG) registers.
*/
void up_acknowledge_irq(int irq)
{
uint32 reg = getreg32(INT_CTRL_REG);
putreg32(reg | 0x00000001, INT_CTRL_REG); /* write the NEW_IRQ_AGR bit. */
}

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/************************************************************
* up_prefetchabort.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/irq.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Functions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_prefetchabort
************************************************************/
void up_prefetchabort(uint32 *regs)
{
PANIC(OSERR_ERREXCEPTION);
}

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/************************************************************
* up_releasepending.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_release_pending
*
* Description:
* Release and ready-to-run tasks that have
* collected in the pending task list. This can call a
* context switch if a new task is placed at the head of
* the ready to run list.
*
************************************************************/
void up_release_pending(void)
{
_TCB *rtcb = (_TCB*)g_readytorun.head;
dbg("From TCB=%p\n", rtcb);
/* Merge the g_pendingtasks list into the g_readytorun task list */
/* sched_lock(); */
if (sched_mergepending())
{
/* The currently active task has changed! We will need to
* switch contexts. First check if we are operating in
* interrupt context:
*/
if (current_regs)
{
/* Yes, then we have to do things differently.
* Just copy the current_regs into the OLD rtcb.
*/
up_copystate(rtcb->xcp.regs, current_regs);
/* Restore the exception context of the rtcb at the (new) head
* of the g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* Then switch contexts */
up_copystate(current_regs, rtcb->xcp.regs);
}
/* Copy the exception context into the TCB of the task that
* was currently active. if up_saveusercontext returns a non-zero
* value, then this is really the previously running task
* restarting!
*/
else if (!up_saveusercontext(rtcb->xcp.regs))
{
/* Restore the exception context of the rtcb at the (new) head
* of the g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* Then switch contexts */
up_fullcontextrestore(rtcb->xcp.regs);
}
}
}

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arch/c5471/src/up_releasestack.c Normal file
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/************************************************************
* up_releasestack.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Types
************************************************************/
/************************************************************
* Private Function Prototypes
************************************************************/
/************************************************************
* Global Functions
************************************************************/
/************************************************************
* Name: up_release_stack
*
* Description:
* A task has been stopped. Free all stack
* related resources retained int the defunct TCB.
*
************************************************************/
void up_release_stack(_TCB *dtcb)
{
if (dtcb->stack_alloc_ptr)
{
sched_free(dtcb->stack_alloc_ptr);
dtcb->stack_alloc_ptr = NULL;
}
dtcb->adj_stack_size = 0;
}

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/************************************************************
* up_reprioritizertr.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_reprioritize_rtr
*
* Description:
* Called when the priority of a running or
* ready-to-run task changes and the reprioritization will
* cause a context switch. Two cases:
*
* 1) The priority of the currently running task drops and the next
* task in the ready to run list has priority.
* 2) An idle, ready to run task's priority has been raised above the
* the priority of the current, running task and it now has the
* priority.
*
* Inputs:
* tcb: The TCB of the task that has been reprioritized
* priority: The new task priority
*
************************************************************/
void up_reprioritize_rtr(_TCB *tcb, ubyte priority)
{
/* Verify that the caller is sane */
if (tcb->task_state < FIRST_READY_TO_RUN_STATE ||
tcb->task_state > LAST_READY_TO_RUN_STATE ||
priority < SCHED_PRIORITY_MIN ||
priority > SCHED_PRIORITY_MAX)
{
PANIC(OSERR_BADREPRIORITIZESTATE);
}
else
{
_TCB *rtcb = (_TCB*)g_readytorun.head;
boolean switch_needed;
dbg("TCB=%p PRI=%d\n", tcb, priority);
/* Remove the tcb task from the ready-to-run list.
* sched_removereadytorun will return TRUE if we just
* remove the head of the ready to run list.
*/
switch_needed = sched_removereadytorun(tcb);
/* Setup up the new task priority */
tcb->sched_priority = (ubyte)priority;
/* Return the task to the specified blocked task list.
* sched_addreadytorun will return TRUE if the task was
* added to the new list. We will need to perform a context
* switch only if the EXCLUSIVE or of the two calls is non-zero
* (i.e., one and only one the calls changes the head of the
* ready-to-run list).
*/
switch_needed ^= sched_addreadytorun(tcb);
/* Now, perform the context switch if one is needed */
if (switch_needed)
{
/* If we are going to do a context switch, then now is the right
* time to add any pending tasks back into the ready-to-run list.
* task list now
*/
if (g_pendingtasks.head)
{
sched_mergepending();
}
/* Are we in an interrupt handler? */
if (current_regs)
{
/* Yes, then we have to do things differently.
* Just copy the current_regs into the OLD rtcb.
*/
up_copystate(rtcb->xcp.regs, current_regs);
/* Restore the exception context of the rtcb at the (new) head
* of the g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* Then switch contexts */
up_copystate(current_regs, rtcb->xcp.regs);
}
/* Copy the exception context into the TCB at the (old) head of the
* g_readytorun Task list. if up_saveusercontext returns a non-zero
* value, then this is really the previously running task restarting!
*/
if (!up_saveusercontext(rtcb->xcp.regs))
{
/* Restore the exception context of the rtcb at the (new) head
* of the g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* Then switch contexts */
up_fullcontextrestore(rtcb->xcp.regs);
}
}
}
}

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/**************************************************************************
* up_saveusercontext.S
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include <nuttx/irq.h>
#include "up_internal.h"
/**************************************************************************
* Private Definitions
**************************************************************************/
/**************************************************************************
* Private Types
**************************************************************************/
/**************************************************************************
* Private Function Prototypes
**************************************************************************/
/**************************************************************************
* Global Variables
**************************************************************************/
/**************************************************************************
* Private Variables
**************************************************************************/
/**************************************************************************
* Private Functions
**************************************************************************/
/**************************************************************************
* Public Functions
**************************************************************************/
/**************************************************************************
* Name: up_saveusercontext
**************************************************************************/
.text
.globl up_saveusercontext
.type up_saveusercontext, function
up_saveusercontext:
/* On entry, a1 (r0) holds address of struct xcptcontext.
* Offset to the user region.
*/
/* Make sure that the return value will be non-zero (the
* value of the other volatile registers don't matter --
* r1-r3, ip). This function is called throught the
* noraml C calling conventions and the values of these
* registers cannot be assumed at the point of setjmp
* return.
*/
mov ip, #1
str ip, [r0, #JB_R0]
/* Get the offset to the user save area */
add r0, r0, #XCPTCONTEXT_UOFFSET
/* Get the current cpsr as well */
mrs r3, cpsr /* R3 = CPSR value */
/* We need to save:
*
* Volatile register: r3 (holds the cpsr value)
* Static registers: v1-v7 (aka r4-r10)
* Frame pointer: fp (aka r11)
* Stack pointer: sp (aka r13)
* Return address: lr (aka r14)
*
* These have to be save in the same order as is done
* by the interrupt handling logic.
*/
stmia r0, {r3-r11, r13-r14}
/* Return 0 */
mov r0, #0 /* Return value == 0 */
mov pc, lr /* Return */
.size up_saveusercontext, . - up_saveusercontext

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arch/c5471/src/up_schedulesigaction.c Normal file
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/************************************************************
* up_schedulesigaction.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
#include "c5471.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_schedule_sigaction
*
* Description:
* This function is called by the OS when one or more
* signal handling actions have been queued for execution.
* The architecture specific code must configure things so
* that the 'igdeliver' callback is executed on the thread
* specified by 'tcb' as soon as possible.
*
* This function may be called from interrupt handling logic.
*
* This operation should not cause the task to be unblocked
* nor should it cause any immediate execution of sigdeliver.
* Typically, a few cases need to be considered:
*
* (1) This function may be called from an interrupt handler
* During interrupt processing, all xcptcontext structures
* should be valid for all tasks. That structure should
* be modified to invoke sigdeliver() either on return
* from (this) interrupt or on some subsequent context
* switch to the recipient task.
* (2) If not in an interrupt handler and the tcb is NOT
* the currently executing task, then again just modify
* the saved xcptcontext structure for the recipient
* task so it will invoke sigdeliver when that task is
* later resumed.
* (3) If not in an interrupt handler and the tcb IS the
* currently executing task -- just call the signal
* handler now.
*
************************************************************/
void up_schedule_sigaction(_TCB *tcb, sig_deliver_t sigdeliver)
{
/* Refuse to handle nested signal actions */
if (!tcb->xcp.sigdeliver)
{
uint32 flags;
/* Make sure that interrupts are disabled */
flags = irqsave();
/* First, handle some special cases when the signal is
* being delivered to the currently executing task.
*/
if (tcb == (_TCB*)g_readytorun.head)
{
/* CASE 1: We are not in an interrupt handler and
* a task is signalling itself for some reason.
*/
if (!current_regs)
{
/* In this case just deliver the signal now. */
sigdeliver(tcb);
}
/* CASE 2: We are in an interrupt handler AND the
* interrupted task is the same as the one that
* must receive the signal, then we will have to modify
* the return state as well as the state in the TCB.
*/
else
{
/* Save the return lr and cpsr and one scratch register
* These will be restored by the signal trampoline after
* the signals have been delivered.
*/
tcb->xcp.sigdeliver = sigdeliver;
tcb->xcp.saved_lr = current_regs[JB_LR];
tcb->xcp.saved_cpsr = current_regs[JB_CPSR];
/* Then set up to vector to the trampoline with interrupts
* disabled
*/
current_regs[JB_LR] = (uint32)up_sigdeliver;
current_regs[JB_CPSR] = SVC_MODE | I_BIT | F_BIT;
/* And make sure that the saved context in the TCB
* is the same as the interrupt return context.
*/
up_copystate(tcb->xcp.regs, current_regs);
}
}
/* Otherwise, we are (1) signaling a task is not running
* from an interrupt handler or (2) we are not in an
* interrupt handler and the running task is signalling
* some non-running task.
*/
else
{
/* Save the return lr and cpsr and one scratch register
* These will be restored by the signal trampoline after
* the signals have been delivered.
*/
tcb->xcp.sigdeliver = sigdeliver;
tcb->xcp.saved_lr = tcb->xcp.regs[JB_LR];
tcb->xcp.saved_cpsr = tcb->xcp.regs[JB_CPSR];
/* Then set up to vector to the trampoline with interrupts
* disabled
*/
tcb->xcp.regs[JB_LR] = (uint32)up_sigdeliver;
tcb->xcp.regs[JB_CPSR] = SVC_MODE | I_BIT | F_BIT;
}
irqrestore(flags);
}
}

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arch/c5471/src/up_sigdeliver.c Normal file
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/************************************************************
* up_sigdeliver.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
#include "c5471.h"
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Functions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_sigdeliver
*
* Description:
* This is the a signal handling trampoline. When a
* signal action was posted. The task context was mucked
* with and forced to branch to this location with interrupts
* disabled.
*
************************************************************/
void up_sigdeliver(void)
{
_TCB *rtcb = (_TCB*)g_readytorun.head;
uint32 regs[XCPTCONTEST_REGS];
sig_deliver_t sigdeliver;
ASSERT(rtcb->xcp.sigdeliver);
/* Save the real return state on the stack. */
up_copystate(regs, rtcb->xcp.regs);
regs[JB_LR] = rtcb->xcp.saved_lr;
regs[JB_CPSR] = rtcb->xcp.saved_cpsr;
/* Get a local copy of the sigdeliver function pointer.
* we do this so that we can nullify the sigdeliver
* function point in the TCB and accept more signal
* deliveries while processing the current pending
* signals.
*/
sigdeliver = rtcb->xcp.sigdeliver;
rtcb->xcp.sigdeliver = NULL;
/* Then enable interrupts. We should still be safe from
* any further signal handling actions until we also
* nullify tcb->xcp.sigdeliver.
*/
irqrestore(SVC_MODE | F_BIT);
/* Deliver the signals */
sigdeliver(rtcb);
/* Then restore the correct state for this thread of
* execution.
*/
up_fullcontextrestore(regs);
}

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/************************************************************
* up_syscall.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include "c5471.h"
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* vectors
************************************************************/
/************************************************************
* Private Functions
************************************************************/
/************************************************************
* Public Functions
************************************************************/
/************************************************************
* Name: up_syscall
*
* Description:
* SWI interrupts will vection here with insn=the SWI
* instruction and xcp=the interrupt context
*
* The handler may get the SWI number be de-referencing
* the return address saved in the xcp and decoding
* the SWI instruction
*
************************************************************/
void up_syscall(uint32 *regs)
{
PANIC(OSERR_ERREXCEPTION);
}

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/************************************************************
* up_timerisr.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/************************************************************
* Private Types
************************************************************/
/************************************************************
* Private Function Prototypes
************************************************************/
/************************************************************
* Global Functions
************************************************************/
/************************************************************
* Function: timer_isr
*
* Description:
* The timer ISR will perform a variety of services for
* various portions of the systems.
*
************************************************************/
int up_timerisr(int irq, uint32 *regs)
{
uint32 *saved_regs;
/* Save the pointer to the interrupted context (exercising some
* logic for the unexpected case of nested interrupts).
*/
if (!current_regs)
{
saved_regs = NULL;
current_regs = regs;
}
else
{
saved_regs = current_regs;
}
/* Process timer interrupt */
sched_process_timer();
/* Restore the previous context */
current_regs = saved_regs;
return 0;
}

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/************************************************************
* up_unblocktask.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_unblock_task
*
* Description:
* A task is currently in an inactive task list
* but has been prepped to execute. Move the TCB to the
* ready-to-run list, restore its context, and start execution.
*
* Inputs:
* tcb: Refers to the tcb to be unblocked. This tcb is
* in one of the waiting tasks lists. It must be moved to
* the ready-to-run list and, if it is the highest priority
* ready to run taks, executed.
*
************************************************************/
void up_unblock_task(_TCB *tcb)
{
/* Verify that the context switch can be performed */
if ((tcb->task_state < FIRST_BLOCKED_STATE) ||
(tcb->task_state > LAST_BLOCKED_STATE))
{
PANIC(OSERR_BADUNBLOCKSTATE);
}
else
{
_TCB *rtcb = (_TCB*)g_readytorun.head;
dbg("Unblocking TCB=%p\n", tcb);
/* Remove the task from the blocked task list */
sched_removeblocked(tcb);
/* Reset its timeslice. This is only meaningful for round
* robin tasks but it doesn't here to do it for everything
*/
#if CONFIG_RR_INTERVAL > 0
tcb->timeslice = CONFIG_RR_INTERVAL;
#endif
/* Add the task in the correct location in the prioritized
* g_readytorun task list
*/
if (sched_addreadytorun(tcb))
{
/* The currently active task has changed! We need to do
* a context switch to the new task.
*
* Are we in an interrupt handler?
*/
if (current_regs)
{
/* Yes, then we have to do things differently.
* Just copy the current_regs into the OLD rtcb.
*/
up_copystate(rtcb->xcp.regs, current_regs);
/* Restore the exception context of the rtcb at the (new) head
* of the g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* Then switch contexts */
up_copystate(current_regs, rtcb->xcp.regs);
}
/* We are not in an interrupt andler. Copy the user C context
* into the TCB of the task that was previously active. if
* up_saveusercontext returns a non-zero value, then this is really the
* previously running task restarting!
*/
else if (!up_saveusercontext(rtcb->xcp.regs))
{
/* Restore the exception context of the new task that is ready to
* run (probably tcb). This is the new rtcb at the head of the
* g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* Then switch contexts */
up_fullcontextrestore(rtcb->xcp.regs);
}
}
}
}

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/************************************************************
* up_undefinedinsn.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Functions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_undefinedinsn
************************************************************/
void up_undefinedinsn(uint32 *regs)
{
PANIC(OSERR_UNDEFINEDINSN);
}

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/************************************************************
* up_usestack.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/kmalloc.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/************************************************************
* Private Types
************************************************************/
/************************************************************
* Private Function Prototypes
************************************************************/
/************************************************************
* Global Functions
************************************************************/
/************************************************************
* Name: up_use_stack
*
* Description:
* Setup up stack-related information in the TCB
* using pre-allocated stack memory
*
* The following TCB fields must be initialized:
* adj_stack_size: Stack size after adjustment for hardware,
* processor, etc. This value is retained only for debug
* purposes.
* stack_alloc_ptr: Pointer to allocated stack
* adj_stack_ptr: Adjusted StatckAllocPtr for HW. The
* initial value of the stack pointer.
*
* Inputs:
* tcb: The TCB of new task
* stack_size: The allocated stack size.
*
************************************************************/
STATUS up_use_stack(_TCB *tcb, uint32 *stack, uint32 stack_size)
{
uint32 top_of_stack;
uint32 size_of_stack;
if (tcb->stack_alloc_ptr)
{
sched_free(tcb->stack_alloc_ptr);
}
/* Save the stack allocation */
tcb->stack_alloc_ptr = stack;
/* The Arm7Tdmi uses a push-down stack: the stack grows
* toward loweraddresses in memory. The stack pointer
* register, points to the lowest, valid work address
* (the "top" of the stack). Items on the stack are
* referenced as positive word offsets from sp.
*/
top_of_stack = (uint32)tcb->stack_alloc_ptr + stack_size - 4;
/* The Arm7Tdmi stack must be aligned at word (4 byte)
* boundaries. If necessary top_of_stack must be rounded
* down to the next boundary
*/
top_of_stack &= ~3;
size_of_stack = top_of_stack - (uint32)tcb->stack_alloc_ptr + 4;
/* Save the adjusted stack values in the _TCB */
tcb->adj_stack_size = top_of_stack;
tcb->adj_stack_size = size_of_stack;
return OK;
}

449
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/************************************************************
* up_vectors.S
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <nuttx/irq.h>
#include "c5471.h"
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Global Data
************************************************************/
.data
up_irqtmp:
.word 0 /* Saved lr */
.word 0 /* Saved spsr */
up_undeftmp:
.word 0 /* Saved lr */
.word 0 /* Saved spsr */
up_aborttmp:
.word 0 /* Saved lr */
.word 0 /* Saved spsr */
/************************************************************
* Macros
************************************************************/
/************************************************************
* Private Functions
************************************************************/
.text
/************************************************************
* Public Functions
************************************************************/
.text
/************************************************************
* Name: up_vectorirq
*
* Description:
* Interrupt excetpion. Entered in IRQ mode with spsr = SVC
* CPSR, lr = SVC PC
************************************************************/
.global up_vectorirq
.type up_vectorirq, %function
up_vectorirq:
/* On entry, we are in IRQ mode. We are free to use
* the IRQ mode r13 and r14.
*
*/
ldr r13, .Lirqtmp
sub lr, lr, #4
str lr, [r13] @ save lr_IRQ
mrs lr, spsr
str lr, [r13, #4] @ save spsr_IRQ
/* Then switch back to SVC mode */
bic lr, lr, #MODE_MASK /* Keep F and T bits */
orr lr, lr, #I_BIT | SVC_MODE
msr spsr_c, lr /* Swith to SVC mode */
/* Create a context structure */
sub sp, sp, #XCPTCONTEXT_SIZE
stmia sp, {r0-r3, r12} /* Save volatile regs */
ldr r0, .Lirqtmp /* Points to temp storage */
ldr lr, [r0] /* Recover lr */
ldr r3, [r0, $4] /* Recover SPSR */
add r1, sp, #XCPTCONTEXT_UOFFSET
stmia r1, {r3-r11, r13-r14} /* Save SPSR+r4-r11+lr+sp */
/* Now decode the interrupt */
#if 0
ldr lr, =SRC_IRQ_BIN_REG /* Fetch encoded IRQ */
ldr r0, [lr]
and r0, r0, #0x0f /* Valid range is 0..15 */
/* Problems here... cannot read SRC_IRQ_BIN_REQ (and/or
* SRC_IRQ_REQ because this will clear edge triggered
* interrupts. Plus, no way to validate spurious
* interrupt.
*/
#else
ldr r6, =SRC_IRQ_REG
ldr r6, [r6] /* Get source IRQ reg */
mov r0, #0 /* Assume IRQ0_IRQ set */
.Lmorebits:
tst r6, #1 /* Is IRQ set? */
bne .Lhaveirq /* Yes... we have the IRQ */
add r0, r0, #1 /* Setup next IRQ */
mov r6, r6, lsr #1 /* Shift right one */
cmp r0, #16 /* Only 16 valid bits */
bcc .Lmorebits /* Keep until we have looked
* at all bits */
b .Lnoirqset /* If we get here, there is
* no pending interrupt */
.Lhaveirq:
#endif
/* Then call the data abort handler with interrupt disabled.
* rq_dispatch(int irq, struct xcptcontext *xcp)
*/
mov fp, #0 /* Init frame pointer */
mov r1, sp /* Get r1=xcp */
bl up_prefetchabort /* Call the handler */
/* Recover the SVC_MODE registers */
.Lnoirqset:
add r0, sp, #XCPTCONTEXT_UOFFSET
ldmia r0, {r3-r11, r13-r14}
msr spsr, r3
ldmia sp, {r0-r3, r12} /* recover volatile regs */
add sp, sp, #XCPTCONTEXT_SIZE
movs pc, lr /* return & move spsr into cpsr */
@
@ now branch to the relevent MODE handling routine
@
and lr, lr, #15
ldr lr, [pc, lr, lsl #2]
movs pc, lr @ Changes mode and branches
.Lirqtmp:
.word up_irqtmp
.align 5
/************************************************************
* Function: up_vectorswi
*
* Description:
* SWI interrupt. We enter the SWI in SVC mode
************************************************************/
.align 5
.global up_vectorswi
.type up_vectorswi, %function
up_vectorswi:
/* The c547x rrload bootloader intemediates all
* interrupts. For the* case of the SWI, it mucked
* with the stack to create some temporary registers.
* We'll have to recover from this mucking here.
*/
ldr r14, [sp,#-0x4] /* rrload workaround */
/* Create a context structure */
sub sp, sp, #XCPTCONTEXT_SIZE
stmia sp, {r0-r3, r12} /* Save volatile regs */
mrs r3, spsr /* Get r3=interrupted CPSR */
add r0, sp, #XCPTCONTEXT_UOFFSET
stmia r0, {r3-r11, r13-r14} /* Save CPSR+r4-r11+lr+sp */
/* Then call the SWI handler with interrupt disabled.
* void up_syscall(struct xcptcontext *xcp)
*/
mov fp, #0 /* Init frame pointer */
mov r0, sp /* Get r0=xcp */
bl up_syscall /* Call the handler */
.LignoreSWI:
/* Recover the SVC_MODE registers */
add r0, sp, #XCPTCONTEXT_UOFFSET
ldmia r0, {r3-r11, r13-r14}
msr spsr, r3
ldmia sp, {r0-r3, r12} /* recover volatile regs */
add sp, sp, #XCPTCONTEXT_SIZE
movs pc, lr /* return & move spsr into cpsr */
/************************************************************
* Name: up_vectordata
*
* Description:
* Data abort Exception dispatcher. Give control to data
* abort handler. This function is entered in ABORT mode
* with spsr = SVC CPSR, lr = SVC PC
*
************************************************************/
.text
.global up_vectordata
.type up_vectordata, %function
up_vectordata:
/* On entry we are free to use the ABORT mode registers
* r13 and r14
*/
ldr r13, .Ldaborttmp /* Points to temp storage */
sub lr, lr, #8 /* Fixup return */
str lr, [r13] /* Save in temp storage */
mrs lr, spsr /* Get SPSR */
str lr, [r13, #4] /* Save in temp storage */
/* Then switch back to SVC mode */
bic lr, lr, #MODE_MASK /* Keep F and T bits */
orr lr, lr, #I_BIT | SVC_MODE
msr spsr_c, lr /* Swith to SVC mode */
/* Create a context structure */
sub sp, sp, #XCPTCONTEXT_SIZE
stmia sp, {r0-r3, r12} /* Save volatile regs */
ldr r0, .Ldaborttmp /* Points to temp storage */
ldr lr, [r0] /* Recover lr */
ldr r3, [r0, $4] /* Recover SPSR */
add r1, sp, #XCPTCONTEXT_UOFFSET
stmia r1, {r3-r11, r13-r14} /* Save SPSR+r4-r11+lr+sp */
/* Then call the data abort handler with interrupt disabled.
* void up_dataabort(struct xcptcontext *xcp)
*/
mov fp, #0 /* Init frame pointer */
mov r0, sp /* Get r0=xcp */
bl up_dataabort /* Call the handler */
/* Recover the SVC_MODE registers */
add r0, sp, #XCPTCONTEXT_UOFFSET
ldmia r0, {r3-r11, r13-r14}
msr spsr, r3
ldmia sp, {r0-r3, r12} /* recover volatile regs */
add sp, sp, #XCPTCONTEXT_SIZE
movs pc, lr /* return & move spsr into cpsr */
@
@ now branch to the relevent MODE handling routine
@
and lr, lr, #15
ldr lr, [pc, lr, lsl #2]
movs pc, lr @ Changes mode and branches
.Ldaborttmp:
.word up_aborttmp
.align 5
/************************************************************
* Name: up_vectorprefetch
*
* Description:
* Prefetch abort exception. Entered in ABT mode with
* spsr = SVC CPSR, lr = SVC PC
************************************************************/
.global up_vectorprefetch
.type up_vectorprefetch, %function
up_vectorprefetch:
/* On entry we are free to use the ABORT mode registers
* r13 and r14
*/
ldr r13, .Lpaborttmp /* Points to temp storage */
sub lr, lr, #4 /* Fixup return */
str lr, [r13] /* Save in temp storage */
mrs lr, spsr /* Get SPSR */
str lr, [r13, #4] /* Save in temp storage */
/* Then switch back to SVC mode */
bic lr, lr, #MODE_MASK /* Keep F and T bits */
orr lr, lr, #I_BIT | SVC_MODE
msr spsr_c, lr /* Swith to SVC mode */
/* Create a context structure */
sub sp, sp, #XCPTCONTEXT_SIZE
stmia sp, {r0-r3, r12} /* Save volatile regs */
ldr r0, .Lpaborttmp /* Points to temp storage */
ldr lr, [r0] /* Recover lr */
ldr r3, [r0, $4] /* Recover SPSR */
add r1, sp, #XCPTCONTEXT_UOFFSET
stmia r1, {r3-r11, r13-r14} /* Save SPSR+r4-r11+lr+sp */
/* Then call the data abort handler with interrupt disabled.
* void up_prefetchabort(struct xcptcontext *xcp)
*/
mov fp, #0 /* Init frame pointer */
mov r0, sp /* Get r0=xcp */
bl up_prefetchabort /* Call the handler */
/* Recover the SVC_MODE registers */
add r0, sp, #XCPTCONTEXT_UOFFSET
ldmia r0, {r3-r11, r13-r14}
msr spsr, r3
ldmia sp, {r0-r3, r12} /* recover volatile regs */
add sp, sp, #XCPTCONTEXT_SIZE
movs pc, lr /* return & move spsr into cpsr */
@
@ now branch to the relevent MODE handling routine
@
and lr, lr, #15
ldr lr, [pc, lr, lsl #2]
movs pc, lr @ Changes mode and branches
.Lpaborttmp:
.word up_aborttmp
.align 5
/************************************************************
* Name: up_vectorundefinsn
*
* Description:
* Undefined instruction entry exception. Entered in
* UND mode, spsr = SVC CPSR, lr = SVC PC
*
************************************************************/
.global up_vectorundefinsn
.type up_vectorundefinsn, %function
up_vectorundefinsn:
/* On entry we are free to use the UND mode registers
* r13 and r14
*/
ldr r13, .Lundeftmp /* Points to temp storage */
str lr, [r13] /* Save in temp storage */
mrs lr, spsr /* Get SPSR */
str lr, [r13, #4] /* Save in temp storage */
/* Then switch back to SVC mode */
bic lr, lr, #MODE_MASK /* Keep F and T bits */
orr lr, lr, #I_BIT | SVC_MODE
msr spsr_c, lr /* Swith to SVC mode */
/* Create a context structure */
sub sp, sp, #XCPTCONTEXT_SIZE
stmia sp, {r0-r3, r12} /* Save volatile regs */
ldr r0, .Lundeftmp /* Points to temp storage */
ldr lr, [r0] /* Recover lr */
ldr r3, [r0, $4] /* Recover SPSR */
add r1, sp, #XCPTCONTEXT_UOFFSET
stmia r1, {r3-r11, r13-r14} /* Save SPSR+r4-r11+lr+sp */
/* Then call the data abort handler with interrupt disabled.
* void up_undefinedinsn(struct xcptcontext *xcp)
*/
mov fp, #0 /* Init frame pointer */
mov r0, sp /* Get r0=xcp */
bl up_undefinedinsn /* Call the handler */
/* Recover the SVC_MODE registers */
add r0, sp, #XCPTCONTEXT_UOFFSET
ldmia r0, {r3-r11, r13-r14}
msr spsr, r3
ldmia sp, {r0-r3, r12} /* recover volatile regs */
add sp, sp, #XCPTCONTEXT_SIZE
movs pc, lr /* return & move spsr into cpsr */
@
@ now branch to the relevent MODE handling routine
@
and lr, lr, #15
ldr lr, [pc, lr, lsl #2]
movs pc, lr @ Changes mode and branches
.Lundeftmp:
.word up_undeftmp
.align 5
/************************************************************
* Name: up_vectorfiq
*
* Description:
* Shouldn't happen
************************************************************/
.global up_vectorfiq
.type up_vectorfiq, %function
up_vectorfiq:
subs pc, lr, #4
/************************************************************
* Name: up_vectoraddrexcption
*
* Description:
* Shouldn't happen
*
************************************************************/
.global up_vectoraddrexcptn
.type up_vectoraddrexcptn, %function
up_vectoraddrexcptn:
b up_vectoraddrexcptn
.end

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############################################################
# Make.defs
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################
include ${TOPDIR}/.config
ifeq ("${CONFIG_DEBUG}","y")
ARCHOPTIMIZATION = -g
else
ARCHOPTIMIZATION = -O2
endif
ARCHCPUFLAGS =
ARCHPICFLAGS = -fpic
ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
ARCHDEFINES =
ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
ARCHSCRIPT =
CROSSDEV =
CC = $(CROSSDEV)gcc
LD = $(CROSSDEV)ld
AR = $(CROSSDEV)ar
NM = $(CROSSDEV)nm
OBJCOPY = $(CROSSDEV)objcopy
OBJDUMP = $(CROSSDEV)objdump
CFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
$(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) -pipe
LDFLAGS = $(ARCHSCRIPT)
EXTRA_LIBS = -lc
ifeq ("${CONFIG_DEBUG}","y")
LDFLAGS += -g
endif

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############################################################
# defconfig
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################
#
# architecture selection
#
# CONFIG_ARCH - identifies the arch subdirectory
# CONFIG_ARCH_name - for use in C code
#
CONFIG_ARCH=sim
CONFIG_ARCH_SIM=y
#
# General OS setup
#
# CONFIG_EXAMPLE - identifies the subdirectgory in examples
# that will be used in the build
# CONFIG_DEBUG - enables built-in debug options
# CONFIG_DEBUG_VERBOSE - enables verbose debug output
# CONFIG_HAVE_LOWPUTC - architecture supports low-level, boot
# time console output
# CONFIG_RR_INTERVAL - The round robin timeslice will be set
# this number of milliseconds; Round robin scheduling can
# be disabled by setting this value to zero.
# CONFIG_SCHED_INSTRUMENTATION - enables instrumentation in
# scheduler to monitor system performance
# CONFIG_TASK_NAME_SIZE - Spcifies that maximum size of a
# task name to save in the TCB. Useful if scheduler
# instrumentation is selected. Set to zero to disable.
# CONFIG_JULIAN_TIME - Enables Julian time conversions
# CONFIG_START_YEAR, CONFIG_START_MONTH, CONFIG_START_DAY -
# Used to initialize the internal time logic.
# CONFIG_DEV_CONSOLE - Set if architecture-specific logic
# provides /dev/console. Enables stdout, stderr, stdin.
#
CONFIG_EXAMPLE=ostest
CONFIG_DEBUG=y
CONFIG_DEBUG_VERBOSE=y
CONFIG_ARCH_LOWPUTC=y
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_INSTRUMENTATION=n
CONFIG_TASK_NAME_SIZE=32
CONFIG_START_YEAR=2007
CONFIG_START_MONTH=2
CONFIG_START_DAY=13
CONFIG_JULIAN_TIME=n
CONFIG_DEV_CONSOLE=y
#
# Allow for artchitecture optimized implementations
#
# The architecture can provide optimized versions of the
# following to improve sysem performance
#
CONFIG_ARCH_MEMCPY=n
CONFIG_ARCH_MEMCMP=n
CONFIG_ARCH_MEMMOVE=n
CONFIG_ARCH_MEMSET=n
CONFIG_ARCH_STRCMP=n
CONFIG_ARCH_STRCPY=n
CONFIG_ARCH_STRNCPY=n
CONFIG_ARCH_STRLEN=n
CONFIG_ARCH_BZERO=n
CONFIG_ARCH_KMALLOC=n
CONFIG_ARCH_KZMALLOC=n
CONFIG_ARCH_KFREE=n
# General Compile environment setup
#
# CONFIG_HAVE_LONG_LONG - enable if your architecture supports
# long long types and if you plan to use them
CONFIG_HAVE_LONG_LONG=n
#
# Sizes of configurable things (0 disables)
#
# CONFIG_NPTHREAD_KEYS - The number of items of thread-
# specific data that can be retained
# CONFIG_NFILE_DESCRIPTORS - The maximum number of file
# descriptors (one for each open)
# CONFIG_NFILE_STREAMS - The maximum number of streams that
# can be fopen'ed
# CONFIG_STDIO_BUFFER_SIZE - Size of the buffer to allocate
# on fopen. (Only if CONFIG_NFILE_STREAMS > 0)
# CONFIG_NUNGET_CHARS - Number of characters that can be
# buffered by ungetc() (Only if CONFIG_NFILE_STREAMS > 0)
# CONFIG_PREALLOC_MQ_MSGS - The number of pre-allocated message
# structures. The system manages a pool of preallocated
# message structures to minimize dynamic allocations
# CONFIG_MQ_MAXMSGSIZE - Message structures are allocated with
# a fixed payload size given by this settin (does not include
# other message structure overhead.
# CONFIG_PREALLOC_WDOGS - The number of pre-allocated watchdog
# structures. The system manages a pool of preallocated
# watchdog structures to minimize dynamic allocations
#
CONFIG_NPTHREAD_KEYS=4
CONFIG_NFILE_DESCRIPTORS=32
CONFIG_NFILE_STREAMS=16
CONFIG_STDIO_BUFFER_SIZE=1024
CONFIG_NUNGET_CHARS=2
CONFIG_PREALLOC_MQ_MSGS=32
CONFIG_MQ_MAXMSGSIZE=32
CONFIG_PREALLOC_WDOGS=32
#
# Stack and heap information
#
# CONFIG_BOOT_FROM_FLASH - Some configurations support XIP
# operation from FLASH.
# CONFIG_STACK_POINTER - The initial stack pointer
# CONFIG_PROC_STACK_SIZE - The size of the initial stack
# CONFIG_PTHREAD_STACK_MIN - Minimum pthread stack size
# CONFIG_PTHREAD_STACK_DEFAULT - Default pthread stack size
# CONFIG_HEAP_BASE - The beginning of the heap
# CONFIG_HEAP_SIZE - The size of the heap
#
CONFIG_BOOT_FROM_FLASH=n
CONFIG_PROC_STACK_SIZE=0x00001000
CONFIG_PTHREAD_STACK_MIN=256
CONFIG_PTHREAD_STACK_DEFAULT=8192
CONFIG_HEAP_BASE=
CONFIG_HEAP_SIZE=

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/************************************************************
* arch.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/* This file should never be included directed but, rather,
* only indirectly through nuttx/arch.h
*/
#ifndef __ARCH_ARCH_H
#define __ARCH_ARCH_H
/************************************************************
* Included Files
************************************************************/
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Inline functions
************************************************************/
/************************************************************
* Public Types
************************************************************/
/************************************************************
* Public Variables
************************************************************/
/************************************************************
* Public Function Prototypes
************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ARCH_ARCH_H */

106
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/************************************************************
* irq.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/* This file should never be included directed but, rather,
* only indirectly through nuttx/irq.h
*/
#ifndef __ARCH_IRQ_H
#define __ARCH_IRQ_H
/************************************************************
* Included Files
************************************************************/
/************************************************************
* Definitions
************************************************************/
#define NR_IRQS 0
/************************************************************
* Public Types
************************************************************/
/* This struct defines the way the registers are stored */
#ifndef __ASSEMBLY__
struct xcptcontext
{
void *sigdeliver; /* Actual type is sig_deliver_t */
/* Storage order: %ebx, $esi, %edi, %ebp, sp, and return PC */
int regs[6];
};
#endif
/************************************************************
* Inline functions
************************************************************/
#ifndef __ASSEMBLY__
static inline uint32 irqsave(void)
{
return 0;
}
static inline void irqrestore(uint32 flags)
{
}
#endif
/************************************************************
* Public Variables
************************************************************/
/************************************************************
* Public Function Prototypes
************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ARCH_IRQ_H */

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/************************************************************
* types.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/* This file should never be included directed but, rather,
* only indirectly through sys/types.h
*/
#ifndef __ARCH_TYPES_H
#define __ARCH_TYPES_H
/************************************************************
* Included Files
************************************************************/
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Type Declarations
************************************************************/
typedef char sbyte;
typedef unsigned char ubyte;
typedef unsigned char uint8;
typedef unsigned char boolean;
typedef short sint16;
typedef unsigned short uint16;
typedef int sint32;
typedef unsigned int uint32;
typedef long long sint64;
typedef unsigned long long uint64;
/************************************************************
* Global Function Prototypes
************************************************************/
#endif /* __ARCH_TYPES_H */

45
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#!/bin/sh
# setenv.sh
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
if [ "$(basename $0)" = "setenv" ] ; then
echo "You must source this script, not run it!" 1>&2
exit 1
fi
if [ -z ${PATH_ORIG} ]; then export PATH_ORIG=${PATH}; fi
#export NUTTX_BIN=
#export PATH=${NUTTX_BIN}:/sbin:/usr/sbin:${PATH_ORIG}
echo "PATH : ${PATH}"

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############################################################
# Makefile
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################
-include $(TOPDIR)/Make.defs
MKDEP = $(TOPDIR)/tools/mkdeps.sh
CFLAGS += -I$(TOPDIR)/sched
ASRCS = up_setjmp.S
AOBJS = $(ASRCS:.S=.o)
CSRCS = up_initialize.c up_idle.c up_interruptcontext.c up_initialstate.c \
up_createstack.c up_usestack.c up_releasestack.c \
up_unblocktask.c up_blocktask.c up_releasepending.c up_reprioritizertr.c \
up_exit.c up_schedulesigaction.c up_allocateheap.c up_devconsole.c
COBJS = $(CSRCS:.c=.o)
SRCS = $(ASRCS) $(CSRCS)
OBJS = $(AOBJS) $(COBJS)
all: up_head.o libarch.a
$(AOBJS): %.o: %.S
$(CC) -c $(CFLAGS) -D__ASSEMBLY__ $< -o $@
$(COBJS) up_head.o: %.o: %.c
$(CC) -c $(CFLAGS) $< -o $@
libarch.a: $(OBJS)
$(AR) rcs $@ $(OBJS)
.depend: Makefile $(SRCS)
$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
touch $@
depend: .depend
clean:
rm -f libarch.a *.o *~
distclean: clean
rm -f Make.dep .depend
-include Make.dep

81
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/************************************************************
* up_allocateheap.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
static ubyte sim_heap[SIM_HEAP_SIZE];
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_allocate_heap
*
* Description:
* The heap may be statically allocated by
* defining CONFIG_HEAP_BASE and CONFIG_HEAP_SIZE. If these
* are not defined, then this function will be called to
* dynamically set aside the heap region.
*
************************************************************/
void up_allocate_heap(void **heap_start, size_t *heap_size)
{
*heap_start = sim_heap;
*heap_size = SIM_HEAP_SIZE;
}

157
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/************************************************************
* up_blocktask.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_block_task
*
* Description:
* The currently executing task at the head of
* the ready to run list must be stopped. Save its context
* and move it to the inactive list specified by task_state.
*
* Inputs:
* tcb: Refers to a task in the ready-to-run list (normally
* the task at the the head of the list). It most be
* stopped, its context saved and moved into one of the
* waiting task lists. It it was the task at the head
* of the ready-to-run list, then a context to the new
* ready to run task must be performed.
* task_state: Specifies which waiting task list should be
* hold the blocked task TCB.
*
************************************************************/
void up_block_task(_TCB *tcb, tstate_t task_state)
{
/* Verify that the context switch can be performed */
if ((tcb->task_state < FIRST_READY_TO_RUN_STATE) ||
(tcb->task_state > LAST_READY_TO_RUN_STATE))
{
PANIC(OSERR_BADBLOCKSTATE);
}
else
{
_TCB *rtcb = (_TCB*)g_readytorun.head;
boolean switch_needed;
dbg("Blocking TCB=%p\n", tcb);
/* Remove the tcb task from the ready-to-run list. If we
* are blocking the task at the head of the task list (the
* most likely case), then a context switch to the next
* ready-to-run task is needed. In this case, it should
* also be true that rtcb == tcb.
*/
switch_needed = sched_removereadytorun(tcb);
/* Add the task to the specified blocked task list */
sched_addblocked(tcb, (tstate_t)task_state);
/* If there are any pending tasks, then add them to the g_readytorun
* task list now
*/
if (g_pendingtasks.head)
{
switch_needed |= sched_mergepending();
}
/* Now, perform the context switch if one is needed */
if (switch_needed)
{
/* Copy the exception context into the TCB at the (old) head of the
* g_readytorun Task list. if up_setjmp returns a non-zero
* value, then this is really the previously running task restarting!
*/
if (!up_setjmp(rtcb->xcp.regs))
{
/* Restore the exception context of the rtcb at the (new) head
* of the g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* The way that we handle signals in the simulation is kind of
* a kludge. This would be unsafe in a truly multi-threaded, interrupt
* driven environment.
*/
if (rtcb->xcp.sigdeliver)
{
dbg("Delivering signals TCB=%p\n", rtcb);
((sig_deliver_t)rtcb->xcp.sigdeliver)(rtcb);
rtcb->xcp.sigdeliver = NULL;
}
/* Then switch contexts */
up_longjmp(rtcb->xcp.regs, 1);
}
}
}
}

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/************************************************************
* up_createstack.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/arch.h>
#include <nuttx/kmalloc.h>
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_create_stack
*
* Description:
* Allocate a stack for a new thread and setup
* up stack-related information in the TCB.
*
* The following TCB fields must be initialized:
* adj_stack_size: Stack size after adjustment for hardware,
* processor, etc. This value is retained only for debug
* purposes.
* stack_alloc_ptr: Pointer to allocated stack
* adj_stack_ptr: Adjusted StatckAllocPtr for HW. The
* initial value of the stack pointer.
*
* Inputs:
* tcb: The TCB of new task
* stack_size: The requested stack size. At least this much
* must be allocated.
*
************************************************************/
STATUS up_create_stack(_TCB *tcb, uint32 stack_size)
{
STATUS ret = ERROR;
/* Move up to next even word boundary if necessary */
uint32 adj_stack_size = (stack_size + 3) & ~3;
uint32 adj_stack_words = adj_stack_size >> 2;
/* Allocate the memory for the stack */
uint32 *stack_alloc_ptr = (uint32*)kmalloc(adj_stack_size);
if (stack_alloc_ptr)
{
/* This is the address of the last word in the allocation */
uint32 *adj_stack_ptr = &stack_alloc_ptr[adj_stack_words - 1];
/* Save the values in the TCB */
tcb->adj_stack_size = adj_stack_size;
tcb->stack_alloc_ptr = stack_alloc_ptr;
tcb->adj_stack_ptr = adj_stack_ptr;
ret = OK;
}
return ret;
}

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/************************************************************
* up_devconsole.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdio.h>
#include <errno.h>
#include <nuttx/fs.h>
#include "up_internal.h"
/************************************************************
* Definitions
************************************************************/
#define READ 3
#define WRITE 4
/************************************************************
* Private Function Prototypes
************************************************************/
static ssize_t devconsole_read(struct file *, char *, size_t);
static ssize_t devconsole_write(struct file *, const char *, size_t);
/************************************************************
* Private Data
************************************************************/
static struct file_operations devconsole_fops =
{
.read = devconsole_read,
.write = devconsole_write,
};
/************************************************************
* Private Functions
************************************************************/
static inline int up_read(int fd, void* buf, size_t count)
{
uint32 result;
__asm__ volatile ("int $0x80" \
: "=a" (result) \
: "0" (READ), "b" ((uint32)(fd)), "c" ((uint32)(buf)), "d" ((uint32)(count)) \
: "memory");
return (int)result;
}
static inline int up_write(int fd, const void* buf, size_t count)
{
uint32 result;
__asm__ volatile ("int $0x80" \
: "=a" (result) \
: "0" (WRITE), "b" ((uint32)(fd)), "c" ((uint32)(buf)), "d" ((uint32)(count)) \
: "memory");
return (int)result;
}
static inline int up_check_result(int result)
{
if (result >= (uint32)(-(128 + 1)))
{
*get_errno_ptr() = -result;
result = ERROR;
}
return result;
}
static ssize_t devconsole_read(struct file *filp, char *buffer, size_t len)
{
return up_check_result(up_read(1, buffer, len));
}
static ssize_t devconsole_write(struct file *filp, const char *buffer, size_t len)
{
return up_check_result(up_write(1, buffer, len));
}
/************************************************************
* Public Funtions
************************************************************/
void up_devconsole(void)
{
(void)register_inode("/dev/console", &devconsole_fops, 0666, NULL);
}
int up_putc(int ch)
{
char b = ch;
(void)up_write(1, &b, 1);
return ch;
}

123
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/************************************************************
* up_exit.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: _exit
*
* Description:
* This function causes the currently executing task to cease
* to exist. This is a special case of task_delete().
*
************************************************************/
void _exit(int status)
{
_TCB* tcb = (_TCB*)g_readytorun.head;
dbg("TCB=%p exitting\n", tcb);
/* Remove the tcb task from the ready-to-run list. We can
* ignore the return value because we know that a context
* switch is needed.
*/
(void)sched_removereadytorun(tcb);
/* Move the TCB to the specified blocked task list and delete it */
sched_addblocked(tcb, TSTATE_TASK_INACTIVE);
task_delete(tcb->pid);
/* If there are any pending tasks, then add them to the g_readytorun
* task list now
*/
if (g_pendingtasks.head)
{
(void)sched_mergepending();
}
/* Now, perform the context switch to the new ready-to-run task at the
* head of the list.
*/
tcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", tcb);
/* The way that we handle signals in the simulation is kind of
* a kludge. This would be unsafe in a truly multi-threaded, interrupt
* driven environment.
*/
if (tcb->xcp.sigdeliver)
{
dbg("Delivering signals TCB=%p\n", tcb);
((sig_deliver_t)tcb->xcp.sigdeliver)(tcb);
tcb->xcp.sigdeliver = NULL;
}
/* Then switch contexts */
up_longjmp(tcb->xcp.regs, 1);
}

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/************************************************************
* up_head.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <setjmp.h>
#include <assert.h>
#include <nuttx/os_external.h>
#include <nuttx/arch.h>
/************************************************************
* Private Data
************************************************************/
static jmp_buf sim_abort;
/************************************************************
* Global Funtions
************************************************************/
int main(int argc, char **argv, char **envp)
{
if (setjmp(sim_abort) == 0)
{
os_start();
}
return 0;
}
void up_assert(const ubyte *filename, uint32 line)
{
fprintf(stderr, "Assertion failed at file:%s line: %d\n", filename, line);
longjmp(sim_abort, 1);
}
void up_assert_code(const ubyte *filename, uint32 line, uint16 code)
{
fprintf(stderr, "Assertion failed at file:%s line: %d error code: %d\n", filename, line, code);
longjmp(sim_abort, 1);
}

84
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/************************************************************
* up_idle.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_idle
*
* Description:
* up_idle() is the logic that will be executed when their
* is no other ready-to-run task. This is processor idle
* time and will continue until some interrupt occurs to
* cause a context switch from the idle task.
*
* Processing in this state may be processor-specific. e.g.,
* this is where power management operations might be
* performed.
*
************************************************************/
void up_idle(void)
{
/* If the system, then process timer interrupts. Hopefully
* something will wake up.
*/
sched_process_timer();
}

88
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/************************************************************
* up_initialize.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/arch.h>
#include <nuttx/fs.h>
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_initialize
*
* Description:
* up_initialize will be called once during OS
* initialization after the basic OS services have been
* initialized. The architecture specific details of
* initializing the OS will be handled here. Such things as
* setting up interrupt service routines, starting the
* clock, and registering device drivers are some of the
* things that are different for each processor and hardware
* platform.
*
* up_initialize is called after the OS initialized but
* before the init process has been started and before the
* libraries have been initialized. OS services and driver
* services are available.
*
************************************************************/
void up_initialize(void)
{
/* Register devices */
devnull_register(); /* Standard /dev/null */
up_devconsole(); /* Our private /dev/console */
}

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/************************************************************
* up_initialstate.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <string.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_initial_state
*
* Description:
* A new thread is being started and a new TCB
* has been created. This function is called to initialize
* the processor specific portions of the new TCB.
*
* This function must setup the intial architecture registers
* and/or stack so that execution will begin at tcb->start
* on the next context switch.
*
************************************************************/
void up_initial_state(_TCB *tcb)
{
memset(&tcb->xcp, 0, sizeof(struct xcptcontext));
tcb->xcp.regs[JB_SP] = (uint32)tcb->adj_stack_ptr;
tcb->xcp.regs[JB_PC] = (uint32)tcb->start;
}

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/**************************************************************************
* up_internal.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************/
#ifndef __ARCH_UP_INTERNAL_H
#define __ARCH_UP_INTERNAL_H
/**************************************************************************
* Included Files
**************************************************************************/
#include <nuttx/irq.h>
/**************************************************************************
* Public Definitions
**************************************************************************/
/* Storage order: %ebx, $esi, %edi, %ebp, sp, and return PC */
#ifdef __ASSEMBLY__
# define JB_EBX (0*4)
# define JB_ESI (1*4)
# define JB_EDI (2*4)
# define JB_EBP (3*4)
# define JB_SP (4*4)
# define JB_PC (5*4)
#else
# define JB_EBX (0)
# define JB_ESI (1)
# define JB_EDI (2)
# define JB_EBP (3)
# define JB_SP (4)
# define JB_PC (5)
#endif /* __ASSEMBLY__ */
#define SIM_HEAP_SIZE (4*1024*1024)
/**************************************************************************
* Public Types
**************************************************************************/
/**************************************************************************
* Public Variables
**************************************************************************/
/**************************************************************************
* Public Function Prototypes
**************************************************************************/
#ifndef __ASSEMBLY__
/* up_setjmp.S ************************************************************/
extern int up_setjmp(int *jb);
extern void up_longjmp(int *jb, int val) __attribute__ ((noreturn));
/* up_devconsole **********************************************************/
extern void up_devconsole(void);
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_UP_INTERNAL_H */

74
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/************************************************************
* up_interruptcontext.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_interrupt_context
*
* Description:
* Return TRUE is we are currently executing in
* the interrupt handler context.
************************************************************/
boolean up_interrupt_context(void)
{
/* The simulation is never in the interrupt state */
return FALSE;
}

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/************************************************************
* up_releasepending.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_release_pending
*
* Description:
* Release and ready-to-run tasks that have
* collected in the pending task list. This can call a
* context switch if a new task is placed at the head of
* the ready to run list.
*
************************************************************/
void up_release_pending(void)
{
_TCB *rtcb = (_TCB*)g_readytorun.head;
dbg("From TCB=%p\n", rtcb);
/* Merge the g_pendingtasks list into the g_readytorun task list */
/* sched_lock(); */
if (sched_mergepending())
{
/* The currently active task has changed! Copy the exception context
* into the TCB of the task that was currently active. if up_setjmp
* returns a non-zero value, then this is really the previously
* running task restarting!
*/
if (!up_setjmp(rtcb->xcp.regs))
{
/* Restore the exception context of the rtcb at the (new) head
* of the g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* The way that we handle signals in the simulation is kind of
* a kludge. This would be unsafe in a truly multi-threaded, interrupt
* driven environment.
*/
if (rtcb->xcp.sigdeliver)
{
dbg("Delivering signals TCB=%p\n", rtcb);
((sig_deliver_t)rtcb->xcp.sigdeliver)(rtcb);
rtcb->xcp.sigdeliver = NULL;
}
/* Then switch contexts */
up_longjmp(rtcb->xcp.regs, 1);
}
}
}

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/************************************************************
* up_releasestack.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdlib.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_release_stack
*
* Description:
* A task has been stopped. Free all stack
* related resources retained int the defunct TCB.
*
************************************************************/
void up_release_stack(_TCB *dtcb)
{
if (dtcb->stack_alloc_ptr)
{
free(dtcb->stack_alloc_ptr);
}
dtcb->stack_alloc_ptr = NULL;
dtcb->adj_stack_size = 0;
dtcb->adj_stack_ptr = NULL;
}

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/************************************************************
* up_reprioritizertr.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_reprioritize_rtr
*
* Description:
* Called when the priority of a running or
* ready-to-run task changes and the reprioritization will
* cause a context switch. Two cases:
*
* 1) The priority of the currently running task drops and the next
* task in the ready to run list has priority.
* 2) An idle, ready to run task's priority has been raised above the
* the priority of the current, running task and it now has the
* priority.
*
* Inputs:
* tcb: The TCB of the task that has been reprioritized
* priority: The new task priority
*
************************************************************/
void up_reprioritize_rtr(_TCB *tcb, ubyte priority)
{
/* Verify that the caller is sane */
if (tcb->task_state < FIRST_READY_TO_RUN_STATE ||
tcb->task_state > LAST_READY_TO_RUN_STATE ||
priority < SCHED_PRIORITY_MIN ||
priority > SCHED_PRIORITY_MAX)
{
PANIC(OSERR_BADREPRIORITIZESTATE);
}
else
{
_TCB *rtcb = (_TCB*)g_readytorun.head;
boolean switch_needed;
dbg("TCB=%p PRI=%d\n", tcb, priority);
/* Remove the tcb task from the ready-to-run list.
* sched_removereadytorun will return TRUE if we just
* remove the head of the ready to run list.
*/
switch_needed = sched_removereadytorun(tcb);
/* Setup up the new task priority */
tcb->sched_priority = (ubyte)priority;
/* Return the task to the specified blocked task list.
* sched_addreadytorun will return TRUE if the task was
* added to the new list. We will need to perform a context
* switch only if the EXCLUSIVE or of the two calls is non-zero
* (i.e., one and only one the calls changes the head of the
* ready-to-run list).
*/
switch_needed ^= sched_addreadytorun(tcb);
/* Now, perform the context switch if one is needed */
if (switch_needed)
{
/* If we are going to do a context switch, then now is the right
* time to add any pending tasks back into the ready-to-run list.
* task list now
*/
if (g_pendingtasks.head)
{
sched_mergepending();
}
/* Copy the exception context into the TCB at the (old) head of the
* g_readytorun Task list. if up_setjmp returns a non-zero
* value, then this is really the previously running task restarting!
*/
if (!up_setjmp(rtcb->xcp.regs))
{
/* Restore the exception context of the rtcb at the (new) head
* of the g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* The way that we handle signals in the simulation is kind of
* a kludge. This would be unsafe in a truly multi-threaded, interrupt
* driven environment.
*/
if (rtcb->xcp.sigdeliver)
{
dbg("Delivering signals TCB=%p\n", rtcb);
((sig_deliver_t)rtcb->xcp.sigdeliver)(rtcb);
rtcb->xcp.sigdeliver = NULL;
}
/* Then switch contexts */
up_longjmp(rtcb->xcp.regs, 1);
}
}
}
}

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/************************************************************
* up_schedulesigaction.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_schedule_sigaction
*
* Description:
* This function is called by the OS when one or more
* signal handling actions have been queued for execution.
* The architecture specific code must configure things so
* that the 'igdeliver' callback is executed on the thread
* specified by 'tcb' as soon as possible.
*
* This function may be called from interrupt handling logic.
*
* This operation should not cause the task to be unblocked
* nor should it cause any immediate execution of sigdeliver.
* Typically, a few cases need to be considered:
*
* (1) This function may be called from an interrupt handler
* During interrupt processing, all xcptcontext structures
* should be valid for all tasks. That structure should
* be modified to invoke sigdeliver() either on return
* from (this) interrupt or on some subsequent context
* switch to the recipient task.
* (2) If not in an interrupt handler and the tcb is NOT
* the currently executing task, then again just modify
* the saved xcptcontext structure for the recipient
* task so it will invoke sigdeliver when that task is
* later resumed.
* (3) If not in an interrupt handler and the tcb IS the
* currently executing task -- just call the signal
* handler now.
*
************************************************************/
void up_schedule_sigaction(_TCB *tcb, sig_deliver_t sigdeliver)
{
/* We don't have to anything complex of the simulated target */
if (tcb == (_TCB*)g_readytorun.head)
{
sigdeliver(tcb);
}
else
{
tcb->xcp.sigdeliver = sigdeliver;
}
}

129
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/**************************************************************************
* up_setjmp.S
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************/
/**************************************************************************
* Conditional Compilation Options
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include "up_internal.h"
/**************************************************************************
* Private Definitions
**************************************************************************/
/**************************************************************************
* Private Types
**************************************************************************/
/**************************************************************************
* Private Function Prototypes
**************************************************************************/
/**************************************************************************
* Global Variables
**************************************************************************/
/**************************************************************************
* Private Variables
**************************************************************************/
/**************************************************************************
* Private Functions
**************************************************************************/
/**************************************************************************
* Public Functions
**************************************************************************/
.text
.globl up_setjmp
.type up_setjmp, @function
up_setjmp:
/* %ebx, %esi, %edi, and %ebp must be preserved.
* save %ebx, $esi, and %edi now... */
movl 4(%esp), %eax
movl %ebx, (JB_EBX)(%eax)
movl %esi, (JB_ESI)(%eax)
movl %edi, (JB_EDI)(%eax)
/* Save the value of SP as will be after we return */
leal 4(%esp), %ecx
movl %ecx, (JB_SP)(%eax)
/* Save the return PC */
movl 0(%esp), %ecx
movl %ecx, (JB_PC)(%eax)
/* Save the framepointer */
movl %ebp, (JB_EBP)(%eax)
/* And return 0 */
xorl %eax, %eax
ret
.size up_setjmp, . - up_setjmp
.globl up_longjmp
.type up_longjmp, @function
up_longjmp:
movl 4(%esp), %ecx /* U_pthread_jmpbuf in %ecx. */
movl 8(%esp), %eax /* Second argument is return value. */
/* Save the return address now. */
movl (JB_PC)(%ecx), %edx
/* Restore registers. */
movl (JB_EBX)(%ecx), %ebx
movl (JB_ESI)(%ecx), %esi
movl (JB_EDI)(%ecx), %edi
movl (JB_EBP)(%ecx), %ebp
movl (JB_SP)(%ecx), %esp
/* Jump to saved PC. */
jmp *%edx
.size up_longjmp, . - up_longjmp

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/************************************************************
* up_unblocktask.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_unblock_task
*
* Description:
* A task is currently in an inactive task list
* but has been prepped to execute. Move the TCB to the
* ready-to-run list, restore its context, and start execution.
*
* Inputs:
* tcb: Refers to the tcb to be unblocked. This tcb is
* in one of the waiting tasks lists. It must be moved to
* the ready-to-run list and, if it is the highest priority
* ready to run taks, executed.
*
************************************************************/
void up_unblock_task(_TCB *tcb)
{
/* Verify that the context switch can be performed */
if ((tcb->task_state < FIRST_BLOCKED_STATE) ||
(tcb->task_state > LAST_BLOCKED_STATE))
{
PANIC(OSERR_BADUNBLOCKSTATE);
}
else
{
_TCB *rtcb = (_TCB*)g_readytorun.head;
dbg("Unblocking TCB=%p\n", tcb);
/* Remove the task from the blocked task list */
sched_removeblocked(tcb);
/* Reset its timeslice. This is only meaningful for round
* robin tasks but it doesn't here to do it for everything
*/
#if CONFIG_RR_INTERVAL > 0
tcb->timeslice = CONFIG_RR_INTERVAL;
#endif
/* Add the task in the correct location in the prioritized
* g_readytorun task list
*/
if (sched_addreadytorun(tcb))
{
/* The currently active task has changed! Copy the exception context
* into the TCB of the task that was previously active. if
* up_setjmp returns a non-zero value, then this is really the
* previously running task restarting!
*/
if (!up_setjmp(rtcb->xcp.regs))
{
/* Restore the exception context of the new task that is ready to
* run (probably tcb). This is the new rtcb at the head of the
* g_readytorun task list.
*/
rtcb = (_TCB*)g_readytorun.head;
dbg("New Active Task TCB=%p\n", rtcb);
/* The way that we handle signals in the simulation is kind of
* a kludge. This would be unsafe in a truly multi-threaded, interrupt
* driven environment.
*/
if (rtcb->xcp.sigdeliver)
{
dbg("Delivering signals TCB=%p\n", rtcb);
((sig_deliver_t)rtcb->xcp.sigdeliver)(rtcb);
rtcb->xcp.sigdeliver = NULL;
}
/* Then switch contexts */
up_longjmp(rtcb->xcp.regs, 1);
}
}
}
}

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/************************************************************
* up_usestack.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/************************************************************
* Private Definitions
************************************************************/
/************************************************************
* Private Data
************************************************************/
/************************************************************
* Private Funtions
************************************************************/
/************************************************************
* Public Funtions
************************************************************/
/************************************************************
* Name: up_use_stack
*
* Description:
* Setup up stack-related information in the TCB
* using pre-allocated stack memory
*
* The following TCB fields must be initialized:
* adj_stack_size: Stack size after adjustment for hardware,
* processor, etc. This value is retained only for debug
* purposes.
* stack_alloc_ptr: Pointer to allocated stack
* adj_stack_ptr: Adjusted StatckAllocPtr for HW. The
* initial value of the stack pointer.
*
* Inputs:
* tcb: The TCB of new task
* stack_size: The allocated stack size.
*
************************************************************/
STATUS up_use_stack(_TCB *tcb, uint32 *stack, uint32 stack_size)
{
/* Move up to next even word boundary if necessary */
uint32 adj_stack_size = stack_size & ~3;
uint32 adj_stack_words = adj_stack_size >> 2;
/* This is the address of the last word in the allocation */
uint32 *adj_stack_ptr = &stack[adj_stack_words - 1];
/* Save the values in the TCB */
tcb->adj_stack_size = adj_stack_size;
tcb->stack_alloc_ptr = stack;
tcb->adj_stack_ptr = adj_stack_ptr;
return OK;
}

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############################################################
# Makefile
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################
-include $(TOPDIR)/Make.defs
MKDEP = $(TOPDIR)/tools/mkdeps.sh
ASRCS =
AOBJS = $(ASRCS:.S=.o)
CSRCS = dev_null.c
COBJS = $(CSRCS:.c=.o)
SRCS = $(ASRCS) $(CSRCS)
OBJS = $(AOBJS) $(COBJS)
BIN = libdrivers.a
all: $(BIN)
$(AOBJS): %.o: %.S
$(CC) -c $(CFLAGS) -D__ASSEMBLY__ $< -o $@
$(cOBJS): %.o: %.c
$(CC) -c $(CFLAGS) $< -o $@
$(BIN): $(OBJS)
$(AR) rcs $@ $(OBJS)
.depend: Makefile $(SRCS)
$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
touch $@
depend: .depend
clean:
rm -f $(BIN) *.o *~
distclean: clean
rm -f Make.dep .depend
-include Make.dep

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/************************************************************
* dev_null.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Compilation Switches
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <string.h>
#include <errno.h>
#include <nuttx/fs.h>
/************************************************************
* Private Function Prototypes
************************************************************/
static ssize_t devnull_read(struct file *, char *, size_t);
static ssize_t devnull_write(struct file *, const char *, size_t);
/************************************************************
* Private Data
************************************************************/
static struct file_operations devnull_fops =
{
.read = devnull_read,
.write = devnull_write,
};
/************************************************************
* Private Functions
************************************************************/
static ssize_t devnull_read(struct file *filp, char *buffer, size_t len)
{
return 0; /* Return EOF */
}
static ssize_t devnull_write(struct file *filp, const char *buffer, size_t len)
{
return len; /* Say that everything was written */
}
/************************************************************
* Public Functions
************************************************************/
void devnull_register(void)
{
(void)register_inode("/dev/null", &devnull_fops, 0666, NULL);
}

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############################################################
# Makefile
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################
-include $(TOPDIR)/.config
-include $(TOPDIR)/Make.defs
MKDEP = $(TOPDIR)/tools/mkdeps.sh
ASRCS =
AOBJS = $(ASRCS:.S=.o)
CSRCS = main.c dev_null.c mutex.c cancel.c sem.c cond.c \
timedwait.c mqueue.c sighand.c
COBJS = $(CSRCS:.c=.o)
SRCS = $(ASRCS) $(CSRCS)
OBJS = $(AOBJS) $(COBJS)
BIN = lib$(CONFIG_EXAMPLE).a
all: $(BIN)
$(AOBJS): %.o: %.S
$(CC) -c $(CFLAGS) $< -o $@
$(COBJS): %.o: %.c
$(CC) -c $(CFLAGS) $< -o $@
$(BIN): $(OBJS)
$(AR) rcs $@ $(OBJS)
.depend: Makefile $(SRCS)
$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
touch $@
depend: .depend
clean:
rm -f $(BIN) *.o *~
distclean: clean
rm -f Make.dep .depend
-include Make.dep

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/***********************************************************************
* cancel.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
***********************************************************************/
#include <stdio.h>
#include <time.h>
#include <pthread.h>
#include <errno.h>
#include "ostest.h"
static pthread_mutex_t mutex;
static pthread_cond_t cond;
static void *thread_waiter(void *parameter)
{
int status;
/* Take the mutex */
printf("%s: Taking mutex\n", __FUNCTION__);
status = pthread_mutex_lock(&mutex);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_lock failed, status=%d\n", __FUNCTION__, status);
}
printf("%s: Starting wait for condition\n", __FUNCTION__);
/* Are we a non-cancelable thread? Yes, set the non-cancelable state */
if (!parameter)
{
printf("%s: Setting non-cancelable\n", __FUNCTION__);
status = pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
if (status != 0)
{
printf("%s: ERROR pthread_setcancelstate failed, status=%d\n", __FUNCTION__, status);
}
}
/* The wait -- we will never awaken from this. */
status = pthread_cond_wait(&cond, &mutex);
if (status != 0)
{
printf("%s: ERROR pthread_cond_wait failed, status=%d\n", __FUNCTION__, status);
}
/* Release the mutex */
printf("%s: Releasing mutex\n", __FUNCTION__);
status = pthread_mutex_unlock(&mutex);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_unlock failed, status=%d\n", __FUNCTION__, status);
}
/* Set the cancelable state */
printf("%s: Setting cancelable\n", __FUNCTION__);
status = pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
if (status != 0)
{
printf("%s: ERROR pthread_setcancelstate failed, status=%d\n", __FUNCTION__, status);
}
printf("%s: Exit with status 0x12345678\n", __FUNCTION__);
pthread_exit((void*)0x12345678);
return NULL;
}
static void start_thread(pthread_t *waiter, int cancelable)
{
pthread_attr_t attr;
int status;
/* Initialize the mutex */
printf("%s: Initializing mutex\n", __FUNCTION__);
status = pthread_mutex_init(&mutex, NULL);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_init failed, status=%d\n", __FUNCTION__, status);
}
/* Initialize the condition variable */
printf("%s: Initializing cond\n", __FUNCTION__);
status = pthread_cond_init(&cond, NULL);
if (status != 0)
{
printf("%s: ERROR pthread_cond_init failed, status=%d\n", __FUNCTION__, status);
}
/* Set up attributes */
status = pthread_attr_init(&attr);
if (status != 0)
{
printf("%s: pthread_attr_init failed, status=%d\n", __FUNCTION__, status);
}
status = pthread_attr_setstacksize(&attr, 16384);
if (status != 0)
{
printf("%s: pthread_attr_setstacksize failed, status=%d\n", __FUNCTION__, status);
}
/* Start the waiter thread */
printf("%s: Starting thread\n", __FUNCTION__);
status = pthread_create(waiter, NULL, thread_waiter, (void*)cancelable);
if (status != 0)
{
printf("%s: ERROR pthread_create failed, status=%d\n", __FUNCTION__, status);
}
/* Make sure that the waiter thread gets a chance to run */
printf("%s: Yielding\n", __FUNCTION__);
pthread_yield();
}
static void restart_thread(pthread_t *waiter, int cancelable)
{
int status;
/* Destroy the condition variable */
printf("%s: Destroying cond\n", __FUNCTION__);
status = pthread_cond_destroy(&cond);
if (status != 0)
{
printf("%s: ERROR pthread_cond_destroy failed, status=%d\n", __FUNCTION__, status);
}
/* Destroy the mutex */
printf("%s: Destroying mutex\n", __FUNCTION__);
status = pthread_cond_destroy(&cond);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_destroy failed, status=%d\n", __FUNCTION__, status);
}
/* Then restart the thread */
printf("%s: Re-starting thread\n", __FUNCTION__);
start_thread(waiter, cancelable);
}
void cancel_test(void)
{
pthread_t waiter;
void *result;
int status;
/* Test 1: Normal Cancel *********************************************/
/* Start the waiter thread */
printf("%s: Test 1: Normal Cancelation\n", __FUNCTION__);
printf("%s: Starting thread\n", __FUNCTION__);
start_thread(&waiter, 1);
/* Then cancel it. It should be in the pthread_cond_wait now */
printf("%s: Canceling thread\n", __FUNCTION__);
status = pthread_cancel(waiter);
if (status != 0)
{
printf("%s: ERROR pthread_cancel failed, status=%d\n", __FUNCTION__, status);
}
/* Then join to the thread to pick up the result */
printf("%s: Joining\n", __FUNCTION__);
status = pthread_join(waiter, &result);
if (status != 0)
{
printf("%s: ERROR pthread_join failed, status=%d\n", __FUNCTION__, status);
}
else
{
printf("%s: waiter exited with result=%p\n", __FUNCTION__, result);
if (result != PTHREAD_CANCELED)
{
printf("%s: ERROR expected result=%p\n", __FUNCTION__, PTHREAD_CANCELED);
}
else
{
printf("%s: PASS thread terminated with PTHREAD_CANCELED\n", __FUNCTION__);
}
}
/* Test 2: Cancel Detached Thread ************************************/
printf("%s: Test 2: Cancelation of detached thread\n", __FUNCTION__);
printf("%s: Re-starting thread\n", __FUNCTION__);
restart_thread(&waiter, 1);
/* Detach the thread */
status = pthread_detach(waiter);
if (status != 0)
{
printf("%s: ERROR pthread_detach, status=%d\n", __FUNCTION__, status);
}
/* Then cancel it. It should be in the pthread_cond_wait now */
printf("%s: Canceling thread\n", __FUNCTION__);
status = pthread_cancel(waiter);
if (status != 0)
{
printf("%s: ERROR pthread_cancel failed, status=%d\n", __FUNCTION__, status);
}
/* Join should now fail */
printf("%s: Joining\n", __FUNCTION__);
status = pthread_join(waiter, &result);
if (status == 0)
{
printf("%s: ERROR pthread_join succeeded\n", __FUNCTION__);
}
else if (status != ESRCH)
{
printf("%s: ERROR pthread_join failed but with wrong status=%d\n", __FUNCTION__, status);
}
else
{
printf("%s: PASS pthread_join failed with status=ESRCH\n", __FUNCTION__);
}
/* Test 3: Non-cancelable threads ************************************/
printf("%s: Test 3: Non-cancelable threads\n", __FUNCTION__);
printf("%s: Re-starting thread (non-cancelable)\n", __FUNCTION__);
restart_thread(&waiter, 0);
/* Then cancel it. It should be in the pthread_cond_wait now. The
* behavior here is non-standard: when the thread is at a cancelation
* point, it should be cancelable, even when cancelation is disable.
*
* The cancelation should succeed, because the cancelation is pending.
*/
printf("%s: Canceling thread\n", __FUNCTION__);
status = pthread_cancel(waiter);
if (status != 0)
{
printf("%s: ERROR pthread_cancel failed, status=%d\n", __FUNCTION__, status);
}
/* Signal the thread. It should wake up an restore the cancelable state.
* When the cancelable state is re-enabled, the thread should be canceled.
*/
status = pthread_mutex_lock(&mutex);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_lock failed, status=%d\n", __FUNCTION__, status);
}
status = pthread_cond_signal(&cond);
if (status != 0)
{
printf("%s: ERROR pthread_cond_signal failed, status=%d\n", __FUNCTION__, status);
}
status = pthread_mutex_unlock(&mutex);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_unlock failed, status=%d\n", __FUNCTION__, status);
}
}

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/***********************************************************************
* cond.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
***********************************************************************/
#include <stdio.h>
#include <pthread.h>
#include <unistd.h>
#include "ostest.h"
#ifndef NULL
# define NULL (void*)0
#endif
static volatile enum { RUNNING, MUTEX_WAIT, COND_WAIT} waiter_state;
static pthread_mutex_t mutex;
static pthread_cond_t cond;
static volatile int data_available = 0;
static int waiter_nloops = 0;
static int waiter_waits = 0;
static int waiter_nerrors = 0;
static int signaler_nloops = 0;
static int signaler_already = 0;
static int signaler_state = 0;
static int signaler_nerrors = 0;
static void *thread_waiter(void *parameter)
{
int status;
printf("%s: Started\n", __FUNCTION__);
for(;;)
{
/* Take the mutex */
waiter_state = MUTEX_WAIT;
status = pthread_mutex_lock(&mutex);
waiter_state = RUNNING;
if (status != 0)
{
printf("%s: ERROR pthread_mutex_lock failed, status=%d\n", __FUNCTION__, status);
waiter_nerrors++;
}
/* Check if data is available -- if data is not available then
* wait for it
*/
if (!data_available)
{
/* We are higher priority than the signaler thread so the
* only time that the signaler thread will have a chance to run is when
* we are waiting for the condition variable. In this case, pthread_cond_wait
* will automatically release the mutex for the signaler (then re-acquire
* the mutex before returning.
*/
waiter_state = COND_WAIT;
status = pthread_cond_wait(&cond, &mutex);
waiter_state = RUNNING;
if (status != 0)
{
printf("%s: ERROR pthread_cond_wait failed, status=%d\n", __FUNCTION__, status);
waiter_nerrors++;
}
waiter_waits++;
}
/* Now data should be available */
if (!data_available)
{
printf("%s: ERROR data not available after wait\n", __FUNCTION__);
waiter_nerrors++;
}
/* Clear data available */
data_available = 0;
/* Release the mutex */
status = pthread_mutex_unlock(&mutex);
if (status != 0)
{
printf("%s: ERROR waiter: pthread_mutex_unlock failed, status=%d\n", __FUNCTION__, status);
waiter_nerrors++;
}
waiter_nloops++;
}
}
static void *thread_signaler(void *parameter)
{
int status;
int i;
printf("%s: Started\n", __FUNCTION__);
for (i = 0; i < 32; i++)
{
/* Take the mutex. The waiter is higher priority and should
* run until it waits for the condition. So, at this point
* signaler should be waiting for the condition.
*/
status = pthread_mutex_lock(&mutex);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_lock failed, status=%d\n", __FUNCTION__, status);
signaler_nerrors++;
}
/* Verify the state */
if (waiter_state != COND_WAIT)
{
printf("%s: ERROR waiter state = %d != COND_WAITING\n", __FUNCTION__, waiter_state);
signaler_state++;
}
if (data_available)
{
printf("%s: ERROR data already available, waiter_state=%d\n", __FUNCTION__, waiter_state);
signaler_already++;
}
/* Set data available and signal the waiter */
data_available = 1;
status = pthread_cond_signal(&cond);
if (status != 0)
{
printf("%s: ERROR pthread_cond_signal failed, status=%d\n", __FUNCTION__, status);
signaler_nerrors++;
}
/* Release the mutex */
status = pthread_mutex_unlock(&mutex);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_unlock failed, status=%d\n", __FUNCTION__, status);
signaler_nerrors++;
}
signaler_nloops++;
}
printf("%s: Terminating\n", __FUNCTION__);
pthread_exit(NULL);
}
void cond_test(void)
{
pthread_t waiter;
pthread_t signaler;
pthread_attr_t attr;
struct sched_param sparam;
int prio_min;
int prio_max;
int prio_mid;
int status;
/* Initialize the mutex */
printf("%s: Initializing mutex\n", __FUNCTION__);
status = pthread_mutex_init(&mutex, NULL);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_init failed, status=%d\n", __FUNCTION__, status);
}
/* Initialize the condition variable */
printf("%s: Initializing cond\n", __FUNCTION__);
status = pthread_cond_init(&cond, NULL);
if (status != 0)
{
printf("%s: ERROR pthread_condinit failed, status=%d\n", __FUNCTION__, status);
}
/* Start the waiter thread at higher priority */
printf("%s: Starting waiter\n", __FUNCTION__);
status = pthread_attr_init(&attr);
if (status != 0)
{
printf("%s: pthread_attr_init failed, status=%d\n", __FUNCTION__, status);
}
prio_min = sched_get_priority_min(SCHED_FIFO);
prio_max = sched_get_priority_max(SCHED_FIFO);
prio_mid = (prio_min + prio_max) / 2;
sparam.sched_priority = prio_mid;
status = pthread_attr_setschedparam(&attr,&sparam);
if (status != OK)
{
printf("%s: pthread_attr_setschedparam failed, status=%d\n", __FUNCTION__, status);
}
else
{
printf("%s: Set thread 1 priority to %d\n", __FUNCTION__, sparam.sched_priority);
}
status = pthread_create(&waiter, &attr, thread_waiter, NULL);
if (status != 0)
{
printf("%s: pthread_create failed, status=%d\n", __FUNCTION__, status);
}
printf("%s: Starting signaler\n", __FUNCTION__);
status = pthread_attr_init(&attr);
if (status != 0)
{
printf("%s: pthread_attr_init failed, status=%d\n", __FUNCTION__, status);
}
sparam.sched_priority = (prio_min + prio_mid) / 2;
status = pthread_attr_setschedparam(&attr,&sparam);
if (status != OK)
{
printf("%s: pthread_attr_setschedparam failed, status=%d\n", __FUNCTION__, status);
}
else
{
printf("%s: Set thread 2 priority to %d\n", __FUNCTION__, sparam.sched_priority);
}
status = pthread_create(&signaler, &attr, thread_signaler, NULL);
if (status != 0)
{
printf("%s: pthread_create failed, status=%d\n", __FUNCTION__, status);
}
/* Wait for the threads to stop */
pthread_join(signaler, NULL);
printf("%s: signaler terminated, now cancel the waiter\n", __FUNCTION__);
pthread_detach(waiter);
pthread_cancel(waiter);
printf("%s: \tWaiter\tSignaler\n", __FUNCTION__);
printf("%s: Loops\t%d\t%d\n", __FUNCTION__, waiter_nloops, signaler_nloops);
printf("%s: Errors\t%d\t%d\n", __FUNCTION__, waiter_nerrors, signaler_nerrors);
printf("%s: \n%d times, waiter did not have to wait for data\n", __FUNCTION__, waiter_nloops - waiter_waits);
printf("%s: %d times, data was already available when the signaler run\n", __FUNCTION__, signaler_already);
printf("%s: %d times, the waiter was in an unexpected state when the signaler ran\n", __FUNCTION__, signaler_state);
}

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/************************************************************
* dev_null.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Compilation Switches
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <nuttx/os_external.h>
#include "ostest.h"
/************************************************************
* Private Data
************************************************************/
static char buffer[1024];
/************************************************************
* Public Functions
************************************************************/
int dev_null(void)
{
int nbytes;
int fd;
fd = open("/dev/null", O_RDWR);
if (fd < 0)
{
fprintf(stderr, "%s: Failed to open /dev/null\n", __FUNCTION__);
return -1;
}
nbytes = read(fd, buffer, 1024);
if (nbytes < 0)
{
fprintf(stderr, "%s: Failed to read from /dev/null\n", __FUNCTION__);
close(fd);
return -1;
}
printf("%s: Read %d bytes from /dev/null\n", __FUNCTION__, nbytes);
nbytes = write(fd, buffer, 1024);
if (nbytes < 0)
{
fprintf(stderr, "%s: Failed to write to /dev/null\n", __FUNCTION__);
close(fd);
return -1;
}
printf("%s: Wrote %d bytes to /dev/null\n", __FUNCTION__, nbytes);
close(fd);
return 0;
}

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/************************************************************
* main.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Compilation Switches
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/os_external.h>
#include <stdio.h>
#include <string.h>
#include <sched.h>
#include "ostest.h"
/************************************************************
* Definitions
************************************************************/
#define PRIORITY 100
#define STACKSIZE 8192
#define NARGS 4
#define ARG1 "Arg1"
#define ARG2 "Arg2"
#define ARG3 "Arg3"
#define ARG4 "Arg4"
/************************************************************
* Private Data
************************************************************/
static char write_data1[] = "Standard I/O Check: write fd=1\n";
static char write_data2[] = "Standard I/O Check: write fd=2\n";
static char *args[NARGS] = { ARG1, ARG2, ARG3, ARG4 };
/************************************************************
* Private Functions
************************************************************/
static int user_main(int argc, char *argv[])
{
int i;
printf("%s: Started with argc=%d\n", __FUNCTION__, argc);
/* Verify passed arguments */
if (argc != NARGS + 1)
{
fprintf(stderr, "%s: Error expected argc=%d got argc=%d\n",
__FUNCTION__, NARGS+1, argc);
}
for (i = 0; i <= NARGS; i++)
{
printf("%s: argv[%d]=\"%s\"\n", __FUNCTION__, i, argv[i]);
}
for (i = 1; i <= NARGS; i++)
{
if (strcmp(argv[i], args[i-1]) != 0)
{
fprintf(stderr, "%s: ERROR argv[%d]: Expected \"%s\" found \"%s\"\n",
__FUNCTION__, i, argv[i], args[i-1]);
}
}
/* Checkout /dev/null */
dev_null();
/* Verify pthreads and pthread mutex */
mutex_test();
/* Verify pthread cancellation */
cancel_test();
/* Verify pthreads and semaphores */
sem_test();
/* Verify pthreads and condition variables */
cond_test();
/* Verify pthreads and condition variable timed waits */
timedwait_test();
/* Verify pthreads and message queues */
mqueue_test();
/* Verify signal handlers */
sighand_test();
return 0;
}
/************************************************************
* Public Functions
************************************************************/
/************************************************************
* user_initialize
************************************************************/
void user_initialize(void)
{
/* stub */
}
/************************************************************
* user_start
************************************************************/
int user_start(int parm1, int parm2, int parm3, int parm4)
{
int result;
/* Verify that we can communicate */
write(1, write_data1, sizeof(write_data1));
printf("%s: Standard I/O Check: printf\n", __FUNCTION__);
write(2, write_data2, sizeof(write_data2));
fprintf(stderr, "%s: Standard I/O Check: fprintf to stderr\n", __FUNCTION__);
/* Verify that we can spawn a new task */
result = task_create("ostest", PRIORITY, STACKSIZE, user_main,
ARG1, ARG2, ARG3, ARG4);
if (result == ERROR)
{
fprintf(stderr, "%s: Failed to start user_main\n", __FUNCTION__);
}
else
{
printf("%s: Started user_main at PID=%d\n", __FUNCTION__, result);
}
return 0;
}

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/**************************************************************************
* mqueue.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include <stdio.h>
#include <string.h>
#include <pthread.h>
#include <mqueue.h>
#include <sched.h>
#include "ostest.h"
/**************************************************************************
* Private Definitions
**************************************************************************/
#define TEST_MESSAGE "This is a test and only a test"
#define TEST_MSGLEN (strlen(TEST_MESSAGE)+1)
/**************************************************************************
* Private Types
**************************************************************************/
/**************************************************************************
* Private Function Prototypes
**************************************************************************/
/**************************************************************************
* Global Variables
**************************************************************************/
/**************************************************************************
* Private Variables
**************************************************************************/
/**************************************************************************
* Private Functions
**************************************************************************/
/**************************************************************************
* Public Functions
**************************************************************************/
static void *sender_thread(void *arg)
{
mqd_t mqfd;
char msg_buffer[TEST_MSGLEN];
struct mq_attr attr;
int status = 0;
int nerrors = 0;
int i;
printf("%s: Starting\n", __FUNCTION__);
/* Fill in attributes for message queue */
attr.mq_maxmsg = 20;
attr.mq_msgsize = TEST_MSGLEN;
attr.mq_flags = 0;
/* Set the flags for the open of the queue.
* Make it a blocking open on the queue, meaning it will block if
* this process tries to send to the queue and the queue is full.
*
* O_CREAT - the queue will get created if it does not already exist.
* O_WRONLY - we are only planning to write to the queue.
*
* Open the queue, and create it if the receiving process hasn't
* already created it.
*/
mqfd = mq_open("testmq", O_WRONLY|O_CREAT, 0666, &attr);
if (mqfd < 0)
{
printf("%s: ERROR mq_open failed\n", __FUNCTION__);
pthread_exit((void*)1);
}
/* Fill in a test message buffer to send */
memcpy(msg_buffer, TEST_MESSAGE, TEST_MSGLEN);
/* Perform the send 10 times */
for (i = 0; i < 10; i++)
{
status = mq_send(mqfd, msg_buffer, TEST_MSGLEN, 42);
if (status < 0)
{
printf("%s: ERROR mq_send failure=%d on msg %d\n", __FUNCTION__, status, i);
nerrors++;
}
else
{
printf("%s: mq_send succeeded on msg %d\n", __FUNCTION__, i);
}
}
/* Close the queue and return success */
if (mq_close(mqfd) < 0)
{
printf("%s: ERROR mq_close failed\n", __FUNCTION__);
}
printf("%s: returning nerrors=%d\n", __FUNCTION__, nerrors);
return (void*)nerrors;
}
static void *receiver_thread(void *arg)
{
mqd_t mqfd;
char msg_buffer[TEST_MSGLEN];
struct mq_attr attr;
int nbytes;
int nerrors = 0;
int i;
printf("%s: Starting\n", __FUNCTION__);
/* Fill in attributes for message queue */
attr.mq_maxmsg = 20;
attr.mq_msgsize = TEST_MSGLEN;
attr.mq_flags = 0;
/* Set the flags for the open of the queue.
* Make it a blocking open on the queue, meaning it will block if
* this process tries to* send to the queue and the queue is full.
*
* O_CREAT - the queue will get created if it does not already exist.
* O_RDONLY - we are only planning to write to the queue.
*
* Open the queue, and create it if the sending process hasn't
* already created it.
*/
mqfd = mq_open("testmq", O_RDONLY|O_CREAT, 0666, &attr);
if (mqfd < 0)
{
printf("%s: ERROR mq_open failed\n", __FUNCTION__);
pthread_exit((void*)1);
}
/* Perform the receive 10 times */
for (i = 0; i < 10; i++)
{
nbytes = mq_receive(mqfd, msg_buffer, TEST_MSGLEN, 0);
if (nbytes < 0)
{
printf("%s: ERROR mq_receive failure on msg %d\n", __FUNCTION__, i);
nerrors++;
}
else if (nbytes != TEST_MSGLEN)
{
printf("%s: mq_receive return bad size %d on msg %d\n", __FUNCTION__, nbytes, i);
nerrors++;
}
else if (memcmp(TEST_MESSAGE, msg_buffer, nbytes) != 0)
{
int j;
printf("%s: mq_receive returned corrupt message on msg %d\n", __FUNCTION__, i);
printf("%s: i Expected Received\n", __FUNCTION__);
for (j = 0; j < TEST_MSGLEN-1; j++)
{
printf("%s: %2d %02x (%c) %02x\n",
__FUNCTION__,
j, TEST_MESSAGE[j], TEST_MESSAGE[j], msg_buffer[j] & 0x0ff);
}
printf("%s: %2d 00 %02x\n",
__FUNCTION__, j, msg_buffer[j] & 0xff);
}
else
{
printf("%s: mq_receive succeeded on msg %d\n", __FUNCTION__, i);
}
}
/* Close the queue and return success */
if (mq_close(mqfd) < 0)
{
printf("%s: ERROR mq_close failed\n", __FUNCTION__);
nerrors++;
}
pthread_exit((void*)nerrors);
/* Destroy the queue */
if (mq_unlink("testmq") < 0)
{
printf("%s: ERROR mq_close failed\n", __FUNCTION__);
nerrors++;
}
printf("%s: returning nerrors=%d\n", __FUNCTION__, nerrors);
return (void*)nerrors;
}
void mqueue_test(void)
{
pthread_t sender;
pthread_t receiver;
void *result;
pthread_attr_t attr;
struct sched_param sparam;
int prio_min;
int prio_max;
int prio_mid;
int status;
/* Start the sending thread at higher priority */
printf("%s: Starting receiver\n", __FUNCTION__);
status = pthread_attr_init(&attr);
if (status != 0)
{
printf("%s: pthread_attr_init failed, status=%d\n", __FUNCTION__, status);
}
status = pthread_attr_setstacksize(&attr, 16384);
if (status != 0)
{
printf("%s: pthread_attr_setstacksize failed, status=%d\n", __FUNCTION__, status);
}
prio_min = sched_get_priority_min(SCHED_FIFO);
prio_max = sched_get_priority_max(SCHED_FIFO);
prio_mid = (prio_min + prio_max) / 2;
sparam.sched_priority = prio_mid;
status = pthread_attr_setschedparam(&attr,&sparam);
if (status != OK)
{
printf("%s: pthread_attr_setschedparam failed, status=%d\n", __FUNCTION__, status);
}
else
{
printf("%s: Set receiver priority to %d\n", __FUNCTION__, sparam.sched_priority);
}
status = pthread_create(&receiver, &attr, receiver_thread, NULL);
if (status != 0)
{
printf("%s: pthread_create failed, status=%d\n", __FUNCTION__, status);
}
/* Start the sending thread at lower priority */
printf("%s: Starting sender\n", __FUNCTION__);
status = pthread_attr_init(&attr);
if (status != 0)
{
printf("%s: pthread_attr_init failed, status=%d\n", __FUNCTION__, status);
}
status = pthread_attr_setstacksize(&attr, 16384);
if (status != 0)
{
printf("%s: pthread_attr_setstacksize failed, status=%d\n", __FUNCTION__, status);
}
sparam.sched_priority = (prio_min + prio_mid) / 2;
status = pthread_attr_setschedparam(&attr,&sparam);
if (status != OK)
{
printf("%s: pthread_attr_setschedparam failed, status=%d\n", __FUNCTION__, status);
}
else
{
printf("%s: Set sender thread priority to %d\n", __FUNCTION__, sparam.sched_priority);
}
status = pthread_create(&sender, &attr, sender_thread, NULL);
if (status != 0)
{
printf("%s: pthread_create failed, status=%d\n", __FUNCTION__, status);
}
pthread_join(sender, &result);
if (result != (void*)0)
{
printf("%s: ERROR sender thread exited with %d errors\n", __FUNCTION__, (int)result);
}
pthread_cancel(receiver);
pthread_join(receiver, &result);
if (result != (void*)0)
{
printf("%s: ERROR receiver thread exited with %d errors\n", __FUNCTION__, (int)result);
}
}

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/***********************************************************************
* mutex.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
***********************************************************************/
#include <stdio.h>
#include <pthread.h>
#include "ostest.h"
#ifndef NULL
# define NULL (void*)0
#endif
#define NLOOPS 32
static pthread_mutex_t mut;
static volatile int my_mutex = 0;
static unsigned long nloops[2] = {0, 0};
static unsigned long nerrors[2] = {0, 0};
static void *thread_func(void *parameter)
{
int id = (int)parameter;
int ndx = id - 1;
int i;
for (nloops[ndx] = 0; nloops[ndx] < NLOOPS; nloops[ndx]++)
{
int status = pthread_mutex_lock(&mut);
if (status != 0)
{
printf("ERROR thread %d: pthread_mutex_lock failed, status=%d\n",
id, status);
}
if (my_mutex == 1)
{
printf("ERROR thread=%d: "
"my_mutex should be zero, instead my_mutex=%d\n",
id, my_mutex);
nerrors[ndx]++;
}
my_mutex = 1;
for (i = 0; i < 10; i++)
{
pthread_yield();
}
my_mutex = 0;
status = pthread_mutex_unlock(&mut);
if (status != 0)
{
printf("ERROR thread %d: pthread_mutex_unlock failed, status=%d\n",
id, status);
}
}
pthread_exit(NULL);
}
void mutex_test(void)
{
pthread_t thread1, thread2;
/* Initialize the mutex */
printf("Initializing mutex\n");
pthread_mutex_init(&mut, NULL);
/* Start two thread instances */
printf("Starting thread 1\n");
if ((pthread_create(&thread1, NULL, thread_func, (void*)1)) != 0)
{
printf("Error in thread#1 creation\n");
}
printf("Starting thread 2\n");
if ((pthread_create(&thread2, NULL, thread_func, (void*)2)) != 0)
{
printf("Error in thread#2 creation\n");
}
pthread_join(thread1, NULL);
pthread_join(thread2, NULL);
printf("%s:\t\tThread1\tThread2\n", __FUNCTION__);
printf("%s:\tLoops\t%ld\t%ld\n", __FUNCTION__, nloops[0], nloops[1]);
printf("%s:\tErrors\t%ld\t%ld\n", __FUNCTION__, nerrors[0], nerrors[1]);
}

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/************************************************************
* ostest.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __OSTEST_H
#define __OSTEST_H
/************************************************************
* Compilation Switches
************************************************************/
/************************************************************
* Included Files
************************************************************/
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Public Types
************************************************************/
/************************************************************
* Public Variables
************************************************************/
/************************************************************
* Public Function Prototypes
************************************************************/
/* dev_null.c ***********************************************/
extern int dev_null(void);
/* mutex.c **************************************************/
extern void mutex_test(void);
/* sem.c ****************************************************/
extern void sem_test(void);
/* cond.c ***************************************************/
extern void cond_test(void);
/* queue.c **************************************************/
extern void mqueue_test(void);
/* cancel.c *************************************************/
extern void cancel_test(void);
/* timedwait.c **********************************************/
extern void timedwait_test(void);
#endif /* __OSTEST_H */

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/***********************************************************************
* sem.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
***********************************************************************/
#include <sys/types.h>
#include <stdio.h>
#include <pthread.h>
#include <semaphore.h>
#include <sched.h>
#include "ostest.h"
#ifndef NULL
# define NULL (void*)0
#endif
static sem_t sem;
static void *waiter_func(void *parameter)
{
int id = (int)parameter;
int status;
int value;
printf("%s: Thread %d Started\n", __FUNCTION__, id);
/* Take the semaphore */
status = sem_getvalue(&sem, &value);
if (status < 0)
{
printf("%s: ERROR thread %d could not get semaphore value\n", __FUNCTION__, id);
}
else
{
printf("%s: Thread %d initial semaphore value = %d\n", __FUNCTION__, id, value);
}
printf("%s: Thread %d aiting on semaphore\n", __FUNCTION__, id);
status = sem_wait(&sem);
if (status != 0)
{
printf("%s: ERROR thread %d sem_wait failed\n", __FUNCTION__, id);
}
printf("%s: Thread %d awakened\n", __FUNCTION__, id);
status = sem_getvalue(&sem, &value);
if (status < 0)
{
printf("%s: ERROR thread %d could not get semaphore value\n", __FUNCTION__, id);
}
else
{
printf("%s: Thread %d new semaphore value = %d\n", __FUNCTION__, id, value);
}
printf("%s: Thread %d done\n", __FUNCTION__, id);
return NULL;
}
static void *poster_func(void *parameter)
{
int id = (int)parameter;
int status;
int value;
printf("%s: Thread %d started\n", __FUNCTION__, id);
/* Take the semaphore */
do
{
status = sem_getvalue(&sem, &value);
if (status < 0)
{
printf("%s: ERROR thread %d could not get semaphore value\n", __FUNCTION__, id);
}
else
{
printf("%s: Thread %d semaphore value = %d\n", __FUNCTION__, id, value);
}
if (value < 0)
{
printf("%s: Thread %d posting semaphore\n", __FUNCTION__, id);
status = sem_post(&sem);
if (status != 0)
{
printf("%s: ERROR thread %d sem_wait failed\n", __FUNCTION__, id);
}
pthread_yield();
status = sem_getvalue(&sem, &value);
if (status < 0)
{
printf("%s: ERROR thread %d could not get semaphore value\n", __FUNCTION__, id);
}
else
{
printf("%s: Thread %d new semaphore value = %d\n", __FUNCTION__, id, value);
}
}
}
while (value < 0);
printf("%s: Thread %d done\n", __FUNCTION__, id);
return NULL;
}
void sem_test(void)
{
pthread_t waiter_thread1;
pthread_t waiter_thread2;
pthread_t poster_thread;
struct sched_param sparam;
int prio_min;
int prio_max;
int prio_mid;
pthread_attr_t attr;
int status;
printf("%s: Initializing semaphore to 0\n", __FUNCTION__);
sem_init(&sem, 0, 0);
/* Start two waiter thread instances */
printf("%s: Starting waiter thread 1\n", __FUNCTION__);
status = pthread_attr_init(&attr);
if (status != OK)
{
printf("%s: pthread_attr_init failed, status=%d\n", __FUNCTION__, status);
}
prio_min = sched_get_priority_min(SCHED_FIFO);
prio_max = sched_get_priority_max(SCHED_FIFO);
prio_mid = (prio_min + prio_max) / 2;
sparam.sched_priority = (prio_mid + prio_max) / 2;
status = pthread_attr_setschedparam(&attr,&sparam);
if (status != OK)
{
printf("%s: pthread_attr_setschedparam failed, status=%d\n", __FUNCTION__, status);
}
else
{
printf("%s: Set thread 1 priority to %d\n", __FUNCTION__, sparam.sched_priority);
}
status = pthread_create(&waiter_thread1, &attr, waiter_func, (void*)1);
if (status != 0)
{
printf("%s: Error in thread 1 creation, status=%d\n", __FUNCTION__, status);
}
printf("%s: Starting waiter thread 2\n", __FUNCTION__);
status = pthread_attr_init(&attr);
if (status != 0)
{
printf("%s: pthread_attr_init failed, status=%d\n", __FUNCTION__, status);
}
sparam.sched_priority = prio_mid;
status = pthread_attr_setschedparam(&attr,&sparam);
if (status != OK)
{
printf("%s: pthread_attr_setschedparam failed, status=%d\n", __FUNCTION__, status);
}
else
{
printf("%s: Set thread 2 priority to %d\n", __FUNCTION__, sparam.sched_priority);
}
status = pthread_create(&waiter_thread2, &attr, waiter_func, (void*)2);
if (status != 0)
{
printf("%s: Error in thread 2 creation, status=%d\n", __FUNCTION__, status);
}
printf("%s: Starting poster thread 3\n", __FUNCTION__);
status = pthread_attr_init(&attr);
if (status != 0)
{
printf("%s: pthread_attr_init failed, status=%d\n", __FUNCTION__, status);
}
sparam.sched_priority = (prio_min + prio_mid) / 2;
status = pthread_attr_setschedparam(&attr,&sparam);
if (status != OK)
{
printf("%s: pthread_attr_setschedparam failed, status=%d\n", __FUNCTION__, status);
}
else
{
printf("%s: Set thread 3 priority to %d\n", __FUNCTION__, sparam.sched_priority);
}
status = pthread_create(&poster_thread, &attr, poster_func, (void*)3);
if (status != 0)
{
printf("%s: Error in thread 3 creation, status=%d\n", __FUNCTION__, status);
}
pthread_join(waiter_thread1, NULL);
pthread_join(waiter_thread2, NULL);
pthread_join(poster_thread, NULL);
}

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/***********************************************************************
* sighand.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
***********************************************************************/
#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
#include <pthread.h>
#include <semaphore.h>
#include <signal.h>
#include <sched.h>
#include <errno.h>
#include "ostest.h"
#ifndef NULL
# define NULL (void*)0
#endif
#define WAKEUP_SIGNAL 17
#define SIGVALUE_INT 42
static sem_t sem;
static boolean sigreceived = FALSE;
static boolean threadexited = FALSE;
static void wakeup_action(int signo, siginfo_t *info, void *ucontext)
{
sigset_t oldset;
sigset_t allsigs;
int status;
printf("%s: Received signal %d\n", __FUNCTION__, signo);
sigreceived = TRUE;
/* Check signo */
if (signo != WAKEUP_SIGNAL)
{
printf("%s: ERROR expected signo=%d\n", __FUNCTION__, WAKEUP_SIGNAL);
}
/* Check siginfo */
if (info->si_value.sival_int != SIGVALUE_INT)
{
printf("%s: ERROR sival_int=%d expected %d\n",
__FUNCTION__, info->si_value.sival_int, SIGVALUE_INT);
}
else
{
printf("%s: sival_int=%d\n", __FUNCTION__, info->si_value.sival_int);
}
if (info->si_signo != WAKEUP_SIGNAL)
{
printf("%s: ERROR expected si_signo=%d, got=%d\n",
__FUNCTION__, WAKEUP_SIGNAL, info->si_signo);
}
printf("%s: si_code=%d\n", __FUNCTION__, info->si_code);
/* Check ucontext_t */
printf("%s: ucontext=%p\n", __FUNCTION__, ucontext);
/* Check sigprocmask */
(void)sigfillset(&allsigs);
status = sigprocmask(SIG_SETMASK, NULL, &oldset);
if (status != OK)
{
printf("%s: ERROR sigprocmask failed, status=%d\n",
__FUNCTION__, status);
}
if (oldset != allsigs)
{
printf("%s: ERROR sigprocmask=%x expected=%x\n",
__FUNCTION__, oldset, allsigs);
}
}
static int waiter_main(int argc, char *argv[])
{
sigset_t sigset;
struct sigaction act;
struct sigaction oact;
int status;
printf("%s: Waiter started\n", __FUNCTION__);
printf("%s: Unmasking signal %d\n", __FUNCTION__, WAKEUP_SIGNAL);
(void)sigemptyset(&sigset);
(void)sigaddset(&sigset, WAKEUP_SIGNAL);
status = sigprocmask(SIG_UNBLOCK, &sigset, NULL);
if (status != OK)
{
printf("%s: ERROR sigprocmask failed, status=%d\n",
__FUNCTION__, status);
}
printf("%s: Registering signal handler\n", __FUNCTION__);
act.sa_sigaction = wakeup_action;
act.sa_flags = SA_SIGINFO;
(void)sigfillset(&act.sa_mask);
(void)sigdelset(&act.sa_mask, WAKEUP_SIGNAL);
status = sigaction(WAKEUP_SIGNAL, &act, &oact);
if (status != OK)
{
printf("%s: ERROR sigaction failed, status=%d\n", __FUNCTION__, status);
}
printf("%s: oact.sigaction=%p oact.sa_flags=%x oact.sa_mask=%x\n",
__FUNCTION__, oact.sa_sigaction, oact.sa_flags, oact.sa_mask);
/* Take the semaphore */
printf("%s: Waiting on semaphore\n", __FUNCTION__);
fflush(stdout);
status = sem_wait(&sem);
if (status != 0)
{
int error = *get_errno_ptr();
if (error == EINTR)
{
printf("%s: sem_wait() successfully interrupted by signal\n", __FUNCTION__);
}
else
{
printf("%s: ERROR sem_wait failed, errno=%d\n", __FUNCTION__, error);
}
}
else
{
printf("%s: ERROR awakened with no error!\n", __FUNCTION__);
}
printf("%s: done\n", __FUNCTION__);
fflush(stdout);
threadexited = TRUE;
return 0;
}
void sighand_test(void)
{
struct sched_param param;
union sigval sigvalue;
pid_t waiterpid;
int policy;
int status;
printf("%s: Initializing semaphore to 0\n", __FUNCTION__);
sem_init(&sem, 0, 0);
/* Start waiter thread */
printf("%s: Starting waiter task\n", __FUNCTION__);
status = sched_getparam (0, &param);
if (status != OK)
{
printf("%s: ERROR sched_getparam() failed\n", __FUNCTION__);
param.sched_priority = PTHREAD_DEFAULT_PRIORITY;
}
policy = sched_getscheduler(0);
if (policy == ERROR)
{
printf("%s: ERROR sched_getscheduler() failed\n", __FUNCTION__);
policy = SCHED_FIFO;
}
waiterpid = task_create("waiter", param.sched_priority,
PTHREAD_STACK_DEFAULT, waiter_main, 0, 0, 0, 0);
if (waiterpid == ERROR)
{
printf("%s: ERROR failed to start waiter_main\n", __FUNCTION__);
}
else
{
printf("%s: Started waiter_main pid=%d\n", __FUNCTION__, waiterpid);
}
/* Wait a bit */
fflush(stdout);
usleep(500*1000);
/* Then signal the waiter thread. */
sigvalue.sival_int = SIGVALUE_INT;
status = sigqueue(waiterpid, WAKEUP_SIGNAL, sigvalue);
if (status != OK)
{
printf("%s: ERROR sigqueue failed\n", __FUNCTION__);
task_delete(waiterpid);
}
/* Wait a bit */
fflush(stdout);
usleep(500*1000);
/* Then check the result */
if (!threadexited)
{
printf("%s: ERROR waiter task did not exit\n", __FUNCTION__);
}
if (!sigreceived)
{
printf("%s: ERROR signal handler did not run\n", __FUNCTION__);
}
printf("%s: done\n", __FUNCTION__);
fflush(stdout);
}

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/***********************************************************************
* timedwait.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
***********************************************************************/
#include <stdio.h>
#include <time.h>
#include <pthread.h>
#include <unistd.h>
#include "ostest.h"
static pthread_mutex_t mutex;
static pthread_cond_t cond;
static void *thread_waiter(void *parameter)
{
struct timespec time;
int status;
/* Take the mutex */
printf("%s: Taking mutex\n", __FUNCTION__);
status = pthread_mutex_lock(&mutex);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_lock failed, status=%d\n", __FUNCTION__, status);
}
printf("%s: Starting 5 second wait for condition\n", __FUNCTION__);
status = clock_gettime(CLOCK_REALTIME, &time);
if (status != 0)
{
printf("%s: ERROR clock_gettime failed\n", __FUNCTION__);
}
time.tv_sec += 5;
/* The wait -- no-one is ever going to awaken us */
status = pthread_cond_timedwait(&cond, &mutex, &time);
if (status != 0)
{
printf("%s: ERROR pthread_cond_timedwait failed, status=%d\n", __FUNCTION__, status);
}
/* Release the mutex */
printf("%s: Releasing mutex\n", __FUNCTION__);
status = pthread_mutex_unlock(&mutex);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_unlock failed, status=%d\n", __FUNCTION__, status);
}
printf("%s: Exit with status 0x12345678\n", __FUNCTION__);
pthread_exit((void*)0x12345678);
return NULL;
}
void timedwait_test(void)
{
pthread_t waiter;
pthread_attr_t attr;
struct sched_param sparam;
void *result;
int prio_max;
int status;
/* Initialize the mutex */
printf("%s: Initializing mutex\n", __FUNCTION__);
status = pthread_mutex_init(&mutex, NULL);
if (status != 0)
{
printf("%s: ERROR pthread_mutex_init failed, status=%d\n", __FUNCTION__, status);
}
/* Initialize the condition variable */
printf("%s: Initializing cond\n", __FUNCTION__);
status = pthread_cond_init(&cond, NULL);
if (status != 0)
{
printf("%s: ERROR pthread_condinit failed, status=%d\n", __FUNCTION__, status);
}
/* Start the waiter thread at higher priority */
printf("%s: Starting waiter\n", __FUNCTION__);
status = pthread_attr_init(&attr);
if (status != 0)
{
printf("%s: pthread_attr_init failed, status=%d\n", __FUNCTION__, status);
}
prio_max = sched_get_priority_max(SCHED_FIFO);
status = sched_getparam (getpid(), &sparam);
if (status != 0)
{
printf("%s: sched_getparam failed\n", __FUNCTION__);
sparam.sched_priority = PTHREAD_DEFAULT_PRIORITY;
}
sparam.sched_priority = (prio_max + sparam.sched_priority) / 2;
status = pthread_attr_setschedparam(&attr,&sparam);
if (status != OK)
{
printf("%s: pthread_attr_setschedparam failed, status=%d\n", __FUNCTION__, status);
}
else
{
printf("%s: Set thread 2 priority to %d\n", __FUNCTION__, sparam.sched_priority);
}
status = pthread_create(&waiter, &attr, thread_waiter, NULL);
if (status != 0)
{
printf("%s: pthread_create failed, status=%d\n", __FUNCTION__, status);
}
printf("%s: Joining\n", __FUNCTION__);
status = pthread_join(waiter, &result);
if (status != 0)
{
printf("%s: ERROR pthread_join failed, status=%d\n", __FUNCTION__, status);
}
else
{
printf("%s: waiter exited with result=%p\n", __FUNCTION__, result);
}
}

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############################################################
# Makefile
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name Gregory Nutt nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################
-include $(TOPDIR)/Make.defs
MKDEP = $(TOPDIR)/tools/mkdeps.sh
ASRCS =
AOBJS = $(ASRCS:.S=.o)
CSRCS = fs_open.c fs_close.c fs_read.c fs_write.c fs_ioctl.c fs_dup.c \
fs_files.c fs_inode.c
COBJS = $(CSRCS:.c=.o)
SRCS = $(ASRCS) $(CSRCS)
OBJS = $(AOBJS) $(COBJS)
BIN = libfs.a
all: $(BIN)
$(AOBJS): %.o: %.S
$(CC) -c $(CFLAGS) -D__ASSEMBLY__ $< -o $@
$(cOBJS): %.o: %.c
$(CC) -c $(CFLAGS) $< -o $@
$(BIN): $(OBJS)
$(AR) rcs $@ $(OBJS)
.depend: Makefile $(SRCS)
$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
touch $@
depend: .depend
clean:
rm -f $(BIN) *.o *~
distclean: clean
rm -f Make.dep .depend
-include Make.dep

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/************************************************************
* fs_close.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Compilation Switches
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#if CONFIG_NFILE_DESCRIPTORS >0
#include <sys/types.h>
#include <stdio.h>
#include <sched.h>
#include <errno.h>
#include <nuttx/fs.h>
#include "fs_internal.h"
/************************************************************
* Global Functions
************************************************************/
int close(int fd)
{
struct filelist *list;
/* Get the thread-specific file list */
list = sched_getfiles();
if (!list)
{
*get_errno_ptr() = EMFILE;
return ERROR;
}
if ((unsigned int)fd < CONFIG_NFILE_DESCRIPTORS)
{
struct inode *inode = list->fl_files[fd].f_inode;
if (inode)
{
files_release(fd);
inode_release(inode);
return OK;
}
}
*get_errno_ptr() = EBADF;
return ERROR;
}
#endif /* CONFIG_NFILE_DESCRIPTORS */

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/************************************************************
* fs_dup.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Compilation Switches
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#if CONFIG_NFILE_DESCRIPTORS > 0
#include <sys/types.h>
#include <unistd.h>
#include <sched.h>
#include <errno.h>
#include "fs_internal.h"
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Private Functions
************************************************************/
static inline boolean dup_isopen(int fd, struct filelist *list)
{
if ((unsigned int)fd >= CONFIG_NFILE_DESCRIPTORS ||
list->fl_files[fd].f_inode == NULL)
{
return FALSE;
}
else
{
return TRUE;
}
}
/************************************************************
* Global Functions
************************************************************/
int dup(int fildes)
{
struct filelist *list;
int fildes2;
/* Get the thread-specific file list */
list = sched_getfiles();
if (!list)
{
*get_errno_ptr() = EMFILE;
return ERROR;
}
/* Verify that fildes is a valid, open file descriptor */
if (!dup_isopen(fildes, list))
{
*get_errno_ptr() = EBADF;
return ERROR;
}
/* Increment the reference count on the contained inode */
inode_addref(list->fl_files[fildes].f_inode);
/* Then allocate a new file descriptor for the inode */
fildes2 = files_allocate(list->fl_files[fildes].f_inode,
list->fl_files[fildes].f_oflags,
list->fl_files[fildes].f_pos);
if (fildes2 < 0)
{
*get_errno_ptr() = EMFILE;
inode_release(list->fl_files[fildes].f_inode);
return ERROR;
}
return fildes2;
}
int dup2(int fildes1, int fildes2)
{
struct filelist *list;
/* Get the thread-specific file list */
list = sched_getfiles();
if (!list)
{
*get_errno_ptr() = EMFILE;
return ERROR;
}
/* Verify that fildes is a valid, open file descriptor */
if (!dup_isopen(fildes1, list))
{
*get_errno_ptr() = EBADF;
return ERROR;
}
/* Handle a special case */
if (fildes1 == fildes2)
{
return fildes1;
}
/* Verify fildes2 */
if ((unsigned int)fildes2 >= CONFIG_NFILE_DESCRIPTORS)
{
*get_errno_ptr() = EBADF;
return ERROR;
}
return files_dup(&list->fl_files[fildes1], &list->fl_files[fildes2]);
}
#endif /* CONFIG_NFILE_DESCRIPTORS */

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/************************************************************
* fs_files.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#if CONFIG_NFILE_DESCRIPTORS >0
#include <string.h>
#include <semaphore.h>
#include <assert.h>
#include <sched.h>
#include <errno.h>
#include <nuttx/fs.h>
#include <nuttx/kmalloc.h>
#include "fs_internal.h"
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Public Types
************************************************************/
/************************************************************
* Private Variables
************************************************************/
/************************************************************
* Private Variables
************************************************************/
/************************************************************
* Private Functions
************************************************************/
static void _files_semtake(struct filelist *list)
{
/* Take the semaphore (perhaps waiting) */
while (sem_wait(&list->fl_sem) != 0)
{
/* The only case that an error should occr here is if
* the wait was awakened by a signal.
*/
ASSERT(*get_errno_ptr() == EINTR);
}
}
static inline void _files_semgive(struct filelist *list)
{
sem_post(&list->fl_sem);
}
/************************************************************
* Pulblic Functions
************************************************************/
/* This is called from the FS initialization logic to configure
* the files.
*/
void files_initialize(void)
{
}
/* Allocate a list of files for a new task */
struct filelist *files_alloclist(void)
{
struct filelist *list;
list = (struct filelist*)kzmalloc(sizeof(struct filelist));
if (list)
{
/* Start with a reference count of one */
list->fl_crefs = 1;
/* Initialize the list access mutex */
(void)sem_init(&list->fl_sem, 0, 1);
}
return list;
}
/* Increase the reference count on a file list */
int files_addreflist(struct filelist *list)
{
if (list)
{
/* Increment the reference count on the list */
_files_semtake(list);
list->fl_crefs++;
_files_semgive(list);
}
return OK;
}
/* Release a reference to the file list */
int files_releaselist(struct filelist *list)
{
int crefs;
if (list)
{
/* Decrement the reference count */
_files_semtake(list);
crefs = --list->fl_crefs;
_files_semgive(list);
/* If the count decrements to zero, then there is no reference
* to the structure and it should be deallocated.
*/
if (crefs <= 0)
{
int i;
/* close each file descriptor */
for (i = 0; i < CONFIG_NFILE_DESCRIPTORS; i++)
{
struct inode *inode = list->fl_files[i].f_inode;
if (inode)
{
inode_release(inode);
}
}
/* Destroy the semaphore and release the filelist */
(void)sem_destroy(&list->fl_sem);
sched_free(list);
}
}
return OK;
}
/* Assign an inode to a specific files structure. this is the
* heart of dup2.
*/
int files_dup(struct file *filep1, struct file *filep2)
{
struct filelist *list;
if (!filep1 || !filep1->f_inode || !filep2)
{
*get_errno_ptr() = EBADF;
return ERROR;
}
list = sched_getfiles();
if (!list)
{
*get_errno_ptr() = EMFILE;
return ERROR;
}
_files_semtake(list);
/* If there is already an inode contained in the new file structure,
* release it (effectively closing the file).
*/
if (filep2->f_inode)
{
inode_release(filep2->f_inode);
}
/* Increment the reference count on the contained inode */
inode_addref(filep1->f_inode);
/* Then clone the file structure */
filep2->f_oflags = filep1->f_oflags;
filep2->f_pos = filep1->f_pos;
filep2->f_inode = filep1->f_inode;
_files_semgive(list);
return OK;
}
/* Allocate a struct files instance and associate it with an
* inode instance. Returns the file descriptor == index into
* the files array.
*/
int files_allocate(struct inode *inode, int oflags, off_t pos)
{
struct filelist *list;
int i;
list = sched_getfiles();
if (list)
{
_files_semtake(list);
for (i = 0; i < CONFIG_NFILE_DESCRIPTORS; i++)
{
if (!list->fl_files[i].f_inode)
{
list->fl_files[i].f_oflags = oflags;
list->fl_files[i].f_pos = pos;
list->fl_files[i].f_inode = inode;
_files_semgive(list);
return i;
}
}
_files_semgive(list);
}
return ERROR;
}
void files_release(int filedes)
{
struct filelist *list;
list = sched_getfiles();
if (list)
{
if (filedes >=0 && filedes < CONFIG_NFILE_DESCRIPTORS)
{
_files_semtake(list);
list->fl_files[filedes].f_oflags = 0;
list->fl_files[filedes].f_pos = 0;
list->fl_files[filedes].f_inode = NULL;
_files_semgive(list);
}
}
}
#endif /* CONFIG_NFILE_DESCRIPTORS */

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/************************************************************
* fs_inode.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Compilation Switches
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdlib.h>
#include <assert.h>
#include <semaphore.h>
#include <errno.h>
#include <nuttx/fs.h>
#include "fs_internal.h"
/************************************************************
* Private types
************************************************************/
/************************************************************
* Private Variables
************************************************************/
static sem_t tree_sem;
/************************************************************
* Public Variables
************************************************************/
struct inode *root_inode = NULL;
/************************************************************
* Private Functions
************************************************************/
static void _inode_semtake(void)
{
/* Take the semaphore (perhaps waiting) */
while (sem_wait(&tree_sem) != 0)
{
/* The only case that an error should occr here is if
* the wait was awakened by a signal.
*/
ASSERT(*get_errno_ptr() == EINTR);
}
}
static inline void _inode_semgive(void)
{
sem_post(&tree_sem);
}
static int _inode_compare(const char *fname,
struct inode *node)
{
char *nname = node->i_name;
if (!nname)
{
return 1;
}
if (!fname)
{
return -1;
}
for (;;)
{
/* At end of node name? */
if (!*nname)
{
/* Yes.. also end of find name? */
if (!*fname || *fname == '/')
{
/* Yes.. return match */
return 0;
}
else
{
/* No... return find name > node name */
return 1;
}
}
/* At end of find name?*/
else if (!*fname || *fname == '/')
{
/* Yes... return find name < node name */
return -1;
}
/* check for non-matching characters */
else if (*fname > *nname)
{
return 1;
}
else if (*fname < *nname)
{
return -1;
}
/* Not at the end of either string and all of the
* characters still match. keep looking.
*/
else
{
fname++;
nname++;
}
}
}
static inline int _inode_namelen(const char *name)
{
const char *tmp = name;
while(*tmp && *tmp != '/') tmp++;
return tmp - name;
}
static inline void _inode_namecpy(char *dest, const char *src)
{
while(*src && *src != '/') *dest++ = *src++;
*dest='\0';
}
static inline const char *_inode_nextname(const char *name)
{
while (*name && *name != '/') name++;
if (*name) name++;
return name;
}
static struct inode *_inode_alloc(const char *name,
struct file_operations *fops,
mode_t mode, void *private)
{
int namelen = _inode_namelen(name);
struct inode *node = malloc(FSNODE_SIZE(namelen));
if (node)
{
node->i_peer = NULL;
node->i_child = NULL;
node->i_ops = fops;
#ifdef CONFIG_FILE_MODE
node->i_mode = mode;
#endif
node->i_private = private;
_inode_namecpy(node->i_name, name);
}
return node;
}
static struct inode *_inode_find(const char **path,
struct inode **peer,
struct inode **parent)
{
const char *name = *path + 1; /* Skip over leading '/' */
struct inode *node = root_inode;
struct inode *left = NULL;
struct inode *above = NULL;
while (node)
{
int result = _inode_compare(name, node);
/* Case 1: The name is less than the name of the node.
* Since the names are ordered, these means that there
* is no peer node with this name and that there can be
* no match in the fileystem.
*/
if (result < 0)
{
node = NULL;
break;
}
/* Case 2: the name is greater than the name of the node.
* In this case, the name may still be in the list to the
* "right"
*/
else if (result > 0)
{
left = node;
node = node->i_peer;
}
/* The names match */
else
{
/* Now there are two more possibilities:
* (1) This is the node that we are looking for or,
* (2) the node we are looking for is "blow" this one.
*/
name = _inode_nextname(name);
if (!*name)
{
/* We are at the end of the path, so this must be
* the node we are looking for.
*/
break;
}
else
{
/* More to go, keep looking at the next level "down" */
above = node;
left = NULL;
node = node->i_child;
}
}
}
/* node is null. This can happen in one of four cases:
* With node = NULL
* (1) We went left past the final peer: The new node
* name is larger than any existing node name at
* that level.
* (2) We broke out in the middle of the list of peers
* because the name was not found in the ordered
* list.
* (3) We went down past the final parent: The new node
* name is "deeper" than anything that we currently
* have in the tree.
* with node != NULL
* (4) When the node matching the full path is found
*/
if (peer) *peer = left;
if (parent) *parent = above;
*path = name;
return node;
}
static void _inode_insert(struct inode *node,
struct inode *peer,
struct inode *parent)
{
/* If peer is non-null, then new node simply goes to the right
* of that peer node.
*/
if (peer)
{
node->i_peer = peer->i_peer;
peer->i_peer = node;
}
/* If parent is non-null, then it must go at the head of its
* list of children.
*/
else if (parent)
{
node->i_peer = parent->i_child;
parent->i_child = node;
}
/* Otherwise, this must be the new root_inode */
else
{
node->i_peer = root_inode;
root_inode = node;
}
}
static void _inode_remove(struct inode *node,
struct inode *peer,
struct inode *parent)
{
/* If peer is non-null, then remove the node from the right of
* of that peer node.
*/
if (peer)
{
peer->i_peer = node->i_peer;
}
/* If parent is non-null, then remove the node from head of
* of the list of children.
*/
else if (parent)
{
parent->i_child = node->i_peer;
}
/* Otherwise, we must be removing the root inode. */
else
{
root_inode = node->i_peer;
}
node->i_peer = NULL;
}
static void _inode_free(struct inode *node)
{
if (node)
{
_inode_free(node->i_peer);
_inode_free(node->i_child);
free(node);
}
}
/************************************************************
* Public Functions
************************************************************/
/* This is called from the OS initialization logic to configure
* the file system.
*/
void fs_initialize(void)
{
/* Initialize the semaphore to one (to support one-at-
* a-time access to the inode tree).
*/
(void)sem_init(&tree_sem, 0, 1);
/* Initialize files array (if it is used) */
if (files_initialize != NULL)
{
files_initialize();
}
}
/* This is called from the open() logic to get a reference
* to the inode associatged with a path.
*/
struct inode *inode_find(const char *path)
{
struct inode *node;
if (!*path || path[0] != '/')
{
return NULL;
}
/* Find the node matching the path. If found,
* increment the count of references on the node.
*/
_inode_semtake();
node = _inode_find(&path, NULL, NULL);
if (node) node->i_crefs++;
_inode_semgive();
return node;
}
/* Increment the reference count on an inode (as when a file
* descriptor is dup'ed.
*/
void inode_addref(struct inode *inode)
{
if (inode)
{
_inode_semtake();
inode->i_crefs++;
_inode_semgive();
}
}
/* This is called from close() logic when it no longer refers
* to the inode.
*/
void inode_release(struct inode *node)
{
if (node)
{
/* Decrement the references of the inode */
_inode_semtake();
if (node->i_crefs) node->i_crefs--;
/* If the subtree was previously deleted and the reference
* count has decrement to zero, then delete the inode
* now.
*/
if (node->i_crefs <= 0 && (node->i_flags & FSNODEFLAG_DELETED) != 0)
{
_inode_semgive();
_inode_free(node->i_child);
free(node);
}
else
{
_inode_semgive();
}
}
}
STATUS register_inode(const char *path,
struct file_operations *fops,
mode_t mode, void *private)
{
const char *name = path;
struct inode *left;
struct inode *parent;
if (!*path || path[0] != '/')
{
return ERROR;
}
/* Find the location to insert the new subtree */
_inode_semtake();
if (_inode_find(&name, &left, &parent) != NULL)
{
/* Is is an error if the node already exists in the tree */
_inode_semgive();
return ERROR;
}
/* Now we now where to insert the subtree */
for (;;)
{
struct inode *node;
/* Create a new node -- we need to know if this is the
* the leaf node or some intermediary. We can find this
* by looking at the next name.
*/
const char *next_name = _inode_nextname(name);
if (*next_name)
{
/* Insert an operationless node */
node = _inode_alloc(name, NULL, mode, NULL);
if (node)
{
_inode_insert(node, left, parent);
/* Set up for the next time through the loop */
name = next_name;
left = NULL;
parent = node;
continue;
}
}
else
{
node = _inode_alloc(name, fops, mode, private);
if (node)
{
_inode_insert(node, left, parent);
_inode_semgive();
return 0;
}
}
/* We get here on failures to allocate node memory */
_inode_semgive();
return ERROR;
}
}
STATUS unregister_inode(const char *path)
{
const char *name = path;
struct inode *node;
struct inode *left;
struct inode *parent;
if (*path && path[0] == '/')
{
return ERROR;
}
/* Find the node to delete */
_inode_semtake();
node = _inode_find(&name, &left, &parent);
if (node)
{
/* Found it, now remove it from the tree */
_inode_remove(node, left, parent);
/* We cannot delete it if there reference to the inode */
if (node->i_crefs)
{
/* In that case, we will mark it deleted, when the FS
* releases the inode, we will then, finally delete
* the subtree.
*/
node->i_flags |= FSNODEFLAG_DELETED;
_inode_semgive();
}
else
{
/* And delete it now -- recursively to delete all of its children */
_inode_semgive();
_inode_free(node->i_child);
free(node);
return OK;
}
}
/* The node does not exist or it has references */
_inode_semgive();
return ERROR;
}

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/************************************************************
* fs_internal.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __FS_INTERNAL_H
#define __FS_INTERNAL_H
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <nuttx/fs.h>
#include <nuttx/compiler.h>
/************************************************************
* Definitions
************************************************************/
#define FSNODEFLAG_DELETED 0x00000001
/************************************************************
* Public Types
************************************************************/
/************************************************************
* Global Variables
************************************************************/
#if CONFIG_NFILE_DESCRIPTORS >0
extern struct file files[CONFIG_NFILE_DESCRIPTORS];
#endif
extern struct inode *root_inode;
/************************************************************
* Inline Functions
************************************************************/
/************************************************************
* Pulblic Function Prototypes
************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/* fs_inode.c ***********************************************/
EXTERN struct inode *inode_find(const char *path);
EXTERN void inode_addref(struct inode *inode);
EXTERN void inode_release(struct inode *inode);
/* fs_files.c ***********************************************/
#if CONFIG_NFILE_DESCRIPTORS >0
EXTERN void weak_function files_initialize(void);
EXTERN int files_allocate(struct inode *inode, int oflags, off_t pos);
EXTERN void files_release(int filedes);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __FS_INTERNAL_H */

75
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/************************************************************
* fs_ioctl.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Compilation Switches
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdio.h>
#include <errno.h>
#include "fs_internal.h"
/************************************************************
* Global Functions
************************************************************/
int ioctl(int fd, int req, unsigned long arg)
{
int ret = EBADF;
/* We we give a valid file descriptor? */
if ((unsigned int)fd < CONFIG_NFILE_DESCRIPTORS)
{
struct file *this_file = &files[fd];
struct inode *inode = this_file->f_inode;
/* Is a driver registered? Does it support the ioctl method? */
if (inode && inode->i_ops && inode->i_ops->ioctl)
{
/* Yes, then let it perform the ioctl */
ret = (int)inode->i_ops->ioctl(this_file, req, arg);
}
}
return ret;
}

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/************************************************************
* fs_open.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Compilation Switches
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#if CONFIG_NFILE_DESCRIPTORS >0
#include <sys/types.h>
#include <stdio.h>
#include <sched.h>
#include <errno.h>
#ifdef CONFIG_FILE_MODE
#include <stdarg.h>
#endif
#include <nuttx/fs.h>
#include <errno.h>
#include "fs_internal.h"
/************************************************************
* Private Functions
************************************************************/
/************************************************************
* Public Functions
************************************************************/
int inode_checkflags(struct inode *inode, int oflags)
{
if (((oflags & O_RDOK) != 0 && !inode->i_ops->read) ||
((oflags & O_WROK) != 0 && !inode->i_ops->write))
{
*get_errno_ptr() = EACCES;
return ERROR;
}
else
{
return OK;
}
}
int open(const char *path, int oflags, ...)
{
struct filelist *list;
struct inode *inode;
int status;
int fd;
/* Get the thread-specific file list */
list = sched_getfiles();
if (!list)
{
*get_errno_ptr() = EMFILE;
return ERROR;
}
#ifdef CONFIG_FILE_MODE
# warning "File creation not implemented"
mode_t mode = 0;
/* If the file is opened for creation, then get the mode bits */
if (oflags & (O_WRONLY|O_CREAT) != 0)
{
va_list ap;
va_start(ap, oflags);
mode = va_arg(ap, mode_t);
va_end(ap);
}
#endif
/* Get an inode for this file */
inode = inode_find(path);
if (!inode)
{
/* "O_CREAT is not set and the named file does not exist. Or,
* a directory component in pathname does not exist or is a
* dangling symbolic link.
*/
*get_errno_ptr() = ENOENT;
return ERROR;
}
/* Make sure that the inode supports the requested access */
if (inode_checkflags(inode, oflags) != OK)
{
inode_release(inode);
return ERROR;
}
/* Associate the inode with a file structure */
fd = files_allocate(inode, oflags, 0);
if (fd < 0)
{
inode_release(inode);
*get_errno_ptr() = EMFILE;
return ERROR;
}
/* Perform the driver open operation */
status = OK;
if (inode->i_ops && inode->i_ops->open)
{
status = inode->i_ops->open(&list->fl_files[fd]);
}
if (status != OK || !inode->i_ops)
{
files_release(fd);
inode_release(inode);
*get_errno_ptr() = ENODEV;
return ERROR;
}
return fd;
}
#endif /* CONFIG_NFILE_DESCRIPTORS */

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/************************************************************
* fs_read.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Compilation Switches
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#if CONFIG_NFILE_DESCRIPTORS >0
#include <sys/types.h>
#include <stdio.h>
#include <sched.h>
#include <errno.h>
#include "fs_internal.h"
/************************************************************
* Global Functions
************************************************************/
int read(int fd, void *buf, unsigned int nbytes)
{
struct filelist *list;
int ret = EBADF;
/* Get the thread-specific file list */
list = sched_getfiles();
if (!list)
{
*get_errno_ptr() = EMFILE;
return ERROR;
}
/* Were we given a valid file descriptor? */
if ((unsigned int)fd < CONFIG_NFILE_DESCRIPTORS)
{
struct file *this_file = &list->fl_files[fd];
/* Was this file opened for read access? */
if ((this_file->f_oflags & O_RDOK) != 0)
{
struct inode *inode = this_file->f_inode;
/* Is a driver registered? Does it support the read method? */
if (inode && inode->i_ops && inode->i_ops->read)
{
/* Yes, then let it perform the read */
ret = (int)inode->i_ops->read(this_file, (char*)buf, (size_t)nbytes);
}
}
}
return ret;
}
#endif /* CONFIG_NFILE_DESCRIPTORS */

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/************************************************************
* fs_write.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
/************************************************************
* Compilation Switches
************************************************************/
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#if CONFIG_NFILE_DESCRIPTORS >0
#include <sys/types.h>
#include <stdio.h>
#include <sched.h>
#include <errno.h>
#include "fs_internal.h"
/************************************************************
* Global Functions
************************************************************/
int write(int fd, const void *buf, unsigned int nbytes)
{
struct filelist *list;
int ret = EBADF;
/* Get the thread-specific file list */
list = sched_getfiles();
if (!list)
{
*get_errno_ptr() = EMFILE;
return ERROR;
}
/* Did we get a valid file descriptor? */
if ((unsigned int)fd < CONFIG_NFILE_DESCRIPTORS)
{
struct file *this_file = &list->fl_files[fd];
/* Was this file opened for write access? */
if ((this_file->f_oflags & O_WROK) != 0)
{
struct inode *inode = this_file->f_inode;
/* Is a driver registered? Does it support the write method? */
if (inode && inode->i_ops && inode->i_ops->write)
{
/* Yes, then let it perform the write */
ret = inode->i_ops->write(this_file, buf, nbytes);
}
}
}
return ret;
}
#endif /* CONFIG_NFILE_DESCRIPTORS */

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/************************************************************
* assert.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __ASSERT_H
#define __ASSERT_H
/************************************************************
* Included Files
************************************************************/
#include <sys/types.h>
/************************************************************
* Definitions
************************************************************/
/* Macro Name: ASSERT, ASSERTCODE, et al. */
#undef ASSERT
#undef ASSERTFILE
#undef ASSERTCODE
#undef DEBUGASSERT
#define ASSERT(f) \
{ if (!(f)) up_assert((const ubyte *)__FILE__, (uint32)__LINE__); }
#define ASSERTCODE(f, errCode) \
{ if (!(f)) up_assert_code((const ubyte *)__FILE__, (uint32)__LINE__, errCode); }
#ifdef CONFIG_DEBUG
#define DEBUGASSERT(f) \
{ if (!(f)) up_assert((const ubyte *)__FILE__, (uint32)__LINE__); }
#else
#define DEBUGASSERT(f)
#endif /* CONFIG_DEBUG */
#define PANIC(errCode) \
up_assert_code((const ubyte *)__FILE__, (uint32)__LINE__, ((errCode)|(0x8000)))
/************************************************************
* Included Files
************************************************************/
/************************************************************
* Global Function Prototypes
************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
EXTERN void up_assert(const ubyte *fileName, uint32 lineNum);
EXTERN void up_assert_code(const ubyte *fileName, uint32 lineNum,
uint16 errorCode);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ASSERT_H */

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/************************************************************
* ctype.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __CTYPE_H
#define __CTYPE_H
/* There is no consistent ctype implementation, just a
* smattering of functions. Individually, they are okay, but
* a more standard, data lookup approach would make more sense
* if used extensively.
*/
/************************************************************
* Included Files
************************************************************/
#include <sys/types.h>
/************************************************************
* Public Type Definitions
************************************************************/
/************************************************************
* Function: isspace
*
* Description:
* Checks for white-space characters. In the "C" and "POSIX"
* locales, these are: space, form-feed ('\f'), newline ('\n'),
* carriage return ('\r'), horizontal tab ('\t'), and vertical
* tab ('\v').
*
************************************************************/
static inline int isspace(int c)
{
if (c == ' ' || c == '\t' || c == '\n' || \
c == '\r' || c == '\f' || c == '\v')
{
return TRUE;
}
else
{
return FALSE;
}
}
/************************************************************
* Function: isdigit
*
* Description:
* ANSI standard isdigit implementation.
*
************************************************************/
static inline int isdigit(int c)
{
return (c >= '0' && c <= '9');
}
/************************************************************
* Function: isascii
*
* Description:
* Checks whether c is a 7-bit unsigned char value that
* fits into the ASCII character set.
*
************************************************************/
static inline int isascii(int c)
{
return (c >= 0 && c <= 0177);
}
/************************************************************
* Function: isascii
*
* Description:
* isxdigit() checks for a hexadecimal digits, i.e. one of
* {0-9,a-f,A-F}
*
************************************************************/
static inline int isxdigit(int c)
{
if ((c >= '0' && c <= '9') ||
(c >= 'a' && c <= 'f') ||
(c >= 'A' && c <= 'F'))
{
return 1;
}
else
{
return 0;
}
}
/************************************************************
* Function: isascii
*
* Description:
* toupper() converts the letter c to upper case, if possible.
*
************************************************************/
static inline int toupper(int c)
{
if (c >= 'a' && c <= 'z')
{
return c - 'a' + 'A';
}
else
{
return c;
}
}
/************************************************************
* Function: isascii
*
* Description:
* tolower() converts the letter c to lower case, if possible.
*
************************************************************/
static inline int tolower(int c)
{
if (c >= 'A' && c <= 'Z')
{
return c - 'A' + 'a';
}
else
{
return c;
}
}
/************************************************************
* Public Functions
************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __CTYPE_H */

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/************************************************************
* debug.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __DEBUG_H
#define __DEBUG_H
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
/************************************************************
* Definitions
************************************************************/
/* Debug macros to runtime filter the opsys debug messages */
#ifdef CONFIG_DEBUG
# define dbg(format, arg...) lib_rawprintf(format, ##arg)
# ifdef CONFIG_ARCH_LOWPUTC
# define lldbg(format, arg...) lib_lowprintf(format, ##arg)
# else
# define lldbg(x...)
# endif
# ifdef CONFIG_DEBUG_VERBOSE
# define vdbg(format, arg...) lib_rawprintf(format, ##arg)
# else
# define vdbg(x...)
# endif
#else
# define dbg(x...)
# define lldbg(x...)
# define vdbg(x...)
#endif
/************************************************************
* Public Type Declarations
************************************************************/
/************************************************************
* Public Variables
************************************************************/
/************************************************************
* Public Function Prototypes
************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
EXTERN int lib_rawprintf(const char *format, ...);
#ifdef CONFIG_ARCH_LOWPUTC
EXTERN int lib_lowprintf(const char *format, ...);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __DEBUG_H */

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/************************************************************
* errno.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __ERRNO_H
#define __ERRNO_H
/************************************************************
* Included Files
************************************************************/
/************************************************************
* Definitions
************************************************************/
#define EPERM 1 /* Operation not permitted */
#define ENOENT 2 /* No such file or directory */
#define ESRCH 3 /* No such process */
#define EINTR 4 /* Interrupted system call */
#define EIO 5 /* I/O error */
#define ENXIO 6 /* No such device or address */
#define E2BIG 7 /* Arg list too long */
#define ENOEXEC 8 /* Exec format error */
#define EBADF 9 /* Bad file number */
#define ECHILD 10 /* No child processes */
#define EAGAIN 11 /* Try again */
#define ENOMEM 12 /* Out of memory */
#define EACCES 13 /* Permission denied */
#define EFAULT 14 /* Bad address */
#define ENOTBLK 15 /* Block device required */
#define EBUSY 16 /* Device or resource busy */
#define EEXIST 17 /* File exists */
#define EXDEV 18 /* Cross-device link */
#define ENODEV 19 /* No such device */
#define ENOTDIR 20 /* Not a directory */
#define EISDIR 21 /* Is a directory */
#define EINVAL 22 /* Invalid argument */
#define ENFILE 23 /* File table overflow */
#define EMFILE 24 /* Too many open files */
#define ENOTTY 25 /* Not a typewriter */
#define ETXTBSY 26 /* Text file busy */
#define EFBIG 27 /* File too large */
#define ENOSPC 28 /* No space left on device */
#define ESPIPE 29 /* Illegal seek */
#define EROFS 30 /* Read-only file system */
#define EMLINK 31 /* Too many links */
#define EPIPE 32 /* Broken pipe */
#define EDOM 33 /* Math argument out of domain of func */
#define ERANGE 34 /* Math result not representable */
#define EDEADLK 35 /* Resource deadlock would occur */
#define ENAMETOOLONG 36 /* File name too long */
#define ENOLCK 37 /* No record locks available */
#define ENOSYS 38 /* Function not implemented */
#define ENOTEMPTY 39 /* Directory not empty */
#define ELOOP 40 /* Too many symbolic links encountered */
#define EWOULDBLOCK EAGAIN /* Operation would block */
#define ENOMSG 42 /* No message of desired type */
#define EIDRM 43 /* Identifier removed */
#define ECHRNG 44 /* Channel number out of range */
#define EL2NSYNC 45 /* Level 2 not synchronized */
#define EL3HLT 46 /* Level 3 halted */
#define EL3RST 47 /* Level 3 reset */
#define ELNRNG 48 /* Link number out of range */
#define EUNATCH 49 /* Protocol driver not attached */
#define ENOCSI 50 /* No CSI structure available */
#define EL2HLT 51 /* Level 2 halted */
#define EBADE 52 /* Invalid exchange */
#define EBADR 53 /* Invalid request descriptor */
#define EXFULL 54 /* Exchange full */
#define ENOANO 55 /* No anode */
#define EBADRQC 56 /* Invalid request code */
#define EBADSLT 57 /* Invalid slot */
#define EDEADLOCK EDEADLK
#define EBFONT 59 /* Bad font file format */
#define ENOSTR 60 /* Device not a stream */
#define ENODATA 61 /* No data available */
#define ETIME 62 /* Timer expired */
#define ENOSR 63 /* Out of streams resources */
#define ENONET 64 /* Machine is not on the network */
#define ENOPKG 65 /* Package not installed */
#define EREMOTE 66 /* Object is remote */
#define ENOLINK 67 /* Link has been severed */
#define EADV 68 /* Advertise error */
#define ESRMNT 69 /* Srmount error */
#define ECOMM 70 /* Communication error on send */
#define EPROTO 71 /* Protocol error */
#define EMULTIHOP 72 /* Multihop attempted */
#define EDOTDOT 73 /* RFS specific error */
#define EBADMSG 74 /* Not a data message */
#define EOVERFLOW 75 /* Value too large for defined data type */
#define ENOTUNIQ 76 /* Name not unique on network */
#define EBADFD 77 /* File descriptor in bad state */
#define EREMCHG 78 /* Remote address changed */
#define ELIBACC 79 /* Can not access a needed shared library */
#define ELIBBAD 80 /* Accessing a corrupted shared library */
#define ELIBSCN 81 /* .lib section in a.out corrupted */
#define ELIBMAX 82 /* Attempting to link in too many shared libraries */
#define ELIBEXEC 83 /* Cannot exec a shared library directly */
#define EILSEQ 84 /* Illegal byte sequence */
#define ERESTART 85 /* Interrupted system call should be restarted */
#define ESTRPIPE 86 /* Streams pipe error */
#define EUSERS 87 /* Too many users */
#define ENOTSOCK 88 /* Socket operation on non-socket */
#define EDESTADDRREQ 89 /* Destination address required */
#define EMSGSIZE 90 /* Message too long */
#define EPROTOTYPE 91 /* Protocol wrong type for socket */
#define ENOPROTOOPT 92 /* Protocol not available */
#define EPROTONOSUPPORT 93 /* Protocol not supported */
#define ESOCKTNOSUPPORT 94 /* Socket type not supported */
#define EOPNOTSUPP 95 /* Operation not supported on transport endpoint */
#define EPFNOSUPPORT 96 /* Protocol family not supported */
#define EAFNOSUPPORT 97 /* Address family not supported by protocol */
#define EADDRINUSE 98 /* Address already in use */
#define EADDRNOTAVAIL 99 /* Cannot assign requested address */
#define ENETDOWN 100 /* Network is down */
#define ENETUNREACH 101 /* Network is unreachable */
#define ENETRESET 102 /* Network dropped connection because of reset */
#define ECONNABORTED 103 /* Software caused connection abort */
#define ECONNRESET 104 /* Connection reset by peer */
#define ENOBUFS 105 /* No buffer space available */
#define EISCONN 106 /* Transport endpoint is already connected */
#define ENOTCONN 107 /* Transport endpoint is not connected */
#define ESHUTDOWN 108 /* Cannot send after transport endpoint shutdown */
#define ETOOMANYREFS 109 /* Too many references: cannot splice */
#define ETIMEDOUT 110 /* Connection timed out */
#define ECONNREFUSED 111 /* Connection refused */
#define EHOSTDOWN 112 /* Host is down */
#define EHOSTUNREACH 113 /* No route to host */
#define EALREADY 114 /* Operation already in progress */
#define EINPROGRESS 115 /* Operation now in progress */
#define ESTALE 116 /* Stale NFS file handle */
#define EUCLEAN 117 /* Structure needs cleaning */
#define ENOTNAM 118 /* Not a XENIX named type file */
#define ENAVAIL 119 /* No XENIX semaphores available */
#define EISNAM 120 /* Is a named type file */
#define EREMOTEIO 121 /* Remote I/O error */
#define EDQUOT 122 /* Quota exceeded */
#define ENOMEDIUM 123 /* No medium found */
#define EMEDIUMTYPE 124 /* Wrong medium type */
/************************************************************
* Type Declarations
************************************************************/
/************************************************************
* Global Function Prototypes
************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
extern int *get_errno_ptr(void);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ERRNO_H */

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/************************************************************
* mqueue.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __MQUEUE_H
#define __MQUEUE_H
/************************************************************
* Included Files
************************************************************/
#include <sys/types.h>
#include <signal.h>
#include "queue.h"
/************************************************************
* Compilations Switches
************************************************************/
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Global Type Declarations
************************************************************/
/* Message queue attributes */
struct mq_attr
{
size_t mq_maxmsg; /* Max number of messages in queue */
size_t mq_msgsize; /* Max message size */
unsigned mq_flags; /* Queue flags */
size_t mq_curmsgs; /* Number of messages currently in queue */
};
/* The following is used to attach a signal to a message queue
* to notify a task when a message is available on a queue
*/
struct sigevent {
int sigev_signo;
union sigval sigev_value;
int sigev_notify;
};
/* Message queue descriptor */
typedef struct mq_des *mqd_t;
/************************************************************
* Global Variables
************************************************************/
/************************************************************
* Global Function Prototypes
************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
EXTERN mqd_t mq_open(const char *mq_name,
int oflags, ... );
EXTERN int mq_close(mqd_t mqdes );
EXTERN int mq_unlink(const char *mq_name );
EXTERN int mq_send(mqd_t mqdes, const void *msg,
size_t msglen, int prio );
EXTERN int mq_receive(mqd_t mqdes, void *msg,
size_t msglen, int *prio );
EXTERN int mq_notify(mqd_t mqdes,
const struct sigevent *notification );
EXTERN int mq_setattr(mqd_t mqdes,
const struct mq_attr *mq_stat,
struct mq_attr *oldstat);
EXTERN int mq_getattr(mqd_t mqdes,
struct mq_attr *mq_stat);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __MQUEUE_H */

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/************************************************************
* arch.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __ARCH_H
#define __ARCH_H
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <arch/arch.h>
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Inline functions
************************************************************/
/************************************************************
* Public Types
************************************************************/
/************************************************************
* Public Variables
************************************************************/
typedef void (*sig_deliver_t)(_TCB *tcb);
/************************************************************
* Public Function Prototypes
************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/************************************************************
* These are standard interfaces that must be exported to the
* scheduler from architecture-specific code.
************************************************************/
/************************************************************
* Name: up_initialize
*
* Description:
* up_initialize will be called once during OS
* initialization after the basic OS services have been
* initialized. The architecture specific details of
* initializing the OS will be handled here. Such things as
* setting up interrupt service routines, starting the
* clock, and registering device drivers are some of the
* things that are different for each processor and hardware
* platform.
*
* up_initialize is called after the OS initialized but
* before the init process has been started and before the
* libraries have been initialized. OS services and driver
* services are available.
*
************************************************************/
EXTERN void up_initialize(void);
/************************************************************
* Name: up_idle
*
* Description:
* up_idle() is the logic that will be executed
* when their is no other ready-to-run task. This is processor
* idle time and will continue until some interrupt occurs to
* cause a context switch from the idle task.
*
* Processing in this state may be processor-specific. e.g.,
* this is where power management operations might be performed.
*
************************************************************/
EXTERN void up_idle(void);
/************************************************************
* Name: up_initial_state
*
* Description:
* A new thread is being started and a new TCB
* has been created. This function is called to initialize
* the processor specific portions of the new TCB.
*
* This function must setup the intial architecture registers
* and/or stack so that execution will begin at tcb->start
* on the next context switch.
*
************************************************************/
EXTERN void up_initial_state(_TCB *tcb);
/************************************************************
* Name: up_create_stack
*
* Description:
* Allocate a stack for a new thread and setup
* up stack-related information in the TCB.
*
* The following TCB fields must be initialized:
* adj_stack_size: Stack size after adjustment for hardware,
* processor, etc. This value is retained only for debug
* purposes.
* stack_alloc_ptr: Pointer to allocated stack
* adj_stack_ptr: Adjusted StatckAllocPtr for HW. The
* initial value of the stack pointer.
*
* Inputs:
* tcb: The TCB of new task
* stack_size: The requested stack size. At least this much
* must be allocated.
************************************************************/
EXTERN STATUS up_create_stack(_TCB *tcb, uint32 stack_size);
/************************************************************
* Name: up_use_stack
*
* Description:
* Setup up stack-related information in the TCB
* using pre-allocated stack memory
*
* The following TCB fields must be initialized:
* adj_stack_size: Stack size after adjustment for hardware,
* processor, etc. This value is retained only for debug
* purposes.
* stack_alloc_ptr: Pointer to allocated stack
* adj_stack_ptr: Adjusted StatckAllocPtr for HW. The
* initial value of the stack pointer.
*
* Inputs:
* tcb: The TCB of new task
* stack_size: The allocated stack size.
*
************************************************************/
EXTERN STATUS up_use_stack(_TCB *tcb, uint32 *stack, uint32 stack_size);
/************************************************************
* Name: up_release_stack
*
* Description:
* A task has been stopped. Free all stack
* related resources retained int the defunct TCB.
*
************************************************************/
EXTERN void up_release_stack(_TCB *dtcb);
/************************************************************
* Name: up_unblock_task
*
* Description:
* A task is currently in an inactive task list
* but has been prepped to execute. Move the TCB to the
* ready-to-run list, restore its context, and start execution.
*
* Inputs:
* tcb: Refers to the tcb to be unblocked. This tcb is
* in one of the waiting tasks lists. It must be moved to
* the ready-to-run list and, if it is the highest priority
* ready to run taks, executed.
*
************************************************************/
EXTERN void up_unblock_task(_TCB *tcb);
/************************************************************
* Name: up_block_task
*
* Description:
* The currently executing task at the head of
* the ready to run list must be stopped. Save its context
* and move it to the inactive list specified by task_state.
*
* Inputs:
* tcb: Refers to a task in the ready-to-run list (normally
* the task at the the head of the list). It most be
* stopped, its context saved and moved into one of the
* waiting task lists. It it was the task at the head
* of the ready-to-run list, then a context to the new
* ready to run task must be performed.
* task_state: Specifies which waiting task list should be
* hold the blocked task TCB.
*
************************************************************/
EXTERN void up_block_task(_TCB *tcb, tstate_t task_state);
/************************************************************
* Name: up_release_pending
*
* Description:
* Release and ready-to-run tasks that have
* collected in the pending task list. This can call a
* context switch if a new task is placed at the head of
* the ready to run list.
*
************************************************************/
EXTERN void up_release_pending(void);
/************************************************************
* Name: up_reprioritize_rtr
*
* Description:
* Called when the priority of a running or
* ready-to-run task changes and the reprioritization will
* cause a context switch. Two cases:
*
* 1) The priority of the currently running task drops and the next
* task in the ready to run list has priority.
* 2) An idle, ready to run task's priority has been raised above the
* the priority of the current, running task and it now has the
* priority.
*
* Inputs:
* tcb: The TCB of the task that has been reprioritized
* priority: The new task priority
*
************************************************************/
EXTERN void up_reprioritize_rtr(_TCB *tcb, ubyte priority);
/************************************************************
* Name: _exit
*
* Description:
* This function causes the currently executing task to cease
* to exist. This is a special case of task_delete().
*
************************************************************/
/* Prototype is in unistd.h */
/************************************************************
* Name: ip_assert and up_assert_code
*
* Description:
* Assertions may be handled in an architecture-specific
* way.
*
************************************************************/
/* Prototype is in assert.h */
/************************************************************
* Name: up_schedule_sigaction
*
* Description:
* This function is called by the OS when one or more
* signal handling actions have been queued for execution.
* The architecture specific code must configure things so
* that the 'igdeliver' callback is executed on the thread
* specified by 'tcb' as soon as possible.
*
* This function may be called from interrupt handling logic.
*
* This operation should not cause the task to be unblocked
* nor should it cause any immediate execution of sigdeliver.
* Typically, a few cases need to be considered:
*
* (1) This function may be called from an interrupt handler
* During interrupt processing, all xcptcontext structures
* should be valid for all tasks. That structure should
* be modified to invoke sigdeliver() either on return
* from (this) interrupt or on some subsequent context
* switch to the recipient task.
* (2) If not in an interrupt handler and the tcb is NOT
* the currently executing task, then again just modify
* the saved xcptcontext structure for the recipient
* task so it will invoke sigdeliver when that task is
* later resumed.
* (3) If not in an interrupt handler and the tcb IS the
* currently executing task -- just call the signal
* handler now.
*
************************************************************/
EXTERN void up_schedule_sigaction(_TCB *tcb, sig_deliver_t sigdeliver);
/************************************************************
* Name: up_allocate_heap
*
* Description:
* The heap may be statically allocated by
* defining CONFIG_HEAP_BASE and CONFIG_HEAP_SIZE. If these
* are not defined, then this function will be called to
* dynamically set aside the heap region.
*
************************************************************/
#ifndef CONFIG_HEAP_BASE
EXTERN void up_allocate_heap(void **heap_start, size_t *heap_size);
#endif
/************************************************************
* Name: up_interrupt_context
*
* Description:
* Return TRUE is we are currently executing in
* the interrupt handler context.
*
************************************************************/
EXTERN boolean up_interrupt_context(void);
/************************************************************
* Name: up_disable_irq
*
* Description:
* Disable the IRQ specified by 'irq'
*
************************************************************/
EXTERN void up_disable_irq(int irq);
/************************************************************
* Name: up_enable_irq
*
* Description:
* Enable the IRQ specified by 'irq'
*
************************************************************/
EXTERN void up_enable_irq(int irq);
/************************************************************
* Name: up_acknowledge_irq
*
* Description:
* Disable the IRQ specified by 'irq'
*
************************************************************/
EXTERN void up_disable_irq(int irq);
/************************************************************
* These are standard interfaces that are exported by the OS
* for use by the architecture specific logic
************************************************************/
/************************************************************
* Name: sched_process_timer
*
* Description:
* This function handles system timer events.
* The timer interrupt logic itself is implemented in the
* architecture specific code, but must call the following OS
* function periodically -- the calling interval must be
* MSEC_PER_TICK.
*
************************************************************/
EXTERN void sched_process_timer(void);
/************************************************************
* Name: irq_dispatch
*
* Description:
* This function must be called from the achitecture-
* specific logic in order to dispaly an interrupt to
* the appropriate, registered handling logic.
*
***********************************************************/
EXTERN void irq_dispatch(int irq, struct xcptcontext *xcp);
/************************************************************
* Debug interfaces exported by the architecture-specific
* logic
************************************************************/
/************************************************************
* Name: up_putc
*
* Description:
* Output one character on the console
*
************************************************************/
# ifdef CONFIG_ARCH_LOWPUTC
EXTERN int up_putc(int ch);
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ARCH_H */

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/************************************************************
* compiler.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __COMPILER_H
#define __COMPILER_H
/************************************************************
* Included Files
************************************************************/
/************************************************************
* Definitions
************************************************************/
#define weak_alias(name, aliasname) \
extern __typeof (name) aliasname __attribute__ ((weak, alias (#name)));
#define weak_function __attribute__ ((weak))
#define weak_const_function __attribute__ ((weak, __const__))
/************************************************************
* Global Function Prototypes
************************************************************/
/************************************************************
* Global Function Prototypes
************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __COMPILER_H */

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/************************************************************
* fs.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __FS_H
#define __FS_H
/************************************************************
* Included Files
************************************************************/
#include <sys/types.h>
#include <semaphore.h>
#include <nuttx/compiler.h>
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Type Definitions
************************************************************/
/* This structure is provided by filesystems when they are
* registered with the system. It is used to call back to
* perform fs/device specific operations.
*/
struct file;
struct file_operations
{
int (*open)(struct file *);
int (*close)(struct file *);
// off_t (*llseek)(struct file *, off_t, int);
ssize_t (*read)(struct file *, char *, size_t);
ssize_t (*write)(struct file *, const char *, size_t);
// unsigned int (*poll)(struct file *, struct poll_table_struct *);
int (*ioctl)(struct file *, int, unsigned long);
};
/* This structure represents one inode in the Nuttx psuedo-file system */
struct inode
{
struct inode *i_peer; /* Pointer to inode at same level */
struct inode *i_child; /* Pointer to inode at lower level */
struct file_operations *i_ops; /* Driver file operations for inode */
sint16 i_crefs; /* References to inode */
uint16 i_flags; /* flags for inode */
#ifdef CONFIG_FILE_MODE
mode_t i_mode; /* Access mode flags */
#endif
void *i_private; /* Driver private data */
char i_name[1]; /* Name of inode (variable length) */
};
#define FSNODE_SIZE(n) (sizeof(struct inode) + (n))
/* This is the underlying representation of a ropen file.
* A file descriptor is an index into an array of such types.
* The type associates the file descriptor to the file state
* and to a set of inode operations.
*/
struct file
{
int f_oflags; /* Open mode flags */
off_t f_pos; /* File position */
struct inode *f_inode; /* Driver interface */
};
/* This defines a list of files indexed by the file descriptor */
#if CONFIG_NFILE_DESCRIPTORS > 0
struct filelist
{
sem_t fl_sem; /* Manage access to the file list */
sint16 fl_crefs; /* Reference count */
struct file fl_files[CONFIG_NFILE_DESCRIPTORS];
};
#endif
/* This defines the list of files used for standard C I/O
* We can support the standard C APIs without or without buffering
*/
/* Buffered file I/O structure */
#if CONFIG_NFILE_STREAMS > 0
struct file_struct
{
int fs_filedes; /* File descriptor associated with stream */
mode_t fs_oflags; /* Open mode flags */
#if CONFIG_NUNGET_CHARS > 0
uint8 fs_nungotten; /* The number of characters buffered for ungetc */
unsigned char fs_ungotten[CONFIG_NUNGET_CHARS];
#endif
#if CONFIG_STDIO_BUFFER_SIZE > 0
sem_t fs_sem; /* For thread safety */
pid_t fs_holder; /* Holder of sem */
int fs_counts; /* Number of times sem is held */
unsigned char *fs_bufstart; /* Pointer to start of buffer */
unsigned char *fs_bufend; /* Pointer to 1 past end of buffer */
unsigned char *fs_bufpos; /* Current position in buffer */
unsigned char *fs_bufread; /* Pointer to 1 past last buffered read char. */
#endif
};
struct streamlist
{
int sl_crefs; /* Reference count */
sem_t sl_sem; /* For thread safety */
struct file_struct sl_streams[CONFIG_NFILE_STREAMS];
};
#endif /* CONFIG_NFILE_STREAMS */
/************************************************************
* Global Function Prototypes
************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/* fs_inode.c ***********************************************/
/* These interfaces are used by drivers to register their
* inodes in the inode tree.
*/
EXTERN void weak_function fs_initialize(void);
EXTERN STATUS register_inode(const char *path,
struct file_operations *fops,
mode_t mode, void *private);
EXTERN STATUS unregister_inode(const char *path);
/* fs_open.c ************************************************/
EXTERN int inode_checkflags(struct inode *inode, int oflags);
/* fs_files.c ***********************************************/
#if CONFIG_NFILE_DESCRIPTORS >0
EXTERN struct filelist *files_alloclist(void);
EXTERN int files_addreflist(struct filelist *list);
EXTERN int files_releaselist(struct filelist *list);
EXTERN int files_dup(struct file *filep1, struct file *filep2);
#endif
/* lib_fopen.c **********************************************/
/* Used by the OS to clone stdin, stdout, stderr */
#if CONFIG_NFILE_STREAMS > 0
EXTERN struct file_struct *lib_fdopen(int fd,
const char *mode,
struct filelist *flist,
struct streamlist *slist);
#endif
/* lib_fflush.c *********************************************/
#if CONFIG_NFILE_STREAMS > 0
EXTERN void lib_flushall(struct streamlist *list);
#endif
/* drivers **************************************************/
/* Call in of these to register the corresponding default
* default drivers in the drivers/ subdirectory
*/
EXTERN void devnull_register(void);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __FS_H */

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include/nuttx/irq.h Normal file
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/************************************************************
* irq.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __IRQ_H
#define __IRQ_H
/************************************************************
* Included Files
************************************************************/
#ifndef __ASSEMBLY__
# include <sys/types.h>
# include <assert.h>
#endif
/************************************************************
* Definitions
************************************************************/
#ifndef __ASSEMBLY__
# define irq_detach(isr) irq_attach(isr, NULL)
#endif
/************************************************************
* Public Types
************************************************************/
/* This struct defines the way the registers are stored */
#ifndef __ASSEMBLY__
struct xcptcontext; /* forward reference */
typedef int (*xcpt_t)(int irq, struct xcptcontext *xcp);
typedef int (*swint_t)(uint32 code, uint32 parm2, uint32 parm3,
struct xcptcontext *xcp);
#endif
/* Now include architecture-specific types */
#include <arch/irq.h>
/************************************************************
* Inline functions
************************************************************/
/************************************************************
* Public Variables
************************************************************/
#ifndef __ASSEMBLY__
struct xcptcontext *current_xcp;
#endif
/************************************************************
* Public Function Prototypes
************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
EXTERN int irq_attach(int irq, xcpt_t isr);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif /* __IRQ_H */

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/************************************************************
* kmalloc.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __KMALLOC_H
#define __KMALLOC_H
/************************************************************
* Included Functions
************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
/************************************************************
* Public Types
************************************************************/
/************************************************************
* Pulblic Function Prototypes
************************************************************/
#undef KMALLOC_EXTERN
#if defined(__cplusplus)
# define KMALLOC_EXTERN extern "C"
extern "C" {
#else
# define KMALLOC_EXTERN extern
#endif
#ifndef CONFIG_ARCH_KMALLOC
# include <stdlib.h>
# define kmalloc(s) malloc(s)
#else
KMALLOC_EXTERN void *kmalloc(size_t);
#endif
#ifndef CONFIG_ARCH_KZMALLOC
# include <stdlib.h>
# define kzmalloc(s) zalloc(s)
#else
KMALLOC_EXTERN void *kzalloc(size_t);
#endif
#ifndef CONFIG_ARCH_KFREE
# include <stdlib.h>
# define kfree(p) free(p)
#else
KMALLOC_EXTERN void kfree(void*);
#endif
/* Functions defined in os_list.c ***************************/
/* Handles memory freed from an interrupt handler */
KMALLOC_EXTERN void sched_free(void *address);
#undef KMALLOC_EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __KMALLOC_H */

79
include/nuttx/lib.h Normal file
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/************************************************************
* lib.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __LIB_H
#define __LIB_H
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <nuttx/fs.h>
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Global Function Prototypes
************************************************************/
/************************************************************
* Global Function Prototypes
************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/* Functions contained in lib_init.c ************************/
EXTERN void weak_function lib_initialize(void);
#if CONFIG_NFILE_STREAMS > 0
EXTERN struct streamlist *lib_alloclist(void);
EXTERN void lib_addreflist(struct streamlist *list);
EXTERN void lib_releaselist(struct streamlist *list);
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __LIB_H */

85
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/************************************************************
* os_external.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
#ifndef __OS_EXTERNAL_H
#define __OS_EXTERNAL_H
/************************************************************
* Included Files
************************************************************/
#include <nuttx/config.h>
#include <pthread.h>
#include <sched.h>
#include <nuttx/compiler.h>
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Global Function Prototypes
************************************************************/
/************************************************************
* Global Function Prototypes
************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/* These are functions that must be supplied by the application */
EXTERN void weak_function user_initialize(void);
EXTERN int user_start(int parm1, int parm2, int parm3, int parm4);
/* Functions contained in os_task.c *************************/
EXTERN void os_start(void); /* OS entry point called by boot logic */
/* Functions contained in mm_init.c *************************/
EXTERN void mm_initialize(void *heap_start, size_t heap_size);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __OS_EXTERNAL_H */

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