forked from nuttx/nuttx-update
0413d74f31
In devices without storage media, you can export data to the command line and then generate the corresponding gcda file It can save the result output by calling __gcov_info_to_gcda The usage is similar to: https://gcc.gnu.org/onlinedocs/gcc/Freestanding-Environments.html#Profiling-and-Test-Coverage-in-Freestanding-Environments Usage: ./tools/configure.sh qemu-armv7a:nsh Modify the configuration +CONFIG_COVERAGE_ALL=y +CONFIG_COVERAGE_MINI=y +CONFIG_SYSTEM_GCOV=y Run: qemu-system-arm -cpu cortex-a7 -nographic -smp 4 \ -machine virt,virtualization=off,gic-version=2 \ -net none -chardev stdio,id=con,mux=on -serial chardev:con \ -mon chardev=con,mode=readline -kernel ./nuttx/nuttx -semihosting -s | tee gcov.txt ./nuttx/tools/gcov_convert.py -i ./gcov.txt ./nuttx/tools/gcov.sh -t arm-none-eabi-gcov Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
94 lines
3.2 KiB
Python
Executable file
94 lines
3.2 KiB
Python
Executable file
#!/usr/bin/env python3
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############################################################################
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# tools/gcov_convert.py
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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############################################################################
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import argparse
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import re
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# Parse gcda data from stdout dump format to binary format
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# The stdout dump format is:
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# gcov start filename:<filename> size: <size>Byte
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# <hex dump data>
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# gcov end filename:<filename> checksum: <checksum>
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#
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# The hex dump data will be converted to binary and written to <filename>
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# The checksum is calculated by summing all bytes and taking modulo 65536
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def parse_gcda_data(input_file):
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with open(input_file, "r") as file:
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lines = file.read().strip().splitlines()
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for line in lines:
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if not line.startswith("gcov start"):
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continue
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match = re.search(r"filename:(.*?)\s+size:\s*(\d+)Byte", line)
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if not match:
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continue
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hex_dump = ""
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filename = match.group(1)
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size = int(match.group(2))
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# Read the hex dump until the end of the file
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next_line_index = lines.index(line) + 1
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while next_line_index < len(lines) and not lines[next_line_index].startswith(
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"gcov end"
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):
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hex_dump += lines[next_line_index].strip()
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next_line_index += 1
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if size != len(hex_dump) // 2:
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print(
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f"Size mismatch for {filename}: expected {size} bytes, got {len(hex_dump) // 2} bytes"
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)
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checksum_match = (
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re.search(r"checksum:\s*(0x[0-9a-fA-F]+)", lines[next_line_index])
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if next_line_index < len(lines)
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else None
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)
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if not checksum_match:
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continue
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checksum = int(checksum_match.group(1), 16)
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calculated_checksum = sum(bytearray.fromhex(hex_dump)) % 65536
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if calculated_checksum != checksum:
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print(
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f"Checksum mismatch for {filename}: expected {checksum}, got {calculated_checksum}"
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)
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continue
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with open(filename, "wb") as fp:
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fp.write(bytes.fromhex(hex_dump))
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print(f"write {filename} success")
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print(
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"Execute the 'nuttx/tools/gcov.sh -t arm-none-eabi-gcov' command to view the coverage report"
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)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser()
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parser.add_argument("-i", "--input", required=True, help="Input dump data")
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args = parser.parse_args()
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parse_gcda_data(args.input)
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