1. Excerpted from: https://github.com/ARM-software/LLVM-embedded-toolchain-for-Arm/blob/main/samples/src/cpp-baremetal-semihosting-prof/proflib.c
2. Since llvm profile supports more than just gcov, and some features have not yet been explored, two clang gcov implementations are supported after this patch
3. Using this lib only supports the gcov compilation options of "-fprofile-instr-generate -fcoverage-mapping"
4. This file is heavily dependent on the compiler clang version, and is currently aligned with ci, supporting 17.0.1 and below. 18 and above are not supported by this library due to different internal implementations of the compiler
Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>
1. bin and kbin folders are dynamically generated
2. Context comes before depend, so the bin and kbin folders are created in the context construction phase. When the depend process comes, each library is downloaded, and a relative bin/xxx and kbin/xxx directory is created for each library to place files. This is to prevent duplicate file names.
Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>
1. enable CONFIG_BUILTIN_COMPILER_RT to built libclang_rt.builtins-xxx.a and no longer use the compiler's built-in
2. Modify clang version acquisition to get two decimal points
3. It has been ported to support four architectures: ARM, ARM64, RISCV, and x86_64, among which ARM has been validated
Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>
