ghost
commented
3 years ago Hello @flit,
the problem is that the used version of GCC gcc version 10.2.1 20201103 (release) (GNU Arm Embedded Toolchain 10-2020-q4-major) does not generate the predefined macro __ARM_ARCH_8_1M_MAIN__ for ARM-v8.1-M cores. GCC only generates __ARM_ARCH_8M_MAIN__.
As soon as GCC generates __ARM_ARCH_8_1M_MAIN__ it will be added.
To check the predefined macros I use the following batch file:
SET GCC="C:\_Tools\gcc-arm-none-eabi-10-2020-q4-major\bin\arm-none-eabi-gcc.exe"
%GCC% -mthumb -march=armv6-m -dM -E -x c _x.c > _macro_armv6-m.txt
%GCC% -mthumb -march=armv7-m -dM -E -x c _x.c > _macro_armv7-m.txt
%GCC% -mthumb -march=armv7e-m -dM -E -x c _x.c > _macro_armv7e-m.txt
%GCC% -mthumb -march=armv8-m.main -dM -E -x c _x.c > _macro_armv8-m_main.txt
%GCC% -mthumb -march=armv8-m.main+dsp -dM -E -x c _x.c > _macro_armv8-m_main_dsp.txt
%GCC% -mthumb -march=armv8-m.base -dM -E -x c _x.c > _macro_armv8-m_base.txt
%GCC% -mthumb -march=armv8.1-m.main -dM -E -x c _x.c > _macro_armv81-m_main.txt
%GCC% -mthumb -march=armv8.1-m.main+dsp -dM -E -x c _x.c > _macro_armv81-m_main_dsp.txt
%GCC% -mthumb -mcpu=cortex-m0 -dM -E -x c _x.c > _macro_cortex-m0.txt
%GCC% -mthumb -mcpu=cortex-m0plus -dM -E -x c _x.c > _macro_cortex-m0plus.txt
%GCC% -mthumb -mcpu=cortex-m3 -dM -E -x c _x.c > _macro_cortex-m3.txt
%GCC% -mthumb -mcpu=cortex-m4 -dM -E -x c _x.c > _macro_cortex-m4.txt
%GCC% -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -dM -E -x c _x.c > _macro_cortex-m4f.txt
%GCC% -mthumb -mcpu=cortex-m7 -dM -E -x c _x.c > _macro_cortex-m7.txt
%GCC% -mthumb -mcpu=cortex-m23 -dM -E -x c _x.c > _macro_cortex-m23.txt
%GCC% -mthumb -mcpu=cortex-m33 -dM -E -x c _x.c > _macro_cortex-m33.txt
%GCC% -mthumb -mcpu=cortex-m35p -dM -E -x c _x.c > _macro_cortex-m35p.txt
%GCC% -mthumb -mcpu=cortex-m55 -dM -E -x c _x.c > _macro_cortex-m55.txt
%GCC% -mthumb -mcpu=cortex-m55 -mfloat-abi=hard -dM -E -x c _x.c > _macro_cortex-m55_fp.txt
flit
renesas-kyle-finch
JonatanAntoni
The
cmsis_gcc.hheader is missing the__ARM_ARCH_8_1M_MAIN__macro in in multiple ifdefs that include certain intrinsics by architecture version.Example: https://github.com/ARM-software/CMSIS_5/blob/4ed9008313cda609d698589fb72c4c979536ccf6/CMSIS/Core/Include/cmsis_gcc.h#L518-L520
Similar ifdef from
cmsis_armclang.hfor comparison: https://github.com/ARM-software/CMSIS_5/blob/4ed9008313cda609d698589fb72c4c979536ccf6/CMSIS/Core/Include/cmsis_armclang.h#L468-L471These are all the instances of the ifdefs in
cmsis_gcc.hthat test__ARM_ARCH_8M_MAIN__and are therefore likely need fixing:I have not checked for missing v8.1-M intrinsics. (That would be a separate ticket, anyway.)