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Merge branch 'bugfix/add_exception_emergency_pool_again_4.3' into 'release/v4.3'

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[esp_system]: added __cxx_eh_arena_size_get again (backport 4.3)

See merge request espressif/esp-idf!14132
This commit is contained in:
Ivan Grokhotkov 2021-06-30 07:30:39 +00:00
commit c836cef1a5
1 changed files with 15 additions and 0 deletions
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15
components/esp_system/startup.c
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@ -135,6 +135,21 @@ static IRAM_ATTR void _Unwind_SetNoFunctionContextInstall_Default(unsigned char
static const char* TAG = "cpu_start";
/**
* This function overwrites a the same function of libsupc++ (part of libstdc++).
* Consequently, libsupc++ will then follow our configured exception emergency pool size.
*
* It will be called even with -fno-exception for user code since the stdlib still uses exceptions.
*/
size_t __cxx_eh_arena_size_get(void)
{
#ifdef CONFIG_COMPILER_CXX_EXCEPTIONS
return CONFIG_COMPILER_CXX_EXCEPTIONS_EMG_POOL_SIZE;
#else
return 0;
#endif
}
/**
* Xtensa gcc is configured to emit a .ctors section, RISC-V gcc is configured with --enable-initfini-array
* so it emits an .init_array section instead.