[libc][cpp] 增加 cxx_crt_init.c 函数注释 (#7535)
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@ -34,6 +34,18 @@ rt_weak void *__dso_handle = 0;
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#endif
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/**
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* @brief This function initializes the C++ runtime environment for ARM and GCC compilers.
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*
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* @note If there is no SHT$$INIT_ARRAY section, calling $Super$$__cpp_initialize__aeabi_() will cause an error
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* in ARMCC compiler. Therefore, this function manually iterates through the base addresses of the
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* SHT$$INIT_ARRAY section to call the constructor functions of each object. In GCC compiler, this function
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* uses the __ctors_start__ and __ctors_end__ global variables to determine the range of constructor function
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* pointers and calls each constructor function of every object in that range.
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*
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* @return Returns 0 if the initialization of the C++ runtime environment is successful. Otherwise, it returns
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* an error code indicating the failure of the operation.
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*/
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rt_weak int cplusplus_system_init(void)
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{
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#if defined(__ARMCC_VERSION)
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