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[C++] Add WEAK for cplusplus_system_init routine.

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bernard 2017-01-31 13:16:01 +08:00
parent 924fc4fa88
commit 876a9148e7
1 changed files with 8 additions and 11 deletions
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19
components/cplusplus/crt_init.c
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@ -22,6 +22,7 @@
* 2014-12-03 Bernard Add copyright header. * 2014-12-03 Bernard Add copyright header.
* 2014-12-29 Bernard Add cplusplus initialization for ARMCC. * 2014-12-29 Bernard Add cplusplus initialization for ARMCC.
* 2016-06-28 Bernard Add _init/_fini routines for GCC. * 2016-06-28 Bernard Add _init/_fini routines for GCC.
* 2016-10-02 Bernard Add WEAK for cplusplus_system_init routine.
*/ */
#include <rtthread.h> #include <rtthread.h>
@ -44,22 +45,18 @@ void _fini()
} }
#endif #endif
WEAK
int cplusplus_system_init(void) int cplusplus_system_init(void)
{ {
#if defined(__GNUC__) && !defined(__CC_ARM) #if defined(__GNUC__) && !defined(__CC_ARM)
extern unsigned char __ctors_start__; typedef void (*pfunc) ();
extern unsigned char __ctors_end__; extern pfunc __ctors_start__[];
typedef void (*func)(void); extern pfunc __ctors_end__[];
pfunc *p;
/* .ctors initalization */ for (p = __ctors_start__; p < __ctors_end__; p++)
func *ctors_func; (*p)();
for (ctors_func = (func *)&__ctors_start__;
ctors_func < (func *)&__ctors_end__;
ctors_func ++)
{
(*ctors_func)();
}
#elif defined(__CC_ARM) #elif defined(__CC_ARM)
/* If there is no SHT$$INIT_ARRAY, calling /* If there is no SHT$$INIT_ARRAY, calling
* $Super$$__cpp_initialize__aeabi_() will cause fault. At least until Keil5.12 * $Super$$__cpp_initialize__aeabi_() will cause fault. At least until Keil5.12