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crt_init: fix hardfault in Keil toolchain when there is no cpp object

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If there is no SHT$$INIT_ARRAY, calling
$Super$$__cpp_initialize__aeabi_() will fault. At least until Keil5.12
the problem still exists. So we have to initialize the C++ runtime our
own.
This commit is contained in:
Grissiom 2015-01-22 17:22:01 +08:00
parent 2475568190
commit 01ab0c1d1e
1 changed files with 18 additions and 0 deletions
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18
components/cplusplus/crt_init.c
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@ -51,8 +51,26 @@ int cplusplus_system_init(void)
(*ctors_func)(); (*ctors_func)();
} }
#elif defined(__CC_ARM) #elif defined(__CC_ARM)
# if 1
/* If there is no SHT$$INIT_ARRAY, calling
* $Super$$__cpp_initialize__aeabi_() will fault. At least until Keil5.12
* the problem still exists. So we have to initialize the C++ runtime our
* own. */
typedef void PROC();
extern const unsigned long SHT$$INIT_ARRAY$$Base[];
extern const unsigned long SHT$$INIT_ARRAY$$Limit[];
const unsigned long *base = SHT$$INIT_ARRAY$$Base;
const unsigned long *lim = SHT$$INIT_ARRAY$$Limit;
for (; base != lim; base++)
{
PROC *proc = (PROC*)((const char*)base + *base);
(*proc)();
}
# else
/* call armcc lib to initialize cplusplus */ /* call armcc lib to initialize cplusplus */
$Super$$__cpp_initialize__aeabi_(); $Super$$__cpp_initialize__aeabi_();
# endif
#endif #endif
return 0; return 0;