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x86_64: Implement GET_CALLER_FP

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TCC always uses %rbp frames, so we can use that one.
This commit is contained in:
Michael Matz 2012-04-16 00:39:24 +02:00
parent 4c0d70ab07
commit b068e29df7
1 changed files with 8 additions and 0 deletions
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8
lib/bcheck.c
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@ -216,6 +216,14 @@ BOUND_PTR_INDIR(16)
__asm__ __volatile__ ("movl %%ebp,%0" :"=g" (fp1));\
fp = fp1[0];\
}
#elif defined(__x86_64__)
/* TCC always creates %rbp frames also on x86_64, so use them. */
#define GET_CALLER_FP(fp)\
{\
unsigned long *fp1;\
__asm__ __volatile__ ("movq %%rbp,%0" :"=g" (fp1));\
fp = fp1[0];\
}
#else
#error put code to extract the calling frame pointer
#endif