Viewing file:  frame-addr1.c (1.25 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* builtin_frame_address(n) with n>0 has always been troublesome ...
especially when the S/390 packed stack layout comes into play. */
/* { dg-do run } */
/* { dg-options "-O3 -fno-optimize-sibling-calls -mbackchain -mpacked-stack -msoft-float" } */
#ifdef __s390x__
/* 64bit: 3 words to be saved: backchain, r14 and r15 */
#define SAVE_AREA_SIZE 3*8
#else
/* 32bit: 4 words to be saved: backchain, r13, r14 and r15 */
#define SAVE_AREA_SIZE 4*4
#endif
extern void abort(void);
#define EXPAND_CHECK(n) \
void __attribute__((noinline)) \
foo1_##n (void *p) \
{ \
if (p - __builtin_frame_address (n) != SAVE_AREA_SIZE) \
abort (); \
} \
void __attribute__((noinline)) \
foo2_##n (void *p) \
{ \
if (p - __builtin_frame_address (n) != SAVE_AREA_SIZE) \
abort (); \
foo1_##n (__builtin_frame_address (n)); \
} \
void __attribute__((noinline)) \
foo3_##n () \
{ \
foo2_##n (__builtin_frame_address (n)); \
} \
void __attribute__((noinline)) \
foo4_##n () \
{ \
foo3_##n (); \
}
EXPAND_CHECK (0)
EXPAND_CHECK (1)
EXPAND_CHECK (2)
int
main ()
{
foo4_0 ();
foo4_1 ();
foo4_2 ();
return 0;
}
|
