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(a): When compiling with GCC on ia64, use "asm" statement to get the address of the

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label.  gcc-3.x otherwise notices that the label isn't used for control-flow
	and feels free to move it around (usually to the beginning of the basic-block),
	with very bad consequences.

(Logical change 1.70)
This commit is contained in:
mostang.com!davidm 2003-03-28 07:43:22 +00:00
parent 453ec65cf0
commit 757746aefb
1 changed files with 11 additions and 3 deletions
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14
tests/Gtest-exc.c
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@ -95,15 +95,23 @@ a (void)
long stack; long stack;
#ifdef __GNUC__ #ifdef __GNUC__
void *label;
if (verbose) if (verbose)
printf ("a: sp=%p bsp=%p\n", &stack, __builtin_ia64_bsp ()); printf ("a: sp=%p bsp=%p\n", &stack, __builtin_ia64_bsp ());
b (&&handler); #ifdef UNW_TARGET_IA64
asm ("movl %0=Label" : "=r"(label));
#else
label = &&handler;
#endif
b (label);
panic ("FAILURE: unexpected return from func()!\n"); panic ("FAILURE: unexpected return from func()!\n");
#if UNW_TARGET_IA64 #if UNW_TARGET_IA64
asm volatile ("1:"); /* force a new bundle */ asm volatile ("Label:"); /* force a new bundle */
#else
handler:
#endif #endif
handler:
if (verbose) if (verbose)
{ {
printf ("exception handler: here we go (sp=%p, bsp=%p)...\n", printf ("exception handler: here we go (sp=%p, bsp=%p)...\n",