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(setjmp): Use macros from jmpbuf.h instead of hardcoded values.

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(Logical change 1.259)
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hp.com!davidm 2004-08-31 13:59:10 +00:00
parent 8f2272c097
commit 14abd25ff5
1 changed files with 5 additions and 8 deletions
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13
src/setjmp.c
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@ -1,5 +1,5 @@
/* libunwind - a platform-independent unwind library
Copyright (C) 2003 Hewlett-Packard Co
Copyright (C) 2003-2004 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
@ -26,6 +26,8 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include <libunwind.h>
#include <setjmp.h>
#include "jmpbuf.h"
/* Why use K&R syntax here? setjmp() is often a macro and that
expands into a call to, say, __setjmp() and we need to define the
libunwind-version of setjmp() with the name of the actual function.
@ -39,14 +41,9 @@ setjmp (env)
{
void **wp = (void **) env;
#if UNW_TARGET_IA64
wp[0] = __builtin_dwarf_cfa () - 16;
wp[1] = __builtin_ia64_bsp ();
#else
/* this should work on most platforms, but may not be
performance-optimal; check the code! */
wp[0] = __builtin_frame_address (0);
wp[1] = (void *) (uintptr_t) 0;
#endif
wp[JB_SP] = __builtin_frame_address (0);
wp[JB_RP] = (unw_word_t) __builtin_return_address (0);
return 0;
}