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Move JB_* macros to jmpbuf.h.

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(_longjmp): Simplify by taking advantage of new _UI_longjmp_cont.

(Logical change 1.259)
This commit is contained in:
hp.com!davidm 2004-08-31 13:59:10 +00:00
parent 197c9d517b
commit 352642247a
1 changed files with 5 additions and 25 deletions
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30
src/longjmp.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.
@ -31,22 +31,16 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include <signal.h>
#include <stdlib.h>
#include "jmpbuf.h"
#if UNW_TARGET_IA64
# include "ia64/rse.h"
/* chosen for compatibility with libc; NPTL peeks at SP and BSP: */
# define JB_SP 0
# define JB_RP 8
# define JB_BSP 17
#else
# define JB_SP 0
# define JB_RP 1
#endif
void
_longjmp (jmp_buf env, int val)
{
extern int _UI_siglongjmp_cont;
sigset_t current_mask;
extern int _UI_longjmp_cont;
unw_context_t uc;
unw_cursor_t c;
unw_word_t sp;
@ -81,27 +75,13 @@ _longjmp (jmp_buf env, int val)
/* found the right frame: */
if (sigprocmask (SIG_BLOCK, NULL, &current_mask) < 0)
abort ();
if (UNW_NUM_EH_REGS >= 4)
{
if (unw_set_reg (&c, UNW_REG_EH + 0, wp[JB_RP]) < 0
|| unw_set_reg (&c, UNW_REG_EH + 1, val) < 0
|| unw_set_reg (&c, UNW_REG_EH + 2,
((unw_word_t *) &current_mask)[0]) < 0
|| unw_set_reg (&c, UNW_REG_IP,
(unw_word_t) &_UI_siglongjmp_cont))
(unw_word_t) &_UI_longjmp_cont))
abort ();
if (_NSIG > 8 * sizeof (unw_word_t))
{
if (_NSIG > 16 * sizeof (unw_word_t))
abort ();
if (unw_set_reg (&c, UNW_REG_EH + 3,
((unw_word_t *) &current_mask)[1]) < 0)
abort ();
}
}
else
abort ();