1995-02-18 01:27:10 +00:00
|
|
|
/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. i386 version.
|
2006-01-12 09:27:47 +00:00
|
|
|
Copyright (C) 1994-1997,2000,2001,2005, 2006 Free Software Foundation, Inc.
|
1997-03-20 02:20:57 +00:00
|
|
|
This file is part of the GNU C Library.
|
1995-02-18 01:27:10 +00:00
|
|
|
|
1997-03-20 02:20:57 +00:00
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
2001-07-06 04:58:11 +00:00
|
|
|
modify it under the terms of the GNU Lesser General Public
|
|
|
|
|
License as published by the Free Software Foundation; either
|
|
|
|
|
version 2.1 of the License, or (at your option) any later version.
|
1995-02-18 01:27:10 +00:00
|
|
|
|
1997-03-20 02:20:57 +00:00
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
2001-07-06 04:58:11 +00:00
|
|
|
Lesser General Public License for more details.
|
1995-02-18 01:27:10 +00:00
|
|
|
|
2001-07-06 04:58:11 +00:00
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
|
|
|
License along with the GNU C Library; if not, write to the Free
|
|
|
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
|
|
|
02111-1307 USA. */
|
1995-02-18 01:27:10 +00:00
|
|
|
|
|
|
|
|
/* This just does a tail-call to `__sigsetjmp (ARG, 1)'.
|
|
|
|
|
We cannot do it in C because it must be a tail-call, so frame-unwinding
|
|
|
|
|
in setjmp doesn't clobber the state restored by longjmp. */
|
|
|
|
|
|
|
|
|
|
#include <sysdep.h>
|
2006-01-12 09:27:47 +00:00
|
|
|
#include <jmpbuf-offsets.h>
|
2000-06-29 22:55:31 +00:00
|
|
|
#include "bp-sym.h"
|
|
|
|
|
#include "bp-asm.h"
|
1995-02-18 01:27:10 +00:00
|
|
|
|
2005-12-18 06:58:22 +00:00
|
|
|
#define PARMS LINKAGE /* no space for saved regs */
|
|
|
|
|
#define JMPBUF PARMS
|
|
|
|
|
#define SIGMSK JMPBUF+PTR_SIZE
|
|
|
|
|
|
2000-06-29 22:55:31 +00:00
|
|
|
ENTRY (BP_SYM (setjmp))
|
2001-01-16 23:37:51 +00:00
|
|
|
/* Note that we have to use a non-exported symbol in the next
|
|
|
|
|
jump since otherwise gas will emit it as a jump through the
|
|
|
|
|
PLT which is what we cannot use here. */
|
|
|
|
|
ENTER
|
|
|
|
|
|
|
|
|
|
movl JMPBUF(%esp), %eax
|
|
|
|
|
CHECK_BOUNDS_BOTH_WIDE (%eax, JMPBUF(%esp), $JB_SIZE)
|
|
|
|
|
|
|
|
|
|
/* Save registers. */
|
|
|
|
|
movl %ebx, (JB_BX*4)(%eax)
|
|
|
|
|
movl %esi, (JB_SI*4)(%eax)
|
|
|
|
|
movl %edi, (JB_DI*4)(%eax)
|
|
|
|
|
leal JMPBUF(%esp), %ecx /* Save SP as it will be after we return. */
|
2005-12-28 19:13:20 +00:00
|
|
|
#ifdef PTR_MANGLE
|
|
|
|
|
PTR_MANGLE (%ecx)
|
|
|
|
|
#endif
|
2001-01-16 23:37:51 +00:00
|
|
|
movl %ecx, (JB_SP*4)(%eax)
|
|
|
|
|
movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
|
2005-12-18 06:58:22 +00:00
|
|
|
#ifdef PTR_MANGLE
|
|
|
|
|
PTR_MANGLE (%ecx)
|
|
|
|
|
#endif
|
2001-01-16 23:37:51 +00:00
|
|
|
movl %ecx, (JB_PC*4)(%eax)
|
|
|
|
|
LEAVE /* pop frame pointer to prepare for tail-call. */
|
|
|
|
|
movl %ebp, (JB_BP*4)(%eax) /* Save caller's frame pointer. */
|
|
|
|
|
|
|
|
|
|
/* Call __sigjmp_save. */
|
|
|
|
|
pushl $1
|
2005-05-04 06:22:30 +00:00
|
|
|
cfi_adjust_cfa_offset (4)
|
2001-01-16 23:37:51 +00:00
|
|
|
pushl 8(%esp)
|
2005-05-04 06:22:30 +00:00
|
|
|
cfi_adjust_cfa_offset (4)
|
2001-01-16 23:37:51 +00:00
|
|
|
call BP_SYM (__sigjmp_save)
|
|
|
|
|
popl %ecx
|
2005-05-04 06:22:30 +00:00
|
|
|
cfi_adjust_cfa_offset (-4)
|
2001-01-16 23:37:51 +00:00
|
|
|
popl %edx
|
2005-05-04 06:22:30 +00:00
|
|
|
cfi_adjust_cfa_offset (-4)
|
2001-01-16 23:37:51 +00:00
|
|
|
ret
|
2000-06-29 22:55:31 +00:00
|
|
|
END (BP_SYM (setjmp))
|
