| 1 |
1325 |
phoenix |
/* setjmp for i386, ELF version.
|
| 2 |
|
|
Copyright (C) 1995, 1996, 1997, 2000, 2001 Free Software Foundation, Inc.
|
| 3 |
|
|
This file is part of the GNU C Library.
|
| 4 |
|
|
|
| 5 |
|
|
The GNU C Library is free software; you can redistribute it and/or
|
| 6 |
|
|
modify it under the terms of the GNU Lesser General Public
|
| 7 |
|
|
License as published by the Free Software Foundation; either
|
| 8 |
|
|
version 2.1 of the License, or (at your option) any later version.
|
| 9 |
|
|
|
| 10 |
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
| 11 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 12 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
| 13 |
|
|
Lesser General Public License for more details.
|
| 14 |
|
|
|
| 15 |
|
|
You should have received a copy of the GNU Lesser General Public
|
| 16 |
|
|
License along with the GNU C Library; if not, write to the Free
|
| 17 |
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
| 18 |
|
|
02111-1307 USA. */
|
| 19 |
|
|
|
| 20 |
|
|
#define _ASM
|
| 21 |
|
|
#define _SETJMP_H
|
| 22 |
|
|
#include
|
| 23 |
|
|
|
| 24 |
|
|
|
| 25 |
|
|
.globl __sigsetjmp;
|
| 26 |
|
|
.type __sigsetjmp,@function
|
| 27 |
|
|
.align 4;
|
| 28 |
|
|
|
| 29 |
|
|
__sigsetjmp:
|
| 30 |
|
|
movl 4 (%esp), %eax
|
| 31 |
|
|
/* Save registers. */
|
| 32 |
|
|
movl %ebx, (0 *4)(%eax)
|
| 33 |
|
|
movl %esi, (1 *4)(%eax)
|
| 34 |
|
|
movl %edi, (2 *4)(%eax)
|
| 35 |
|
|
/* Save SP as it will be after we return. */
|
| 36 |
|
|
leal 4(%esp), %ecx
|
| 37 |
|
|
movl %ecx, (4 *4)(%eax)
|
| 38 |
|
|
/* Save PC we are returning to now. */
|
| 39 |
|
|
movl 0(%esp), %ecx
|
| 40 |
|
|
movl %ecx, (5 *4)(%eax)
|
| 41 |
|
|
/* Save caller's frame pointer. */
|
| 42 |
|
|
movl %ebp, (3 *4)(%eax)
|
| 43 |
|
|
|
| 44 |
|
|
/* Make a tail call to __sigjmp_save; it takes the same args. */
|
| 45 |
|
|
#ifdef __PIC__
|
| 46 |
|
|
/* We cannot use the PLT, because it requires that %ebx be set, but
|
| 47 |
|
|
we can't save and restore our caller's value. Instead, we do an
|
| 48 |
|
|
indirect jump through the GOT, using for the temporary register
|
| 49 |
|
|
%ecx, which is call-clobbered. */
|
| 50 |
|
|
call .Lhere
|
| 51 |
|
|
.Lhere:
|
| 52 |
|
|
popl %ecx
|
| 53 |
|
|
addl $_GLOBAL_OFFSET_TABLE_+[.- .Lhere ], %ecx
|
| 54 |
|
|
movl __sigjmp_save @GOT (%ecx), %ecx
|
| 55 |
|
|
jmp *%ecx
|
| 56 |
|
|
#else
|
| 57 |
|
|
jmp __sigjmp_save
|
| 58 |
|
|
#endif
|
| 59 |
|
|
.size __sigsetjmp,.-__sigsetjmp;
|
