| /* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. i386 version. |
| Copyright (C) 1995, 1996, 1997, 2000, 2001 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| 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. |
| |
| 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 |
| Lesser General Public License for more details. |
| |
| 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. */ |
| |
| #define _ASM |
| #define _SETJMP_H |
| #include <bits/setjmp.h> |
| |
| .global setjmp |
| .type setjmp,%function |
| setjmp: |
| movl 4 (%esp), %eax |
| /* Save registers. */ |
| movl %ebx, (0 *4)(%eax) |
| movl %esi, (1 *4)(%eax) |
| movl %edi, (2 *4)(%eax) |
| /* Save SP as it will be after we return. */ |
| leal 4 (%esp), %ecx |
| movl %ecx, (4 *4)(%eax) |
| /* Save PC we are returning to now. */ |
| movl 0 (%esp), %ecx |
| movl %ecx, (5 *4)(%eax) |
| /* Save caller's frame pointer. */ |
| movl %ebp, (3 *4)(%eax) |
| |
| /* Call __sigjmp_save. */ |
| pushl $1 |
| pushl 8(%esp) |
| #ifdef __PIC__ |
| /* We cannot use the PLT, because it requires that %ebx be set, but |
| we can't save and restore our caller's value. Instead, we do an |
| indirect jump through the GOT, using for the temporary register |
| %ecx, which is call-clobbered. */ |
| call here2 |
| here2: popl %ecx |
| addl $_GLOBAL_OFFSET_TABLE_+[.-here2], %ecx |
| movl __sigjmp_save @GOT (%ecx), %ecx |
| call *%ecx |
| #else |
| call __sigjmp_save |
| #endif |
| popl %ecx |
| popl %edx |
| ret |
| .size setjmp,.-setjmp |