/* setjmp for i386, ELF 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, see <http://www.gnu.org/licenses/>. */ .global __sigsetjmp .type __sigsetjmp,%function __sigsetjmp: 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) /* Make a tail call to __sigjmp_save; it takes the same args. */ #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 .Lhere .Lhere: popl %ecx addl $_GLOBAL_OFFSET_TABLE_+[.- .Lhere ], %ecx movl __sigjmp_save @GOT (%ecx), %ecx jmp *%ecx #else jmp __sigjmp_save #endif .size __sigsetjmp,.-__sigsetjmp