/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. i386 version. Copyright (C) 1994,1995,1996,1997,2000,2001 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/>. */ /* This just does a tail-call to `__sigsetjmp (ARG, 0)'. 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 <jmpbuf-offsets.h> .global _setjmp .type _setjmp,%function _setjmp: xorl %eax, %eax movl 4 (%esp), %edx /* Save registers. */ movl %ebx, (JB_BX*4)(%edx) movl %esi, (JB_SI*4)(%edx) movl %edi, (JB_DI*4)(%edx) leal 4 (%esp), %ecx /* Save SP as it will be after we return. */ movl %ecx, (JB_SP*4)(%edx) movl 0 (%esp), %ecx /* Save PC we are returning to now. */ movl %ecx, (JB_PC*4)(%edx) movl %ebp, (JB_BP*4)(%edx) /* Save caller's frame pointer. */ movl %eax, JB_SIZE(%edx) /* No signal mask set. */ ret .size _setjmp,.-_setjmp