1995-02-18 09:27:10 +08:00
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/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. i386 version.
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2006-01-12 17:27:47 +08:00
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Copyright (C) 1994-1997,2000-2002,2005, 2006 Free Software Foundation, Inc.
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1997-03-20 10:20:57 +08:00
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This file is part of the GNU C Library.
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1995-02-18 09:27:10 +08:00
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1997-03-20 10:20:57 +08:00
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 12:58:11 +08:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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1995-02-18 09:27:10 +08:00
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1997-03-20 10:20:57 +08:00
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2001-07-06 12:58:11 +08:00
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Lesser General Public License for more details.
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1995-02-18 09:27:10 +08:00
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2001-07-06 12:58:11 +08:00
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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1995-02-18 09:27:10 +08:00
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/* This just does a tail-call to `__sigsetjmp (ARG, 0)'.
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We cannot do it in C because it must be a tail-call, so frame-unwinding
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in setjmp doesn't clobber the state restored by longjmp. */
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#include <sysdep.h>
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2006-01-12 17:27:47 +08:00
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#include <jmpbuf-offsets.h>
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2000-06-30 06:55:31 +08:00
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#include "bp-sym.h"
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#include "bp-asm.h"
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1995-02-18 09:27:10 +08:00
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2001-01-17 07:37:51 +08:00
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#define PARMS LINKAGE /* no space for saved regs */
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#define JMPBUF PARMS
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#define SIGMSK JMPBUF+PTR_SIZE
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2000-06-30 06:55:31 +08:00
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ENTRY (BP_SYM (_setjmp))
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2001-01-17 07:37:51 +08:00
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ENTER
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2001-01-17 09:01:02 +08:00
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xorl %eax, %eax
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movl JMPBUF(%esp), %edx
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CHECK_BOUNDS_BOTH_WIDE (%edx, JMPBUF(%esp), $(JB_SIZE+4))
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2001-01-17 07:37:51 +08:00
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/* Save registers. */
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2001-01-17 09:01:02 +08:00
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movl %ebx, (JB_BX*4)(%edx)
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movl %esi, (JB_SI*4)(%edx)
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movl %edi, (JB_DI*4)(%edx)
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2001-01-17 07:37:51 +08:00
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leal JMPBUF(%esp), %ecx /* Save SP as it will be after we return. */
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2005-12-29 03:13:20 +08:00
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#ifdef PTR_MANGLE
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PTR_MANGLE (%ecx)
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#endif
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2001-01-17 09:01:02 +08:00
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movl %ecx, (JB_SP*4)(%edx)
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2001-01-17 07:37:51 +08:00
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movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
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2005-12-18 14:58:22 +08:00
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#ifdef PTR_MANGLE
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PTR_MANGLE (%ecx)
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#endif
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2001-01-17 09:01:02 +08:00
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movl %ecx, (JB_PC*4)(%edx)
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2001-01-17 07:37:51 +08:00
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LEAVE
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2001-01-17 09:01:02 +08:00
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movl %ebp, (JB_BP*4)(%edx) /* Save caller's frame pointer. */
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movl %eax, JB_SIZE(%edx) /* No signal mask set. */
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2001-01-17 07:37:51 +08:00
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ret
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2000-06-30 06:55:31 +08:00
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END (BP_SYM (_setjmp))
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2003-01-01 04:46:11 +08:00
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libc_hidden_def (_setjmp)
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