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56 lines
2.0 KiB
ArmAsm
56 lines
2.0 KiB
ArmAsm
/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. i386 version.
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Copyright (C) 1994,1995,1996,1997,2000,2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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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#define _ASM
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#define _SETJMP_H
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#include <bits/setjmp.h>
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#include "bp-sym.h"
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#include "bp-asm.h"
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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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ENTRY (BP_SYM (_setjmp))
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ENTER
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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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/* Save registers. */
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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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leal JMPBUF(%esp), %ecx /* Save SP as it will be after we return. */
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movl %ecx, (JB_SP*4)(%edx)
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movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
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movl %ecx, (JB_PC*4)(%edx)
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LEAVE
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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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ret
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END (BP_SYM (_setjmp))
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