e3726b056b
Thu Aug 31 13:23:35 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * sysdeps/unix/i386/brk.S [PIC]: Set __curbrk through the GOT. Rewrote i386 setjmp code in assembly, so as to avoid fighting with the compiler for the register values. * sysdeps/i386/setjmp.S, sysdeps/i386/__longjmp.S: New files. * sysdeps/i386/setjmp.c, sysdeps/i386/__longjmp.c: Files removed. * sysdeps/i386/jmp_buf.h [! _ASM] (__jmp_buf): Define as array of ints. [__USE_MISC || _ASM] (JB_*): New macros, for indices therein. (_JMPBUF_UNWINDS): Use JB_SP.
37 lines
1.3 KiB
ArmAsm
37 lines
1.3 KiB
ArmAsm
/* setjmp for i386.
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Copyright (C) 1995 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
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <sysdep.h>
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#define _ASM
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#include <jmp_buf.h>
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ENTRY (__sigsetjmp)
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movl 4(%esp), %eax /* User's jmp_buf in %eax. */
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/* Save registers. */
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movl %ebx, JB_BX(%eax)
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movl %esi, JB_SI(%eax)
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movl %edi, JB_DI(%eax)
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movl %ebp, JB_BP(%eax)
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leal 4(%esp), %ecx /* Save SP as it will be after we return. */
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movl %ecx, JB_SP(%eax)
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movl 0(%esp), %ecx /* Save PC we are returning to now. */
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movl %ecx, JB_PC(%eax)
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xorl %eax, %eax /* Return zero. */
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ret
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