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41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
64 lines
2.2 KiB
ArmAsm
64 lines
2.2 KiB
ArmAsm
/* setjmp for i386, ELF version.
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Copyright (C) 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 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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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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Lesser General Public License for more details.
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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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#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 (__sigsetjmp))
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ENTER
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movl JMPBUF(%esp), %eax
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CHECK_BOUNDS_BOTH_WIDE (%eax, JMPBUF(%esp), $JB_SIZE)
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/* Save registers. */
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movl %ebx, (JB_BX*4)(%eax)
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movl %esi, (JB_SI*4)(%eax)
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movl %edi, (JB_DI*4)(%eax)
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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)(%eax)
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movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
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movl %ecx, (JB_PC*4)(%eax)
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LEAVE /* pop frame pointer to prepare for tail-call. */
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movl %ebp, (JB_BP*4)(%eax) /* Save caller's frame pointer. */
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/* Make a tail call to __sigjmp_save; it takes the same args. */
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#ifdef PIC
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/* We cannot use the PLT, because it requires that %ebx be set, but
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we can't save and restore our caller's value. Instead, we do an
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indirect jump through the GOT, using for the temporary register
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%ecx, which is call-clobbered. */
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call L(here)
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L(here):
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popl %ecx
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addl $_GLOBAL_OFFSET_TABLE_+[.-L(here)], %ecx
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movl C_SYMBOL_NAME (BP_SYM (__sigjmp_save)@GOT)(%ecx), %ecx
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jmp *%ecx
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#else
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jmp BP_SYM (__sigjmp_save)
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#endif
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END (BP_SYM (__sigsetjmp))
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