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e5f88e0ca0
(POP_ERRNO_LOCATION_RETURN): Fold insns. * sysdeps/i386/bits/setjmp.h (JB_SIZE): New constant. (PUSH_SIGNAL_MASK): New macro. * sysdeps/i386/__longjmp.S (__longjmp): Wrap symbol in BP_SYM (). LEAVE is unnecessary. Check bounds of jmp_buf. * sysdeps/i386/elf/setjmp.S: Call PUSH_SIGNAL_MASK. Wrap symbols in BP_SYM (). Check bounds of jmp_buf. Don't call LEAVE until immediately before tail-call. * sysdeps/i386/setjmp.S: Likewise. * sysdeps/i386/bsd-_setjmp.S: Likewise. * sysdeps/i386/bsd-setjmp.S: Likewise. 2000-06-29 Greg McGary <greg@mcgary.org> * sysdeps/i386/bp-asm.h (PCOFF): New constant. (POP_ERRNO_LOCATION_RETURN): Fold insns. * sysdeps/i386/bits/setjmp.h (JB_SIZE): New constant. (PUSH_SIGNAL_MASK): New macro. * sysdeps/i386/__longjmp.S (__longjmp): Wrap symbol in BP_SYM (). LEAVE is unnecessary. Check bounds of jmp_buf. * sysdeps/i386/elf/setjmp.S: Call PUSH_SIGNAL_MASK. Wrap symbols in BP_SYM (). Check bounds of jmp_buf. Don't call LEAVE until immediately before tail-call. * sysdeps/i386/setjmp.S: Likewise. * sysdeps/i386/bsd-_setjmp.S: Likewise. * sysdeps/i386/bsd-setjmp.S: Likewise.
70 lines
2.3 KiB
ArmAsm
70 lines
2.3 KiB
ArmAsm
/* setjmp for i386.
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Copyright (C) 1995, 1996, 1997, 2000 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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#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 <asm-syntax.h>
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#include "bp-sym.h"
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#include "bp-asm.h"
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/* Binary compatibility entry point. */
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ENTRY (BP_SYM (__setjmp))
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PUSH_SIGNAL_MASK (0)
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/* FALL THROUGH */
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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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movl %ebp, (JB_BP*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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/* 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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