47 lines
1.8 KiB
ArmAsm
47 lines
1.8 KiB
ArmAsm
/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. i386 version.
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Copyright (C) 1994, 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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/* This just does a tail-call to `__sigsetjmp (ARG, 1)'.
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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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ENTRY (BP_SYM (setjmp))
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PUSH_SIGNAL_MASK (1)
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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 here
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here: popl %ecx
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addl $_GLOBAL_OFFSET_TABLE_+[.-here], %ecx
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movl C_SYMBOL_NAME (BP_SYM (__sigsetjmp)@GOT)(%ecx), %ecx
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jmp *%ecx
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#else
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jmp BP_SYM (__sigsetjmp)
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#endif
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END (BP_SYM (setjmp))
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