64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/* Copyright (C) 1997, 1998, 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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/* Define the machine-dependent type `jmp_buf'. Intel 386 version. */
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#ifndef _SETJMP_H
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# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
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#endif
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#if defined __USE_MISC || defined _ASM
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# define JB_BX 0
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# define JB_SI 1
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# define JB_DI 2
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# define JB_BP 3
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# define JB_SP 4
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# define JB_PC 5
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# define JB_SIZE 24
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#endif
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#ifdef _ASM
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/* We internally convert all setjmp (buf) calls to sigsetjmp (buf, mask),
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so we must shift with the call frame to insert the mask argument. */
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# if __BOUNDED_POINTERS__
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# define PUSH_SIGNAL_MASK(MASK) \
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popl %eax; /* return address */ \
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popl %ecx; /* jmp_buf value */ \
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popl %edx; /* jmp_buf low bound */ \
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pushl 0(%esp); /* jmp_buf high bound */ \
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movl $MASK, 4(%esp); \
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pushl %edx; \
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pushl %ecx; \
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pushl %eax
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# else
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# define PUSH_SIGNAL_MASK(MASK) \
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popl %eax; /* return address */ \
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popl %ecx; /* jmp_buf */ \
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pushl $MASK; \
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pushl %ecx; \
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pushl %eax
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# endif
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#else
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typedef int __jmp_buf[6];
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#endif
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/* Test if longjmp to JMPBUF would unwind the frame
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containing a local variable at ADDRESS. */
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#define _JMPBUF_UNWINDS(jmpbuf, address) \
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((void *) (address) < (void *) (jmpbuf)[JB_SP])
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