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[/] [c0or1k/] [trunk/] [conts/] [posix/] [libposix/] [include/] [posix/] [bits/] [setjmp.h] - Blame information for rev 2

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1 2 drasko
/* Copyright (C) 1997, 1998 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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/* Define the machine-dependent type `jmp_buf'.  ARM version. */
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#ifndef _BITS_SETJMP_H
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#define _BITS_SETJMP_H  1
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#if !defined _SETJMP_H && !defined _PTHREAD_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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#ifndef _ASM
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/* Jump buffer contains v1-v6, sl, fp, sp and pc.  Other registers are not
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   saved.  */
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#ifdef __ARM_EABI__
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/* The exact set of registers saved may depend on the particular core
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   in use, as some coprocessor registers may need to be saved.  The C
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   Library ABI requires that the buffer be 8-byte aligned, and
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   recommends that the buffer contain 64 words.  The first 28 words
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   are occupied by v1-v6, sl, fp, sp, pc, d8-d15, and fpscr.  (Note
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   that d8-15 require 17 words, due to the use of fstmx.)  */
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typedef int __jmp_buf[64] __attribute__((aligned (8)));
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#elif defined __MAVERICK__ || defined __IWMMXT__
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typedef int __jmp_buf[34];
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#else
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typedef int __jmp_buf[22];
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#endif
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#endif
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#define __JMP_BUF_SP            8
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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[__JMP_BUF_SP]))
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#endif  /* bits/setjmp.h */

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