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glibc  2.9
setjmp.h
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00001 /* Copyright (C) 1997, 1998, 1999, 2005 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 /* Define the machine-dependent type `jmp_buf'.  PowerPC version.  */
00020 
00021 #ifndef _SETJMP_H
00022 # error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
00023 #endif
00024 
00025 /* The previous bits/setjmp.h had __jmp_buf defined as a structure.
00026    We use an array of 'long int' instead, to make writing the
00027    assembler easier. Naturally, user code should not depend on
00028    either representation. */
00029 
00030 #if defined __USE_MISC || defined _ASM
00031 # define JB_GPR1   0  /* Also known as the stack pointer */
00032 # define JB_GPR2   1
00033 # define JB_LR     2  /* The address we will return to */
00034 # define JB_GPRS   3  /* GPRs 14 through 31 are saved, 18 in total */
00035 # define JB_CR     21 /* Condition code registers. */
00036 # define JB_FPRS   22 /* FPRs 14 through 31 are saved, 18*2 words total */
00037 #endif
00038 
00039 #ifndef       _ASM
00040 typedef long int __jmp_buf[64];
00041 #endif
00042 
00043 /* Test if longjmp to JMPBUF would unwind the frame
00044    containing a local variable at ADDRESS.  */
00045 #define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \
00046   ((void *) (address) < (void *) demangle ((jmpbuf)[JB_GPR1]))