setjmp.h

来自「Glibc 2.3.2源代码(解压后有100多M)」· C头文件 代码 · 共 55 行

/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

/* Define the machine-dependent type `jmp_buf', CRIS version.  */

/* Note that saving and restoring CCR has no meaning in user mode, so we
   don't actually do it; the slot is now reserved.

   jmp_buf[0] - PC
   jmp_buf[1] - SP (R14)
   jmp_buf[2] - R13
   jmp_buf[3] - R12
   jmp_buf[4] - R11
   jmp_buf[5] - R10
   jmp_buf[6] - R9
   jmp_buf[7] - R8
   jmp_buf[8] - R7
   jmp_buf[9] - R6
   jmp_buf[10] - R5
   jmp_buf[11] - R4
   jmp_buf[12] - R3
   jmp_buf[13] - R2
   jmp_buf[14] - R1
   jmp_buf[15] - R0
   jmp_buf[16] - SRP
   jmp_buf[17] - CCR  */

#ifndef	_ASM
typedef unsigned long int __jmp_buf[18];
#endif

#if	defined (__USE_MISC) || defined (_ASM)
#define JB_SP 1
#endif

/* Test if longjmp to JMPBUF would unwind the frame
   containing a local variable at ADDRESS.  */
#define _JMPBUF_UNWINDS(jmpbuf, address) \
  ((unsigned long int) (address) < (jmpbuf)[JB_SP])