ports/sysdeps/arm/bits/setjmp.h

   1 /* Copyright (C) 2004, 2005, 2006, 2009 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library.  If not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 /* Define the machine-dependent type `jmp_buf'.  ARM EABI version.  */
  19
  20 #ifndef _BITS_SETJMP_H
  21 #define _BITS_SETJMP_H 1
  22
  23 #if !defined _SETJMP_H && !defined _PTHREAD_H
  24 # error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
  25 #endif
  26
  27 #ifndef _ASM
  28 /* The exact set of registers saved may depend on the particular core
  29    in use, as some coprocessor registers may need to be saved.  The C
  30    Library ABI requires that the buffer be 8-byte aligned, and
  31    recommends that the buffer contain 64 words.  The first 28 words
  32    are occupied by v1-v6, sl, fp, sp, pc, d8-d15, and fpscr.  (Note
  33    that d8-15 require 17 words, due to the use of fstmx.)  */
  34 typedef int __jmp_buf[64] __attribute__((__aligned__ (8)));
  35 #endif
  36
  37 #endif