1 /* Copyright (C) 1997,1998,2005,2006 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 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 /* Jump buffer contains v1-v6, sl, fp, sp and pc. Other registers are not 28 saved. */ 29 #ifdef __ARM_EABI__ 30 /* The exact set of registers saved may depend on the particular core 31 in use, as some coprocessor registers may need to be saved. The C 32 Library ABI requires that the buffer be 8-byte aligned, and 33 recommends that the buffer contain 64 words. The first 28 words 34 are occupied by v1-v6, sl, fp, sp, pc, d8-d15, and fpscr. (Note 35 that d8-15 require 17 words, due to the use of fstmx.) */ 36 typedef int __jmp_buf[64] __attribute__((aligned (8))); 37 #elif defined __MAVERICK__ || defined __IWMMXT__ 38 typedef int __jmp_buf[34]; 39 #else 40 # ifdef __UCLIBC_HAS_FPU__ 41 typedef int __jmp_buf[22]; 42 # else 43 typedef int __jmp_buf[10]; 44 # endif 45 #endif 46 #endif 47