1 /* Copyright (C) 1997-2021 Free Software Foundation, Inc. 2 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public License as 7 published by the Free Software Foundation; either version 2.1 of the 8 License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 /* Define the machine-dependent type `jmp_buf'. */ 20 21 #ifndef _BITS_SETJMP_H 22 # define _BITS_SETJMP_H 1 23 24 #if !defined _SETJMP_H && !defined _PTHREAD_H 25 # error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead." 26 #endif 27 28 typedef struct __jmp_buf_internal_tag 29 { 30 /* There are 21 4-byte registers that should be saved: 31 r1, r2, r13-r31. Actually, there seems no need to save 32 r14, r16, r17, r18 (return addresses for interrupt/exception/trap). */ 33 int *__sp; /* dedicated name for r1. */ 34 long int __gregs[20]; 35 } __jmp_buf[1]; 36 37 #endif 38