signal.h revision 1.7
1/* $NetBSD: signal.h,v 1.7 2003/08/07 16:29:29 agc Exp $ */ 2 3/* 4 * Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)signal.h 7.16 (Berkeley) 3/17/91 32 */ 33 34#ifndef _SH3_SIGNAL_H_ 35#define _SH3_SIGNAL_H_ 36 37#include <sys/featuretest.h> 38 39typedef int sig_atomic_t; 40 41#if defined(_NETBSD_SOURCE) 42 43/* 44 * Information pushed on stack when a signal is delivered. 45 * This is used by the kernel to restore state following 46 * execution of the signal handler. It is also made available 47 * to the handler to allow it to restore state properly if 48 * a non-standard exit is performed. 49 */ 50#if defined(__LIBC12_SOURCE__) || defined(_KERNEL) 51struct sigcontext13 { 52 int sc_spc; 53 int sc_ssr; 54 int sc_pr; 55 int sc_r14; 56 int sc_r13; 57 int sc_r12; 58 int sc_r11; 59 int sc_r10; 60 int sc_r9; 61 int sc_r8; 62 int sc_r7; 63 int sc_r6; 64 int sc_r5; 65 int sc_r4; 66 int sc_r3; 67 int sc_r2; 68 int sc_r1; 69 int sc_r0; 70 int sc_r15; 71 72 int sc_onstack; /* sigstack state to restore */ 73 int sc_mask; /* signal mask to restore (old style) */ 74 75 int sc_expevt; /* XXX should be above */ 76 int sc_err; 77}; 78#endif 79 80struct sigcontext { 81 int sc_spc; 82 int sc_ssr; 83 int sc_pr; 84 int sc_r14; 85 int sc_r13; 86 int sc_r12; 87 int sc_r11; 88 int sc_r10; 89 int sc_r9; 90 int sc_r8; 91 int sc_r7; 92 int sc_r6; 93 int sc_r5; 94 int sc_r4; 95 int sc_r3; 96 int sc_r2; 97 int sc_r1; 98 int sc_r0; 99 int sc_r15; 100 101 int sc_onstack; /* sigstack state to restore */ 102 103 int sc_expevt; /* XXX should be above */ 104 int sc_err; 105 106 sigset_t sc_mask; /* signal mask to restore (new style) */ 107}; 108 109/* 110 * The following macros are used to convert from a ucontext to sigcontext, 111 * and vice-versa. This is for building a sigcontext to deliver to old-style 112 * signal handlers, and converting back (in the event the handler modifies 113 * the context). 114 */ 115#define _MCONTEXT_TO_SIGCONTEXT(uc, sc) \ 116do { \ 117 memcpy(&(sc)->sc_pr, &(uc)->uc_mcontext.__gregs[_REG_PR], \ 118 17 * sizeof(unsigned int)); \ 119 (sc)->sc_spc = (uc)->uc_mcontext.__gregs[_REG_PC]; \ 120 (sc)->sc_ssr = (uc)->uc_mcontext.__gregs[_REG_SR]; \ 121 (sc)->sc_expevt = (uc)->uc_mcontext.__gregs[_REG_EXPEVT]; \ 122 (sc)->sc_err = 0; /* XXX */ \ 123} while (/*CONSTCOND*/0) 124 125#define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \ 126do { \ 127 memcpy(&(uc)->uc_mcontext.__gregs[_REG_PR], &(sc)->sc_pr, \ 128 17 * sizeof(unsigned int)); \ 129 (uc)->uc_mcontext.__gregs[_REG_PC] = (sc)->sc_spc; \ 130 (uc)->uc_mcontext.__gregs[_REG_SR] = (sc)->sc_ssr; \ 131 (uc)->uc_mcontext.__gregs[_REG_EXPEVT] = (sc)->sc_expevt; \ 132} while (/*CONSTCOND*/0) 133 134#endif /* _NETBSD_SOURCE */ 135#endif /* !_SH3_SIGNAL_H_ */ 136