signal.h revision 1.8
1/* $NetBSD: signal.h,v 1.8 2003/11/23 23:13:11 uwe 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#define __HAVE_SIGINFO 42#ifdef COMPAT_16 43#define SIGTRAMP_VALID(vers) ((unsigned)(vers) <= 2) 44#else 45#define SIGTRAMP_VALID(vers) ((vers) == 2) 46#endif 47 48#if defined(_NETBSD_SOURCE) 49 50/* 51 * Information pushed on stack when a signal is delivered. 52 * This is used by the kernel to restore state following 53 * execution of the signal handler. It is also made available 54 * to the handler to allow it to restore state properly if 55 * a non-standard exit is performed. 56 */ 57#if defined(__LIBC12_SOURCE__) || defined(_KERNEL) 58struct sigcontext13 { 59 int sc_spc; 60 int sc_ssr; 61 int sc_pr; 62 int sc_r14; 63 int sc_r13; 64 int sc_r12; 65 int sc_r11; 66 int sc_r10; 67 int sc_r9; 68 int sc_r8; 69 int sc_r7; 70 int sc_r6; 71 int sc_r5; 72 int sc_r4; 73 int sc_r3; 74 int sc_r2; 75 int sc_r1; 76 int sc_r0; 77 int sc_r15; 78 79 int sc_onstack; /* sigstack state to restore */ 80 int sc_mask; /* signal mask to restore (old style) */ 81 82 int sc_expevt; /* XXX should be above */ 83 int sc_err; 84}; 85#endif 86 87struct sigcontext { 88 int sc_spc; 89 int sc_ssr; 90 int sc_pr; 91 int sc_r14; 92 int sc_r13; 93 int sc_r12; 94 int sc_r11; 95 int sc_r10; 96 int sc_r9; 97 int sc_r8; 98 int sc_r7; 99 int sc_r6; 100 int sc_r5; 101 int sc_r4; 102 int sc_r3; 103 int sc_r2; 104 int sc_r1; 105 int sc_r0; 106 int sc_r15; 107 108 int sc_onstack; /* sigstack state to restore */ 109 110 int sc_expevt; /* XXX should be above */ 111 int sc_err; 112 113 sigset_t sc_mask; /* signal mask to restore (new style) */ 114}; 115 116/* 117 * The following macros are used to convert from a ucontext to sigcontext, 118 * and vice-versa. This is for building a sigcontext to deliver to old-style 119 * signal handlers, and converting back (in the event the handler modifies 120 * the context). 121 */ 122#define _MCONTEXT_TO_SIGCONTEXT(uc, sc) \ 123do { \ 124 memcpy(&(sc)->sc_pr, &(uc)->uc_mcontext.__gregs[_REG_PR], \ 125 17 * sizeof(unsigned int)); \ 126 (sc)->sc_spc = (uc)->uc_mcontext.__gregs[_REG_PC]; \ 127 (sc)->sc_ssr = (uc)->uc_mcontext.__gregs[_REG_SR]; \ 128 (sc)->sc_expevt = (uc)->uc_mcontext.__gregs[_REG_EXPEVT]; \ 129 (sc)->sc_err = 0; /* XXX */ \ 130} while (/*CONSTCOND*/0) 131 132#define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \ 133do { \ 134 memcpy(&(uc)->uc_mcontext.__gregs[_REG_PR], &(sc)->sc_pr, \ 135 17 * sizeof(unsigned int)); \ 136 (uc)->uc_mcontext.__gregs[_REG_PC] = (sc)->sc_spc; \ 137 (uc)->uc_mcontext.__gregs[_REG_SR] = (sc)->sc_ssr; \ 138 (uc)->uc_mcontext.__gregs[_REG_EXPEVT] = (sc)->sc_expevt; \ 139} while (/*CONSTCOND*/0) 140 141#endif /* _NETBSD_SOURCE */ 142#endif /* !_SH3_SIGNAL_H_ */ 143