1 /* $NetBSD: signal.h,v 1.6 2003/04/28 23:16:23 bjh21 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)signal.h 7.16 (Berkeley) 3/17/91 36 */ 37 38 #ifndef _SH3_SIGNAL_H_ 39 #define _SH3_SIGNAL_H_ 40 41 #include <sys/featuretest.h> 42 43 typedef int sig_atomic_t; 44 45 #if defined(_NETBSD_SOURCE) 46 47 /* 48 * Information pushed on stack when a signal is delivered. 49 * This is used by the kernel to restore state following 50 * execution of the signal handler. It is also made available 51 * to the handler to allow it to restore state properly if 52 * a non-standard exit is performed. 53 */ 54 #if defined(__LIBC12_SOURCE__) || defined(_KERNEL) 55 struct sigcontext13 { 56 int sc_spc; 57 int sc_ssr; 58 int sc_pr; 59 int sc_r14; 60 int sc_r13; 61 int sc_r12; 62 int sc_r11; 63 int sc_r10; 64 int sc_r9; 65 int sc_r8; 66 int sc_r7; 67 int sc_r6; 68 int sc_r5; 69 int sc_r4; 70 int sc_r3; 71 int sc_r2; 72 int sc_r1; 73 int sc_r0; 74 int sc_r15; 75 76 int sc_onstack; /* sigstack state to restore */ 77 int sc_mask; /* signal mask to restore (old style) */ 78 79 int sc_expevt; /* XXX should be above */ 80 int sc_err; 81 }; 82 #endif 83 84 struct sigcontext { 85 int sc_spc; 86 int sc_ssr; 87 int sc_pr; 88 int sc_r14; 89 int sc_r13; 90 int sc_r12; 91 int sc_r11; 92 int sc_r10; 93 int sc_r9; 94 int sc_r8; 95 int sc_r7; 96 int sc_r6; 97 int sc_r5; 98 int sc_r4; 99 int sc_r3; 100 int sc_r2; 101 int sc_r1; 102 int sc_r0; 103 int sc_r15; 104 105 int sc_onstack; /* sigstack state to restore */ 106 107 int sc_expevt; /* XXX should be above */ 108 int sc_err; 109 110 sigset_t sc_mask; /* signal mask to restore (new style) */ 111 }; 112 113 /* 114 * The following macros are used to convert from a ucontext to sigcontext, 115 * and vice-versa. This is for building a sigcontext to deliver to old-style 116 * signal handlers, and converting back (in the event the handler modifies 117 * the context). 118 */ 119 #define _MCONTEXT_TO_SIGCONTEXT(uc, sc) \ 120 do { \ 121 memcpy(&(sc)->sc_pr, &(uc)->uc_mcontext.__gregs[_REG_PR], \ 122 17 * sizeof(unsigned int)); \ 123 (sc)->sc_spc = (uc)->uc_mcontext.__gregs[_REG_PC]; \ 124 (sc)->sc_ssr = (uc)->uc_mcontext.__gregs[_REG_SR]; \ 125 (sc)->sc_expevt = (uc)->uc_mcontext.__gregs[_REG_EXPEVT]; \ 126 (sc)->sc_err = 0; /* XXX */ \ 127 } while (/*CONSTCOND*/0) 128 129 #define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \ 130 do { \ 131 memcpy(&(uc)->uc_mcontext.__gregs[_REG_PR], &(sc)->sc_pr, \ 132 17 * sizeof(unsigned int)); \ 133 (uc)->uc_mcontext.__gregs[_REG_PC] = (sc)->sc_spc; \ 134 (uc)->uc_mcontext.__gregs[_REG_SR] = (sc)->sc_ssr; \ 135 (uc)->uc_mcontext.__gregs[_REG_EXPEVT] = (sc)->sc_expevt; \ 136 } while (/*CONSTCOND*/0) 137 138 #endif /* _NETBSD_SOURCE */ 139 #endif /* !_SH3_SIGNAL_H_ */ 140