signal.h revision 1.16
1/* $NetBSD: signal.h,v 1.16 2003/04/28 23:16:19 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 _I386_SIGNAL_H_ 39#define _I386_SIGNAL_H_ 40 41#include <sys/featuretest.h> 42 43typedef int sig_atomic_t; 44 45#if defined(_NETBSD_SOURCE) 46/* 47 * Get the "code" values 48 */ 49#include <machine/trap.h> 50 51/* 52 * Information pushed on stack when a signal is delivered. 53 * This is used by the kernel to restore state following 54 * execution of the signal handler. It is also made available 55 * to the handler to allow it to restore state properly if 56 * a non-standard exit is performed. 57 */ 58#if defined(__LIBC12_SOURCE__) || defined(_KERNEL) 59struct sigcontext13 { 60 int sc_gs; 61 int sc_fs; 62 int sc_es; 63 int sc_ds; 64 int sc_edi; 65 int sc_esi; 66 int sc_ebp; 67 int sc_ebx; 68 int sc_edx; 69 int sc_ecx; 70 int sc_eax; 71 /* XXX */ 72 int sc_eip; 73 int sc_cs; 74 int sc_eflags; 75 int sc_esp; 76 int sc_ss; 77 78 int sc_onstack; /* sigstack state to restore */ 79 int sc_mask; /* signal mask to restore (old style) */ 80 81 int sc_trapno; /* XXX should be above */ 82 int sc_err; 83}; 84#endif 85 86struct sigcontext { 87 int sc_gs; 88 int sc_fs; 89 int sc_es; 90 int sc_ds; 91 int sc_edi; 92 int sc_esi; 93 int sc_ebp; 94 int sc_ebx; 95 int sc_edx; 96 int sc_ecx; 97 int sc_eax; 98 /* XXX */ 99 int sc_eip; 100 int sc_cs; 101 int sc_eflags; 102 int sc_esp; 103 int sc_ss; 104 105 int sc_onstack; /* sigstack state to restore */ 106 int __sc_mask13; /* signal mask to restore (old style) */ 107 108 int sc_trapno; /* XXX should be above */ 109 int sc_err; 110 111 sigset_t sc_mask; /* signal mask to restore (new style) */ 112}; 113 114/* 115 * The following macros are used to convert from a ucontext to sigcontext, 116 * and vice-versa. This is for building a sigcontext to deliver to old-style 117 * signal handlers, and converting back (in the event the handler modifies 118 * the context). 119 */ 120#define _MCONTEXT_TO_SIGCONTEXT(uc, sc) \ 121do { \ 122 (sc)->sc_gs = (uc)->uc_mcontext.__gregs[_REG_GS]; \ 123 (sc)->sc_fs = (uc)->uc_mcontext.__gregs[_REG_FS]; \ 124 (sc)->sc_es = (uc)->uc_mcontext.__gregs[_REG_ES]; \ 125 (sc)->sc_ds = (uc)->uc_mcontext.__gregs[_REG_DS]; \ 126 (sc)->sc_edi = (uc)->uc_mcontext.__gregs[_REG_EDI]; \ 127 (sc)->sc_esi = (uc)->uc_mcontext.__gregs[_REG_ESI]; \ 128 (sc)->sc_ebp = (uc)->uc_mcontext.__gregs[_REG_EBP]; \ 129 (sc)->sc_ebx = (uc)->uc_mcontext.__gregs[_REG_EBX]; \ 130 (sc)->sc_edx = (uc)->uc_mcontext.__gregs[_REG_EDX]; \ 131 (sc)->sc_ecx = (uc)->uc_mcontext.__gregs[_REG_ECX]; \ 132 (sc)->sc_eax = (uc)->uc_mcontext.__gregs[_REG_EAX]; \ 133 (sc)->sc_eip = (uc)->uc_mcontext.__gregs[_REG_EIP]; \ 134 (sc)->sc_cs = (uc)->uc_mcontext.__gregs[_REG_CS]; \ 135 (sc)->sc_eflags = (uc)->uc_mcontext.__gregs[_REG_EFL]; \ 136 (sc)->sc_esp = (uc)->uc_mcontext.__gregs[_REG_UESP]; \ 137 (sc)->sc_ss = (uc)->uc_mcontext.__gregs[_REG_SS]; \ 138 (sc)->sc_trapno = (uc)->uc_mcontext.__gregs[_REG_TRAPNO]; \ 139 (sc)->sc_err = (uc)->uc_mcontext.__gregs[_REG_ERR]; \ 140} while (/*CONSTCOND*/0) 141 142#define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \ 143do { \ 144 (uc)->uc_mcontext.__gregs[_REG_GS] = (sc)->sc_gs; \ 145 (uc)->uc_mcontext.__gregs[_REG_FS] = (sc)->sc_fs; \ 146 (uc)->uc_mcontext.__gregs[_REG_ES] = (sc)->sc_es; \ 147 (uc)->uc_mcontext.__gregs[_REG_DS] = (sc)->sc_ds; \ 148 (uc)->uc_mcontext.__gregs[_REG_EDI] = (sc)->sc_edi; \ 149 (uc)->uc_mcontext.__gregs[_REG_ESI] = (sc)->sc_esi; \ 150 (uc)->uc_mcontext.__gregs[_REG_EBP] = (sc)->sc_ebp; \ 151 (uc)->uc_mcontext.__gregs[_REG_EBX] = (sc)->sc_ebx; \ 152 (uc)->uc_mcontext.__gregs[_REG_EDX] = (sc)->sc_edx; \ 153 (uc)->uc_mcontext.__gregs[_REG_ECX] = (sc)->sc_ecx; \ 154 (uc)->uc_mcontext.__gregs[_REG_EAX] = (sc)->sc_eax; \ 155 (uc)->uc_mcontext.__gregs[_REG_EIP] = (sc)->sc_eip; \ 156 (uc)->uc_mcontext.__gregs[_REG_CS] = (sc)->sc_cs; \ 157 (uc)->uc_mcontext.__gregs[_REG_EFL] = (sc)->sc_eflags; \ 158 (uc)->uc_mcontext.__gregs[_REG_UESP] = (sc)->sc_esp; \ 159 (uc)->uc_mcontext.__gregs[_REG_UESP] = (sc)->sc_esp; \ 160 (uc)->uc_mcontext.__gregs[_REG_SS] = (sc)->sc_ss; \ 161 (uc)->uc_mcontext.__gregs[_REG_TRAPNO] = (sc)->sc_trapno; \ 162 (uc)->uc_mcontext.__gregs[_REG_ERR] = (sc)->sc_err; \ 163} while (/*CONSTCOND*/0) 164 165#define sc_sp sc_esp 166#define sc_fp sc_ebp 167#define sc_pc sc_eip 168#define sc_ps sc_eflags 169 170#endif /* _NETBSD_SOURCE */ 171#endif /* !_I386_SIGNAL_H_ */ 172