signal.h revision 1.15
1/* $NetBSD: signal.h,v 1.15 2003/01/17 23:10:29 thorpej 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 41typedef int sig_atomic_t; 42 43#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 44 !defined(_XOPEN_SOURCE) 45/* 46 * Get the "code" values 47 */ 48#include <machine/trap.h> 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_gs; 60 int sc_fs; 61 int sc_es; 62 int sc_ds; 63 int sc_edi; 64 int sc_esi; 65 int sc_ebp; 66 int sc_ebx; 67 int sc_edx; 68 int sc_ecx; 69 int sc_eax; 70 /* XXX */ 71 int sc_eip; 72 int sc_cs; 73 int sc_eflags; 74 int sc_esp; 75 int sc_ss; 76 77 int sc_onstack; /* sigstack state to restore */ 78 int sc_mask; /* signal mask to restore (old style) */ 79 80 int sc_trapno; /* XXX should be above */ 81 int sc_err; 82}; 83#endif 84 85struct sigcontext { 86 int sc_gs; 87 int sc_fs; 88 int sc_es; 89 int sc_ds; 90 int sc_edi; 91 int sc_esi; 92 int sc_ebp; 93 int sc_ebx; 94 int sc_edx; 95 int sc_ecx; 96 int sc_eax; 97 /* XXX */ 98 int sc_eip; 99 int sc_cs; 100 int sc_eflags; 101 int sc_esp; 102 int sc_ss; 103 104 int sc_onstack; /* sigstack state to restore */ 105 int __sc_mask13; /* signal mask to restore (old style) */ 106 107 int sc_trapno; /* 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) \ 120do { \ 121 (sc)->sc_gs = (uc)->uc_mcontext.__gregs[_REG_GS]; \ 122 (sc)->sc_fs = (uc)->uc_mcontext.__gregs[_REG_FS]; \ 123 (sc)->sc_es = (uc)->uc_mcontext.__gregs[_REG_ES]; \ 124 (sc)->sc_ds = (uc)->uc_mcontext.__gregs[_REG_DS]; \ 125 (sc)->sc_edi = (uc)->uc_mcontext.__gregs[_REG_EDI]; \ 126 (sc)->sc_esi = (uc)->uc_mcontext.__gregs[_REG_ESI]; \ 127 (sc)->sc_ebp = (uc)->uc_mcontext.__gregs[_REG_EBP]; \ 128 (sc)->sc_ebx = (uc)->uc_mcontext.__gregs[_REG_EBX]; \ 129 (sc)->sc_edx = (uc)->uc_mcontext.__gregs[_REG_EDX]; \ 130 (sc)->sc_ecx = (uc)->uc_mcontext.__gregs[_REG_ECX]; \ 131 (sc)->sc_eax = (uc)->uc_mcontext.__gregs[_REG_EAX]; \ 132 (sc)->sc_eip = (uc)->uc_mcontext.__gregs[_REG_EIP]; \ 133 (sc)->sc_cs = (uc)->uc_mcontext.__gregs[_REG_CS]; \ 134 (sc)->sc_eflags = (uc)->uc_mcontext.__gregs[_REG_EFL]; \ 135 (sc)->sc_esp = (uc)->uc_mcontext.__gregs[_REG_UESP]; \ 136 (sc)->sc_ss = (uc)->uc_mcontext.__gregs[_REG_SS]; \ 137 (sc)->sc_trapno = (uc)->uc_mcontext.__gregs[_REG_TRAPNO]; \ 138 (sc)->sc_err = (uc)->uc_mcontext.__gregs[_REG_ERR]; \ 139} while (/*CONSTCOND*/0) 140 141#define _SIGCONTEXT_TO_MCONTEXT(sc, uc) \ 142do { \ 143 (uc)->uc_mcontext.__gregs[_REG_GS] = (sc)->sc_gs; \ 144 (uc)->uc_mcontext.__gregs[_REG_FS] = (sc)->sc_fs; \ 145 (uc)->uc_mcontext.__gregs[_REG_ES] = (sc)->sc_es; \ 146 (uc)->uc_mcontext.__gregs[_REG_DS] = (sc)->sc_ds; \ 147 (uc)->uc_mcontext.__gregs[_REG_EDI] = (sc)->sc_edi; \ 148 (uc)->uc_mcontext.__gregs[_REG_ESI] = (sc)->sc_esi; \ 149 (uc)->uc_mcontext.__gregs[_REG_EBP] = (sc)->sc_ebp; \ 150 (uc)->uc_mcontext.__gregs[_REG_EBX] = (sc)->sc_ebx; \ 151 (uc)->uc_mcontext.__gregs[_REG_EDX] = (sc)->sc_edx; \ 152 (uc)->uc_mcontext.__gregs[_REG_ECX] = (sc)->sc_ecx; \ 153 (uc)->uc_mcontext.__gregs[_REG_EAX] = (sc)->sc_eax; \ 154 (uc)->uc_mcontext.__gregs[_REG_EIP] = (sc)->sc_eip; \ 155 (uc)->uc_mcontext.__gregs[_REG_CS] = (sc)->sc_cs; \ 156 (uc)->uc_mcontext.__gregs[_REG_EFL] = (sc)->sc_eflags; \ 157 (uc)->uc_mcontext.__gregs[_REG_UESP] = (sc)->sc_esp; \ 158 (uc)->uc_mcontext.__gregs[_REG_UESP] = (sc)->sc_esp; \ 159 (uc)->uc_mcontext.__gregs[_REG_SS] = (sc)->sc_ss; \ 160 (uc)->uc_mcontext.__gregs[_REG_TRAPNO] = (sc)->sc_trapno; \ 161 (uc)->uc_mcontext.__gregs[_REG_ERR] = (sc)->sc_err; \ 162} while (/*CONSTCOND*/0) 163 164#define sc_sp sc_esp 165#define sc_fp sc_ebp 166#define sc_pc sc_eip 167#define sc_ps sc_eflags 168 169#endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */ 170#endif /* !_I386_SIGNAL_H_ */ 171