1 /* 2 * Copyright (c) 1986, 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)signal.h 8.1 (Berkeley) 6/11/93 34 * $FreeBSD$ 35 */ 36 37 #ifndef _MACHINE_SIGNAL_H_ 38 #define _MACHINE_SIGNAL_H_ 39 40 /* 41 * Machine-dependent signal definitions 42 */ 43 44 typedef int sig_atomic_t; 45 46 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) 47 48 /* 49 * Minimum signal stack size. The current signal frame 50 * for i386 is 408 bytes large. 51 */ 52 #define MINSIGSTKSZ (512 * 4) 53 54 #include <machine/trap.h> /* codes for SIGILL, SIGFPE */ 55 56 /* 57 * Information pushed on stack when a signal is delivered. 58 * This is used by the kernel to restore state following 59 * execution of the signal handler. It is also made available 60 * to the handler to allow it to restore state properly if 61 * a non-standard exit is performed. 62 */ 63 typedef unsigned int osigset_t; 64 65 struct osigcontext { 66 int sc_onstack; /* sigstack state to restore */ 67 osigset_t sc_mask; /* signal mask to restore */ 68 int sc_esp; /* machine state follows: */ 69 int sc_ebp; 70 int sc_isp; 71 int sc_eip; 72 int sc_efl; 73 int sc_es; 74 int sc_ds; 75 int sc_cs; 76 int sc_ss; 77 int sc_edi; 78 int sc_esi; 79 int sc_ebx; 80 int sc_edx; 81 int sc_ecx; 82 int sc_eax; 83 int sc_gs; 84 int sc_fs; 85 int sc_trapno; 86 int sc_err; 87 }; 88 89 /* 90 * The sequence of the fields/registers in struct sigcontext should match 91 * those in mcontext_t. 92 */ 93 struct sigcontext { 94 sigset_t sc_mask; /* signal mask to restore */ 95 int sc_onstack; /* sigstack state to restore */ 96 int sc_gs; /* machine state (struct trapframe): */ 97 int sc_fs; 98 int sc_es; 99 int sc_ds; 100 int sc_edi; 101 int sc_esi; 102 int sc_ebp; 103 int sc_isp; 104 int sc_ebx; 105 int sc_edx; 106 int sc_ecx; 107 int sc_eax; 108 int sc_trapno; 109 int sc_err; 110 int sc_eip; 111 int sc_cs; 112 int sc_efl; 113 int sc_esp; 114 int sc_ss; 115 /* 116 * XXX FPU state is 27 * 4 bytes h/w, 1 * 4 bytes s/w (probably not 117 * needed here), or that + 16 * 4 bytes for emulators (probably all 118 * needed here). The "spare" bytes are mostly not spare. 119 */ 120 int sc_fpregs[28]; /* machine state (FPU): */ 121 int sc_spare[17]; 122 }; 123 124 #define sc_sp sc_esp 125 #define sc_fp sc_ebp 126 #define sc_pc sc_eip 127 #define sc_ps sc_efl 128 #define sc_eflags sc_efl 129 130 #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */ 131 132 #endif /* !_MACHINE_SIGNAL_H_ */ 133