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 #include <sys/cdefs.h> 41 #include <sys/_sigset.h> 42 43 /* 44 * Machine-dependent signal definitions 45 */ 46 47 typedef int sig_atomic_t; 48 49 #if __XSI_VISIBLE 50 /* 51 * Minimum signal stack size. The current signal frame 52 * for i386 is 408 bytes large. 53 */ 54 #define MINSIGSTKSZ (512 * 4) 55 #endif 56 57 #if __BSD_VISIBLE 58 #include <machine/trap.h> /* codes for SIGILL, SIGFPE */ 59 60 /* 61 * Only the kernel should need these old type definitions. 62 */ 63 #if defined(_KERNEL) && defined(COMPAT_43) 64 /* 65 * Information pushed on stack when a signal is delivered. 66 * This is used by the kernel to restore state following 67 * execution of the signal handler. It is also made available 68 * to the handler to allow it to restore state properly if 69 * a non-standard exit is performed. 70 */ 71 struct osigcontext { 72 int sc_onstack; /* sigstack state to restore */ 73 osigset_t sc_mask; /* signal mask to restore */ 74 int sc_esp; /* machine state follows: */ 75 int sc_ebp; 76 int sc_isp; 77 int sc_eip; 78 int sc_efl; 79 int sc_es; 80 int sc_ds; 81 int sc_cs; 82 int sc_ss; 83 int sc_edi; 84 int sc_esi; 85 int sc_ebx; 86 int sc_edx; 87 int sc_ecx; 88 int sc_eax; 89 int sc_gs; 90 int sc_fs; 91 int sc_trapno; 92 int sc_err; 93 }; 94 #endif 95 96 /* 97 * The sequence of the fields/registers in struct sigcontext should match 98 * those in mcontext_t. 99 */ 100 struct sigcontext { 101 struct __sigset sc_mask; /* signal mask to restore */ 102 int sc_onstack; /* sigstack state to restore */ 103 int sc_gs; /* machine state (struct trapframe): */ 104 int sc_fs; 105 int sc_es; 106 int sc_ds; 107 int sc_edi; 108 int sc_esi; 109 int sc_ebp; 110 int sc_isp; 111 int sc_ebx; 112 int sc_edx; 113 int sc_ecx; 114 int sc_eax; 115 int sc_trapno; 116 int sc_err; 117 int sc_eip; 118 int sc_cs; 119 int sc_efl; 120 int sc_esp; 121 int sc_ss; 122 int sc_len; /* sizeof(struct mcontext_t) */ 123 /* 124 * XXX - See <machine/ucontext.h> and <machine/npx.h> for 125 * the following fields. 126 */ 127 int sc_fpformat; 128 int sc_ownedfp; 129 int sc_spare1[1]; 130 int sc_fpregs[128]; 131 int sc_spare2[8]; 132 }; 133 134 #define sc_sp sc_esp 135 #define sc_fp sc_ebp 136 #define sc_pc sc_eip 137 #define sc_ps sc_efl 138 #define sc_eflags sc_efl 139 140 #endif /* __BSD_VISIBLE */ 141 142 #endif /* !_MACHINE_SIGNAL_H_ */ 143