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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)signal.h 8.1 (Berkeley) 6/11/93 30 * $FreeBSD$ 31 */ 32 33 #ifndef _MACHINE_SIGNAL_H_ 34 #define _MACHINE_SIGNAL_H_ 35 36 #include <sys/cdefs.h> 37 #include <sys/_sigset.h> 38 39 /* 40 * Machine-dependent signal definitions 41 */ 42 43 typedef int sig_atomic_t; 44 45 #if __BSD_VISIBLE 46 #include <machine/trap.h> /* codes for SIGILL, SIGFPE */ 47 48 /* 49 * Only the kernel should need these old type definitions. 50 */ 51 #if defined(_KERNEL) && defined(COMPAT_43) 52 /* 53 * Information pushed on stack when a signal is delivered. 54 * This is used by the kernel to restore state following 55 * execution of the signal handler. It is also made available 56 * to the handler to allow it to restore state properly if 57 * a non-standard exit is performed. 58 */ 59 struct osigcontext { 60 int sc_onstack; /* sigstack state to restore */ 61 osigset_t sc_mask; /* signal mask to restore */ 62 int sc_esp; /* machine state follows: */ 63 int sc_ebp; 64 int sc_isp; 65 int sc_eip; 66 int sc_efl; 67 int sc_es; 68 int sc_ds; 69 int sc_cs; 70 int sc_ss; 71 int sc_edi; 72 int sc_esi; 73 int sc_ebx; 74 int sc_edx; 75 int sc_ecx; 76 int sc_eax; 77 int sc_gs; 78 int sc_fs; 79 int sc_trapno; 80 int sc_err; 81 }; 82 #endif 83 84 /* 85 * The sequence of the fields/registers in struct sigcontext should match 86 * those in mcontext_t. 87 */ 88 struct sigcontext { 89 struct __sigset sc_mask; /* signal mask to restore */ 90 int sc_onstack; /* sigstack state to restore */ 91 int sc_gs; /* machine state (struct trapframe) */ 92 int sc_fs; 93 int sc_es; 94 int sc_ds; 95 int sc_edi; 96 int sc_esi; 97 int sc_ebp; 98 int sc_isp; 99 int sc_ebx; 100 int sc_edx; 101 int sc_ecx; 102 int sc_eax; 103 int sc_trapno; 104 int sc_err; 105 int sc_eip; 106 int sc_cs; 107 int sc_efl; 108 int sc_esp; 109 int sc_ss; 110 int sc_len; /* sizeof(mcontext_t) */ 111 /* 112 * XXX - See <machine/ucontext.h> and <machine/npx.h> for 113 * the following fields. 114 */ 115 int sc_fpformat; 116 int sc_ownedfp; 117 int sc_spare1[1]; 118 int sc_fpstate[128] __aligned(16); 119 int sc_spare2[8]; 120 }; 121 122 #define sc_sp sc_esp 123 #define sc_fp sc_ebp 124 #define sc_pc sc_eip 125 #define sc_ps sc_efl 126 #define sc_eflags sc_efl 127 128 #endif /* __BSD_VISIBLE */ 129 130 #endif /* !_MACHINE_SIGNAL_H_ */ 131