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 __XSI_VISIBLE 46 /* 47 * Minimum signal stack size. The current signal frame 48 * for i386 is 408 bytes large. 49 */ 50 #define MINSIGSTKSZ (512 * 4) 51 #endif 52 53 #if __BSD_VISIBLE 54 #include <machine/trap.h> /* codes for SIGILL, SIGFPE */ 55 56 /* 57 * Only the kernel should need these old type definitions. 58 */ 59 #if defined(_KERNEL) && defined(COMPAT_43) 60 /* 61 * Information pushed on stack when a signal is delivered. 62 * This is used by the kernel to restore state following 63 * execution of the signal handler. It is also made available 64 * to the handler to allow it to restore state properly if 65 * a non-standard exit is performed. 66 */ 67 struct osigcontext { 68 int sc_onstack; /* sigstack state to restore */ 69 osigset_t sc_mask; /* signal mask to restore */ 70 int sc_esp; /* machine state follows: */ 71 int sc_ebp; 72 int sc_isp; 73 int sc_eip; 74 int sc_efl; 75 int sc_es; 76 int sc_ds; 77 int sc_cs; 78 int sc_ss; 79 int sc_edi; 80 int sc_esi; 81 int sc_ebx; 82 int sc_edx; 83 int sc_ecx; 84 int sc_eax; 85 int sc_gs; 86 int sc_fs; 87 int sc_trapno; 88 int sc_err; 89 }; 90 #endif 91 92 /* 93 * The sequence of the fields/registers in struct sigcontext should match 94 * those in mcontext_t. 95 */ 96 struct sigcontext { 97 struct __sigset sc_mask; /* signal mask to restore */ 98 int sc_onstack; /* sigstack state to restore */ 99 int sc_gs; /* machine state (struct trapframe) */ 100 int sc_fs; 101 int sc_es; 102 int sc_ds; 103 int sc_edi; 104 int sc_esi; 105 int sc_ebp; 106 int sc_isp; 107 int sc_ebx; 108 int sc_edx; 109 int sc_ecx; 110 int sc_eax; 111 int sc_trapno; 112 int sc_err; 113 int sc_eip; 114 int sc_cs; 115 int sc_efl; 116 int sc_esp; 117 int sc_ss; 118 int sc_len; /* sizeof(mcontext_t) */ 119 /* 120 * XXX - See <machine/ucontext.h> and <machine/npx.h> for 121 * the following fields. 122 */ 123 int sc_fpformat; 124 int sc_ownedfp; 125 int sc_spare1[1]; 126 int sc_fpstate[128] __aligned(16); 127 int sc_spare2[8]; 128 }; 129 130 #define sc_sp sc_esp 131 #define sc_fp sc_ebp 132 #define sc_pc sc_eip 133 #define sc_ps sc_efl 134 #define sc_eflags sc_efl 135 136 #endif /* __BSD_VISIBLE */ 137 138 #endif /* !_MACHINE_SIGNAL_H_ */ 139