1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1999 Marcel Moolenaar 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 * in this position and unchanged. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef _MACHINE_SIGFRAME_H_ 34 #define _MACHINE_SIGFRAME_H_ 35 36 /* 37 * Signal frames, arguments passed to application signal handlers. 38 */ 39 #ifdef _KERNEL 40 #ifdef COMPAT_43 41 struct osigframe { 42 /* 43 * The first four members may be used by applications. 44 */ 45 46 register_t sf_signum; 47 48 /* 49 * Either 'int' for old-style FreeBSD handler or 'siginfo_t *' 50 * pointing to sf_siginfo for SA_SIGINFO handlers. 51 */ 52 register_t sf_arg2; 53 54 /* Points to sf_siginfo.si_sc. */ 55 register_t sf_scp; 56 57 register_t sf_addr; 58 59 /* 60 * The following arguments are not constrained by the 61 * function call protocol. 62 * Applications are not supposed to access these members, 63 * except using the pointers we provide in the first three 64 * arguments. 65 */ 66 67 union { 68 __osiginfohandler_t *sf_action; 69 __sighandler_t *sf_handler; 70 } sf_ahu; 71 72 /* In the SA_SIGINFO case, sf_arg2 points here. */ 73 osiginfo_t sf_siginfo; 74 }; 75 #endif 76 #ifdef COMPAT_FREEBSD4 77 /* FreeBSD 4.x */ 78 struct freebsd4_sigframe { 79 register_t sf_signum; 80 register_t sf_siginfo; /* code or pointer to sf_si */ 81 register_t sf_ucontext; /* points to sf_uc */ 82 register_t sf_addr; /* undocumented 4th arg */ 83 84 union { 85 __siginfohandler_t *sf_action; 86 __sighandler_t *sf_handler; 87 } sf_ahu; 88 struct freebsd4_ucontext sf_uc; /* = *sf_ucontext */ 89 siginfo_t sf_si; /* = *sf_siginfo (SA_SIGINFO case) */ 90 }; 91 #endif 92 #endif 93 94 #include <x86/sigframe.h> 95 96 #endif /* !_MACHINE_SIGFRAME_H_ */ 97