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 31 #ifndef _X86_SIGFRAME_H_ 32 #define _X86_SIGFRAME_H_ 33 34 /* 35 * Signal frames, arguments passed to application signal handlers. 36 */ 37 38 #ifdef __i386__ 39 struct sigframe { 40 /* 41 * The first four members may be used by applications. 42 * 43 * NOTE: The 4th argument is undocumented, ill commented 44 * on and seems to be somewhat BSD "standard". Handlers 45 * installed with sigvec may be using it. 46 */ 47 register_t sf_signum; 48 register_t sf_siginfo; /* code or pointer to sf_si */ 49 register_t sf_ucontext; /* points to sf_uc */ 50 register_t sf_addr; /* undocumented 4th arg */ 51 52 union { 53 __siginfohandler_t *sf_action; 54 __sighandler_t *sf_handler; 55 } sf_ahu; 56 ucontext_t sf_uc; /* = *sf_ucontext */ 57 siginfo_t sf_si; /* = *sf_siginfo (SA_SIGINFO case) */ 58 }; 59 #endif /* __i386__ */ 60 61 #ifdef __amd64__ 62 struct sigframe { 63 union { 64 __siginfohandler_t *sf_action; 65 __sighandler_t *sf_handler; 66 } sf_ahu; 67 ucontext_t sf_uc; /* = *sf_ucontext */ 68 siginfo_t sf_si; /* = *sf_siginfo (SA_SIGINFO case) */ 69 }; 70 #endif /* __amd64__ */ 71 72 #endif /* _X86_SIGFRAME_H_ */ 73