1 /* $NetBSD: frame.h,v 1.41 2021/12/26 16:08:20 andvar Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1990 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * William Jolitz. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)frame.h 5.2 (Berkeley) 1/18/91 64 */ 65 66 #ifndef _I386_FRAME_H_ 67 #define _I386_FRAME_H_ 68 69 #include <sys/signal.h> 70 71 /* 72 * System stack frames. 73 */ 74 75 /* 76 * Exception/Trap Stack Frame 77 */ 78 struct trapframe { 79 uint16_t tf_gs; 80 uint16_t tf_gs_pad; 81 uint16_t tf_fs; 82 uint16_t tf_fs_pad; 83 uint16_t tf_es; 84 uint16_t tf_es_pad; 85 uint16_t tf_ds; 86 uint16_t tf_ds_pad; 87 int tf_edi; 88 int tf_esi; 89 int tf_ebp; 90 int tf_ebx; 91 int tf_edx; 92 int tf_ecx; 93 int tf_eax; 94 int tf_trapno; 95 /* below portion defined in 386 hardware */ 96 int tf_err; 97 int tf_eip; 98 int tf_cs; 99 int tf_eflags; 100 /* below used when transitting rings (e.g. user to kernel) */ 101 int tf_esp; 102 int tf_ss; 103 }; 104 105 /* 106 * Interrupt stack frame 107 */ 108 struct intrframe { 109 int if_ppl; 110 int if_gs; 111 int if_fs; 112 int if_es; 113 int if_ds; 114 int if_edi; 115 int if_esi; 116 int if_ebp; 117 int if_ebx; 118 int if_edx; 119 int if_ecx; 120 int if_eax; 121 uint32_t __if_trapno; /* for compat with trap frame - trapno */ 122 uint32_t __if_err; /* for compat with trap frame - err */ 123 /* below portion defined in 386 hardware */ 124 int if_eip; 125 int if_cs; 126 int if_eflags; 127 /* below only when transitting rings (e.g. user to kernel) */ 128 int if_esp; 129 int if_ss; 130 }; 131 132 #ifdef XEN 133 /* 134 * need arch independent way to access ip and cs from intrframe 135 */ 136 #define _INTRFRAME_CS if_cs 137 #define _INTRFRAME_IP if_eip 138 #endif 139 140 /* 141 * Stack frame inside cpu_switchto() 142 */ 143 struct switchframe { 144 int sf_edi; 145 int sf_esi; 146 int sf_ebx; 147 int sf_eip; 148 }; 149 150 #ifdef _KERNEL 151 /* 152 * Old-style signal frame 153 */ 154 struct sigframe_sigcontext { 155 int sf_ra; /* return address for handler */ 156 int sf_signum; /* "signum" argument for handler */ 157 int sf_code; /* "code" argument for handler */ 158 struct sigcontext *sf_scp; /* "scp" argument for handler */ 159 struct sigcontext sf_sc; /* actual saved context */ 160 }; 161 #endif 162 163 /* 164 * New-style signal frame 165 */ 166 struct sigframe_siginfo { 167 int sf_ra; /* return address for handler */ 168 int sf_signum; /* "signum" argument for handler */ 169 siginfo_t *sf_sip; /* "sip" argument for handler */ 170 ucontext_t *sf_ucp; /* "ucp" argument for handler */ 171 siginfo_t sf_si; /* actual saved siginfo */ 172 ucontext_t sf_uc; /* actual saved ucontext */ 173 }; 174 175 #ifdef _KERNEL 176 void *getframe(struct lwp *, int, int *); 177 void buildcontext(struct lwp *, int, void *, void *); 178 void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *); 179 #define lwp_trapframe(l) ((l)->l_md.md_regs) 180 #endif 181 182 #endif /* _I386_FRAME_H_ */ 183