1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2003 Peter Wemm. 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: @(#)frame.h 5.2 (Berkeley) 1/18/91 36 * $FreeBSD$ 37 */ 38 39 #ifndef _MACHINE_FRAME_H_ 40 #define _MACHINE_FRAME_H_ 1 41 42 /* 43 * System stack frames. 44 */ 45 46 #ifdef __i386__ 47 /* 48 * Exception/Trap Stack Frame 49 */ 50 51 struct trapframe { 52 int tf_fs; 53 int tf_es; 54 int tf_ds; 55 int tf_edi; 56 int tf_esi; 57 int tf_ebp; 58 int tf_isp; 59 int tf_ebx; 60 int tf_edx; 61 int tf_ecx; 62 int tf_eax; 63 int tf_trapno; 64 /* below portion defined in 386 hardware */ 65 int tf_err; 66 int tf_eip; 67 int tf_cs; 68 int tf_eflags; 69 /* below only when crossing rings (user to kernel) */ 70 int tf_esp; 71 int tf_ss; 72 }; 73 74 /* Superset of trap frame, for traps from virtual-8086 mode */ 75 76 struct trapframe_vm86 { 77 int tf_fs; 78 int tf_es; 79 int tf_ds; 80 int tf_edi; 81 int tf_esi; 82 int tf_ebp; 83 int tf_isp; 84 int tf_ebx; 85 int tf_edx; 86 int tf_ecx; 87 int tf_eax; 88 int tf_trapno; 89 /* below portion defined in 386 hardware */ 90 int tf_err; 91 int tf_eip; 92 int tf_cs; 93 int tf_eflags; 94 /* below only when crossing rings (user (including vm86) to kernel) */ 95 int tf_esp; 96 int tf_ss; 97 /* below only when crossing from vm86 mode to kernel */ 98 int tf_vm86_es; 99 int tf_vm86_ds; 100 int tf_vm86_fs; 101 int tf_vm86_gs; 102 }; 103 104 /* 105 * This alias for the MI TRAPF_USERMODE() should be used when we don't 106 * care about user mode itself, but need to know if a frame has stack 107 * registers. The difference is only logical, but on i386 the logic 108 * for using TRAPF_USERMODE() is complicated by sometimes treating vm86 109 * bioscall mode (which is a special ring 3 user mode) as kernel mode. 110 */ 111 #define TF_HAS_STACKREGS(tf) TRAPF_USERMODE(tf) 112 #endif /* __i386__ */ 113 114 #ifdef __amd64__ 115 /* 116 * Exception/Trap Stack Frame 117 * 118 * The ordering of this is specifically so that we can take first 6 119 * the syscall arguments directly from the beginning of the frame. 120 */ 121 122 struct trapframe { 123 register_t tf_rdi; 124 register_t tf_rsi; 125 register_t tf_rdx; 126 register_t tf_rcx; 127 register_t tf_r8; 128 register_t tf_r9; 129 register_t tf_rax; 130 register_t tf_rbx; 131 register_t tf_rbp; 132 register_t tf_r10; 133 register_t tf_r11; 134 register_t tf_r12; 135 register_t tf_r13; 136 register_t tf_r14; 137 register_t tf_r15; 138 uint32_t tf_trapno; 139 uint16_t tf_fs; 140 uint16_t tf_gs; 141 register_t tf_addr; 142 uint32_t tf_flags; 143 uint16_t tf_es; 144 uint16_t tf_ds; 145 /* below portion defined in hardware */ 146 register_t tf_err; 147 register_t tf_rip; 148 register_t tf_cs; 149 register_t tf_rflags; 150 /* the amd64 frame always has the stack registers */ 151 register_t tf_rsp; 152 register_t tf_ss; 153 }; 154 155 #define TF_HASSEGS 0x1 156 #define TF_HASBASES 0x2 157 #define TF_HASFPXSTATE 0x4 158 #endif /* __amd64__ */ 159 160 #endif /* _MACHINE_FRAME_H_ */ 161