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 36 #ifndef _MACHINE_FRAME_H_ 37 #define _MACHINE_FRAME_H_ 1 38 39 /* 40 * System stack frames. 41 */ 42 43 #ifdef __i386__ 44 /* 45 * Exception/Trap Stack Frame 46 */ 47 48 struct trapframe { 49 int tf_fs; 50 int tf_es; 51 int tf_ds; 52 int tf_edi; 53 int tf_esi; 54 int tf_ebp; 55 int tf_isp; 56 int tf_ebx; 57 int tf_edx; 58 int tf_ecx; 59 int tf_eax; 60 int tf_trapno; 61 /* below portion defined in 386 hardware */ 62 int tf_err; 63 int tf_eip; 64 int tf_cs; 65 int tf_eflags; 66 /* below only when crossing rings (user to kernel) */ 67 int tf_esp; 68 int tf_ss; 69 }; 70 71 /* Superset of trap frame, for traps from virtual-8086 mode */ 72 73 struct trapframe_vm86 { 74 int tf_fs; 75 int tf_es; 76 int tf_ds; 77 int tf_edi; 78 int tf_esi; 79 int tf_ebp; 80 int tf_isp; 81 int tf_ebx; 82 int tf_edx; 83 int tf_ecx; 84 int tf_eax; 85 int tf_trapno; 86 /* below portion defined in 386 hardware */ 87 int tf_err; 88 int tf_eip; 89 int tf_cs; 90 int tf_eflags; 91 /* below only when crossing rings (user (including vm86) to kernel) */ 92 int tf_esp; 93 int tf_ss; 94 /* below only when crossing from vm86 mode to kernel */ 95 int tf_vm86_es; 96 int tf_vm86_ds; 97 int tf_vm86_fs; 98 int tf_vm86_gs; 99 }; 100 101 /* 102 * This alias for the MI TRAPF_USERMODE() should be used when we don't 103 * care about user mode itself, but need to know if a frame has stack 104 * registers. The difference is only logical, but on i386 the logic 105 * for using TRAPF_USERMODE() is complicated by sometimes treating vm86 106 * bioscall mode (which is a special ring 3 user mode) as kernel mode. 107 */ 108 #define TF_HAS_STACKREGS(tf) TRAPF_USERMODE(tf) 109 #endif /* __i386__ */ 110 111 #ifdef __amd64__ 112 /* 113 * Exception/Trap Stack Frame 114 * 115 * The ordering of this is specifically so that we can take first 6 116 * the syscall arguments directly from the beginning of the frame. 117 */ 118 119 struct trapframe { 120 register_t tf_rdi; 121 register_t tf_rsi; 122 register_t tf_rdx; 123 register_t tf_rcx; 124 register_t tf_r8; 125 register_t tf_r9; 126 register_t tf_rax; 127 register_t tf_rbx; 128 register_t tf_rbp; 129 register_t tf_r10; 130 register_t tf_r11; 131 register_t tf_r12; 132 register_t tf_r13; 133 register_t tf_r14; 134 register_t tf_r15; 135 uint32_t tf_trapno; 136 uint16_t tf_fs; 137 uint16_t tf_gs; 138 register_t tf_addr; 139 uint32_t tf_flags; 140 uint16_t tf_es; 141 uint16_t tf_ds; 142 /* below portion defined in hardware */ 143 register_t tf_err; 144 register_t tf_rip; 145 register_t tf_cs; 146 register_t tf_rflags; 147 /* the amd64 frame always has the stack registers */ 148 register_t tf_rsp; 149 register_t tf_ss; 150 }; 151 152 #define TF_HASSEGS 0x1 153 #define TF_HASBASES 0x2 154 #define TF_HASFPXSTATE 0x4 155 #endif /* __amd64__ */ 156 157 #endif /* _MACHINE_FRAME_H_ */ 158