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: @(#)reg.h 5.5 (Berkeley) 1/18/91 36 */ 37 38 #ifndef _MACHINE_REG_H_ 39 #define _MACHINE_REG_H_ 40 41 #include <sys/_types.h> 42 43 #ifdef __i386__ 44 /* 45 * Indices for registers in `struct trapframe' and `struct regs'. 46 * 47 * This interface is deprecated. In the kernel, it is only used in FPU 48 * emulators to convert from register numbers encoded in instructions to 49 * register values. Everything else just accesses the relevant struct 50 * members. In userland, debuggers tend to abuse this interface since 51 * they don't understand that `struct regs' is a struct. I hope they have 52 * stopped accessing the registers in the trap frame via PT_{READ,WRITE}_U 53 * and we can stop supporting the user area soon. 54 */ 55 #define tFS (0) 56 #define tES (1) 57 #define tDS (2) 58 #define tEDI (3) 59 #define tESI (4) 60 #define tEBP (5) 61 #define tISP (6) 62 #define tEBX (7) 63 #define tEDX (8) 64 #define tECX (9) 65 #define tEAX (10) 66 #define tERR (12) 67 #define tEIP (13) 68 #define tCS (14) 69 #define tEFLAGS (15) 70 #define tESP (16) 71 #define tSS (17) 72 73 /* 74 * Indices for registers in `struct regs' only. 75 * 76 * Some registers live in the pcb and are only in an "array" with the 77 * other registers in application interfaces that copy all the registers 78 * to or from a `struct regs'. 79 */ 80 #define tGS (18) 81 #endif /* __i386__ */ 82 83 /* Rename the structs below depending on the machine architecture. */ 84 #ifdef __i386__ 85 #define __reg32 reg 86 #define __fpreg32 fpreg 87 #define __dbreg32 dbreg 88 #define __segbasereg32 segbasereg 89 #else 90 #define __reg32 reg32 91 #define __reg64 reg 92 #define __fpreg32 fpreg32 93 #define __fpreg64 fpreg 94 #define __dbreg32 dbreg32 95 #define __dbreg64 dbreg 96 #define __segbasereg32 segbasereg32 97 #define __segbasereg64 segbasereg 98 #define __HAVE_REG32 99 #endif 100 101 /* 102 * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS. 103 */ 104 struct __reg32 { 105 __uint32_t r_fs; 106 __uint32_t r_es; 107 __uint32_t r_ds; 108 __uint32_t r_edi; 109 __uint32_t r_esi; 110 __uint32_t r_ebp; 111 __uint32_t r_isp; 112 __uint32_t r_ebx; 113 __uint32_t r_edx; 114 __uint32_t r_ecx; 115 __uint32_t r_eax; 116 __uint32_t r_trapno; 117 __uint32_t r_err; 118 __uint32_t r_eip; 119 __uint32_t r_cs; 120 __uint32_t r_eflags; 121 __uint32_t r_esp; 122 __uint32_t r_ss; 123 __uint32_t r_gs; 124 }; 125 126 struct __reg64 { 127 __int64_t r_r15; 128 __int64_t r_r14; 129 __int64_t r_r13; 130 __int64_t r_r12; 131 __int64_t r_r11; 132 __int64_t r_r10; 133 __int64_t r_r9; 134 __int64_t r_r8; 135 __int64_t r_rdi; 136 __int64_t r_rsi; 137 __int64_t r_rbp; 138 __int64_t r_rbx; 139 __int64_t r_rdx; 140 __int64_t r_rcx; 141 __int64_t r_rax; 142 __uint32_t r_trapno; 143 __uint16_t r_fs; 144 __uint16_t r_gs; 145 __uint32_t r_err; 146 __uint16_t r_es; 147 __uint16_t r_ds; 148 __int64_t r_rip; 149 __int64_t r_cs; 150 __int64_t r_rflags; 151 __int64_t r_rsp; 152 __int64_t r_ss; 153 }; 154 155 /* 156 * Register set accessible via /proc/$pid/fpregs. 157 * 158 * XXX should get struct from fpu.h. Here we give a slightly 159 * simplified struct. This may be too much detail. Perhaps 160 * an array of unsigned longs is best. 161 */ 162 struct __fpreg32 { 163 __uint32_t fpr_env[7]; 164 __uint8_t fpr_acc[8][10]; 165 __uint32_t fpr_ex_sw; 166 __uint8_t fpr_pad[64]; 167 }; 168 169 struct __fpreg64 { 170 __uint64_t fpr_env[4]; 171 __uint8_t fpr_acc[8][16]; 172 __uint8_t fpr_xacc[16][16]; 173 __uint64_t fpr_spare[12]; 174 }; 175 176 /* 177 * Register set accessible via PT_GETXMMREGS (i386). 178 */ 179 struct xmmreg { 180 /* 181 * XXX should get struct from npx.h. Here we give a slightly 182 * simplified struct. This may be too much detail. Perhaps 183 * an array of unsigned longs is best. 184 */ 185 __uint32_t xmm_env[8]; 186 __uint8_t xmm_acc[8][16]; 187 __uint8_t xmm_reg[8][16]; 188 __uint8_t xmm_pad[224]; 189 }; 190 191 /* 192 * Register set accessible via /proc/$pid/dbregs. 193 */ 194 struct __dbreg32 { 195 __uint32_t dr[8]; /* debug registers */ 196 /* Index 0-3: debug address registers */ 197 /* Index 4-5: reserved */ 198 /* Index 6: debug status */ 199 /* Index 7: debug control */ 200 }; 201 202 struct __dbreg64 { 203 __uint64_t dr[16]; /* debug registers */ 204 /* Index 0-3: debug address registers */ 205 /* Index 4-5: reserved */ 206 /* Index 6: debug status */ 207 /* Index 7: debug control */ 208 /* Index 8-15: reserved */ 209 }; 210 211 #define DBREG_DR6_RESERVED1 0xffff0ff0 212 #define DBREG_DR6_BMASK 0x000f 213 #define DBREG_DR6_B(i) (1 << (i)) 214 #define DBREG_DR6_BD 0x2000 215 #define DBREG_DR6_BS 0x4000 216 #define DBREG_DR6_BT 0x8000 217 218 #define DBREG_DR7_RESERVED1 0x0400 219 #define DBREG_DR7_LOCAL_ENABLE 0x01 220 #define DBREG_DR7_GLOBAL_ENABLE 0x02 221 #define DBREG_DR7_LEN_1 0x00 /* 1 byte length */ 222 #define DBREG_DR7_LEN_2 0x01 223 #define DBREG_DR7_LEN_4 0x03 224 #define DBREG_DR7_LEN_8 0x02 225 #define DBREG_DR7_EXEC 0x00 /* break on execute */ 226 #define DBREG_DR7_WRONLY 0x01 /* break on write */ 227 #define DBREG_DR7_RDWR 0x03 /* break on read or write */ 228 #define DBREG_DR7_MASK(i) \ 229 ((__u_register_t)(0xf) << ((i) * 4 + 16) | 0x3 << (i) * 2) 230 #define DBREG_DR7_SET(i, len, access, enable) \ 231 ((__u_register_t)((len) << 2 | (access)) << ((i) * 4 + 16) | \ 232 (enable) << (i) * 2) 233 #define DBREG_DR7_GD 0x2000 234 #define DBREG_DR7_ENABLED(d, i) (((d) & 0x3 << (i) * 2) != 0) 235 #define DBREG_DR7_ACCESS(d, i) ((d) >> ((i) * 4 + 16) & 0x3) 236 #define DBREG_DR7_LEN(d, i) ((d) >> ((i) * 4 + 18) & 0x3) 237 238 #define DBREG_DRX(d,x) ((d)->dr[(x)]) /* reference dr0 - dr7 by 239 register number */ 240 241 /* 242 * Register set accessible via NT_X86_SEGBASES. 243 */ 244 struct __segbasereg32 { 245 __uint32_t r_fsbase; 246 __uint32_t r_gsbase; 247 }; 248 249 struct __segbasereg64 { 250 __uint64_t r_fsbase; 251 __uint64_t r_gsbase; 252 }; 253 254 #undef __reg32 255 #undef __reg64 256 #undef __fpreg32 257 #undef __fpreg64 258 #undef __dbreg32 259 #undef __dbreg64 260 #undef __segbasereg32 261 #undef __segbasereg64 262 263 #ifdef _KERNEL 264 /* 265 * XXX these interfaces are MI, so they should be declared in a MI place. 266 */ 267 int fill_frame_regs(struct trapframe *, struct reg *); 268 #endif 269 270 #endif /* !_MACHINE_REG_H_ */ 271