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 * $FreeBSD$ 37 */ 38 39 #ifndef _MACHINE_REG_H_ 40 #define _MACHINE_REG_H_ 41 42 #include <machine/_types.h> 43 44 #ifdef __i386__ 45 /* 46 * Indices for registers in `struct trapframe' and `struct regs'. 47 * 48 * This interface is deprecated. In the kernel, it is only used in FPU 49 * emulators to convert from register numbers encoded in instructions to 50 * register values. Everything else just accesses the relevant struct 51 * members. In userland, debuggers tend to abuse this interface since 52 * they don't understand that `struct regs' is a struct. I hope they have 53 * stopped accessing the registers in the trap frame via PT_{READ,WRITE}_U 54 * and we can stop supporting the user area soon. 55 */ 56 #define tFS (0) 57 #define tES (1) 58 #define tDS (2) 59 #define tEDI (3) 60 #define tESI (4) 61 #define tEBP (5) 62 #define tISP (6) 63 #define tEBX (7) 64 #define tEDX (8) 65 #define tECX (9) 66 #define tEAX (10) 67 #define tERR (12) 68 #define tEIP (13) 69 #define tCS (14) 70 #define tEFLAGS (15) 71 #define tESP (16) 72 #define tSS (17) 73 74 /* 75 * Indices for registers in `struct regs' only. 76 * 77 * Some registers live in the pcb and are only in an "array" with the 78 * other registers in application interfaces that copy all the registers 79 * to or from a `struct regs'. 80 */ 81 #define tGS (18) 82 #endif /* __i386__ */ 83 84 /* Rename the structs below depending on the machine architecture. */ 85 #ifdef __i386__ 86 #define __reg32 reg 87 #define __fpreg32 fpreg 88 #define __dbreg32 dbreg 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 __HAVE_REG32 97 #endif 98 99 /* 100 * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS. 101 */ 102 struct __reg32 { 103 __uint32_t r_fs; 104 __uint32_t r_es; 105 __uint32_t r_ds; 106 __uint32_t r_edi; 107 __uint32_t r_esi; 108 __uint32_t r_ebp; 109 __uint32_t r_isp; 110 __uint32_t r_ebx; 111 __uint32_t r_edx; 112 __uint32_t r_ecx; 113 __uint32_t r_eax; 114 __uint32_t r_trapno; 115 __uint32_t r_err; 116 __uint32_t r_eip; 117 __uint32_t r_cs; 118 __uint32_t r_eflags; 119 __uint32_t r_esp; 120 __uint32_t r_ss; 121 __uint32_t r_gs; 122 }; 123 124 struct __reg64 { 125 __int64_t r_r15; 126 __int64_t r_r14; 127 __int64_t r_r13; 128 __int64_t r_r12; 129 __int64_t r_r11; 130 __int64_t r_r10; 131 __int64_t r_r9; 132 __int64_t r_r8; 133 __int64_t r_rdi; 134 __int64_t r_rsi; 135 __int64_t r_rbp; 136 __int64_t r_rbx; 137 __int64_t r_rdx; 138 __int64_t r_rcx; 139 __int64_t r_rax; 140 __uint32_t r_trapno; 141 __uint16_t r_fs; 142 __uint16_t r_gs; 143 __uint32_t r_err; 144 __uint16_t r_es; 145 __uint16_t r_ds; 146 __int64_t r_rip; 147 __int64_t r_cs; 148 __int64_t r_rflags; 149 __int64_t r_rsp; 150 __int64_t r_ss; 151 }; 152 153 /* 154 * Register set accessible via /proc/$pid/fpregs. 155 * 156 * XXX should get struct from fpu.h. Here we give a slightly 157 * simplified struct. This may be too much detail. Perhaps 158 * an array of unsigned longs is best. 159 */ 160 struct __fpreg32 { 161 __uint32_t fpr_env[7]; 162 __uint8_t fpr_acc[8][10]; 163 __uint32_t fpr_ex_sw; 164 __uint8_t fpr_pad[64]; 165 }; 166 167 struct __fpreg64 { 168 __uint64_t fpr_env[4]; 169 __uint8_t fpr_acc[8][16]; 170 __uint8_t fpr_xacc[16][16]; 171 __uint64_t fpr_spare[12]; 172 }; 173 174 /* 175 * Register set accessible via PT_GETXMMREGS (i386). 176 */ 177 struct xmmreg { 178 /* 179 * XXX should get struct from npx.h. Here we give a slightly 180 * simplified struct. This may be too much detail. Perhaps 181 * an array of unsigned longs is best. 182 */ 183 __uint32_t xmm_env[8]; 184 __uint8_t xmm_acc[8][16]; 185 __uint8_t xmm_reg[8][16]; 186 __uint8_t xmm_pad[224]; 187 }; 188 189 /* 190 * Register set accessible via /proc/$pid/dbregs. 191 */ 192 struct __dbreg32 { 193 __uint32_t dr[8]; /* debug registers */ 194 /* Index 0-3: debug address registers */ 195 /* Index 4-5: reserved */ 196 /* Index 6: debug status */ 197 /* Index 7: debug control */ 198 }; 199 200 struct __dbreg64 { 201 __uint64_t dr[16]; /* debug registers */ 202 /* Index 0-3: debug address registers */ 203 /* Index 4-5: reserved */ 204 /* Index 6: debug status */ 205 /* Index 7: debug control */ 206 /* Index 8-15: reserved */ 207 }; 208 209 #define DBREG_DR6_RESERVED1 0xffff0ff0 210 #define DBREG_DR6_BMASK 0x000f 211 #define DBREG_DR6_B(i) (1 << (i)) 212 #define DBREG_DR6_BD 0x2000 213 #define DBREG_DR6_BS 0x4000 214 #define DBREG_DR6_BT 0x8000 215 216 #define DBREG_DR7_RESERVED1 0x0400 217 #define DBREG_DR7_LOCAL_ENABLE 0x01 218 #define DBREG_DR7_GLOBAL_ENABLE 0x02 219 #define DBREG_DR7_LEN_1 0x00 /* 1 byte length */ 220 #define DBREG_DR7_LEN_2 0x01 221 #define DBREG_DR7_LEN_4 0x03 222 #define DBREG_DR7_LEN_8 0x02 223 #define DBREG_DR7_EXEC 0x00 /* break on execute */ 224 #define DBREG_DR7_WRONLY 0x01 /* break on write */ 225 #define DBREG_DR7_RDWR 0x03 /* break on read or write */ 226 #define DBREG_DR7_MASK(i) \ 227 ((__u_register_t)(0xf) << ((i) * 4 + 16) | 0x3 << (i) * 2) 228 #define DBREG_DR7_SET(i, len, access, enable) \ 229 ((__u_register_t)((len) << 2 | (access)) << ((i) * 4 + 16) | \ 230 (enable) << (i) * 2) 231 #define DBREG_DR7_GD 0x2000 232 #define DBREG_DR7_ENABLED(d, i) (((d) & 0x3 << (i) * 2) != 0) 233 #define DBREG_DR7_ACCESS(d, i) ((d) >> ((i) * 4 + 16) & 0x3) 234 #define DBREG_DR7_LEN(d, i) ((d) >> ((i) * 4 + 18) & 0x3) 235 236 #define DBREG_DRX(d,x) ((d)->dr[(x)]) /* reference dr0 - dr7 by 237 register number */ 238 239 #undef __reg32 240 #undef __reg64 241 #undef __fpreg32 242 #undef __fpreg64 243 #undef __dbreg32 244 #undef __dbreg64 245 246 #ifdef _KERNEL 247 struct thread; 248 249 /* 250 * XXX these interfaces are MI, so they should be declared in a MI place. 251 */ 252 int fill_regs(struct thread *, struct reg *); 253 int fill_frame_regs(struct trapframe *, struct reg *); 254 int set_regs(struct thread *, struct reg *); 255 int fill_fpregs(struct thread *, struct fpreg *); 256 int set_fpregs(struct thread *, struct fpreg *); 257 int fill_dbregs(struct thread *, struct dbreg *); 258 int set_dbregs(struct thread *, struct dbreg *); 259 #ifdef COMPAT_FREEBSD32 260 int fill_regs32(struct thread *, struct reg32 *); 261 int set_regs32(struct thread *, struct reg32 *); 262 int fill_fpregs32(struct thread *, struct fpreg32 *); 263 int set_fpregs32(struct thread *, struct fpreg32 *); 264 int fill_dbregs32(struct thread *, struct dbreg32 *); 265 int set_dbregs32(struct thread *, struct dbreg32 *); 266 #endif 267 #endif 268 269 #endif /* !_MACHINE_REG_H_ */ 270