1 /*- 2 * Copyright (c) 2003 Peter Wemm. 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * William Jolitz. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)reg.h 5.5 (Berkeley) 1/18/91 34 * $FreeBSD$ 35 */ 36 37 #ifndef _MACHINE_REG_H_ 38 #define _MACHINE_REG_H_ 39 40 #include <machine/_types.h> 41 42 #ifdef __i386__ 43 /* 44 * Indices for registers in `struct trapframe' and `struct regs'. 45 * 46 * This interface is deprecated. In the kernel, it is only used in FPU 47 * emulators to convert from register numbers encoded in instructions to 48 * register values. Everything else just accesses the relevant struct 49 * members. In userland, debuggers tend to abuse this interface since 50 * they don't understand that `struct regs' is a struct. I hope they have 51 * stopped accessing the registers in the trap frame via PT_{READ,WRITE}_U 52 * and we can stop supporting the user area soon. 53 */ 54 #define tFS (0) 55 #define tES (1) 56 #define tDS (2) 57 #define tEDI (3) 58 #define tESI (4) 59 #define tEBP (5) 60 #define tISP (6) 61 #define tEBX (7) 62 #define tEDX (8) 63 #define tECX (9) 64 #define tEAX (10) 65 #define tERR (12) 66 #define tEIP (13) 67 #define tCS (14) 68 #define tEFLAGS (15) 69 #define tESP (16) 70 #define tSS (17) 71 72 /* 73 * Indices for registers in `struct regs' only. 74 * 75 * Some registers live in the pcb and are only in an "array" with the 76 * other registers in application interfaces that copy all the registers 77 * to or from a `struct regs'. 78 */ 79 #define tGS (18) 80 #endif /* __i386__ */ 81 82 /* Rename the structs below depending on the machine architecture. */ 83 #ifdef __i386__ 84 #define __reg32 reg 85 #define __fpreg32 fpreg 86 #define __dbreg32 dbreg 87 #else 88 #define __reg32 reg32 89 #define __reg64 reg 90 #define __fpreg32 fpreg32 91 #define __fpreg64 fpreg 92 #define __dbreg32 dbreg32 93 #define __dbreg64 dbreg 94 #define __HAVE_REG32 95 #endif 96 97 /* 98 * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS. 99 */ 100 struct __reg32 { 101 __uint32_t r_fs; 102 __uint32_t r_es; 103 __uint32_t r_ds; 104 __uint32_t r_edi; 105 __uint32_t r_esi; 106 __uint32_t r_ebp; 107 __uint32_t r_isp; 108 __uint32_t r_ebx; 109 __uint32_t r_edx; 110 __uint32_t r_ecx; 111 __uint32_t r_eax; 112 __uint32_t r_trapno; 113 __uint32_t r_err; 114 __uint32_t r_eip; 115 __uint32_t r_cs; 116 __uint32_t r_eflags; 117 __uint32_t r_esp; 118 __uint32_t r_ss; 119 __uint32_t r_gs; 120 }; 121 122 struct __reg64 { 123 __int64_t r_r15; 124 __int64_t r_r14; 125 __int64_t r_r13; 126 __int64_t r_r12; 127 __int64_t r_r11; 128 __int64_t r_r10; 129 __int64_t r_r9; 130 __int64_t r_r8; 131 __int64_t r_rdi; 132 __int64_t r_rsi; 133 __int64_t r_rbp; 134 __int64_t r_rbx; 135 __int64_t r_rdx; 136 __int64_t r_rcx; 137 __int64_t r_rax; 138 __uint32_t r_trapno; 139 __uint16_t r_fs; 140 __uint16_t r_gs; 141 __uint32_t r_err; 142 __uint16_t r_es; 143 __uint16_t r_ds; 144 __int64_t r_rip; 145 __int64_t r_cs; 146 __int64_t r_rflags; 147 __int64_t r_rsp; 148 __int64_t r_ss; 149 }; 150 151 /* 152 * Register set accessible via /proc/$pid/fpregs. 153 * 154 * XXX should get struct from fpu.h. Here we give a slightly 155 * simplified struct. This may be too much detail. Perhaps 156 * an array of unsigned longs is best. 157 */ 158 struct __fpreg32 { 159 __uint32_t fpr_env[7]; 160 __uint8_t fpr_acc[8][10]; 161 __uint32_t fpr_ex_sw; 162 __uint8_t fpr_pad[64]; 163 }; 164 165 struct __fpreg64 { 166 __uint64_t fpr_env[4]; 167 __uint8_t fpr_acc[8][16]; 168 __uint8_t fpr_xacc[16][16]; 169 __uint64_t fpr_spare[12]; 170 }; 171 172 /* 173 * Register set accessible via PT_GETXMMREGS (i386). 174 */ 175 struct xmmreg { 176 /* 177 * XXX should get struct from npx.h. Here we give a slightly 178 * simplified struct. This may be too much detail. Perhaps 179 * an array of unsigned longs is best. 180 */ 181 __uint32_t xmm_env[8]; 182 __uint8_t xmm_acc[8][16]; 183 __uint8_t xmm_reg[8][16]; 184 __uint8_t xmm_pad[224]; 185 }; 186 187 /* 188 * Register set accessible via /proc/$pid/dbregs. 189 */ 190 struct __dbreg32 { 191 __uint32_t dr[8]; /* debug registers */ 192 /* Index 0-3: debug address registers */ 193 /* Index 4-5: reserved */ 194 /* Index 6: debug status */ 195 /* Index 7: debug control */ 196 }; 197 198 struct __dbreg64 { 199 __uint64_t dr[16]; /* debug registers */ 200 /* Index 0-3: debug address registers */ 201 /* Index 4-5: reserved */ 202 /* Index 6: debug status */ 203 /* Index 7: debug control */ 204 /* Index 8-15: reserved */ 205 }; 206 207 #define DBREG_DR7_LOCAL_ENABLE 0x01 208 #define DBREG_DR7_GLOBAL_ENABLE 0x02 209 #define DBREG_DR7_LEN_1 0x00 /* 1 byte length */ 210 #define DBREG_DR7_LEN_2 0x01 211 #define DBREG_DR7_LEN_4 0x03 212 #define DBREG_DR7_LEN_8 0x02 213 #define DBREG_DR7_EXEC 0x00 /* break on execute */ 214 #define DBREG_DR7_WRONLY 0x01 /* break on write */ 215 #define DBREG_DR7_RDWR 0x03 /* break on read or write */ 216 #define DBREG_DR7_MASK(i) \ 217 ((__u_register_t)(0xf) << ((i) * 4 + 16) | 0x3 << (i) * 2) 218 #define DBREG_DR7_SET(i, len, access, enable) \ 219 ((__u_register_t)((len) << 2 | (access)) << ((i) * 4 + 16) | \ 220 (enable) << (i) * 2) 221 #define DBREG_DR7_GD 0x2000 222 #define DBREG_DR7_ENABLED(d, i) (((d) & 0x3 << (i) * 2) != 0) 223 #define DBREG_DR7_ACCESS(d, i) ((d) >> ((i) * 4 + 16) & 0x3) 224 #define DBREG_DR7_LEN(d, i) ((d) >> ((i) * 4 + 18) & 0x3) 225 226 #define DBREG_DRX(d,x) ((d)->dr[(x)]) /* reference dr0 - dr7 by 227 register number */ 228 229 #undef __reg32 230 #undef __reg64 231 #undef __fpreg32 232 #undef __fpreg64 233 #undef __dbreg32 234 #undef __dbreg64 235 236 #ifdef _KERNEL 237 /* 238 * XXX these interfaces are MI, so they should be declared in a MI place. 239 */ 240 int fill_regs(struct thread *, struct reg *); 241 int fill_frame_regs(struct trapframe *, struct reg *); 242 int set_regs(struct thread *, struct reg *); 243 int fill_fpregs(struct thread *, struct fpreg *); 244 int set_fpregs(struct thread *, struct fpreg *); 245 int fill_dbregs(struct thread *, struct dbreg *); 246 int set_dbregs(struct thread *, struct dbreg *); 247 #ifdef COMPAT_FREEBSD32 248 int fill_regs32(struct thread *, struct reg32 *); 249 int set_regs32(struct thread *, struct reg32 *); 250 int fill_fpregs32(struct thread *, struct fpreg32 *); 251 int set_fpregs32(struct thread *, struct fpreg32 *); 252 int fill_dbregs32(struct thread *, struct dbreg32 *); 253 int set_dbregs32(struct thread *, struct dbreg32 *); 254 #endif 255 #endif 256 257 #endif /* !_MACHINE_REG_H_ */ 258