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 /* 41 * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS. 42 */ 43 struct reg { 44 register_t r_r15; 45 register_t r_r14; 46 register_t r_r13; 47 register_t r_r12; 48 register_t r_r11; 49 register_t r_r10; 50 register_t r_r9; 51 register_t r_r8; 52 register_t r_rdi; 53 register_t r_rsi; 54 register_t r_rbp; 55 register_t r_rbx; 56 register_t r_rdx; 57 register_t r_rcx; 58 register_t r_rax; 59 uint32_t r_trapno; 60 uint16_t r_fs; 61 uint16_t r_gs; 62 uint32_t r_err; 63 uint16_t r_es; 64 uint16_t r_ds; 65 register_t r_rip; 66 register_t r_cs; 67 register_t r_rflags; 68 register_t r_rsp; 69 register_t r_ss; 70 }; 71 72 /* 73 * Register set accessible via /proc/$pid/fpregs. 74 */ 75 struct fpreg { 76 /* 77 * XXX should get struct from fpu.h. Here we give a slightly 78 * simplified struct. This may be too much detail. Perhaps 79 * an array of unsigned longs is best. 80 */ 81 unsigned long fpr_env[4]; 82 unsigned char fpr_acc[8][16]; 83 unsigned char fpr_xacc[16][16]; 84 unsigned long fpr_spare[12]; 85 }; 86 87 /* 88 * Register set accessible via /proc/$pid/dbregs. 89 */ 90 struct dbreg { 91 unsigned long dr[16]; /* debug registers */ 92 /* Index 0-3: debug address registers */ 93 /* Index 4-5: reserved */ 94 /* Index 6: debug status */ 95 /* Index 7: debug control */ 96 /* Index 8-15: reserved */ 97 }; 98 99 #define DBREG_DR7_LOCAL_ENABLE 0x01 100 #define DBREG_DR7_GLOBAL_ENABLE 0x02 101 #define DBREG_DR7_LEN_1 0x00 /* 1 byte length */ 102 #define DBREG_DR7_LEN_2 0x01 103 #define DBREG_DR7_LEN_4 0x03 104 #define DBREG_DR7_LEN_8 0x02 105 #define DBREG_DR7_EXEC 0x00 /* break on execute */ 106 #define DBREG_DR7_WRONLY 0x01 /* break on write */ 107 #define DBREG_DR7_RDWR 0x03 /* break on read or write */ 108 #define DBREG_DR7_MASK(i) ((u_long)0xf << ((i) * 4 + 16) | 0x3 << (i) * 2) 109 #define DBREG_DR7_SET(i, len, access, enable) \ 110 ((u_long)((len) << 2 | (access)) << ((i) * 4 + 16) | (enable) << (i) * 2) 111 #define DBREG_DR7_GD 0x2000 112 #define DBREG_DR7_ENABLED(d, i) (((d) & 0x3 << (i) * 2) != 0) 113 #define DBREG_DR7_ACCESS(d, i) ((d) >> ((i) * 4 + 16) & 0x3) 114 #define DBREG_DR7_LEN(d, i) ((d) >> ((i) * 4 + 18) & 0x3) 115 116 #define DBREG_DRX(d,x) ((d)->dr[(x)]) /* reference dr0 - dr15 by 117 register number */ 118 119 #ifdef _KERNEL 120 /* 121 * XXX these interfaces are MI, so they should be declared in a MI place. 122 */ 123 int fill_regs(struct thread *, struct reg *); 124 int set_regs(struct thread *, struct reg *); 125 int fill_fpregs(struct thread *, struct fpreg *); 126 int set_fpregs(struct thread *, struct fpreg *); 127 int fill_dbregs(struct thread *, struct dbreg *); 128 int set_dbregs(struct thread *, struct dbreg *); 129 #endif 130 131 #endif /* !_MACHINE_REG_H_ */ 132