1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * from: @(#)reg.h 5.5 (Berkeley) 1/18/91 33 * $FreeBSD$ 34 */ 35 36#ifndef _MACHINE_REG_H_ 37#define _MACHINE_REG_H_ 38 39/* 40 * Indices for registers in `struct trapframe' and `struct regs'. 41 * 42 * This interface is deprecated. In the kernel, it is only used in FPU 43 * emulators to convert from register numbers encoded in instructions to 44 * register values. Everything else just accesses the relevant struct 45 * members. In userland, debuggers tend to abuse this interface since 46 * they don't understand that `struct regs' is a struct. I hope they have 47 * stopped accessing the registers in the trap frame via PT_{READ,WRITE}_U 48 * and we can stop supporting the user area soon. 49 */ 50#define tFS (0) 51#define tES (1) 52#define tDS (2) 53#define tEDI (3) 54#define tESI (4) 55#define tEBP (5) 56#define tISP (6) 57#define tEBX (7) 58#define tEDX (8) 59#define tECX (9) 60#define tEAX (10) 61#define tERR (12) 62#define tEIP (13) 63#define tCS (14) 64#define tEFLAGS (15) 65#define tESP (16) 66#define tSS (17) 67 68/* 69 * Indices for registers in `struct regs' only. 70 * 71 * Some registers live in the pcb and are only in an "array" with the 72 * other registers in application interfaces that copy all the registers 73 * to or from a `struct regs'. 74 */ 75#define tGS (18) 76 77/* 78 * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS. 79 */ 80struct reg { 81 unsigned int r_fs; 82 unsigned int r_es; 83 unsigned int r_ds; 84 unsigned int r_edi; 85 unsigned int r_esi; 86 unsigned int r_ebp; 87 unsigned int r_isp; 88 unsigned int r_ebx; 89 unsigned int r_edx; 90 unsigned int r_ecx; 91 unsigned int r_eax; 92 unsigned int r_trapno; 93 unsigned int r_err; 94 unsigned int r_eip; 95 unsigned int r_cs; 96 unsigned int r_eflags; 97 unsigned int r_esp; 98 unsigned int r_ss; 99 unsigned int r_gs; 100}; 101 102/* 103 * Register set accessible via /proc/$pid/fpregs. 104 */ 105struct fpreg { 106 /* 107 * XXX should get struct from npx.h. Here we give a slightly 108 * simplified struct. This may be too much detail. Perhaps 109 * an array of unsigned longs is best. 110 */ 111 unsigned long fpr_env[7]; 112 unsigned char fpr_acc[8][10]; 113 unsigned long fpr_ex_sw; 114 unsigned char fpr_pad[64]; 115}; 116 117struct xmmreg { 118 /* 119 * XXX should get struct from npx.h. Here we give a slightly 120 * simplified struct. This may be too much detail. Perhaps 121 * an array of unsigned longs is best. 122 */ 123 unsigned long xmm_env[8]; 124 unsigned char xmm_acc[8][16]; 125 unsigned char xmm_reg[8][16]; 126 unsigned char xmm_pad[224]; 127}; 128 129/* 130 * Register set accessible via /proc/$pid/dbregs. 131 */ 132struct dbreg { 133 unsigned int dr[8]; /* debug registers */ 134 /* Index 0-3: debug address registers */ 135 /* Index 4-5: reserved */ 136 /* Index 6: debug status */ 137 /* Index 7: debug control */ 138}; 139 140#define DBREG_DR7_LOCAL_ENABLE 0x01 141#define DBREG_DR7_GLOBAL_ENABLE 0x02 142#define DBREG_DR7_LEN_1 0x00 /* 1 byte length */ 143#define DBREG_DR7_LEN_2 0x01 144#define DBREG_DR7_LEN_4 0x03 145#define DBREG_DR7_EXEC 0x00 /* break on execute */ 146#define DBREG_DR7_WRONLY 0x01 /* break on write */ 147#define DBREG_DR7_RDWR 0x03 /* break on read or write */ 148#define DBREG_DR7_MASK(i) (0xf << ((i) * 4 + 16) | 0x3 << (i) * 2) 149#define DBREG_DR7_SET(i, len, access, enable) \ 150 (((len) << 2 | (access)) << ((i) * 4 + 16) | (enable) << (i) * 2) 151#define DBREG_DR7_GD 0x2000 152#define DBREG_DR7_ENABLED(d, i) (((d) & 0x3 << (i) * 2) != 0) 153#define DBREG_DR7_ACCESS(d, i) ((d) >> ((i) * 4 + 16) & 0x3) 154#define DBREG_DR7_LEN(d, i) ((d) >> ((i) * 4 + 18) & 0x3) 155 156#define DBREG_DRX(d,x) ((d)->dr[(x)]) /* reference dr0 - dr7 by 157 register number */ 158 159#ifdef _KERNEL 160/* 161 * XXX these interfaces are MI, so they should be declared in a MI place. 162 */ 163int fill_regs(struct thread *, struct reg *); 164int fill_frame_regs(struct trapframe *, struct reg *); 165int set_regs(struct thread *, struct reg *); 166int fill_fpregs(struct thread *, struct fpreg *); 167int set_fpregs(struct thread *, struct fpreg *); 168int fill_dbregs(struct thread *, struct dbreg *); 169int set_dbregs(struct thread *, struct dbreg *); 170#endif 171 172#endif /* !_MACHINE_REG_H_ */ 173