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/$pid/regs and PT_{SET,GET}REGS. 79 */ 80 struct reg { 81 unsigned int r_fs; 82 unsigned int r_es; 83 unsigned int r_ds; 84 unsigned int r_edi; 85 unsigned int r_esi; 86 unsigned int r_ebp; 87 unsigned int r_isp; 88 unsigned int r_ebx; 89 unsigned int r_edx; 90 unsigned int r_ecx; 91 unsigned int r_eax; 92 unsigned int r_trapno; 93 unsigned int r_err; 94 unsigned int r_eip; 95 unsigned int r_cs; 96 unsigned int r_eflags; 97 unsigned int r_esp; 98 unsigned int r_ss; 99 unsigned int r_gs; 100 }; 101 102 /* 103 * Register set accessible via /proc/$pid/fpregs. 104 */ 105 struct 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 }; 116 117 /* 118 * Register set accessible via /proc/$pid/dbregs. 119 */ 120 struct dbreg { 121 unsigned int dr[8]; /* debug registers */ 122 /* Index 0-3: debug address registers */ 123 /* Index 4-5: reserved */ 124 /* Index 6: debug status */ 125 /* Index 7: debug control */ 126 }; 127 128 #define DBREG_DR7_EXEC 0x00 /* break on execute */ 129 #define DBREG_DR7_WRONLY 0x01 /* break on write */ 130 #define DBREG_DR7_RDWR 0x03 /* break on read or write */ 131 #define DBREG_DRX(d,x) ((d)->dr[(x)]) /* reference dr0 - dr7 by 132 register number */ 133 134 135 #ifdef _KERNEL 136 /* 137 * XXX these interfaces are MI, so they should be declared in a MI place. 138 */ 139 int fill_regs(struct thread *, struct reg *); 140 int set_regs(struct thread *, struct reg *); 141 int fill_fpregs(struct thread *, struct fpreg *); 142 int set_fpregs(struct thread *, struct fpreg *); 143 int fill_dbregs(struct thread *, struct dbreg *); 144 int set_dbregs(struct thread *, struct dbreg *); 145 #endif 146 147 #endif /* !_MACHINE_REG_H_ */ 148