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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)reg.h 5.5 (Berkeley) 1/18/91 37 * $FreeBSD$ 38 */ 39 40 #ifndef _MACHINE_REG_H_ 41 #define _MACHINE_REG_H_ 42 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 81 /* 82 * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS. 83 */ 84 struct reg { 85 unsigned int r_fs; 86 unsigned int r_es; 87 unsigned int r_ds; 88 unsigned int r_edi; 89 unsigned int r_esi; 90 unsigned int r_ebp; 91 unsigned int r_isp; 92 unsigned int r_ebx; 93 unsigned int r_edx; 94 unsigned int r_ecx; 95 unsigned int r_eax; 96 unsigned int r_trapno; 97 unsigned int r_err; 98 unsigned int r_eip; 99 unsigned int r_cs; 100 unsigned int r_eflags; 101 unsigned int r_esp; 102 unsigned int r_ss; 103 unsigned int r_gs; 104 }; 105 106 /* 107 * Register set accessible via /proc/$pid/fpregs. 108 */ 109 struct fpreg { 110 /* 111 * XXX should get struct from npx.h. Here we give a slightly 112 * simplified struct. This may be too much detail. Perhaps 113 * an array of unsigned longs is best. 114 */ 115 unsigned long fpr_env[7]; 116 unsigned char fpr_acc[8][10]; 117 unsigned long fpr_ex_sw; 118 unsigned char fpr_pad[64]; 119 }; 120 121 /* 122 * Register set accessible via /proc/$pid/dbregs. 123 */ 124 struct dbreg { 125 unsigned int dr[8]; /* debug registers */ 126 /* Index 0-3: debug address registers */ 127 /* Index 4-5: reserved */ 128 /* Index 6: debug status */ 129 /* Index 7: debug control */ 130 }; 131 132 #define DBREG_DR7_EXEC 0x00 /* break on execute */ 133 #define DBREG_DR7_WRONLY 0x01 /* break on write */ 134 #define DBREG_DR7_RDWR 0x03 /* break on read or write */ 135 #define DBREG_DRX(d,x) (d->dr[(x)]) /* reference dr0 - dr7 by 136 register number */ 137 138 139 #ifdef _KERNEL 140 /* 141 * XXX these interfaces are MI, so they should be declared in a MI place. 142 */ 143 int fill_regs(struct thread *, struct reg *); 144 int set_regs(struct thread *, struct reg *); 145 int fill_fpregs(struct thread *, struct fpreg *); 146 int set_fpregs(struct thread *, struct fpreg *); 147 int fill_dbregs(struct thread *, struct dbreg *); 148 int set_dbregs(struct thread *, struct dbreg *); 149 #endif 150 151 #endif /* !_MACHINE_REG_H_ */ 152