1 /* $NetBSD: reg.h,v 1.22 2019/05/18 17:41:34 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)reg.h 5.5 (Berkeley) 1/18/91 35 */ 36 37 #ifndef _I386_REG_H_ 38 #define _I386_REG_H_ 39 40 #include <x86/fpu.h> 41 #include <machine/frame.h> 42 43 /* 44 * Location of the users' stored 45 * registers within appropriate frame of 'trap' and 'syscall', relative to 46 * base of stack frame. 47 * 48 * XXX these should be nuked. They used to be used in the NetBSD/i386 bits 49 * of gdb, but no more. 50 */ 51 52 /* When referenced during a trap/exception, registers are at these offsets */ 53 54 #define tES (offsetof(struct trapframe, tf_es) / sizeof (int)) 55 #define tDS (offsetof(struct trapframe, tf_ds) / sizeof (int)) 56 #define tEDI (offsetof(struct trapframe, tf_edi) / sizeof (int)) 57 #define tESI (offsetof(struct trapframe, tf_esi) / sizeof (int)) 58 #define tEBP (offsetof(struct trapframe, tf_ebp) / sizeof (int)) 59 #define tEBX (offsetof(struct trapframe, tf_ebx) / sizeof (int)) 60 #define tEDX (offsetof(struct trapframe, tf_edx) / sizeof (int)) 61 #define tECX (offsetof(struct trapframe, tf_ecx) / sizeof (int)) 62 #define tEAX (offsetof(struct trapframe, tf_eax) / sizeof (int)) 63 64 #define tEIP (offsetof(struct trapframe, tf_eip) / sizeof (int)) 65 #define tCS (offsetof(struct trapframe, tf_cs) / sizeof (int)) 66 #define tEFLAGS (offsetof(struct trapframe, tf_eflags) / sizeof (int)) 67 #define tESP (offsetof(struct trapframe, tf_esp) / sizeof (int)) 68 #define tSS (offsetof(struct trapframe, tf_ss) / sizeof (int)) 69 70 /* 71 * Registers accessible to ptrace(2) syscall for debugger 72 * The machine-dependent code for PT_{SET,GET}REGS needs to 73 * use whichver order, defined above, is correct, so that it 74 * is all invisible to the user. 75 */ 76 struct reg { 77 int r_eax; 78 int r_ecx; 79 int r_edx; 80 int r_ebx; 81 int r_esp; 82 int r_ebp; 83 int r_esi; 84 int r_edi; 85 int r_eip; 86 int r_eflags; 87 int r_cs; 88 int r_ss; 89 int r_ds; 90 int r_es; 91 int r_fs; 92 int r_gs; 93 }; 94 95 struct fpreg { 96 struct save87 fstate; 97 }; 98 __CTASSERT_NOLINT(sizeof(struct fpreg) == 108); 99 100 struct xmmregs { 101 struct fxsave fxstate; 102 }; 103 __CTASSERT(sizeof(struct xmmregs) == 512); 104 105 /* 106 * Debug Registers 107 * 108 * DR0-DR3 Debug Address Registers 109 * DR4-DR5 Reserved 110 * DR6 Debug Status Register 111 * DR7 Debug Control Register 112 */ 113 struct dbreg { 114 int dr[8]; 115 }; 116 117 #endif /* !_I386_REG_H_ */ 118