master
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 */
76struct 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
95struct fpreg {
96 struct save87 fstate;
97};
98__CTASSERT_NOLINT(sizeof(struct fpreg) == 108);
99
100struct 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 */
113struct dbreg {
114 int dr[8];
115};
116
117#endif /* !_I386_REG_H_ */