reg.h revision 190616 
1/*-
2 * Copyright (c) 2003 Peter Wemm.
3 * Copyright (c) 1990 The Regents of the University of California.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * William Jolitz.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	from: @(#)reg.h	5.5 (Berkeley) 1/18/91
34 * $FreeBSD: head/sys/amd64/include/reg.h 190616 2009-04-01 12:44:17Z kib $
35 */
36
37#ifndef _MACHINE_REG_H_
38#define	_MACHINE_REG_H_
39
40/*
41 * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS.
42 */
43struct reg {
44	register_t	r_r15;
45	register_t	r_r14;
46	register_t	r_r13;
47	register_t	r_r12;
48	register_t	r_r11;
49	register_t	r_r10;
50	register_t	r_r9;
51	register_t	r_r8;
52	register_t	r_rdi;
53	register_t	r_rsi;
54	register_t	r_rbp;
55	register_t	r_rbx;
56	register_t	r_rdx;
57	register_t	r_rcx;
58	register_t	r_rax;
59	uint32_t	r_trapno;
60	uint16_t	r_fs;
61	uint16_t	r_gs;
62	uint32_t	r_err;
63	uint16_t	r_es;
64	uint16_t	r_ds;
65	register_t	r_rip;
66	register_t	r_cs;
67	register_t	r_rflags;
68	register_t	r_rsp;
69	register_t	r_ss;
70};
71
72/*
73 * Register set accessible via /proc/$pid/fpregs.
74 */
75struct fpreg {
76	/*
77	 * XXX should get struct from fpu.h.  Here we give a slightly
78	 * simplified struct.  This may be too much detail.  Perhaps
79	 * an array of unsigned longs is best.
80	 */
81	unsigned long	fpr_env[4];
82	unsigned char	fpr_acc[8][16];
83	unsigned char	fpr_xacc[16][16];
84	unsigned long	fpr_spare[12];
85};
86
87/*
88 * Register set accessible via /proc/$pid/dbregs.
89 */
90struct dbreg {
91	unsigned long  dr[16];	/* debug registers */
92				/* Index 0-3: debug address registers */
93				/* Index 4-5: reserved */
94				/* Index 6: debug status */
95				/* Index 7: debug control */
96				/* Index 8-15: reserved */
97};
98
99#define	DBREG_DR7_LOCAL_ENABLE	0x01
100#define	DBREG_DR7_GLOBAL_ENABLE	0x02
101#define	DBREG_DR7_LEN_1		0x00	/* 1 byte length          */
102#define	DBREG_DR7_LEN_2		0x01
103#define	DBREG_DR7_LEN_4		0x03
104#define	DBREG_DR7_LEN_8		0x02
105#define	DBREG_DR7_EXEC		0x00	/* break on execute       */
106#define	DBREG_DR7_WRONLY	0x01	/* break on write         */
107#define	DBREG_DR7_RDWR		0x03	/* break on read or write */
108#define	DBREG_DR7_MASK(i)	((u_long)0xf << ((i) * 4 + 16) | 0x3 << (i) * 2)
109#define	DBREG_DR7_SET(i, len, access, enable)				\
110	((u_long)((len) << 2 | (access)) << ((i) * 4 + 16) | (enable) << (i) * 2)
111#define	DBREG_DR7_GD		0x2000
112#define	DBREG_DR7_ENABLED(d, i)	(((d) & 0x3 << (i) * 2) != 0)
113#define	DBREG_DR7_ACCESS(d, i)	((d) >> ((i) * 4 + 16) & 0x3)
114#define	DBREG_DR7_LEN(d, i)	((d) >> ((i) * 4 + 18) & 0x3)
115
116#define	DBREG_DRX(d,x)	((d)->dr[(x)])	/* reference dr0 - dr15 by
117					   register number */
118
119#ifdef _KERNEL
120/*
121 * XXX these interfaces are MI, so they should be declared in a MI place.
122 */
123int	fill_regs(struct thread *, struct reg *);
124int	set_regs(struct thread *, struct reg *);
125int	fill_fpregs(struct thread *, struct fpreg *);
126int	set_fpregs(struct thread *, struct fpreg *);
127int	fill_dbregs(struct thread *, struct dbreg *);
128int	set_dbregs(struct thread *, struct dbreg *);
129#endif
130
131#endif /* !_MACHINE_REG_H_ */
132