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 * $FreeBSD$
35 */
36
37 #ifndef _MACHINE_REG_H_
38 #define _MACHINE_REG_H_
39
40 /*
41 * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS.
42 */
43 struct reg {
44 register_t r_r15;
45 register_t r_r14;
46 register_t r_r13;
47 register_t r_r12;
48 register_t r_r11;
49 register_t r_r10;
50 register_t r_r9;
51 register_t r_r8;
52 register_t r_rdi;
53 register_t r_rsi;
54 register_t r_rbp;
55 register_t r_rbx;
56 register_t r_rdx;
57 register_t r_rcx;
58 register_t r_rax;
59 register_t r_trapno;
60 register_t r_err;
61 register_t r_rip;
62 register_t r_cs;
63 register_t r_rflags;
64 register_t r_rsp;
65 register_t r_ss;
66 };
67
68 /*
69 * Register set accessible via /proc/$pid/fpregs.
70 */
71 struct fpreg {
72 /*
73 * XXX should get struct from fpu.h. Here we give a slightly
74 * simplified struct. This may be too much detail. Perhaps
75 * an array of unsigned longs is best.
76 */
77 unsigned long fpr_env[4];
78 unsigned char fpr_acc[8][16];
79 unsigned char fpr_xacc[16][16];
80 unsigned long fpr_spare[12];
81 };
82
83 /*
84 * Register set accessible via /proc/$pid/dbregs.
85 */
86 struct dbreg {
87 unsigned long dr[16]; /* debug registers */
88 /* Index 0-3: debug address registers */
89 /* Index 4-5: reserved */
90 /* Index 6: debug status */
91 /* Index 7: debug control */
92 /* Index 8-15: reserved */
93 };
94
95 #define DBREG_DR7_LOCAL_ENABLE 0x01
96 #define DBREG_DR7_GLOBAL_ENABLE 0x02
97 #define DBREG_DR7_LEN_1 0x00 /* 1 byte length */
98 #define DBREG_DR7_LEN_2 0x01
99 #define DBREG_DR7_LEN_4 0x03
100 #define DBREG_DR7_LEN_8 0x02
101 #define DBREG_DR7_EXEC 0x00 /* break on execute */
102 #define DBREG_DR7_WRONLY 0x01 /* break on write */
103 #define DBREG_DR7_RDWR 0x03 /* break on read or write */
104 #define DBREG_DR7_MASK(i) ((u_long)0xf << ((i) * 4 + 16) | 0x3 << (i) * 2)
105 #define DBREG_DR7_SET(i, len, access, enable) \
106 ((u_long)((len) << 2 | (access)) << ((i) * 4 + 16) | (enable) << (i) * 2)
107 #define DBREG_DR7_GD 0x2000
108 #define DBREG_DR7_ENABLED(d, i) (((d) & 0x3 << (i) * 2) != 0)
109 #define DBREG_DR7_ACCESS(d, i) ((d) >> ((i) * 4 + 16) & 0x3)
110 #define DBREG_DR7_LEN(d, i) ((d) >> ((i) * 4 + 18) & 0x3)
111
112 #define DBREG_DRX(d,x) ((d)->dr[(x)]) /* reference dr0 - dr15 by
113 register number */
114
115 #ifdef _KERNEL
116 /*
117 * XXX these interfaces are MI, so they should be declared in a MI place.
118 */
119 int fill_regs(struct thread *, struct reg *);
120 int set_regs(struct thread *, struct reg *);
121 int fill_fpregs(struct thread *, struct fpreg *);
122 int set_fpregs(struct thread *, struct fpreg *);
123 int fill_dbregs(struct thread *, struct dbreg *);
124 int set_dbregs(struct thread *, struct dbreg *);
125 #endif
126
127 #endif /* !_MACHINE_REG_H_ */
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