FreeBSD/Linux Kernel Cross Reference
sys/i386/include/reg.h
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 dr0; /* debug address register 0 */
126 unsigned int dr1; /* debug address register 1 */
127 unsigned int dr2; /* debug address register 2 */
128 unsigned int dr3; /* debug address register 3 */
129 unsigned int dr4; /* reserved */
130 unsigned int dr5; /* reserved */
131 unsigned int dr6; /* debug status register */
132 unsigned int dr7; /* debug control register */
133 };
134
135 #define DBREG_DR7_EXEC 0x00 /* break on execute */
136 #define DBREG_DR7_WRONLY 0x01 /* break on write */
137 #define DBREG_DR7_RDWR 0x03 /* break on read or write */
138 #define DBREG_DRX(d,x) ((&(d)->dr0)[x]) /* reference dr0 - dr7 by
139 register number */
140
141
142 #ifdef _KERNEL
143 /*
144 * XXX these interfaces are MI, so they should be declared in a MI place.
145 */
146 int set_fpregs __P((struct proc *, struct fpreg *));
147 int set_regs __P((struct proc *p, struct reg *regs));
148 void setregs __P((struct proc *, u_long, u_long, u_long));
149 int set_dbregs __P((struct proc *p, struct dbreg *dbregs));
150 #endif
151
152 #endif /* !_MACHINE_REG_H_ */
Cache object: f6f90375564ea8ba2339c87219e6e092
|