2 * Copyright (c) 1990 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
36 * from: @(#)reg.h 5.5 (Berkeley) 1/18/91
37 * $FreeBSD: src/sys/i386/include/reg.h,v 1.22.2.2 2002/11/07 22:47:55 alfred Exp $
40 #ifndef _MACHINE_REG_H_
41 #define _MACHINE_REG_H_
44 * Indices for registers in `struct trapframe' and `struct regs'.
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.
73 * Indices for registers in `struct regs' only.
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'.
82 * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS.
96 unsigned int r_trapno;
100 unsigned int r_eflags;
107 * Register set accessible via /proc/$pid/fpregs.
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.
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];
122 * Register set accessible via /proc/$pid/dbregs.
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 */
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
144 * XXX these interfaces are MI, so they should be declared in a MI place.
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));
152 #endif /* !_MACHINE_REG_H_ */