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 $
38 * $DragonFly: src/sys/cpu/i386/include/reg.h,v 1.8 2007/01/08 03:33:37 dillon Exp $
45 * Indices for registers in `struct trapframe' and `struct regs'.
47 * This interface is deprecated. In the kernel, it is only used in FPU
48 * emulators to convert from register numbers encoded in instructions to
49 * register values. Everything else just accesses the relevant struct
50 * members. In userland, debuggers tend to abuse this interface since
51 * they don't understand that `struct regs' is a struct. I hope they have
52 * stopped accessing the registers in the trap frame via PT_{READ,WRITE}_U
53 * and we can stop supporting the user area soon.
77 * Indices for registers in `struct regs' only.
79 * Some registers live in the pcb and are only in an "array" with the
80 * other registers in application interfaces that copy all the registers
81 * to or from a `struct regs'.
85 * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS.
100 unsigned int r_xflags;
101 unsigned int r_trapno;
105 unsigned int r_eflags;
111 * Register set accessible via /proc/$pid/fpregs.
115 * XXX should get struct from npx.h. Here we give a slightly
116 * simplified struct. This may be too much detail. Perhaps
117 * an array of unsigned longs is best.
119 unsigned long fpr_env[7];
120 unsigned char fpr_acc[8][10];
121 unsigned long fpr_ex_sw;
122 unsigned char fpr_pad[64];
126 * Register set accessible via /proc/$pid/dbregs.
129 unsigned int dr0; /* debug address register 0 */
130 unsigned int dr1; /* debug address register 1 */
131 unsigned int dr2; /* debug address register 2 */
132 unsigned int dr3; /* debug address register 3 */
133 unsigned int dr4; /* reserved */
134 unsigned int dr5; /* reserved */
135 unsigned int dr6; /* debug status register */
136 unsigned int dr7; /* debug control register */
139 #define DBREG_DR7_EXEC 0x00 /* break on execute */
140 #define DBREG_DR7_WRONLY 0x01 /* break on write */
141 #define DBREG_DR7_RDWR 0x03 /* break on read or write */
142 #define DBREG_DRX(d,x) ((&(d)->dr0)[x]) /* reference dr0 - dr7 by
145 #endif /* !_CPU_REG_H_ */