xref: /freebsd/sys/i386/include/reg.h (revision 380a989b3223d455375b4fae70fd0b9bdd43bafb)
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  *	$Id: reg.h,v 1.15 1997/06/07 04:36:06 bde Exp $
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	tES	(0)
55 #define	tDS	(1)
56 #define	tEDI	(2)
57 #define	tESI	(3)
58 #define	tEBP	(4)
59 #define	tISP	(5)
60 #define	tEBX	(6)
61 #define	tEDX	(7)
62 #define	tECX	(8)
63 #define	tEAX	(9)
64 #define	tERR	(11)
65 #define	tEIP	(12)
66 #define	tCS	(13)
67 #define	tEFLAGS	(14)
68 #define	tESP	(15)
69 #define	tSS	(16)
70 
71 /*
72  * Indices for registers in `struct regs' only.
73  *
74  * Some registers live in the pcb and are only in an "array" with the
75  * other registers in application interfaces that copy all the registers
76  * to or from a `struct regs'.
77  */
78 #define	tFS	(17)
79 #define	tGS	(18)
80 
81 /*
82  * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS.
83  */
84 struct reg {
85 	unsigned int	r_es;
86 	unsigned int	r_ds;
87 	unsigned int	r_edi;
88 	unsigned int	r_esi;
89 	unsigned int	r_ebp;
90 	unsigned int	r_isp;
91 	unsigned int	r_ebx;
92 	unsigned int	r_edx;
93 	unsigned int	r_ecx;
94 	unsigned int	r_eax;
95 	unsigned int	r_trapno;
96 	unsigned int	r_err;
97 	unsigned int	r_eip;
98 	unsigned int	r_cs;
99 	unsigned int	r_eflags;
100 	unsigned int	r_esp;
101 	unsigned int	r_ss;
102 	unsigned int	r_fs;
103 	unsigned int	r_gs;
104 };
105 
106 /*
107  * Register set accessible via /proc/$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 #ifdef KERNEL
122 /*
123  * XXX these interfaces are MI, so they should be declared in a MI place.
124  */
125 int	set_fpregs __P((struct proc *, struct fpreg *));
126 int	set_regs __P((struct proc *p, struct reg *regs));
127 void	setregs __P((struct proc *, u_long, u_long));
128 #endif
129 
130 #endif /* !_MACHINE_REG_H_ */
131