xref: /freebsd/sys/riscv/include/reg.h (revision 29fc4075e69fd27de0cded313ac6000165d99f8b)
1 /*-
2  * Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
3  * All rights reserved.
4  *
5  * Portions of this software were developed by SRI International and the
6  * University of Cambridge Computer Laboratory under DARPA/AFRL contract
7  * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
8  *
9  * Portions of this software were developed by the University of Cambridge
10  * Computer Laboratory as part of the CTSRD Project, with support from the
11  * UK Higher Education Innovation Fund (HEIF).
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  *
34  * $FreeBSD$
35  */
36 
37 #ifndef	_MACHINE_REG_H_
38 #define	_MACHINE_REG_H_
39 
40 #include <sys/_types.h>
41 
42 struct reg {
43 	__uint64_t	ra;		/* return address */
44 	__uint64_t	sp;		/* stack pointer */
45 	__uint64_t	gp;		/* global pointer */
46 	__uint64_t	tp;		/* thread pointer */
47 	__uint64_t	t[7];		/* temporaries */
48 	__uint64_t	s[12];		/* saved registers */
49 	__uint64_t	a[8];		/* function arguments */
50 	__uint64_t	sepc;		/* exception program counter */
51 	__uint64_t	sstatus;	/* status register */
52 };
53 
54 struct fpreg {
55 	__uint64_t	fp_x[32][2];	/* Floating point registers */
56 	__uint64_t	fp_fcsr;	/* Floating point control reg */
57 };
58 
59 struct dbreg {
60 	int dummy;
61 };
62 
63 #endif /* !_MACHINE_REG_H_ */
64