1/*
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 *	@(#)ucontext.h	8.1 (Berkeley) 6/10/93
35 *	JNPR: ucontext.h,v 1.2 2007/08/09 11:23:32 katta
36 * $FreeBSD$
37 */
38
39#ifndef _MACHINE_UCONTEXT_H_
40#define	_MACHINE_UCONTEXT_H_
41
42#ifndef _LOCORE
43
44typedef struct	__mcontext {
45	/*
46	 * These fields must match the corresponding fields in struct
47	 * sigcontext which follow 'sc_mask'. That way we can support
48	 * struct sigcontext and ucontext_t at the same time.
49	 */
50	int		mc_onstack;	/* sigstack state to restore */
51	__register_t	mc_pc;		/* pc at time of signal */
52	__register_t	mc_regs[32];	/* processor regs 0 to 31 */
53	__register_t	sr;		/* status register */
54	__register_t	mullo, mulhi;	/* mullo and mulhi registers... */
55	int		mc_fpused;	/* fp has been used */
56	f_register_t	mc_fpregs[33];	/* fp regs 0 to 31 and csr */
57	__register_t	mc_fpc_eir;	/* fp exception instruction reg */
58	void		*mc_tls;	/* pointer to TLS area */
59	int		__spare__[8];	/* XXX reserved */
60} mcontext_t;
61
62#if (defined(__mips_n32) || defined(__mips_n64)) && defined(COMPAT_FREEBSD32)
63#include <compat/freebsd32/freebsd32_signal.h>
64
65typedef struct __mcontext32 {
66	int		mc_onstack;
67	int32_t		mc_pc;
68	int32_t		mc_regs[32];
69	int32_t		sr;
70	int32_t		mullo, mulhi;
71	int		mc_fpused;
72	int32_t		mc_fpregs[33];
73	int32_t		mc_fpc_eir;
74	int32_t		mc_tls;
75	int		__spare__[8];
76} mcontext32_t;
77
78typedef struct __ucontext32 {
79	sigset_t		uc_sigmask;
80	mcontext32_t		uc_mcontext;
81	uint32_t		uc_link;
82	struct sigaltstack32    uc_stack;
83	uint32_t		uc_flags;
84	uint32_t		__spare__[4];
85} ucontext32_t;
86#endif
87#endif
88
89#ifndef SZREG
90#if defined(__mips_o32)
91#define	SZREG	4
92#else
93#define	SZREG	8
94#endif
95#endif
96
97/* offsets into mcontext_t */
98#define	UCTX_REG(x)	(4 + SZREG + (x)*SZREG)
99
100#define	UCR_ZERO	UCTX_REG(0)
101#define	UCR_AT		UCTX_REG(1)
102#define	UCR_V0		UCTX_REG(2)
103#define	UCR_V1		UCTX_REG(3)
104#define	UCR_A0		UCTX_REG(4)
105#define	UCR_A1		UCTX_REG(5)
106#define	UCR_A2		UCTX_REG(6)
107#define	UCR_A3		UCTX_REG(7)
108#define	UCR_T0		UCTX_REG(8)
109#define	UCR_T1		UCTX_REG(9)
110#define	UCR_T2		UCTX_REG(10)
111#define	UCR_T3		UCTX_REG(11)
112#define	UCR_T4		UCTX_REG(12)
113#define	UCR_T5		UCTX_REG(13)
114#define	UCR_T6		UCTX_REG(14)
115#define	UCR_T7		UCTX_REG(15)
116#define	UCR_S0		UCTX_REG(16)
117#define	UCR_S1		UCTX_REG(17)
118#define	UCR_S2		UCTX_REG(18)
119#define	UCR_S3		UCTX_REG(19)
120#define	UCR_S4		UCTX_REG(20)
121#define	UCR_S5		UCTX_REG(21)
122#define	UCR_S6		UCTX_REG(22)
123#define	UCR_S7		UCTX_REG(23)
124#define	UCR_T8		UCTX_REG(24)
125#define	UCR_T9		UCTX_REG(25)
126#define	UCR_K0		UCTX_REG(26)
127#define	UCR_K1		UCTX_REG(27)
128#define	UCR_GP		UCTX_REG(28)
129#define	UCR_SP		UCTX_REG(29)
130#define	UCR_S8		UCTX_REG(30)
131#define	UCR_RA		UCTX_REG(31)
132#define	UCR_SR		UCTX_REG(32)
133#define	UCR_MDLO	UCTX_REG(33)
134#define	UCR_MDHI	UCTX_REG(34)
135
136#endif	/* !_MACHINE_UCONTEXT_H_ */
137