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
44 typedef 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
65 typedef 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
78 typedef 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_ */
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