aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/mips/sys/ucontext.h
blob: 90aa09a80fc63f6e36936d9341c042ba22c01271 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
/* Copyright (C) 1998, 1999, 2002, 2003 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

/* System V/mips ABI compliant context switching support.  */

#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H	1

#include <features.h>
#include <signal.h>

/* Type for general register.  */
#if _MIPS_SIM == _MIPS_SIM_ABI32
typedef __uint32_t greg_t;
#else
typedef __uint64_t greg_t;
#endif

/* Number of general registers.  */
#define NGREG	36

/* Container for all general registers.  */
typedef greg_t gregset_t[NGREG];

/* Number of each register is the `gregset_t' array.  */
enum
{
  CTX_R0 = 0,
#define CTX_R0	CTX_R0
  CTX_AT = 1,
#define CTX_AT	CTX_AT
  CTX_V0 = 2,
#define CTX_V0	CTX_V0
  CTX_V1 = 3,
#define CTX_V1	CTX_V1
  CTX_A0 = 4,
#define CTX_A0	CTX_A0
  CTX_A1 = 5,
#define CTX_A1	CTX_A1
  CTX_A2 = 6,
#define CTX_A2	CTX_A2
  CTX_A3 = 7,
#define CTX_A3	CTX_A3
  CTX_T0 = 8,
#define CTX_T0	CTX_T0
  CTX_T1 = 9,
#define CTX_T1	CTX_T1
  CTX_T2 = 10,
#define CTX_T2	CTX_T2
  CTX_T3 = 11,
#define CTX_T3	CTX_T3
  CTX_T4 = 12,
#define CTX_T4	CTX_T4
  CTX_T5 = 13,
#define CTX_T5	CTX_T5
  CTX_T6 = 14,
#define CTX_T6	CTX_T6
  CTX_T7 = 15,
#define CTX_T7	CTX_T7
  CTX_S0 = 16,
#define CTX_S0	CTX_S0
  CTX_S1 = 17,
#define CTX_S1	CTX_S1
  CTX_S2 = 18,
#define CTX_S2	CTX_S2
  CTX_S3 = 19,
#define CTX_S3	CTX_S3
  CTX_S4 = 20,
#define CTX_S4	CTX_S4
  CTX_S5 = 21,
#define CTX_S5	CTX_S5
  CTX_S6 = 22,
#define CTX_S6	CTX_S6
  CTX_S7 = 23,
#define CTX_S7	CTX_S7
  CTX_T8 = 24,
#define CTX_T8	CTX_T8
  CTX_T9 = 25,
#define CTX_T9	CTX_T9
  CTX_K0 = 26,
#define CTX_K0	CTX_K0
  CTX_K1 = 27,
#define CTX_K1	CTX_K1
  CTX_GP = 28,
#define CTX_GP	CTX_GP
  CTX_SP = 29,
#define CTX_SP	CTX_SP
  CTX_S8 = 30,
#define CTX_S8	CTX_S8
  CTX_RA = 31,
#define CTX_RA	CTX_RA
  CTX_MDLO = 32,
#define CTX_MDLO	CTX_MDLO
  CTX_MDHI = 33,
#define CTX_MDHI	CTX_MDHI
  CTX_CAUSE = 34,
#define CTX_CAUSE	CTX_CAUSE
  CTX_EPC = 35,
#define CTX_EPC	CTX_EPC
};

/* Structure to describe FPU registers.  */
typedef struct fpregset
{
  union
  {
#if _MIPS_SIM == _MIPS_SIM_ABI32
    double fp_dregs[16];
    float fp_fregs[32];
    unsigned int fp_regs[32];
#else
    double fp_dregs[32];
    /* float fp_fregs[32]; */
    __uint64_t fp_regs[32];
#endif
  } fp_r;
  unsigned int fp_csr;
  unsigned int fp_pad;
} fpregset_t;

/* Context to describe whole processor state.  */
typedef struct
{
  gregset_t gpregs;
  fpregset_t fpregs;
} mcontext_t;

/* Userlevel context.  */
typedef struct ucontext
{
#if _MIPS_SIM == _MIPS_SIM_ABI32
  unsigned long int uc_flags;
#else
  __uint64_t uc_flags;
#endif
  struct ucontext *uc_link;
  __sigset_t uc_sigmask;
  stack_t uc_stack;
  mcontext_t uc_mcontext;
  int uc_filler[48];
} ucontext_t;

#endif /* sys/ucontext.h */