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
|
/* Copyright (C) 1997-2023 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, see
<https://www.gnu.org/licenses/>. */
/* System V/m68k ABI compliant context switching support. */
#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H 1
#include <features.h>
#include <bits/types/sigset_t.h>
#include <bits/types/stack_t.h>
/* Type for general register. */
typedef int greg_t;
/* Number of general registers. */
#define __NGREG 18
#ifdef __USE_MISC
# define NGREG __NGREG
#endif
/* Container for all general registers. */
typedef greg_t gregset_t[__NGREG];
#ifdef __USE_MISC
/* Number of each register is the `gregset_t' array. */
enum
{
R_D0 = 0,
# define R_D0 R_D0
R_D1 = 1,
# define R_D1 R_D1
R_D2 = 2,
# define R_D2 R_D2
R_D3 = 3,
# define R_D3 R_D3
R_D4 = 4,
# define R_D4 R_D4
R_D5 = 5,
# define R_D5 R_D5
R_D6 = 6,
# define R_D6 R_D6
R_D7 = 7,
# define R_D7 R_D7
R_A0 = 8,
# define R_A0 R_A0
R_A1 = 9,
# define R_A1 R_A1
R_A2 = 10,
# define R_A2 R_A2
R_A3 = 11,
# define R_A3 R_A3
R_A4 = 12,
# define R_A4 R_A4
R_A5 = 13,
# define R_A5 R_A5
R_A6 = 14,
# define R_A6 R_A6
R_A7 = 15,
# define R_A7 R_A7
R_SP = 15,
# define R_SP R_SP
R_PC = 16,
# define R_PC R_PC
R_PS = 17
# define R_PS R_PS
};
/* Structure to describe FPU registers. */
typedef struct
{
int f_pcr;
int f_psr;
int f_fpiaddr;
int f_fpregs[8][3];
} fpregset_t;
#endif
#ifdef __USE_MISC
# define __ctx(fld) fld
#else
# define __ctx(fld) __ ## fld
#endif
/* Context to describe whole processor state. */
typedef struct
{
int __ctx(version);
gregset_t __ctx(gregs);
} mcontext_t;
#ifdef __USE_MISC
# define MCONTEXT_VERSION 1
#endif
/* Userlevel context. */
typedef struct ucontext_t
{
unsigned long int __ctx(uc_flags);
struct ucontext_t *uc_link;
sigset_t uc_sigmask;
stack_t uc_stack;
mcontext_t uc_mcontext;
long int __glibc_reserved1[201];
} ucontext_t;
#undef __ctx
#endif /* sys/ucontext.h */
|
