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
|
/* Copyright (C) 2000 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* System V/s390 ABI compliant context switching support. */
#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H 1
#include <features.h>
#include <signal.h>
/* Type for general register. */
typedef int greg_t;
/* Number of general registers. */
#define NGREG 16
/* Number of each register is the `greg_t gregs[NREG]' array. */
enum
{
R_GPR0 = 0,
#define R_GPR0 R_GPR0
R_GPR1 = 1,
#define R_GPR1 R_GPR1
R_GPR2 = 2,
#define R_GPR2 R_GPR2
R_GPR3 = 3,
#define R_GPR3 R_GPR3
R_GPR4 = 4,
#define R_GPR4 R_GPR4
R_GPR5 = 5,
#define R_GPR5 R_GPR5
R_GPR6 = 6,
#define R_GPR6 R_GPR6
R_GPR7 = 7,
#define R_GPR7 R_GPR7
R_GPR8 = 8,
#define R_GPR8 R_GPR8
R_GPR9 = 9,
#define R_GPR9 R_GPR9
R_GPRA = 10,
#define R_GPRA R_GPRA
R_GPRB = 11,
#define R_GPRB R_GPRB
R_GPRC = 12,
#define R_GPRC R_GPRC
R_GPRD = 13,
#define R_GPRD R_GPRD
R_GPRE = 14,
#define R_GPRE R_GPRE
R_GPRF = 15
#define R_GPRF R_GPRF
};
/* Structure to describe FPU registers. */
typedef long long fpreg_t;
/* Context to describe whole processor state. */
typedef struct
{
int version;
greg_t gregs[NGREG];
fpreg_t fpregs[16];
} mcontext_t;
#define MCONTEXT_VERSION 1
/* Userlevel context. */
typedef struct ucontext
{
unsigned long int uc_flags;
struct ucontext *uc_links;
__sigset_t uc_sigmask;
stack_t uc_stack;
mcontext_t uc_mcontext;
long int uc_filler[170];
} ucontext_t;
#endif /* sys/ucontext.h */
|
