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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
/* Copyright (C) 2001-2017 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
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H 1
#include <features.h>
#include <bits/types.h>
#include <bits/types/sigset_t.h>
#include <bits/types/stack_t.h>
#ifdef __USE_MISC
# define __ctx(fld) fld
#else
# define __ctx(fld) __ ## fld
#endif
#ifdef __x86_64__
/* Type for general register. */
__extension__ typedef long long int greg_t;
/* Number of general registers. */
#define __NGREG 23
#ifdef __USE_MISC
# define NGREG __NGREG
#endif
/* Container for all general registers. */
typedef greg_t gregset_t[__NGREG];
#ifdef __USE_GNU
/* Number of each register in the `gregset_t' array. */
enum
{
REG_R8 = 0,
# define REG_R8 REG_R8
REG_R9,
# define REG_R9 REG_R9
REG_R10,
# define REG_R10 REG_R10
REG_R11,
# define REG_R11 REG_R11
REG_R12,
# define REG_R12 REG_R12
REG_R13,
# define REG_R13 REG_R13
REG_R14,
# define REG_R14 REG_R14
REG_R15,
# define REG_R15 REG_R15
REG_RDI,
# define REG_RDI REG_RDI
REG_RSI,
# define REG_RSI REG_RSI
REG_RBP,
# define REG_RBP REG_RBP
REG_RBX,
# define REG_RBX REG_RBX
REG_RDX,
# define REG_RDX REG_RDX
REG_RAX,
# define REG_RAX REG_RAX
REG_RCX,
# define REG_RCX REG_RCX
REG_RSP,
# define REG_RSP REG_RSP
REG_RIP,
# define REG_RIP REG_RIP
REG_EFL,
# define REG_EFL REG_EFL
REG_CSGSFS, /* Actually short cs, gs, fs, __pad0. */
# define REG_CSGSFS REG_CSGSFS
REG_ERR,
# define REG_ERR REG_ERR
REG_TRAPNO,
# define REG_TRAPNO REG_TRAPNO
REG_OLDMASK,
# define REG_OLDMASK REG_OLDMASK
REG_CR2
# define REG_CR2 REG_CR2
};
#endif
struct _libc_fpxreg
{
unsigned short int __ctx(significand)[4];
unsigned short int __ctx(exponent);
unsigned short int __glibc_reserved1[3];
};
struct _libc_xmmreg
{
__uint32_t __ctx(element)[4];
};
struct _libc_fpstate
{
/* 64-bit FXSAVE format. */
__uint16_t __ctx(cwd);
__uint16_t __ctx(swd);
__uint16_t __ctx(ftw);
__uint16_t __ctx(fop);
__uint64_t __ctx(rip);
__uint64_t __ctx(rdp);
__uint32_t __ctx(mxcsr);
__uint32_t __ctx(mxcr_mask);
struct _libc_fpxreg _st[8];
struct _libc_xmmreg _xmm[16];
__uint32_t __glibc_reserved1[24];
};
/* Structure to describe FPU registers. */
typedef struct _libc_fpstate *fpregset_t;
/* Context to describe whole processor state. */
typedef struct
{
gregset_t __ctx(gregs);
/* Note that fpregs is a pointer. */
fpregset_t __ctx(fpregs);
__extension__ unsigned long long __reserved1 [8];
} mcontext_t;
/* Userlevel context. */
typedef struct ucontext_t
{
unsigned long int __ctx(uc_flags);
struct ucontext_t *uc_link;
stack_t uc_stack;
mcontext_t uc_mcontext;
sigset_t uc_sigmask;
struct _libc_fpstate __fpregs_mem;
} ucontext_t;
#else /* !__x86_64__ */
/* Type for general register. */
typedef int greg_t;
/* Number of general registers. */
#define __NGREG 19
#ifdef __USE_MISC
# define NGREG __NGREG
#endif
/* Container for all general registers. */
typedef greg_t gregset_t[__NGREG];
#ifdef __USE_GNU
/* Number of each register is the `gregset_t' array. */
enum
{
REG_GS = 0,
# define REG_GS REG_GS
REG_FS,
# define REG_FS REG_FS
REG_ES,
# define REG_ES REG_ES
REG_DS,
# define REG_DS REG_DS
REG_EDI,
# define REG_EDI REG_EDI
REG_ESI,
# define REG_ESI REG_ESI
REG_EBP,
# define REG_EBP REG_EBP
REG_ESP,
# define REG_ESP REG_ESP
REG_EBX,
# define REG_EBX REG_EBX
REG_EDX,
# define REG_EDX REG_EDX
REG_ECX,
# define REG_ECX REG_ECX
REG_EAX,
# define REG_EAX REG_EAX
REG_TRAPNO,
# define REG_TRAPNO REG_TRAPNO
REG_ERR,
# define REG_ERR REG_ERR
REG_EIP,
# define REG_EIP REG_EIP
REG_CS,
# define REG_CS REG_CS
REG_EFL,
# define REG_EFL REG_EFL
REG_UESP,
# define REG_UESP REG_UESP
REG_SS
# define REG_SS REG_SS
};
#endif
/* Definitions taken from the kernel headers. */
struct _libc_fpreg
{
unsigned short int __ctx(significand)[4];
unsigned short int __ctx(exponent);
};
struct _libc_fpstate
{
unsigned long int __ctx(cw);
unsigned long int __ctx(sw);
unsigned long int __ctx(tag);
unsigned long int __ctx(ipoff);
unsigned long int __ctx(cssel);
unsigned long int __ctx(dataoff);
unsigned long int __ctx(datasel);
struct _libc_fpreg _st[8];
unsigned long int __ctx(status);
};
/* Structure to describe FPU registers. */
typedef struct _libc_fpstate *fpregset_t;
/* Context to describe whole processor state. */
typedef struct
{
gregset_t __ctx(gregs);
/* Due to Linux's history we have to use a pointer here. The SysV/i386
ABI requires a struct with the values. */
fpregset_t __ctx(fpregs);
unsigned long int __ctx(oldmask);
unsigned long int __ctx(cr2);
} mcontext_t;
/* Userlevel context. */
typedef struct ucontext_t
{
unsigned long int __ctx(uc_flags);
struct ucontext_t *uc_link;
stack_t uc_stack;
mcontext_t uc_mcontext;
sigset_t uc_sigmask;
struct _libc_fpstate __fpregs_mem;
} ucontext_t;
#endif /* !__x86_64__ */
#undef __ctx
#endif /* sys/ucontext.h */
|
