sigcontext.h source code [include/x86_64-linux-gnu/bits/sigcontext.h]

1	/* Copyright (C) 2002-2016 Free Software Foundation, Inc.
2	This file is part of the GNU C Library.
3
4	The GNU C Library is free software; you can redistribute it and/or
5	modify it under the terms of the GNU Lesser General Public
6	License as published by the Free Software Foundation; either
7	version 2.1 of the License, or (at your option) any later version.
8
9	The GNU C Library is distributed in the hope that it will be useful,
10	but WITHOUT ANY WARRANTY; without even the implied warranty of
11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12	Lesser General Public License for more details.
13
14	You should have received a copy of the GNU Lesser General Public
15	License along with the GNU C Library; if not, see
16	<http://www.gnu.org/licenses/>. */
17
18	#ifndef _BITS_SIGCONTEXT_H
19	#define _BITS_SIGCONTEXT_H 1
20
21	#if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
22	# error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
23	#endif
24
25	#define FP_XSTATE_MAGIC1 0x46505853U
26	#define FP_XSTATE_MAGIC2 0x46505845U
27	#define FP_XSTATE_MAGIC2_SIZE sizeof(FP_XSTATE_MAGIC2)
28
29	struct _fpx_sw_bytes
30	{
31	__uint32_t magic1;
32	__uint32_t extended_size;
33	__uint64_t xstate_bv;
34	__uint32_t xstate_size;
35	__uint32_t padding[7];
36	};
37
38	struct _fpreg
39	{
40	unsigned short significand[4];
41	unsigned short exponent;
42	};
43
44	struct _fpxreg
45	{
46	unsigned short significand[4];
47	unsigned short exponent;
48	unsigned short padding[3];
49	};
50
51	struct _xmmreg
52	{
53	__uint32_t element[4];
54	};
55
56
57
58	#ifndef __x86_64__
59
60	struct _fpstate
61	{
62	/* Regular FPU environment. */
63	__uint32_t cw;
64	__uint32_t sw;
65	__uint32_t tag;
66	__uint32_t ipoff;
67	__uint32_t cssel;
68	__uint32_t dataoff;
69	__uint32_t datasel;
70	struct _fpreg _st[8];
71	unsigned short status;
72	unsigned short magic;
73
74	/* FXSR FPU environment. */
75	__uint32_t _fxsr_env[6];
76	__uint32_t mxcsr;
77	__uint32_t reserved;
78	struct _fpxreg _fxsr_st[8];
79	struct _xmmreg _xmm[8];
80	__uint32_t padding[56];
81	};
82
83	#ifndef sigcontext_struct
84	/* Kernel headers before 2.1.1 define a struct sigcontext_struct, but
85	we need sigcontext. Some packages have come to rely on
86	sigcontext_struct being defined on 32-bit x86, so define this for
87	their benefit. */
88	# define sigcontext_struct sigcontext
89	#endif
90
91	#define X86_FXSR_MAGIC 0x0000
92
93	struct sigcontext
94	{
95	unsigned short gs, __gsh;
96	unsigned short fs, __fsh;
97	unsigned short es, __esh;
98	unsigned short ds, __dsh;
99	unsigned long edi;
100	unsigned long esi;
101	unsigned long ebp;
102	unsigned long esp;
103	unsigned long ebx;
104	unsigned long edx;
105	unsigned long ecx;
106	unsigned long eax;
107	unsigned long trapno;
108	unsigned long err;
109	unsigned long eip;
110	unsigned short cs, __csh;
111	unsigned long eflags;
112	unsigned long esp_at_signal;
113	unsigned short ss, __ssh;
114	struct _fpstate * fpstate;
115	unsigned long oldmask;
116	unsigned long cr2;
117	};
118
119	#else /* __x86_64__ */
120
121	struct _fpstate
122	{
123	/* FPU environment matching the 64-bit FXSAVE layout. */
124	__uint16_t cwd;
125	__uint16_t swd;
126	__uint16_t ftw;
127	__uint16_t fop;
128	__uint64_t rip;
129	__uint64_t rdp;
130	__uint32_t mxcsr;
131	__uint32_t mxcr_mask;
132	struct _fpxreg _st[8];
133	struct _xmmreg _xmm[16];
134	__uint32_t padding[24];
135	};
136
137	struct sigcontext
138	{
139	__uint64_t r8;
140	__uint64_t r9;
141	__uint64_t r10;
142	__uint64_t r11;
143	__uint64_t r12;
144	__uint64_t r13;
145	__uint64_t r14;
146	__uint64_t r15;
147	__uint64_t rdi;
148	__uint64_t rsi;
149	__uint64_t rbp;
150	__uint64_t rbx;
151	__uint64_t rdx;
152	__uint64_t rax;
153	__uint64_t rcx;
154	__uint64_t rsp;
155	__uint64_t rip;
156	__uint64_t eflags;
157	unsigned short cs;
158	unsigned short gs;
159	unsigned short fs;
160	unsigned short __pad0;
161	__uint64_t err;
162	__uint64_t trapno;
163	__uint64_t oldmask;
164	__uint64_t cr2;
165	__extension__ union
166	{
167	struct _fpstate * fpstate;
168	__uint64_t __fpstate_word;
169	};
170	__uint64_t __reserved1 [8];
171	};
172
173	#endif /* __x86_64__ */
174
175	struct _xsave_hdr
176	{
177	__uint64_t xstate_bv;
178	__uint64_t reserved1[2];
179	__uint64_t reserved2[5];
180	};
181
182	struct _ymmh_state
183	{
184	__uint32_t ymmh_space[64];
185	};
186
187	struct _xstate
188	{
189	struct _fpstate fpstate;
190	struct _xsave_hdr xstate_hdr;
191	struct _ymmh_state ymmh;
192	};
193
194	#endif /* _BITS_SIGCONTEXT_H */
195