1 /* Copyright (C) 2002-2015 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