1 /* Copyright (C) 2002 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, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
18
19 #ifndef _BITS_SIGCONTEXT_H
20 #define _BITS_SIGCONTEXT_H 1
21
22 #if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
23 # error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
24 #endif
25
26 #include <bits/wordsize.h>
27
28 struct _fpreg
29 {
30 unsigned short significand[4];
31 unsigned short exponent;
32 };
33
34 struct _fpxreg
35 {
36 unsigned short significand[4];
37 unsigned short exponent;
38 unsigned short padding[3];
39 };
40
41 struct _xmmreg
42 {
43 __uint32_t element[4];
44 };
45
46
47
48 #if __WORDSIZE == 32
49
50 struct _fpstate
51 {
52 /* Regular FPU environment. */
53 __uint32_t cw;
54 __uint32_t sw;
55 __uint32_t tag;
56 __uint32_t ipoff;
57 __uint32_t cssel;
58 __uint32_t dataoff;
59 __uint32_t datasel;
60 struct _fpreg _st[8];
61 unsigned short status;
62 unsigned short magic;
63
64 /* FXSR FPU environment. */
65 __uint32_t _fxsr_env[6];
66 __uint32_t mxcsr;
67 __uint32_t reserved;
68 struct _fpxreg _fxsr_st[8];
69 struct _xmmreg _xmm[8];
70 __uint32_t padding[56];
71 };
72
73 #ifndef sigcontext_struct
74 /* Kernel headers before 2.1.1 define a struct sigcontext_struct, but
75 we need sigcontext. Some packages have come to rely on
76 sigcontext_struct being defined on 32-bit x86, so define this for
77 their benefit. */
78 # define sigcontext_struct sigcontext
79 #endif
80
81 struct sigcontext
82 {
83 unsigned short gs, __gsh;
84 unsigned short fs, __fsh;
85 unsigned short es, __esh;
86 unsigned short ds, __dsh;
87 unsigned long edi;
88 unsigned long esi;
89 unsigned long ebp;
90 unsigned long esp;
91 unsigned long ebx;
92 unsigned long edx;
93 unsigned long ecx;
94 unsigned long eax;
95 unsigned long trapno;
96 unsigned long err;
97 unsigned long eip;
98 unsigned short cs, __csh;
99 unsigned long eflags;
100 unsigned long esp_at_signal;
101 unsigned short ss, __ssh;
102 struct _fpstate * fpstate;
103 unsigned long oldmask;
104 unsigned long cr2;
105 };
106
107 #else /* __WORDSIZE == 64 */
108
109 struct _fpstate
110 {
111 /* FPU environment matching the 64-bit FXSAVE layout. */
112 __uint16_t cwd;
113 __uint16_t swd;
114 __uint16_t ftw;
115 __uint16_t fop;
116 __uint64_t rip;
117 __uint64_t rdp;
118 __uint32_t mxcsr;
119 __uint32_t mxcr_mask;
120 struct _fpxreg _st[8];
121 struct _xmmreg _xmm[16];
122 __uint32_t padding[24];
123 };
124
125 struct sigcontext
126 {
127 unsigned long r8;
128 unsigned long r9;
129 unsigned long r10;
130 unsigned long r11;
131 unsigned long r12;
132 unsigned long r13;
133 unsigned long r14;
134 unsigned long r15;
135 unsigned long rdi;
136 unsigned long rsi;
137 unsigned long rbp;
138 unsigned long rbx;
139 unsigned long rdx;
140 unsigned long rax;
141 unsigned long rcx;
142 unsigned long rsp;
143 unsigned long rip;
144 unsigned long eflags;
145 unsigned short cs;
146 unsigned short gs;
147 unsigned short fs;
148 unsigned short __pad0;
149 unsigned long err;
150 unsigned long trapno;
151 unsigned long oldmask;
152 unsigned long cr2;
153 struct _fpstate * fpstate;
154 unsigned long __reserved1 [8];
155 };
156
157 #endif /* __WORDSIZE == 64 */
158
159 #endif /* _BITS_SIGCONTEXT_H */
160