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1 | #ifndef _ASM_X86_SIGCONTEXT_H |
2 | #define _ASM_X86_SIGCONTEXT_H | |
3 | ||
4 | #include <linux/compiler.h> | |
5 | #include <asm/types.h> | |
6 | ||
7 | #ifdef __i386__ | |
8 | /* | |
9 | * As documented in the iBCS2 standard.. | |
10 | * | |
11 | * The first part of "struct _fpstate" is just the normal i387 | |
12 | * hardware setup, the extra "status" word is used to save the | |
13 | * coprocessor status word before entering the handler. | |
14 | * | |
15 | * Pentium III FXSR, SSE support | |
16 | * Gareth Hughes <gareth@valinux.com>, May 2000 | |
17 | * | |
18 | * The FPU state data structure has had to grow to accommodate the | |
19 | * extended FPU state required by the Streaming SIMD Extensions. | |
20 | * There is no documented standard to accomplish this at the moment. | |
21 | */ | |
22 | struct _fpreg { | |
23 | unsigned short significand[4]; | |
24 | unsigned short exponent; | |
25 | }; | |
26 | ||
27 | struct _fpxreg { | |
28 | unsigned short significand[4]; | |
29 | unsigned short exponent; | |
30 | unsigned short padding[3]; | |
31 | }; | |
32 | ||
33 | struct _xmmreg { | |
34 | unsigned long element[4]; | |
35 | }; | |
36 | ||
37 | struct _fpstate { | |
38 | /* Regular FPU environment */ | |
39 | unsigned long cw; | |
40 | unsigned long sw; | |
41 | unsigned long tag; | |
42 | unsigned long ipoff; | |
43 | unsigned long cssel; | |
44 | unsigned long dataoff; | |
45 | unsigned long datasel; | |
46 | struct _fpreg _st[8]; | |
47 | unsigned short status; | |
48 | unsigned short magic; /* 0xffff = regular FPU data only */ | |
49 | ||
50 | /* FXSR FPU environment */ | |
51 | unsigned long _fxsr_env[6]; /* FXSR FPU env is ignored */ | |
52 | unsigned long mxcsr; | |
53 | unsigned long reserved; | |
54 | struct _fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ | |
55 | struct _xmmreg _xmm[8]; | |
56 | unsigned long padding[56]; | |
57 | }; | |
58 | ||
59 | #define X86_FXSR_MAGIC 0x0000 | |
60 | ||
61 | struct sigcontext { | |
62 | unsigned short gs, __gsh; | |
63 | unsigned short fs, __fsh; | |
64 | unsigned short es, __esh; | |
65 | unsigned short ds, __dsh; | |
742fa54a PA |
66 | unsigned long di; |
67 | unsigned long si; | |
68 | unsigned long bp; | |
69 | unsigned long sp; | |
70 | unsigned long bx; | |
71 | unsigned long dx; | |
72 | unsigned long cx; | |
73 | unsigned long ax; | |
77129c5e TG |
74 | unsigned long trapno; |
75 | unsigned long err; | |
742fa54a | 76 | unsigned long ip; |
77129c5e | 77 | unsigned short cs, __csh; |
742fa54a PA |
78 | unsigned long flags; |
79 | unsigned long sp_at_signal; | |
77129c5e TG |
80 | unsigned short ss, __ssh; |
81 | struct _fpstate __user * fpstate; | |
82 | unsigned long oldmask; | |
83 | unsigned long cr2; | |
84 | }; | |
85 | ||
86 | #else /* __i386__ */ | |
87 | ||
88 | /* FXSAVE frame */ | |
89 | /* Note: reserved1/2 may someday contain valuable data. Always save/restore | |
90 | them when you change signal frames. */ | |
91 | struct _fpstate { | |
92 | __u16 cwd; | |
93 | __u16 swd; | |
94 | __u16 twd; /* Note this is not the same as the 32bit/x87/FSAVE twd */ | |
95 | __u16 fop; | |
96 | __u64 rip; | |
97 | __u64 rdp; | |
98 | __u32 mxcsr; | |
99 | __u32 mxcsr_mask; | |
100 | __u32 st_space[32]; /* 8*16 bytes for each FP-reg */ | |
101 | __u32 xmm_space[64]; /* 16*16 bytes for each XMM-reg */ | |
102 | __u32 reserved2[24]; | |
103 | }; | |
104 | ||
105 | struct sigcontext { | |
106 | unsigned long r8; | |
107 | unsigned long r9; | |
108 | unsigned long r10; | |
109 | unsigned long r11; | |
110 | unsigned long r12; | |
111 | unsigned long r13; | |
112 | unsigned long r14; | |
113 | unsigned long r15; | |
742fa54a PA |
114 | unsigned long di; |
115 | unsigned long si; | |
116 | unsigned long bp; | |
117 | unsigned long bx; | |
118 | unsigned long dx; | |
119 | unsigned long ax; | |
120 | unsigned long cx; | |
121 | unsigned long sp; | |
122 | unsigned long ip; | |
123 | unsigned long flags; | |
77129c5e TG |
124 | unsigned short cs; |
125 | unsigned short gs; | |
126 | unsigned short fs; | |
127 | unsigned short __pad0; | |
128 | unsigned long err; | |
129 | unsigned long trapno; | |
130 | unsigned long oldmask; | |
131 | unsigned long cr2; | |
132 | struct _fpstate __user *fpstate; /* zero when no FPU context */ | |
133 | unsigned long reserved1[8]; | |
134 | }; | |
135 | ||
136 | #endif /* !__i386__ */ | |
137 | ||
96a388de | 138 | #endif |