Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
422 | giacomo | 1 | #ifndef _ASMi386_SIGCONTEXT_H |
2 | #define _ASMi386_SIGCONTEXT_H |
||
3 | |||
4 | #include <linux/compiler.h> |
||
5 | |||
6 | /* |
||
7 | * As documented in the iBCS2 standard.. |
||
8 | * |
||
9 | * The first part of "struct _fpstate" is just the normal i387 |
||
10 | * hardware setup, the extra "status" word is used to save the |
||
11 | * coprocessor status word before entering the handler. |
||
12 | * |
||
13 | * Pentium III FXSR, SSE support |
||
14 | * Gareth Hughes <gareth@valinux.com>, May 2000 |
||
15 | * |
||
16 | * The FPU state data structure has had to grow to accommodate the |
||
17 | * extended FPU state required by the Streaming SIMD Extensions. |
||
18 | * There is no documented standard to accomplish this at the moment. |
||
19 | */ |
||
20 | struct _fpreg { |
||
21 | unsigned short significand[4]; |
||
22 | unsigned short exponent; |
||
23 | }; |
||
24 | |||
25 | struct _fpxreg { |
||
26 | unsigned short significand[4]; |
||
27 | unsigned short exponent; |
||
28 | unsigned short padding[3]; |
||
29 | }; |
||
30 | |||
31 | struct _xmmreg { |
||
32 | unsigned long element[4]; |
||
33 | }; |
||
34 | |||
35 | struct _fpstate { |
||
36 | /* Regular FPU environment */ |
||
37 | unsigned long cw; |
||
38 | unsigned long sw; |
||
39 | unsigned long tag; |
||
40 | unsigned long ipoff; |
||
41 | unsigned long cssel; |
||
42 | unsigned long dataoff; |
||
43 | unsigned long datasel; |
||
44 | struct _fpreg _st[8]; |
||
45 | unsigned short status; |
||
46 | unsigned short magic; /* 0xffff = regular FPU data only */ |
||
47 | |||
48 | /* FXSR FPU environment */ |
||
49 | unsigned long _fxsr_env[6]; /* FXSR FPU env is ignored */ |
||
50 | unsigned long mxcsr; |
||
51 | unsigned long reserved; |
||
52 | struct _fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ |
||
53 | struct _xmmreg _xmm[8]; |
||
54 | unsigned long padding[56]; |
||
55 | }; |
||
56 | |||
57 | #define X86_FXSR_MAGIC 0x0000 |
||
58 | |||
59 | struct sigcontext { |
||
60 | unsigned short gs, __gsh; |
||
61 | unsigned short fs, __fsh; |
||
62 | unsigned short es, __esh; |
||
63 | unsigned short ds, __dsh; |
||
64 | unsigned long edi; |
||
65 | unsigned long esi; |
||
66 | unsigned long ebp; |
||
67 | unsigned long esp; |
||
68 | unsigned long ebx; |
||
69 | unsigned long edx; |
||
70 | unsigned long ecx; |
||
71 | unsigned long eax; |
||
72 | unsigned long trapno; |
||
73 | unsigned long err; |
||
74 | unsigned long eip; |
||
75 | unsigned short cs, __csh; |
||
76 | unsigned long eflags; |
||
77 | unsigned long esp_at_signal; |
||
78 | unsigned short ss, __ssh; |
||
79 | struct _fpstate __user * fpstate; |
||
80 | unsigned long oldmask; |
||
81 | unsigned long cr2; |
||
82 | }; |
||
83 | |||
84 | |||
85 | #endif |