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1da177e4 LT |
1 | #ifndef _SIGCONTEXT32_H |
2 | #define _SIGCONTEXT32_H 1 | |
3 | ||
4 | /* signal context for 32bit programs. */ | |
5 | ||
6 | #define X86_FXSR_MAGIC 0x0000 | |
7 | ||
8 | struct _fpreg { | |
9 | unsigned short significand[4]; | |
10 | unsigned short exponent; | |
11 | }; | |
12 | ||
13 | struct _fpxreg { | |
14 | unsigned short significand[4]; | |
15 | unsigned short exponent; | |
16 | unsigned short padding[3]; | |
17 | }; | |
18 | ||
19 | struct _xmmreg { | |
20 | __u32 element[4]; | |
21 | }; | |
22 | ||
23 | /* FSAVE frame with extensions */ | |
24 | struct _fpstate_ia32 { | |
25 | /* Regular FPU environment */ | |
26 | __u32 cw; | |
27 | __u32 sw; | |
28 | __u32 tag; /* not compatible to 64bit twd */ | |
29 | __u32 ipoff; | |
30 | __u32 cssel; | |
31 | __u32 dataoff; | |
32 | __u32 datasel; | |
33 | struct _fpreg _st[8]; | |
34 | unsigned short status; | |
35 | unsigned short magic; /* 0xffff = regular FPU data only */ | |
36 | ||
37 | /* FXSR FPU environment */ | |
38 | __u32 _fxsr_env[6]; | |
39 | __u32 mxcsr; | |
40 | __u32 reserved; | |
41 | struct _fpxreg _fxsr_st[8]; | |
42 | struct _xmmreg _xmm[8]; /* It's actually 16 */ | |
43 | __u32 padding[56]; | |
44 | }; | |
45 | ||
46 | struct sigcontext_ia32 { | |
47 | unsigned short gs, __gsh; | |
48 | unsigned short fs, __fsh; | |
49 | unsigned short es, __esh; | |
50 | unsigned short ds, __dsh; | |
51 | unsigned int edi; | |
52 | unsigned int esi; | |
53 | unsigned int ebp; | |
54 | unsigned int esp; | |
55 | unsigned int ebx; | |
56 | unsigned int edx; | |
57 | unsigned int ecx; | |
58 | unsigned int eax; | |
59 | unsigned int trapno; | |
60 | unsigned int err; | |
61 | unsigned int eip; | |
62 | unsigned short cs, __csh; | |
63 | unsigned int eflags; | |
64 | unsigned int esp_at_signal; | |
65 | unsigned short ss, __ssh; | |
66 | unsigned int fpstate; /* really (struct _fpstate_ia32 *) */ | |
67 | unsigned int oldmask; | |
68 | unsigned int cr2; | |
69 | }; | |
70 | ||
71 | #endif |