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01: #ifndef _ASM_X86_SIGCONTEXT32_H
02: #define _ASM_X86_SIGCONTEXT32_H
03: 
04: #include <linux/types.h>
05: 
06: /* signal context for 32bit programs. */
07: 
08: #define X86_FXSR_MAGIC          0x0000
09: 
10: struct _fpreg {
11:         unsigned short significand[4];
12:         unsigned short exponent;
13: };
14: 
15: struct _fpxreg {
16:         unsigned short significand[4];
17:         unsigned short exponent;
18:         unsigned short padding[3];
19: };
20: 
21: struct _xmmreg {
22:         __u32   element[4];
23: };
24: 
25: /* FSAVE frame with extensions */
26: struct _fpstate_ia32 {
27:         /* Regular FPU environment */
28:         __u32   cw;
29:         __u32   sw;
30:         __u32   tag;    /* not compatible to 64bit twd */
31:         __u32   ipoff;
32:         __u32   cssel;
33:         __u32   dataoff;
34:         __u32   datasel;
35:         struct _fpreg   _st[8];
36:         unsigned short  status;
37:         unsigned short  magic;          /* 0xffff = regular FPU data only */
38: 
39:         /* FXSR FPU environment */
40:         __u32   _fxsr_env[6];
41:         __u32   mxcsr;
42:         __u32   reserved;
43:         struct _fpxreg  _fxsr_st[8];
44:         struct _xmmreg  _xmm[8];        /* It's actually 16 */
45:         __u32   padding[44];
46:         union {
47:                 __u32 padding2[12];
48:                 struct _fpx_sw_bytes sw_reserved;
49:         };
50: };
51: 
52: struct sigcontext_ia32 {
53:        unsigned short gs, __gsh;
54:        unsigned short fs, __fsh;
55:        unsigned short es, __esh;
56:        unsigned short ds, __dsh;
57:        unsigned int di;
58:        unsigned int si;
59:        unsigned int bp;
60:        unsigned int sp;
61:        unsigned int bx;
62:        unsigned int dx;
63:        unsigned int cx;
64:        unsigned int ax;
65:        unsigned int trapno;
66:        unsigned int err;
67:        unsigned int ip;
68:        unsigned short cs, __csh;
69:        unsigned int flags;
70:        unsigned int sp_at_signal;
71:        unsigned short ss, __ssh;
72:        unsigned int fpstate;            /* really (struct _fpstate_ia32 *) */
73:        unsigned int oldmask;
74:        unsigned int cr2;
75: };
76: 
77: #endif /* _ASM_X86_SIGCONTEXT32_H */
78: 

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