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sigcontext32.h
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1 #ifndef _ASM_X86_SIGCONTEXT32_H
2 #define _ASM_X86_SIGCONTEXT32_H
3 
4 #include <linux/types.h>
5 
6 /* signal context for 32bit programs. */
7 
8 #define X86_FXSR_MAGIC 0x0000
9 
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 */
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