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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _SIGCONTEXT32_H
2#define _SIGCONTEXT32_H 1
3
4/* signal context for 32bit programs. */
5
6#define X86_FXSR_MAGIC 0x0000
7
8struct _fpreg {
9 unsigned short significand[4];
10 unsigned short exponent;
11};
12
13struct _fpxreg {
14 unsigned short significand[4];
15 unsigned short exponent;
16 unsigned short padding[3];
17};
18
19struct _xmmreg {
20 __u32 element[4];
21};
22
23/* FSAVE frame with extensions */
24struct _fpstate_ia32 {
25 /* Regular FPU environment */
26 __u32 cw;
27 __u32 sw;
28 __u32 tag; /* not compatible to 64bit twd */
Joe Perches895b7642008-03-23 01:03:26 -070029 __u32 ipoff;
Linus Torvalds1da177e2005-04-16 15:20:36 -070030 __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];
Joe Perches895b7642008-03-23 01:03:26 -070042 struct _xmmreg _xmm[8]; /* It's actually 16 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 __u32 padding[56];
44};
45
46struct sigcontext_ia32 {
47 unsigned short gs, __gsh;
48 unsigned short fs, __fsh;
49 unsigned short es, __esh;
50 unsigned short ds, __dsh;
H. Peter Anvin742fa542008-01-30 13:30:56 +010051 unsigned int di;
52 unsigned int si;
53 unsigned int bp;
54 unsigned int sp;
55 unsigned int bx;
56 unsigned int dx;
57 unsigned int cx;
58 unsigned int ax;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059 unsigned int trapno;
60 unsigned int err;
H. Peter Anvin742fa542008-01-30 13:30:56 +010061 unsigned int ip;
Linus Torvalds1da177e2005-04-16 15:20:36 -070062 unsigned short cs, __csh;
H. Peter Anvin742fa542008-01-30 13:30:56 +010063 unsigned int flags;
64 unsigned int sp_at_signal;
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 unsigned short ss, __ssh;
66 unsigned int fpstate; /* really (struct _fpstate_ia32 *) */
67 unsigned int oldmask;
68 unsigned int cr2;
69};
70
71#endif