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 */
78