sigcontext32.h revision 0437c52788a98ab8ea84041c6b1f8d7a93e872f6 
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
10struct _fpreg {
11	unsigned short significand[4];
12	unsigned short exponent;
13};
14
15struct _fpxreg {
16	unsigned short significand[4];
17	unsigned short exponent;
18	unsigned short padding[3];
19};
20
21struct _xmmreg {
22	__u32	element[4];
23};
24
25/* FSAVE frame with extensions */
26struct _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
52struct 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