]>
git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/asm-x86/sigcontext.h
1 #ifndef _ASM_X86_SIGCONTEXT_H
2 #define _ASM_X86_SIGCONTEXT_H
4 #include <linux/compiler.h>
9 * As documented in the iBCS2 standard..
11 * The first part of "struct _fpstate" is just the normal i387
12 * hardware setup, the extra "status" word is used to save the
13 * coprocessor status word before entering the handler.
15 * Pentium III FXSR, SSE support
16 * Gareth Hughes <gareth@valinux.com>, May 2000
18 * The FPU state data structure has had to grow to accommodate the
19 * extended FPU state required by the Streaming SIMD Extensions.
20 * There is no documented standard to accomplish this at the moment.
23 unsigned short significand
[4];
24 unsigned short exponent
;
28 unsigned short significand
[4];
29 unsigned short exponent
;
30 unsigned short padding
[3];
34 unsigned long element
[4];
38 /* Regular FPU environment */
44 unsigned long dataoff
;
45 unsigned long datasel
;
47 unsigned short status
;
48 unsigned short magic
; /* 0xffff = regular FPU data only */
50 /* FXSR FPU environment */
51 unsigned long _fxsr_env
[6]; /* FXSR FPU env is ignored */
53 unsigned long reserved
;
54 struct _fpxreg _fxsr_st
[8]; /* FXSR FPU reg data is ignored */
55 struct _xmmreg _xmm
[8];
56 unsigned long padding
[56];
59 #define X86_FXSR_MAGIC 0x0000
62 unsigned short gs
, __gsh
;
63 unsigned short fs
, __fsh
;
64 unsigned short es
, __esh
;
65 unsigned short ds
, __dsh
;
77 unsigned short cs
, __csh
;
79 unsigned long sp_at_signal
;
80 unsigned short ss
, __ssh
;
81 struct _fpstate __user
* fpstate
;
82 unsigned long oldmask
;
89 /* Note: reserved1/2 may someday contain valuable data. Always save/restore
90 them when you change signal frames. */
94 __u16 twd
; /* Note this is not the same as the 32bit/x87/FSAVE twd */
100 __u32 st_space
[32]; /* 8*16 bytes for each FP-reg */
101 __u32 xmm_space
[64]; /* 16*16 bytes for each XMM-reg */
127 unsigned short __pad0
;
129 unsigned long trapno
;
130 unsigned long oldmask
;
132 struct _fpstate __user
*fpstate
; /* zero when no FPU context */
133 unsigned long reserved1
[8];
136 #endif /* !__i386__ */