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#ifndef _UAPI_ASM_X86_SIGCONTEXT_H

#define _UAPI_ASM_X86_SIGCONTEXT_H

#include 

#include 

#define FP_XSTATE_MAGIC1	0x46505853U

#define FP_XSTATE_MAGIC2	0x46505845U

#define FP_XSTATE_MAGIC2_SIZE	sizeof(FP_XSTATE_MAGIC2)

/*

 * bytes 464..511 in the current 512byte layout of fxsave/fxrstor frame

 * are reserved for SW usage. On cpu's supporting xsave/xrstor, these bytes

 * are used to extended the fpstate pointer in the sigcontext, which now

 * includes the extended state information along with fpstate information.

 *

 * Presence of FP_XSTATE_MAGIC1 at the beginning of this SW reserved

 * area and FP_XSTATE_MAGIC2 at the end of memory layout

 * (extended_size - FP_XSTATE_MAGIC2_SIZE) indicates the presence of the

 * extended state information in the memory layout pointed by the fpstate

 * pointer in sigcontext.

 */

struct _fpx_sw_bytes {

	__u32 magic1;		/* FP_XSTATE_MAGIC1 */

	__u32 extended_size;	/* total size of the layout referred by

				 * fpstate pointer in the sigcontext.

				 */

	__u64 xstate_bv;

				/* feature bit mask (including fp/sse/extended

				 * state) that is present in the memory

				 * layout.

				 */

	__u32 xstate_size;	/* actual xsave state size, based on the

				 * features saved in the layout.

				 * 'extended_size' will be greater than

				 * 'xstate_size'.

				 */

	__u32 padding[7];	/*  for future use. */

};

#ifdef __i386__

/*

 * As documented in the iBCS2 standard..

 *

 * The first part of "struct _fpstate" is just the normal i387

 * hardware setup, the extra "status" word is used to save the

 * coprocessor status word before entering the handler.

 *

 * Pentium III FXSR, SSE support

 *	Gareth Hughes , May 2000

 *

 * The FPU state data structure has had to grow to accommodate the

 * extended FPU state required by the Streaming SIMD Extensions.

 * There is no documented standard to accomplish this at the moment.

 */

struct _fpreg {

	unsigned short significand[4];

	unsigned short exponent;

};

struct _fpxreg {

	unsigned short significand[4];

	unsigned short exponent;

	unsigned short padding[3];

};

struct _xmmreg {

	unsigned long element[4];

};

struct _fpstate {

	/* Regular FPU environment */

	unsigned long	cw;

	unsigned long	sw;

	unsigned long	tag;

	unsigned long	ipoff;

	unsigned long	cssel;

	unsigned long	dataoff;

	unsigned long	datasel;

	struct _fpreg	_st[8];

	unsigned short	status;

	unsigned short	magic;		/* 0xffff = regular FPU data only */

	/* FXSR FPU environment */

	unsigned long	_fxsr_env[6];	/* FXSR FPU env is ignored */

	unsigned long	mxcsr;

	unsigned long	reserved;

	struct _fpxreg	_fxsr_st[8];	/* FXSR FPU reg data is ignored */

	struct _xmmreg	_xmm[8];

	unsigned long	padding1[44];

	union {

		unsigned long	padding2[12];

		struct _fpx_sw_bytes sw_reserved; /* represents the extended

						   * state info */

	};

};

#define X86_FXSR_MAGIC		0x0000

#ifndef __KERNEL__

/*

 * User-space might still rely on the old definition:

 */

struct sigcontext {

	unsigned short gs, __gsh;

	unsigned short fs, __fsh;

	unsigned short es, __esh;

	unsigned short ds, __dsh;

	unsigned long edi;

	unsigned long esi;

	unsigned long ebp;

	unsigned long esp;

	unsigned long ebx;

	unsigned long edx;

	unsigned long ecx;

	unsigned long eax;

	unsigned long trapno;

	unsigned long err;

	unsigned long eip;

	unsigned short cs, __csh;

	unsigned long eflags;

	unsigned long esp_at_signal;

	unsigned short ss, __ssh;

	struct _fpstate __user *fpstate;

	unsigned long oldmask;

	unsigned long cr2;

};

#endif /* !__KERNEL__ */

#else /* __i386__ */

/* FXSAVE frame */

/* Note: reserved1/2 may someday contain valuable data. Always save/restore

   them when you change signal frames. */

struct _fpstate {

	__u16	cwd;

	__u16	swd;

	__u16	twd;		/* Note this is not the same as the

				   32bit/x87/FSAVE twd */

	__u16	fop;

	__u64	rip;

	__u64	rdp;

	__u32	mxcsr;

	__u32	mxcsr_mask;

	__u32	st_space[32];	/* 8*16 bytes for each FP-reg */

	__u32	xmm_space[64];	/* 16*16 bytes for each XMM-reg  */

	__u32	reserved2[12];

	union {

		__u32	reserved3[12];

		struct _fpx_sw_bytes sw_reserved; /* represents the extended

						   * state information */

	};

};

#ifndef __KERNEL__

/*

 * User-space might still rely on the old definition:

 */

struct sigcontext {

	__u64 r8;

	__u64 r9;

	__u64 r10;

	__u64 r11;

	__u64 r12;

	__u64 r13;

	__u64 r14;

	__u64 r15;

	__u64 rdi;

	__u64 rsi;

	__u64 rbp;

	__u64 rbx;

	__u64 rdx;

	__u64 rax;

	__u64 rcx;

	__u64 rsp;

	__u64 rip;

	__u64 eflags;		/* RFLAGS */

	__u16 cs;

	__u16 gs;

	__u16 fs;

	__u16 __pad0;

	__u64 err;

	__u64 trapno;

	__u64 oldmask;

	__u64 cr2;

	struct _fpstate __user *fpstate;	/* zero when no FPU context */

#ifdef __ILP32__

	__u32 __fpstate_pad;

#endif

	__u64 reserved1[8];

};

#endif /* !__KERNEL__ */

#endif /* !__i386__ */

struct _xsave_hdr {

	__u64 xstate_bv;

	__u64 reserved1[2];

	__u64 reserved2[5];

};

struct _ymmh_state {

	/* 16 * 16 bytes for each YMMH-reg */

	__u32 ymmh_space[64];

};

/*

 * Extended state pointed by the fpstate pointer in the sigcontext.

 * In addition to the fpstate, information encoded in the xstate_hdr

 * indicates the presence of other extended state information

 * supported by the processor and OS.

 */

struct _xstate {

	struct _fpstate fpstate;

	struct _xsave_hdr xstate_hdr;

	struct _ymmh_state ymmh;

	/* new processor state extensions go here */

};

#endif /* _UAPI_ASM_X86_SIGCONTEXT_H */