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#ifndef _ASMi386_SIGCONTEXT_H
#define _ASMi386_SIGCONTEXT_H

#include <linux/compiler.h>

/*
 * 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 <gareth@valinux.com>, 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   padding[56];
};

#define X86_FXSR_MAGIC          0x0000

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