root/include/asm-x86/sigcontext32.h

INCLUDED FROM

#ifndef ASM_X86__SIGCONTEXT32_H
#define ASM_X86__SIGCONTEXT32_H

/* signal context for 32bit programs. */

#define X86_FXSR_MAGIC          0x0000

struct _fpreg {
        unsigned short significand[4];
        unsigned short exponent;
};

struct _fpxreg {
        unsigned short significand[4];
        unsigned short exponent;
        unsigned short padding[3];
};

struct _xmmreg {
        __u32   element[4];
};

/* FSAVE frame with extensions */
struct _fpstate_ia32 {
        /* Regular FPU environment */
        __u32   cw;
        __u32   sw;
        __u32   tag;    /* not compatible to 64bit twd */
        __u32   ipoff;
        __u32   cssel;
        __u32   dataoff;
        __u32   datasel;
        struct _fpreg   _st[8];
        unsigned short  status;
        unsigned short  magic;          /* 0xffff = regular FPU data only */

        /* FXSR FPU environment */
        __u32   _fxsr_env[6];
        __u32   mxcsr;
        __u32   reserved;
        struct _fpxreg  _fxsr_st[8];
        struct _xmmreg  _xmm[8];        /* It's actually 16 */
        __u32   padding[44];
        union {
                __u32 padding2[12];
                struct _fpx_sw_bytes sw_reserved;
        };
};

struct sigcontext_ia32 {
       unsigned short gs, __gsh;
       unsigned short fs, __fsh;
       unsigned short es, __esh;
       unsigned short ds, __dsh;
       unsigned int di;
       unsigned int si;
       unsigned int bp;
       unsigned int sp;
       unsigned int bx;
       unsigned int dx;
       unsigned int cx;
       unsigned int ax;
       unsigned int trapno;
       unsigned int err;
       unsigned int ip;
       unsigned short cs, __csh;
       unsigned int flags;
       unsigned int sp_at_signal;
       unsigned short ss, __ssh;
       unsigned int fpstate;            /* really (struct _fpstate_ia32 *) */
       unsigned int oldmask;
       unsigned int cr2;
};

#endif /* ASM_X86__SIGCONTEXT32_H */