struct DWORDREGS {
	unsigned int eax;
	unsigned int ebx;
	unsigned int ecx;
	unsigned int edx;
	unsigned int esi;
	unsigned int edi;
	unsigned int cflag;
};

/* word registers */

struct WORDREGS {
	unsigned short ax;  __FILLER(_1)
	unsigned short bx;  __FILLER(_2)
	unsigned short cx;  __FILLER(_3)
	unsigned short dx;  __FILLER(_4)
	unsigned short si;  __FILLER(_5)
	unsigned short di;  __FILLER(_6)
	unsigned int cflag;
};

/* byte registers */

struct BYTEREGS {
	unsigned char al, ah;  __FILLER(_1)
	unsigned char bl, bh;  __FILLER(_2)
	unsigned char cl, ch;  __FILLER(_3)
	unsigned char dl, dh;  __FILLER(_4)
};

/* general purpose registers union - overlays the corresponding dword,
 * word, and byte registers.
 */

union REGS {
	struct DWORDREGS x;
	struct WORDREGS  w;
	struct BYTEREGS  h;
};
#define _REGS REGS

struct SREGS {
	unsigned short es, cs, ss, ds;
	unsigned short fs, gs;
};
#define _SREGS SREGS