X87INSTR

Metadatacopy
struct X87INSTR {
    unsigned long Opcode1 : 3;/* 0x0:0  4 */
    unsigned long Escape : 5;/* 0x0:3  4 */
    unsigned long Reg : 3;/* 0x0:8  4 */
    unsigned long Opcode2 : 3;/* 0x0:11  4 */
    unsigned long Mod : 2;/* 0x0:14  4 */
    unsigned long Pad : 16;/* 0x0:16  4 */
};
/* source: Windows 2000 DDK (February 2000) i386 libcntpr.lib CodeView type records; build 2195 per the DDK's ntverp.h */