extrd_opd1 227 arch/x86/include/asm/inst.h R32_NUM extrd_opd1 \gpr extrd_opd1 230 arch/x86/include/asm/inst.h PFX_REX extrd_opd1 extrd_opd2 extrd_opd1 232 arch/x86/include/asm/inst.h MODRM 0xc0 extrd_opd1 extrd_opd2