pshufb_opd1 208 arch/x86/include/asm/inst.h XMM_NUM pshufb_opd1 \xmm1 pshufb_opd1 211 arch/x86/include/asm/inst.h PFX_REX pshufb_opd1 pshufb_opd2 pshufb_opd1 213 arch/x86/include/asm/inst.h MODRM 0xc0 pshufb_opd1 pshufb_opd2