aesenc_opd1 256 arch/x86/include/asm/inst.h XMM_NUM aesenc_opd1 \xmm1 aesenc_opd1 259 arch/x86/include/asm/inst.h PFX_REX aesenc_opd1 aesenc_opd2 aesenc_opd1 261 arch/x86/include/asm/inst.h MODRM 0xc0 aesenc_opd1 aesenc_opd2