Specifications

Intel
®
64 and IA-32 Architectures Software Developer’s Manual Documentation Changes 101
Documentation Changes
MOVQ—Move Quadword
Instruction Operand Encoding
...
MOVQ2DQ—Move Quadword from MMX Technology to XMM Register
Instruction Operand Encoding
...
Opcode Instruction Op/
En
64-Bit
Mode
Compat/
Leg Mode
Description
0F 6F /r MOVQ mm,
mm/m64
A Valid Valid Move quadword from
mm/m64 to mm.
0F 7F /r MOVQ mm/m64,
mm
B Valid Valid Move quadword from mm to
mm/m64.
F3 0F 7E MOVQ xmm1,
xmm2/m64
A Valid Valid Move quadword from
xmm2/mem64 to xmm1.
66 0F D6 MOVQ
xmm2/m64,
xmm1
BValid Valid Move quadword from xmm1
to xmm2/mem64.
Op/En Operand 1 Operand 2 Operand 3 Operand 4
A ModRM:reg (w) ModRM:r/m (r) NA NA
B ModRM:r/m (w) ModRM:reg (r) NA NA
Opcode Instruction Op/
En
64-Bit
Mode
Compat/
Leg Mode
Description
F3 0F D6 MOVQ2DQ xmm,
mm
A Valid Valid Move quadword from mmx
to low quadword of xmm.
Op/En Operand 1 Operand 2 Operand 3 Operand 4
A ModRM:reg (w) ModRM:reg (r) NA NA