Specifications

Intel
®
64 and IA-32 Architectures Software Developer’s Manual Documentation Changes 145
Documentation Changes
POPF/POPFD/POPFQ—Pop Stack into EFLAGS Register
Instruction Operand Encoding
...
POR—Bitwise Logical OR
Instruction Operand Encoding
...
Opcode Instruction Op/
En
64-Bit
Mode
Compat/
Leg Mode
Description
9D POPF A Valid Valid Pop top of stack into lower
16 bits of EFLAGS.
9D POPFD A N.E. Valid Pop top of stack into
EFLAGS.
REX.W + 9D POPFQ A Valid N.E. Pop top of stack and zero-
extend into RFLAGS.
Op/En Operand 1 Operand 2 Operand 3 Operand 4
ANA NA NA NA
Opcode Instruction Op/
En
64-Bit
Mode
Compat/
Leg Mode
Description
0F EB /r POR mm, mm/m64 A Valid Valid Bitwise OR of mm/m64 and
mm.
66 0F EB /r POR xmm1,
xmm2/m128
A Valid Valid Bitwise OR of xmm2/m128
and xmm1.
Op/En Operand 1 Operand 2 Operand 3 Operand 4
A ModRM:reg (r, w) ModRM:r/m (r) NA NA