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AMD Confidential
User Manual September 12
th
, 2008
Appendix A 217
Instruction
Supported
Mnemonic
Opcode
Description
SHRD reg/mem16,reg16,imm8
0F AC /r ib
Shift bits of a 16-bit destination
register or memory operand to the
right the number of bits specified in
an 8-bit immediate value, while
shifting in bits from the second
operand.
SHRD reg/mem16,reg16,CL
0F AD /r
Shift bits of a 16-bit destination
register or memory operand to the
right the number of bits specified in
the CL register, while shifting in
bits from the second operand.
SHRD reg/mem32,reg32,imm8
0F AC /r ib
Shift bits of a 32-bit destination
register or memory operand to the
right the number of bits specified in
an 8-bit immediate value, while
shifting in bits from the second
operand.
SHRD reg/me326,reg32,CL
0F AD /r
Shift bits of a 32-bit destination
register or memory operand to the
right the number of bits specified in
the CL register, while shifting in
bits from the second operand.
SHRD reg/mem64,reg64,imm8
0F AC /r ib
Shift bits of a 64-bit destination
register or memory operand to the
right the number of bits specified in
an 8-bit immediate value, while
shifting in bits from the second
operand.
SHRD reg/mem16,reg16,CL
0F AD /r
Shift bits of a 64-bit destination
register or memory operand to the
right the number of bits specified in
the CL register, while shifting in
bits from the second operand.
STC
F9
Set the carry flag (CF) to 1.
STD
FD
Set the direction flag (DF) to 1.
STOS reg8
AA
Store the contents of the AL register
to ES:rDI, and then increment or
decrement rDI.
STOS reg16
AB
Store the contents of the AX register
to ES:rDI, and then increment or
decrement rDI.
STOS reg32
AB
Store the contents of the EAX
register to ES:rDI, and then
increment or decrement rDI.
STOS reg64
AB
Store the contents of the RAX
register to ES:rDI, and then
increment or decrement rDI.
STOSB
AA
Store the contents of the AL register
to ES:rDI, and then increment or
decrement rDI.
STOSW
AB
Store the contents of the AX register
to ES:rDI, and then increment or
decrement rDI.
STOSD
AB
Store the contents of the EAX
register to ES:rDI, and then
increment or decrement rDI.
STOSQ
AB
Store the contents of the RAX
register to ES:rDI, and then
increment or decrement rDI.
SUB AL,imm8
2C ib
Subtract an immediate 8-bit value
from the AL register and store the
result in AL.
SUB AX,imm16
2D iw
Subtract an immediate 16-bit value
from the AX register and store the
result in AX.
SUB EAX,imm32
2D id
Subtract an immediate 32-bit value
from the EAX register and store the
result in EAX.
SUB RAX,imm32
2D id
Subtract a sign-extended immediate
32-bit value from the RAX register
and store the result in RAX.
SUB reg/mem8,imm8
80 /5 ib
Subtract an immediate 8-bit value
from an 8-bit destination register or
memory location.