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AMD Confidential
User Manual September 12
th
, 2008
Appendix A 211
Instruction
Supported
Mnemonic
Opcode
Description
RCL reg/mem64,1
RCR
D1 /3
Rotate the 65 bits consisting of the
carry flag and a 64-bit register or
memory location right 1 bit.
RCR reg/mem64,CL
D3 /3
Rotate the 65 bits consisting of the
carry flag and a 64-bit register or
memory location right the number of
bits specified in the CL register.
RCR reg/mem64,imm8
C1 /3 ib
Rotate the 65 bits consisting of the
carry flag and a 64-bit register or
memory location right the number of
bits specified by an 8-bit immediate
value.
RET
C3
Near return to the calling procedure.
RET imm16
C2 iw
Near return to the calling procedure
and then pop of the specified number
of bytes from the stack.
RETF
CB
Far return to the calling procedure.
RETF imm16
CA iw
Far return to the calling procedure
and then pop of the specified number
of bytes from the stack.
ROL reg/imm8,1
D0 /0
Rotate an 8-bit register or memory
operand left 1 bit.
ROL reg/mem8,CL
D2 /0
Rotate an 8-bit register or memory
operand left the number of bits
specified in the CL register.
ROL reg/mem8,imm8
C0 /0 ib
Rotate an 8-bit register or memory
operand left the number of bits
specified by an 8-bit immediate
value.
ROL reg/imm16,1
D1 /0
Rotate a 16-bit register or memory
operand left 1 bit.
ROL reg/mem16,CL
D3 /0
Rotate a 16-bit register or memory
operand left the number of bits
specified in the CL register.
ROL reg/mem16,imm8
C1 /0 ib
Rotate a 16-bit register or memory
operand left the number of bits
specified by an 8-bit immediate
value.
ROL reg/imm32,1
D1 /0
Rotate a 32-bit register or memory
operand left 1 bit.
ROL reg/mem32,CL
D3 /0
Rotate a 32-bit register or memory
operand left the number of bits
specified in the CL register.
ROL reg/mem32,imm8
C1 /0 ib
Rotate a 32-bit register or memory
operand left the number of bits
specified by an 8-bit immediate
value.
ROL reg/imm64,1
D1 /0
Rotate a 64-bit register or memory
operand left 1 bit.
ROL reg/mem64,CL
D3 /0
Rotate a 64-bit register or memory
operand left the number of bits
specified in the CL register.
ROL reg/mem64,imm8
C1 /0 ib
Rotate a 64-bit register or memory
operand left the number of bits
specified by an 8-bit immediate
value.
ROR reg/imm8,1
D0 /0
Rotate an 8-bit register or memory
operand right 1 bit.
ROR reg/mem8,CL
D2 /0
Rotate an 8-bit register or memory
operand right the number of bits
specified in the CL register.
ROR reg/mem8,imm8
C0 /0 ib
Rotate an 8-bit register or memory
operand right the number of bits
specified by an 8-bit immediate
value.
ROR reg/imm16,1
D1 /0
Rotate a 16-bit register or memory
operand left 1 bit.
ROR reg/mem16,CL
D3 /0
Rotate a 16-bit register or memory
operand right the number of bits
specified in the CL register.
ROR reg/mem16,imm8
C1 /0 ib
Rotate a 16-bit register or memory
operand right the number of bits
specified by an 8-bit immediate
value.