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AMD Confidential
User Manual November 21
st
, 2008
Appendix A 213
Instruction
Supported
Mnemonic
Opcode
Description
SCAS mem64
AF
Compare the contents of the RAX
register with the quadword at ES:rDI,
and then increment or decrement rDI.
SCASB
AE
Compare the contents of the AL
register with the byte at ES:rDI, and
then increment or decrement rDI.
SCASW
AF
Compare the contents of the AX
register with the word at ES:rDI, and
then increment or decrement rDI.
SCASD
AF
Compare the contents of the EAX
register with the doubleword at
ES:rDI, and then increment or
decrement rDI.
SCASQ
AF
Compare the contents of the RAX
register with the quadword at ES:rDI,
and then increment or decrement rDI.
SETO reg/mem8
0F 90
Set byte if overflow (OF = 1).
SETNO reg/mem8
0F 91
Set byte if not overflow (OF = 0).
SETB reg/mem8
0F 92
Set byte if below (CF = 1).
SETC reg/mem8
0F 92
Set byte if carry (CF = 1).
SETNAE reg/mem8
0F 92
Set byte if not above or equal (CF =
1).
SETNB reg/mem8
0F 93
Set byte if not below (CF = 0).
SETNC reg/mem8
0F 93
Set byte if not carry (CF = 0).
SETAE reg/mem8
0F 93
Set byte if above or equal (CF = 0).
SETZ reg/mem8
0F 94
Set byte if zero (ZF = 1).
SETE reg/mem8
0F 94
Set byte if equal (ZF = 1).
SETNZ reg/mem8
0F 95
Set byte if not zero (ZF = 0).
SETNE reg/mem8
0F 95
Set byte if not equal (ZF = 0).
SETBE reg/mem8
0F 96
Set byte if below or equal (CF = 1 or
ZF = 1).
SETNA reg/mem8
0F 96
Set byte if not above (CF = 1 or ZF =
1).
SETNBE reg/mem8
0F 97
Set byte if not below or equal (CF =
0 and ZF = 0).
SETA reg/mem8
0F 97
Set byte if above (CF = 0 and ZF =
0).
SETS reg/mem8
0F 98
Set byte if sign (SF = 1).
SETNS reg/mem8
0F 99
Set byte if not sign (SF = 0).
SETP reg/mem8
0F 9A
Set byte if parity (PF = 1).
SETPE reg/mem8
0F 9A
Set byte if parity even (PF = 1).
SETNP reg/mem8
0F 9B
Set byte if not parity (PF = 0).
SETPO reg/mem8
0F 9B
Set byte if parity odd (PF = 0).
SETL reg/mem8
0F 9C
Set byte if less (SF <> OF).
SETNGE reg/mem8
0F 9C
Set byte if not greater or equal (SF
<> OF).
SETNL reg/mem8
0F 9D
Set byte if not less (SF =OF).
SETGE reg/mem8
0F 9D
Set byte if greater or equal (SF =
OF).
SETLE reg/mem8
0F 9E
Set byte if less or equal (ZF = 1 or
SF <> OF).
SETNG reg/mem8
0F 9E
Set byte if not greater (ZF = 1 or SF
<> OF).
SETNLE reg/mem8
0F 9F
Set byte if not less or equal (ZF = 0
and SF = OF).
SETG reg/mem8
0F 9F
Set byte if greater (ZF = 0 and SF =
OF).
SFENCE
0F AE F8
Force strong ordering of (serialized)
store operations.
SHL reg/mem8,1
D0 /4
Shift an 8-bit register or memory
location left 1 bit.