Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 1 REV 2.3 Manual page 1641

REP/REPE/REPZ/REPNE /REPNZ—Repeat String Operation Prefix
(Continued)
IF CountReg = 0
FI;
IF (repeat prefix is REPZ or REPE) AND (ZF=0)
OR (repeat prefix is REPNZ or REPNE) AND (ZF=1)
FI;
OD;
Flags Affected
None; however, the CMPS and SCAS instructions do set the status flags in the EFLAGS
register.
Additional Itanium System Environment Exceptions
Itanium Reg Faults NaT Register Consumption Abort.
Itanium Mem FaultsVHPT Data Fault, Nested TLB Fault, Data TLB Fault, Alternate Data
Exceptions (All Operating Modes)
None; however, exceptions can be generated by the instruction a repeat prefix is
associated with.
Volume 4: Base IA-32 Instruction Reference
THEN exit WHILE loop
THEN exit WHILE loop
TLB Fault, Data Page Not Present Fault, Data NaT Page Consumption
Abort, Data Key Miss Fault, Data Key Permission Fault, Data Access
Rights Fault, Data Access Bit Fault, Data Dirty Bit Fault
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