User manual

3-256 Vol. 2A CWD/CDQ/CQO—Convert Word to Doubleword/Convert Doubleword to Quadword
INSTRUCTION SET REFERENCE, A-M
RDX ← SignExtend(RAX); FI;
FI;
Flags Affected
None.
Exceptions (All Operating Modes)
#UD If the LOCK prefix is used.