scasq

Scan String Quadword

SCASQ

Compares RAX with memory at [RDI].

Details

The Scan String Quadword instruction compares RAX with memory at [RDI].

Pseudocode Operation

Flags <- rAX - Memory[RDI]; RDI += size

Example

SCASQ

Encoding

Binary Layout
48
+0
AF
+1
 
Format Legacy
Opcode 48 AF
Extension Base (64-bit)

Operands