rdtscp

Read Time-Stamp Counter and Processor ID

RDTSCP

Reads TSC into EDX:EAX and Processor ID into ECX.

Details

The Read Time-Stamp Counter and Processor ID instruction reads TSC into EDX:EAX and Processor ID into ECX.

Pseudocode Operation

// Reads TSC into EDX:EAX and Processor ID into ECX

Example

RDTSCP

Encoding

Binary Layout
0F
+0
01
+1
F9
+2
 
Format Legacy
Opcode 0F 01 F9
Extension Base

Operands