rdpid

Read Processor ID

RDPID r32

Reads the processor ID (TSC_AUX) into register.

Details

The Read Processor ID instruction reads the processor ID (TSC_AUX) into register.

Pseudocode Operation

// Reads the processor ID (TSC_AUX) into register

Example

RDPID eax

Encoding

Binary Layout
F3
+0
0F
+1
C7
+2
ModRM
+3
 
Format Legacy
Opcode F3 0F C7 /7
Extension RDPID

Operands

  • dest
    32-bit general-purpose register (e.g. EAX)