rdfsbase

Read FS Base

RDFSBASE r64

Reads the FS base address into a register.

Details

The Read FS Base instruction reads the FS base address into a register.

Pseudocode Operation

// Reads the FS base address into a register

Example

RDFSBASE rax

Encoding

Binary Layout
F3
+0
0F
+1
AE
+2
ModRM
+3
 
Format Legacy
Opcode F3 0F AE /0
Extension FSGSBASE

Operands

  • dest
    64-bit general-purpose register (e.g. RAX)