umwait

User Level Monitor Wait

UMWAIT r32

Waits for store to monitored address (Low power state).

Details

The User Level Monitor Wait instruction waits for store to monitored address (Low power state).

Pseudocode Operation

// Waits for store to monitored address (Low power state)

Example

UMWAIT eax

Encoding

Binary Layout
F2
+0
0F
+1
AE
+2
ModRM
+3
 
Format Legacy
Opcode F2 0F AE /6
Extension WAITPKG

Operands

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