udf

Undefined Instruction (Thumb)

UDF #<imm>

Permanently undefined instruction (Thumb).

Details

The Undefined Instruction instruction permanently undefined instruction (Thumb).

Pseudocode Operation

// Permanently undefined instruction (Thumb)

Example

UDF #16

Encoding

Binary Layout
11011110
imm8
 
Format Thumb System
Opcode 0xDE00
Extension T32 (Thumb)

Operands

  • imm
    ID