bfc

Bit Field Clear (Thumb)

BFC <Rd>, #<lsb>, #<width>

Clears a bitfield in a register.

Details

The Bit Field Clear instruction clears a bitfield in a register.

Pseudocode Operation

IF condition THEN PC ← target

Example

BFC r0, #0, #width

Encoding

Binary Layout
11110011011011110000
Rd
0
imm3
imm2
 
Format Thumb Bitfield
Opcode 0xF36F0000
Extension A32 (Base)

Operands

  • Rd
    Destination general-purpose register
  • lsb
    Start
  • width
    Width