UBFIZ ( Rd Rn lsb width -- )

Vocabulary

cpu.arm.64.assembler

Inputs

Rd	an object
Rn	an object
lsb	an object
width	an object

Outputs

None

Definition

USING: kernel math math.bitwise math.order ;

IN: cpu.arm.64.assembler

:: UBFIZ ( Rd Rn lsb width -- )
    Rn encode-width 5 +
    :> max-width lsb max-width check-unsigned-immediate drop
    width dup 1 max-width 2^ lsb - between?
    [ immediate-error ] unless drop Rd Rn lsb neg max-width bits
    width 1 - UBFM ;