modifier ( op -- n )

Vocabulary

cpu.x86.assembler.private

Inputs

op

an object

Outputs

n

an object

Definition

IN: cpu.x86.assembler.private

GENERIC: modifier ( op -- n )

Methods

USING: accessors combinators cpu.x86.assembler.operands.private
cpu.x86.assembler.private kernel ;

M: indirect modifier
    dup base>> [
        displacement>> {
            { [ dup not ] [ 0 ] }
            { [ dup fits-in-byte? ] [ 1 ] }
            { [ dup immediate? ] [ 2 ] }
        } cond nip
    ] [ drop 0 ] if ;


USING: cpu.x86.assembler.operands cpu.x86.assembler.private
kernel ;

M: register modifier drop 3 ;