%unbox ( dst src func rep -- )

Vocabulary

cpu.architecture

Inputs

dst	destination register
src	source register
func	function?
rep	a representation

Outputs

None

Word description

Call a function to convert a tagged pointer into a value that can be passed to a C function, or returned from a callback.

Definition

USING: system ;

IN: cpu.architecture

HOOK: %unbox cpu ( dst src func rep -- )

Methods

USING: cpu.architecture kernel system ;

M: arm.64 %unbox 4drop ;


USING: cpu.architecture cpu.x86 cpu.x86.64 cpu.x86.assembler
system ;

M:: x86.64 %unbox ( dst src func rep -- )
    param-reg-0 src tagged-rep %copy param-reg-1 vm-reg MOV
    func f f %c-invoke dst rep %load-return ;