%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 cpu.arm.64 cpu.arm.64.assembler system ;

M:: arm.64 %unbox ( DST SRC func rep -- )
    arg1 SRC tagged-rep %copy arg2 VM MOV func f f %c-invoke
    DST rep %load-return ;


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 ;