box-return ( vregs reps c-type -- dst )

Vocabulary

compiler.cfg.builder.alien.boxing

Inputs

vregs	vregs that contains the return value of the alien call
reps	representations of the vregs
c-type	an abstract-c-type

Outputs

dst	vreg in which the boxed value, or a reference to it, will be placed

Word description

Emits instructions for boxing the return value from an alien function call.

Examples

USING: compiler.cfg.builder.alien.boxing kernel make prettyprint ; [ { 10 } { tagged-rep } int base-type box-return drop ] { } make .
{ T{ ##convert-integer { dst 118 } { src 10 } { c-type int } } }

See also

##box-alien

Definition

IN: compiler.cfg.builder.alien.boxing

GENERIC: box-return ( vregs reps c-type -- dst )

Methods

USING: alien.c-types compiler.cfg.builder.alien.boxing ;

M: abstract-c-type box-return box ;


USING: assocs classes.struct compiler.cfg.builder.alien.boxing
cpu.architecture generic kernel namespaces sequences ;

M: struct-c-type box-return
    dup return-struct-in-registers?
    [ M\ struct-c-type box-return (call-next-method) ] [
        [
            [
                [ { } assert-sequence= ] bi@
                struct-return-area get
            ] dip explode-struct-return keys
        ] keep box
    ] if ;