102 lines
3.3 KiB
Factor
102 lines
3.3 KiB
Factor
! Copyright (C) 2004, 2006 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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IN: alien
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USING: arrays assembler compiler compiler-backend
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compiler-frontend errors generic hashtables inference inspector
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io kernel kernel-internals lists math namespaces parser
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prettyprint sequences strings words ;
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TUPLE: alien-invoke library function return parameters ;
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C: alien-invoke make-node ;
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: alien-invoke-stack ( node -- )
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dup alien-invoke-parameters length over consume-values
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dup alien-invoke-return "void" = 0 1 ? swap produce-values ;
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: alien-invoke-dlsym ( node -- symbol dll )
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dup alien-invoke-function swap alien-invoke-library
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load-library ;
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TUPLE: alien-invoke-error library symbol ;
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M: alien-invoke-error summary ( error -- )
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drop "Words calling ``alien-invoke'' cannot run in the interpreter. Compile the caller word and try again." ;
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: alien-invoke ( ... return library function parameters -- ... )
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#! Call a C library function.
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#! 'return' is a type spec, and 'parameters' is a list of
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#! type specs. 'library' is an entry in the "libraries"
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#! namespace.
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pick pick <alien-invoke-error> throw ;
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\ alien-invoke [ [ string object string object ] [ ] ]
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"infer-effect" set-word-prop
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\ alien-invoke [
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empty-node <alien-invoke>
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pop-literal nip over set-alien-invoke-parameters
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pop-literal nip over set-alien-invoke-function
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pop-literal nip over set-alien-invoke-library
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pop-literal nip over set-alien-invoke-return
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dup alien-invoke-dlsym dlsym drop
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dup alien-invoke-stack
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node,
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] "infer" set-word-prop
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: unbox-parameter ( stack# type -- node )
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c-type [ "reg-class" get "unboxer" get ] bind call ;
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: unbox-parameters ( parameters -- )
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[ unbox-parameter , ] reverse-each-parameter ;
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: objects>registers ( parameters -- )
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#! Generate code for boxing a list of C types, then generate
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#! code for moving these parameters to register on
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#! architectures where parameters are passed in registers
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#! (PowerPC, AMD64).
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dup stack-space %parameters ,
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dup unbox-parameters
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"save_stacks" f %alien-invoke ,
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\ %stack>freg move-parameters ;
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: box-return ( node -- )
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alien-invoke-return dup "void" =
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[ drop ] [ f swap box-parameter , ] if ;
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: linearize-cleanup ( node -- )
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dup alien-invoke-library library-abi "stdcall" = [
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drop
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] [
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alien-invoke-parameters stack-space %cleanup ,
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] if ;
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M: alien-invoke linearize* ( node -- )
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dup alien-invoke-parameters objects>registers
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dup alien-invoke-dlsym %alien-invoke ,
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dup linearize-cleanup
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dup box-return
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linearize-next ;
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: parse-arglist ( lst -- types stack effect )
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unpair [
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" " % [ "," ?tail drop % " " % ] each "-- " %
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] "" make ;
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: (define-c-word) ( type lib func types stack-effect -- )
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>r over create-in >r
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[ alien-invoke ] cons cons cons cons r> swap define-compound
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word r> "stack-effect" set-word-prop ;
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: define-c-word ( type lib func function-args -- )
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[ "()" subseq? not ] subset parse-arglist (define-c-word) ;
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M: compound (uncrossref)
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dup word-def \ alien-invoke swap member?
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over "infer" word-prop or [
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drop
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] [
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dup
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{ "infer-effect" "base-case" "no-effect" "terminates" }
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reset-props update-xt
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] if ;
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