;;;-*- Mode: Lisp; Package: CCL -*- ;;; ;;; Copyright (C) 2007-2009 Clozure Associates and contributors ;;; This file is part of Clozure CL. ;;; ;;; Clozure CL is licensed under the terms of the Lisp Lesser GNU Public ;;; License , known as the LLGPL and distributed with Clozure CL as the ;;; file "LICENSE". The LLGPL consists of a preamble and the LGPL, ;;; which is distributed with Clozure CL as the file "LGPL". Where these ;;; conflict, the preamble takes precedence. ;;; ;;; Clozure CL is referenced in the preamble as the "LIBRARY." ;;; ;;; The LLGPL is also available online at ;;; http://opensource.franz.com/preamble.html (in-package "CCL") ;;; Win64: ;;; Structures are never actually passed by value; the caller ;;; instead passes a pointer to the structure or a copy of it. ;;; (defun win64::record-type-returns-structure-as-first-arg (rtype) (when (and rtype (not (typep rtype 'unsigned-byte)) (not (member rtype *foreign-representation-type-keywords* :test #'eq))) (let* ((ftype (if (typep rtype 'foreign-type) rtype (parse-foreign-type rtype)))) (and (typep ftype 'foreign-record-type) (> (ensure-foreign-type-bits ftype) 64))))) (defun win64::expand-ff-call (callform args &key (arg-coerce #'null-coerce-foreign-arg) (result-coerce #'null-coerce-foreign-result)) (let* ((result-type-spec (or (car (last args)) :void)) (enclosing-form nil) (result-form nil)) (multiple-value-bind (result-type error) (ignore-errors (parse-foreign-type result-type-spec)) (if error (setq result-type-spec :void result-type *void-foreign-type*) (setq args (butlast args))) (collect ((argforms)) (when (eq (car args) :monitor-exception-ports) (argforms (pop args))) (when (typep result-type 'foreign-record-type) (setq result-form (pop args)) (if (win64::record-type-returns-structure-as-first-arg result-type) (progn (setq result-type *void-foreign-type* result-type-spec :void) (argforms :address) (argforms result-form)) ;; This only happens in the SVR4 ABI. (progn (setq result-type (parse-foreign-type :unsigned-doubleword) result-type-spec :unsigned-doubleword enclosing-form `(setf (%%get-unsigned-longlong ,result-form 0)))))) (unless (evenp (length args)) (error "~s should be an even-length list of alternating foreign types and values" args)) (do* ((args args (cddr args))) ((null args)) (let* ((arg-type-spec (car args)) (arg-value-form (cadr args))) (if (or (member arg-type-spec *foreign-representation-type-keywords* :test #'eq) (typep arg-type-spec 'unsigned-byte)) (progn (argforms arg-type-spec) (argforms arg-value-form)) (let* ((ftype (parse-foreign-type arg-type-spec))) (if (typep ftype 'foreign-record-type) (progn (argforms :address) (argforms arg-value-form)) (progn (argforms (foreign-type-to-representation-type ftype)) (argforms (funcall arg-coerce arg-type-spec arg-value-form)))))))) (argforms (foreign-type-to-representation-type result-type)) (let* ((call (funcall result-coerce result-type-spec `(,@callform ,@(argforms))))) (if enclosing-form `(,@enclosing-form ,call) call)))))) ;;; Return 7 values: ;;; A list of RLET bindings ;;; A list of LET* bindings ;;; A list of DYNAMIC-EXTENT declarations for the LET* bindings ;;; A list of initializaton forms for (some) structure args ;;; A FOREIGN-TYPE representing the "actual" return type. ;;; A form which can be used to initialize FP-ARGS-PTR, relative ;;; to STACK-PTR. ;;; The byte offset of the foreign return address, relative to STACK-PTR (defun win64::generate-callback-bindings (stack-ptr fp-args-ptr argvars argspecs result-spec struct-result-name) (declare (ignore fp-args-ptr)) (collect ((lets) (rlets) (inits)) (let* ((rtype (parse-foreign-type result-spec))) (when (typep rtype 'foreign-record-type) (if (win64::record-type-returns-structure-as-first-arg rtype) (setq argvars (cons struct-result-name argvars) argspecs (cons :address argspecs) rtype :address) (rlets (list struct-result-name (foreign-record-type-name rtype))))) (do* ((argvars argvars (cdr argvars)) (argspecs argspecs (cdr argspecs)) (arg-num 0) (gpr-arg-offset -8) (fpr-arg-offset -40) (memory-arg-offset 48) (fp nil nil)) ((null argvars) (values (rlets) (lets) nil (inits) rtype nil 8)) (flet ((next-gpr () (if (<= (incf arg-num) 4) (prog1 gpr-arg-offset (decf gpr-arg-offset 8) (decf fpr-arg-offset 8)) (prog1 memory-arg-offset (incf memory-arg-offset 8)))) (next-fpr () (if (<= (incf arg-num) 4) (prog1 fpr-arg-offset (decf fpr-arg-offset 8) (decf gpr-arg-offset 8)) (prog1 memory-arg-offset (incf memory-arg-offset 8))))) (let* ((name (car argvars)) (spec (car argspecs)) (argtype (parse-foreign-type spec))) (if (typep argtype 'foreign-record-type) (setq argtype :address)) (let* ((access-form `(, (ecase (foreign-type-to-representation-type argtype) (:single-float (setq fp t) '%get-single-float) (:double-float (setq fp t) '%get-double-float) (:signed-doubleword '%%get-signed-longlong) (:signed-fullword '%get-signed-long) (:signed-halfword '%get-signed-word) (:signed-byte '%get-signed-byte) (:unsigned-doubleword '%%get-unsigned-longlong) (:unsigned-fullword '%get-unsigned-long) (:unsigned-halfword '%get-unsigned-word) (:unsigned-byte '%get-unsigned-byte) (:address #+nil (dynamic-extent-names name) '%get-ptr)) ,stack-ptr ,(if fp (next-fpr) (next-gpr))))) (when name (lets (list name access-form)))))))))) (defun win64::generate-callback-return-value (stack-ptr fp-args-ptr result return-type struct-return-arg) (declare (ignore fp-args-ptr)) (unless (eq return-type *void-foreign-type*) (when (typep return-type 'foreign-single-float-type) (setq result `(float ,result 0.0d0))) (let* ((return-type-keyword (if (typep return-type 'foreign-record-type) (progn (setq result `(%%get-unsigned-longlong ,struct-return-arg 0)) :unsigned-doubleword) (foreign-type-to-representation-type return-type))) (offset (case return-type-keyword ((:single-float :double-float) -24) (t -8)))) `(setf (, (case return-type-keyword (:address '%get-ptr) (:signed-doubleword '%%get-signed-longlong) (:unsigned-doubleword '%%get-unsigned-longlong) ((:double-float :single-float) '%get-double-float) (t '%get-long)) ,stack-ptr ,offset) ,result))))