-(in-package :sb-bsd-sockets-internal)
-
-;;;; Foreign function glue. This is the only file in the distribution
-;;;; that's _intended_ to be vendor-specific. The macros defined here
-;;;; are called from constants.lisp, which was generated from constants.ccon
-;;;; by the C compiler as driven by that wacky def-to-lisp thing.
-
-;;;; of course, the whole thing is vendor-specific actually, due to
-;;;; the way we use cmucl alien types in constants.ccon as a cheap way
-;;;; of transforming C-world alues into Lisp-world values. But if
-;;;; anyone were to port that bit to their preferred implementation, they
-;;;; wouldn't need to port all the rest of the cmucl alien interface at
-;;;; the same time
-
-;;; (def-foreign-routine ("stat" STAT ) (INTEGER 32) (FILE-NAME
-;;; C-CALL:C-STRING) (BUF (* T)) )
-
-;;; I can't help thinking this was originally going to do something a
-;;; lot more complex
-(defmacro def-foreign-routine
- (&whole it (c-name lisp-name) return-type &rest args)
- (declare (ignorable c-name lisp-name return-type args))
- `(def-alien-routine ,@(cdr it)))
-#|
-(define-c-accessor FOO-PORT SOCKADDR-IN (ARRAY (UNSIGNED 8) 2) 2 2)
-(define-c-accessor SOCKADDR-IN-FAMILY SOCKADDR-IN INTEGER 6 2)
-|#
-;;; define-c-accessor makes us a setter and a getter for changing
-;;; memory at the appropriate offset
-
-;;; (define-c-accessor STAT-ATIME STAT (INTEGER 32) 56 4)
-
-(defmacro define-c-accessor (el structure type offset length)
- (declare (ignore structure))
- (let* ((ty (cond
- ((eql type 'integer) `(,type ,(* 8 length)))
- ((eql (car type) '*) `(unsigned ,(* 8 length)))
- ((eql type 'c-string) `(unsigned ,(* 8 length)))
- ((eql (car type) 'array) (cadr type))))
- (sap-ref-? (intern (format nil "~ASAP-REF-~A"
- (if (member (car ty) '(INTEGER SIGNED))
- "SIGNED-" "")
- (cadr ty))
- (find-package "SB-SYS"))))
- (labels ((template (before after)
- `(let* ((addr (+ 8 (logandc1 7 (sb-kernel:get-lisp-obj-address ptr))))
- (sap (sb-sys:int-sap (the (unsigned-byte 32) (+ addr ,offset)))))
- (,before (,sap-ref-? sap index) ,after))))
- `(progn
- ;;(declaim (inline ,el (setf ,el)))
- (defun ,el (ptr &optional (index 0))
- (declare (optimize (speed 3)))
- (sb-sys:with-pinned-objects (ptr)
- ,(template 'prog1 nil)))
- (defconstant ,(intern (format nil "OFFSET-OF-~A" el)) ,offset)
- (defun (setf ,el) (newval ptr &optional (index 0))
- (declare (optimize (speed 3)))
- (sb-sys:with-pinned-objects (ptr)
- ,(template 'setf 'newval)))))))
-
-
-;;; make memory allocator for appropriately-sized block of memory, and
-;;; a constant to tell us how big it was anyway
-(defmacro define-c-struct (name size)
- (labels ((p (x) (intern (concatenate 'string x (symbol-name name)))))
- `(progn
- (defun ,(p "ALLOCATE-") () (make-array ,size :initial-element 0
- :element-type '(unsigned-byte 8)))
- (defconstant ,(p "SIZE-OF-") ,size)
- (defun ,(p "FREE-" ) (p) (declare (ignore p))))))
-
-(defun foreign-nullp (c)
- "C is a pointer to 0?"
- (= 0 (sb-sys:sap-int (sb-alien:alien-sap c))))
-
-;;; this could be a lot faster if I cared enough to think about it
-(defun foreign-vector (pointer size length)
- "Compose a vector of the words found in foreign memory starting at
-POINTER. Each word is SIZE bytes long; LENGTH gives the number of
-elements of the returned vector. See also FOREIGN-VECTOR-UNTIL-ZERO"
- (assert (= size 1))
- (let ((ptr
- (typecase pointer
- (sb-sys:system-area-pointer
- (sap-alien pointer (* (sb-alien:unsigned 8))))
- (t
- (sb-alien:cast pointer (* (sb-alien:unsigned 8))))))
- (result (make-array length :element-type '(unsigned-byte 8))))
- (loop for i from 0 to (1- length) by size
- do (setf (aref result i) (sb-alien:deref ptr i)))
- ;;(format t "~S~%" result)
- result))