X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-posix%2Fmacros.lisp;h=dd22a7c943bdf7c3d906f3bd4542228261f475ad;hb=8e9908b6f79b7bb52a281cfcbf0712d4b914f3cf;hp=00af8dee4b887a4b4f0f20b94e32a0b558b4e0bc;hpb=1f7401c39a46466c307938c8f6cf7db224741981;p=sbcl.git

diff --git a/contrib/sb-posix/macros.lisp b/contrib/sb-posix/macros.lisp
index 00af8de..dd22a7c 100644
--- a/contrib/sb-posix/macros.lisp
+++ b/contrib/sb-posix/macros.lisp
@@ -1,38 +1,88 @@
-(in-package :sb-posix-internal)
+(in-package :sb-posix)
 
 (define-designator filename c-string
-  (pathname  (namestring (translate-logical-pathname filename)))
+  (pathname
+   (sb-ext:native-namestring (translate-logical-pathname filename)))
   (string filename))
 
 (define-designator file-descriptor (integer 32)
-  (sb-impl::file-stream (sb-impl::fd-stream-fd file-descriptor))
+  (file-stream (sb-sys:fd-stream-fd file-descriptor))
   (fixnum file-descriptor))
 
 (define-designator sap-or-nil sb-sys:system-area-pointer
   (null (sb-sys:int-sap 0))
   (sb-sys:system-area-pointer sap-or-nil))
 
-(defun lisp-for-c-symbol (s)
-  (intern (substitute #\- #\_ (string-upcase s)) :sb-posix))
+(define-designator alien-pointer-to-anything-or-nil (* t)
+  (null (sb-alien:sap-alien (sb-sys:int-sap 0) (* t)))
+  ((alien (* t)) alien-pointer-to-anything-or-nil))
+
+(defun lisp-for-c-symbol (name)
+  (etypecase name
+    (list
+     (lisp-for-c-symbol (car name)))
+    (string
+     (let ((root (if (eql #\_ (char name 0)) (subseq name 1) name)))
+       (intern (substitute #\- #\_ (string-upcase root)) :sb-posix)))))
+
+(defun real-c-name (name)
+  (etypecase name
+    (list
+     (destructuring-bind (name &key c-name options) name
+       (if c-name
+           c-name
+           (cond #+largefile
+                 ((or (eql options :largefile)
+                      (member :largefile options))
+                  (format nil "~a_largefile" name))
+                 (t
+                  name)))))
+    (string
+     name)))
+
+(defmacro define-call-internally (lisp-name c-name return-type error-predicate
+                                  &rest arguments)
+  (if (sb-sys:find-foreign-symbol-address c-name)
+      `(progn
+        (declaim (inline ,lisp-name))
+        (defun ,lisp-name ,(mapcar #'car arguments)
+          (let ((r (alien-funcall
+                    (extern-alien
+                     ,c-name
+                     (function ,return-type
+                               ,@(mapcar
+                                  (lambda (x)
+                                    (gethash (cadr x)
+                                             *designator-types*
+                                             (cadr x)))
+                                  arguments)))
+                    ,@(mapcar (lambda (x)
+                                (if (nth-value 1
+                                               (gethash (cadr x)
+                                                        *designator-types*))
+                                    `(,(intern (symbol-name (cadr x))
+                                               :sb-posix)
+                                      ,(car x))
+                                    (car x)))
+                              arguments))))
+            (if (,error-predicate r) (syscall-error) r))))
+      `(sb-int:style-warn "Didn't find definition for ~S" ,c-name)))
 
 (defmacro define-call (name return-type error-predicate &rest arguments)
+  (let ((lisp-name (lisp-for-c-symbol name))
+        (real-c-name (real-c-name name)))
+    `(progn
+       (export ',lisp-name :sb-posix)
+       (define-call-internally ,lisp-name
+           ,real-c-name
+         ,return-type
+         ,error-predicate
+         ,@arguments))))
+
+(defmacro define-entry-point (name arglist &body body)
   (let ((lisp-name (lisp-for-c-symbol name)))
     `(progn
       (export ',lisp-name :sb-posix)
       (declaim (inline ,lisp-name))
-      (defun ,lisp-name ,(mapcar #'car arguments)
-	(let ((r (alien-funcall
-		  (extern-alien
-		   ,name
-		   (function ,return-type
-			     ,@(mapcar
-				(lambda (x)
-				  (gethash (cadr x) *designator-types* (cadr x)))
-				arguments)))
-		  ,@(mapcar (lambda (x)
-			      (if (nth-value 1 (gethash (cadr x) *designator-types*))
-				  `(,(intern (symbol-name (cadr x)) :sb-posix)
-				    ,(car x))
-				  (car x)))
-			    arguments))))
-	  (if (,error-predicate r) (syscall-error) r))))))
+      (defun ,lisp-name ,arglist
+        ,@body))))