X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/sod/blobdiff_plain/e85df3ff84611b7c790f9ffb46dfca77e2a717c0..2d8d81c52aded8f15e37b061971d493742f55751:/src/method-impl.lisp

diff --git a/src/method-impl.lisp b/src/method-impl.lisp
index 725a0ec..f0fd3fc 100644
--- a/src/method-impl.lisp
+++ b/src/method-impl.lisp
@@ -337,7 +337,7 @@ (defmethod method-entry-function-name
 		(sod-class-nickname message-class)
 		(sod-message-name message)
 		(sod-class-nickname chain-head))
-	0)))
+	*null-pointer*)))
 
 (defmethod method-entry-slot-name ((entry method-entry))
   (let* ((method (method-entry-effective-method entry))
@@ -438,15 +438,21 @@ (defmethod compute-method-entry-functions ((method basic-effective-method))
 		    (type (c-type (fun (lisp return-type)
 				       ("me" (* (class tail)))
 				       . entry-args))))
-	       (codegen-pop-function codegen name type)
+	       (codegen-pop-function codegen name type
+		"~@(~@[~A ~]entry~) function ~:_~
+		 for method `~A.~A' ~:_~
+		 via chain headed by `~A' ~:_~
+		 defined on `~A'."
+		(if parm-n "Indirect argument-tail" nil)
+		(sod-class-nickname message-class)
+		(sod-message-name message)
+		head class)
 
 	       ;; If this is a varargs method then we've made the
 	       ;; `:valist' role.  Also make the `nil' role.
 	       (when parm-n
-		 (let ((call (make-call-inst name
-					     (cons "me"
-						   (mapcar #'argument-name
-							   entry-args))))
+		 (let ((call (apply #'make-call-inst name "me"
+				    (mapcar #'argument-name entry-args)))
 		       (main (method-entry-function-name method head nil))
 		       (main-type (c-type (fun (lisp return-type)
 					       ("me" (* (class tail)))
@@ -455,14 +461,20 @@ (defmethod compute-method-entry-functions ((method basic-effective-method))
 		   (ensure-var codegen *sod-ap* c-type-va-list)
 		   (convert-stmts codegen entry-target return-type
 				  (lambda (target)
-				    (emit-inst codegen
-					       (make-va-start-inst
-						*sod-ap*
-						(argument-name parm-n)))
+				    (deliver-call codegen :void "va_start"
+						  *sod-ap* parm-n)
 				    (deliver-expr codegen target call)
-				    (emit-inst codegen
-					       (make-va-end-inst *sod-ap*))))
-		   (codegen-pop-function codegen main main-type))))))
+				    (deliver-call codegen :void "va_end"
+						  *sod-ap*)))
+		   (codegen-pop-function codegen main main-type
+		    "Variable-length argument list ~:_~
+		     entry function ~:_~
+		     for method `~A.~A' ~:_~
+		     via chain headed by `~A' ~:_~
+		     defined on `~A'."
+		(sod-class-nickname message-class)
+		(sod-message-name message)
+		head class))))))
 
       ;; Generate the method body.  We'll work out what to do with it later.
       (codegen-push codegen)
@@ -496,11 +508,15 @@ (defmethod compute-method-entry-functions ((method basic-effective-method))
 		 ;; function and call it a lot.
 		 (codegen-build-function codegen emf-name emf-type vars
 		  (nconc insts (and result
-				    (list (make-return-inst result)))))
-
-		 (let ((call (make-call-inst emf-name
-			      (cons "sod__obj" (mapcar #'argument-name
-						       emf-arg-tail)))))
+				    (list (make-return-inst result))))
+		  "Effective method function ~:_for `~A.~A' ~:_~
+		   defined on `~A'."
+		  (sod-class-nickname message-class)
+		  (sod-message-name message)
+		  (effective-method-class method))
+
+		 (let ((call (apply #'make-call-inst emf-name "sod__obj"
+				    (mapcar #'argument-name emf-arg-tail))))
 		   (dolist (tail chain-tails)
 		     (setup-entry tail)
 		     (deliver-expr codegen entry-target call)