0.8.14.5: Join the foreign legion!

[sbcl.git] / src / compiler / saptran.lisp

diff --git a/src/compiler/saptran.lisp b/src/compiler/saptran.lisp
index 1d6d4ee..64f067b 100644 (file)
--- a/src/compiler/saptran.lisp
+++ b/src/compiler/saptran.lisp
@@ -13,8 +13,29 @@
 \f
 ;;;; DEFKNOWNs
 
-(defknown foreign-symbol-address (simple-string) system-area-pointer
-  (movable flushable))
+#!+linkage-table
+(deftransform foreign-symbol-address-as-integer ((symbol &optional datap)
+                                                (simple-string boolean))
+  (if (and (constant-lvar-p symbol) (constant-lvar-p datap))
+      `(sap-int (foreign-symbol-address symbol datap))
+      (give-up-ir1-transform)))
+
+(deftransform foreign-symbol-address ((symbol &optional datap)
+                                     (simple-string &optional boolean))
+    #!-linkage-table
+    (if (null datap)
+       (give-up-ir1-transform)
+       `(foreign-symbol-address symbol))
+    #!+linkage-table
+    (if (and (constant-lvar-p symbol) (constant-lvar-p datap))
+       (let ((name (lvar-value symbol))
+             (datap (lvar-value datap)))
+         (if (or #+sb-xc-host t ; only static symbols on host
+                  (not datap)
+                 (find-foreign-symbol-in-table name *static-foreign-symbols*))
+             `(foreign-symbol-address ,name) ; VOP
+             `(foreign-symbol-dataref-address ,name))) ; VOP
+       (give-up-ir1-transform)))
 
 (defknown (sap< sap<= sap= sap>= sap>)
          (system-area-pointer system-area-pointer) boolean