X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Fc-call.lisp;h=f2bd52a6f7e3a848052b55a0d2448f68bc8f9bc1;hb=dc33d6a6b84f8338e603759cec8e25da29055d50;hp=cb7f2daa546b55fb70cd04e06f887916e09ceeea;hpb=3a618201c9f2370bb8784217a866d000371769e5;p=sbcl.git

diff --git a/src/compiler/x86/c-call.lisp b/src/compiler/x86/c-call.lisp
index cb7f2da..f2bd52a 100644
--- a/src/compiler/x86/c-call.lisp
+++ b/src/compiler/x86/c-call.lisp
@@ -181,19 +181,28 @@
                                     ,@(new-args))))))
         (sb!c::give-up-ir1-transform))))
 
+(define-vop (foreign-symbol-sap)
+  (:translate foreign-symbol-sap)
+  (:policy :fast-safe)
+  (:args)
+  (:arg-types (:constant simple-string))
+  (:info foreign-symbol)
+  (:results (res :scs (sap-reg)))
+  (:result-types system-area-pointer)
+  (:generator 2
+   (inst lea res (make-fixup foreign-symbol :foreign))))
 
-
-
-(define-vop (foreign-symbol-address)
-  (:translate foreign-symbol-address)
+#!+linkage-table
+(define-vop (foreign-symbol-dataref-sap)
+  (:translate foreign-symbol-dataref-sap)
   (:policy :fast-safe)
   (:args)
-  (:arg-types (:constant simple-base-string))
+  (:arg-types (:constant simple-string))
   (:info foreign-symbol)
   (:results (res :scs (sap-reg)))
   (:result-types system-area-pointer)
   (:generator 2
-   (inst lea res (make-fixup (extern-alien-name foreign-symbol) :foreign))))
+   (inst mov res (make-fixup foreign-symbol :foreign-dataref))))
 
 (define-vop (call-out)
   (:args (function :scs (sap-reg))
@@ -212,7 +221,7 @@
   (:generator 0
     (cond ((policy node (> space speed))
 	   (move eax function)
-	   (inst call (make-fixup (extern-alien-name "call_into_c") :foreign)))
+	   (inst call (make-fixup "call_into_c" :foreign)))
 	  (t
 	   ;; Setup the NPX for C; all the FP registers need to be
 	   ;; empty; pop them all.
@@ -260,6 +269,8 @@
       (let ((delta (logandc2 (+ amount 3) 3)))
 	(inst add esp-tn delta)))
     (when (policy node (= sb!c::float-accuracy 3))
+      (inst fnstcw (make-ea :word :base esp-tn))
+      (inst wait)
       (inst and (make-ea :word :base esp-tn) #xfeff)
       (inst fldcw (make-ea :word :base esp-tn))
       (inst wait)
@@ -344,3 +355,59 @@
   (:generator 2
     (inst add esp-tn (fixnumize number))))
 
+#-sb-xc-host
+(defun alien-callback-accessor-form (type sp offset)
+  `(deref (sap-alien (sap+ ,sp ,offset) (* ,type))))
+
+#-sb-xc-host
+(defun alien-callback-assembler-wrapper (index return-type arg-types)
+  "Cons up a piece of code which calls call-callback with INDEX and a
+pointer to the arguments."
+  (declare (ignore arg-types))
+  (let* ((segment (make-segment))
+	 (eax eax-tn)
+	 (edx edx-tn)
+	 (ebp ebp-tn)
+	 (esp esp-tn)
+	 ([ebp-8] (make-ea :dword :base ebp :disp -8))
+	 ([ebp-4] (make-ea :dword :base ebp :disp -4)))
+    (assemble (segment)
+	      (inst push ebp)			    ; save old frame pointer
+	      (inst mov  ebp esp)		    ; establish new frame
+	      (inst mov  eax esp)		    ; 
+	      (inst sub  eax 8)		            ; place for result 
+	      (inst push eax)			    ; arg2
+	      (inst add  eax 16)		    ; arguments  
+	      (inst push eax)			    ; arg1
+	      (inst push (ash index 2))		    ; arg0
+	      (inst push (get-lisp-obj-address #'enter-alien-callback)) ; function
+	      (inst mov  eax (foreign-symbol-address "funcall3"))
+	      (inst call eax)
+	      ;; now put the result into the right register
+	      (cond
+		((and (alien-integer-type-p return-type)
+		      (eql (alien-type-bits return-type) 64))
+		 (inst mov eax [ebp-8])
+		 (inst mov edx [ebp-4]))
+		((or (alien-integer-type-p return-type)
+		     (alien-pointer-type-p return-type)
+		     (alien-type-= #.(parse-alien-type 'system-area-pointer nil)
+				   return-type))
+		 (inst mov eax [ebp-8]))
+		((alien-single-float-type-p return-type)
+		 (inst fld  [ebp-8]))
+		((alien-double-float-type-p return-type)
+		 (inst fldd [ebp-8]))
+		((alien-void-type-p return-type))
+		(t
+		 (error "unrecognized alien type: ~A" return-type)))
+	      (inst mov esp ebp)		   ; discard frame
+	      (inst pop ebp)			   ; restore frame pointer
+	      (inst ret))
+    (finalize-segment segment)
+    ;; Now that the segment is done, convert it to a static
+    ;; vector we can point foreign code to.
+    (let ((buffer (sb!assem::segment-buffer segment)))
+      (make-static-vector (length buffer)
+			  :element-type '(unsigned-byte 8)
+			  :initial-contents buffer))))