X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Fsparc-vm.lisp;h=3d214b51349038733689fb0e1d412c72b0371c9e;hb=c10e4afc31e25003cc2500803ceb7589232e7f6b;hp=c7f39f240a4d8f3f7b91e329412c90e763b68fa6;hpb=68fd2d2dd6f265669a8957accd8a33e62786a97e;p=sbcl.git

diff --git a/src/code/sparc-vm.lisp b/src/code/sparc-vm.lisp
index c7f39f2..3d214b5 100644
--- a/src/code/sparc-vm.lisp
+++ b/src/code/sparc-vm.lisp
@@ -95,23 +95,17 @@
 
 ;;; Given a signal context, return the floating point modes word in
 ;;; the same format as returned by FLOATING-POINT-MODES.
+
+;;; Under SunOS, we have a straightforward implementation in C:
+#!+sunos
+(define-alien-routine ("os_context_fp_control" context-floating-point-modes)
+    (sb!alien:unsigned 32)
+  (context (* os-context-t)))
+
+;;; Under Linux, we have to contend with utterly broken signal handling.
+#!+linux
 (defun context-floating-point-modes (context)
-  ;; FIXME: As of sbcl-0.6.7 and the big rewrite of signal handling for
-  ;; POSIXness and (at the Lisp level) opaque signal contexts,
-  ;; this is stubified. It needs to be rewritten as an
-  ;; alien function.
   (warn "stub CONTEXT-FLOATING-POINT-MODES")
-  ;; old code for Linux:
-  #+nil
-  (let ((cw (slot (deref (slot context 'fpstate) 0) 'cw))
-	(sw (slot (deref (slot context 'fpstate) 0) 'sw)))
-    ;;(format t "cw = ~4X~%sw = ~4X~%" cw sw)
-    ;; NOT TESTED -- Clear sticky bits to clear interrupt condition.
-    (setf (slot (deref (slot context 'fpstate) 0) 'sw) (logandc2 sw #x3f))
-    ;;(format t "new sw = ~X~%" (slot (deref (slot context 'fpstate) 0) 'sw))
-    ;; Simulate floating-point-modes VOP.
-    (logior (ash (logand sw #xffff) 16) (logxor (logand cw #xffff) #x3f)))
-
   0)
 
 ;;;; INTERNAL-ERROR-ARGS.
@@ -153,12 +147,12 @@
 				     vector-data-offset)
 			   (* length n-byte-bits))
     (let* ((index 0)
-	   (error-number (sb!c::read-var-integer vector index)))
+	   (error-number (sb!c:read-var-integer vector index)))
       (collect ((sc-offsets))
 	       (loop
 		(when (>= index length)
 		  (return))
-		(sc-offsets (sb!c::read-var-integer vector index)))
+		(sc-offsets (sb!c:read-var-integer vector index)))
 	       (values error-number (sc-offsets))))))
 
 (defun args-for-tagged-add-inst (context bad-inst)
@@ -192,10 +186,3 @@
 	       #.(error-number-or-lose 'unknown-error)))
 	    (list (sb!c::make-sc-offset descriptor-reg-sc-number reg)))))
 
-
-;;; Do whatever is necessary to make the given code component
-;;; executable.  On the sparc, we don't need to do anything, because
-;;; the i and d caches are unified.
-(defun sanctify-for-execution (component)
-  (declare (ignore component))
-  nil)