1.0.44.12: sparc: Implement ANCESTOR-FRAME VOPs.

[sbcl.git] / src / compiler / sparc / call.lisp

diff --git a/src/compiler/sparc/call.lisp b/src/compiler/sparc/call.lisp
index 8bd2e54..73b64c7 100644 (file)
--- a/src/compiler/sparc/call.lisp
+++ b/src/compiler/sparc/call.lisp
@@ -124,6 +124,23 @@
       (when nfp
         (inst add val nfp (bytes-needed-for-non-descriptor-stack-frame))))))
 
+;;; Accessing a slot from an earlier stack frame is definite hackery.
+(define-vop (ancestor-frame-ref)
+  (:args (frame-pointer :scs (descriptor-reg))
+         (variable-home-tn :load-if nil))
+  (:results (value :scs (descriptor-reg any-reg)))
+  (:policy :fast-safe)
+  (:generator 4
+    (aver (sc-is variable-home-tn control-stack))
+    (loadw value frame-pointer (tn-offset variable-home-tn))))
+(define-vop (ancestor-frame-set)
+  (:args (frame-pointer :scs (descriptor-reg))
+         (value :scs (descriptor-reg any-reg)))
+  (:results (variable-home-tn :load-if nil))
+  (:policy :fast-safe)
+  (:generator 4
+    (aver (sc-is variable-home-tn control-stack))
+    (storew value frame-pointer (tn-offset variable-home-tn))))
 
 (define-vop (xep-allocate-frame)
   (:info start-lab copy-more-arg-follows)