X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fhppa%2Fcall.lisp;h=8c004dbdbaf3b440b4bb62120ce2bf886e58a68e;hb=37b93fe46f304244d1c69c06b82a22252e393630;hp=6ec58b6b3cd682f43bc971ece6c4bcacab77cf1d;hpb=b46345044a6b9e2db26700e297daedb05307919b;p=sbcl.git

diff --git a/src/compiler/hppa/call.lisp b/src/compiler/hppa/call.lisp
index 6ec58b6..8c004db 100644
--- a/src/compiler/hppa/call.lisp
+++ b/src/compiler/hppa/call.lisp
@@ -127,6 +127,24 @@
         (inst addi (- (bytes-needed-for-non-descriptor-stack-frame))
               nfp val)))))
 
+;;; 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)
   (:ignore copy-more-arg-follows)
@@ -399,6 +417,15 @@ default-value-8
               nvals)
   (:temporary (:scs (non-descriptor-reg)) temp))
 
+
+;;; This hook in the codegen pass lets us insert code before fall-thru entry
+;;; points, local-call entry points, and tail-call entry points.  The default
+;;; does nothing.
+(defun emit-block-header (start-label trampoline-label fall-thru-p alignp)
+  (declare (ignore fall-thru-p alignp))
+  (when trampoline-label
+    (emit-label trampoline-label))
+  (emit-label start-label))
 
 
 ;;;; Local call with unknown values convention return:
@@ -774,12 +801,7 @@ default-value-8
                 (insert-step-instrumenting (callable-tn)
                   ;; Conditionally insert a conditional trap:
                   (when step-instrumenting
-                    ;; Get the symbol-value of SB!IMPL::*STEPPING*
-                    (inst ldw (- (+ symbol-value-slot
-                                    (truncate (static-symbol-offset 'sb!impl::*stepping*)
-                                    n-word-bytes))
-                                 other-pointer-lowtag)
-                              null-tn stepping)
+                    (load-symbol-value stepping sb!impl::*stepping*)
                     ;; If it's not NIL, trap.
                     ;(inst comb := stepping null-tn step-done-label)
                     (inst comb := null-tn null-tn step-done-label :nullify t)
@@ -1255,12 +1277,7 @@ default-value-8
   (:policy :fast-safe)
   (:vop-var vop)
   (:generator 3
-    ;; Get the symbol-value of SB!IMPL::*STEPPING*
-    (inst ldw (- (+ symbol-value-slot
-                    (truncate (static-symbol-offset 'sb!impl::*stepping*)
-                              n-word-bytes))
-                 other-pointer-lowtag)
-              null-tn stepping)
+    (load-symbol-value stepping sb!impl::*stepping*)
     ;; If it's not NIL, trap.
     (inst comb := stepping null-tn DONE :nullify t)
     ;; CONTEXT-PC will be pointing here when the interrupt is handled,