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diff src/share/vm/runtime/frame.cpp @ 1204:18a389214829

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6921352: JSR 292 needs its own deopt handler Summary: We need to introduce a new MH deopt handler so we can easily determine if the deopt happened at a MH call site or not. Reviewed-by: never, jrose
author twisti
date Mon, 01 Feb 2010 19:29:46 +0100
parents 24128c2ffa87
children e3a4305c6bc3
line wrap: on
line diff
--- a/src/share/vm/runtime/frame.cpp	Fri Jan 29 22:51:41 2010 -0800
+++ b/src/share/vm/runtime/frame.cpp	Mon Feb 01 19:29:46 2010 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright 1997-2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 1997-2010 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -107,7 +107,11 @@
 
 address frame::raw_pc() const {
   if (is_deoptimized_frame()) {
-    return ((nmethod*) cb())->deopt_handler_begin() - pc_return_offset;
+    nmethod* nm = cb()->as_nmethod_or_null();
+    if (nm->is_method_handle_return(pc()))
+      return nm->deopt_mh_handler_begin() - pc_return_offset;
+    else
+      return nm->deopt_handler_begin() - pc_return_offset;
   } else {
     return (pc() - pc_return_offset);
   }
@@ -269,10 +273,16 @@
   } // NeedsDeoptSuspend
 
 
-  address deopt = nm->deopt_handler_begin();
+  // If the call site is a MethodHandle call site use the MH deopt
+  // handler.
+  address deopt = nm->is_method_handle_return(pc()) ?
+    nm->deopt_mh_handler_begin() :
+    nm->deopt_handler_begin();
+
   // Save the original pc before we patch in the new one
   nm->set_original_pc(this, pc());
   patch_pc(thread, deopt);
+
 #ifdef ASSERT
   {
     RegisterMap map(thread, false);