From 72dd5a7a643cd31d074ceee12e2948dc08ad9f74 Mon Sep 17 00:00:00 2001
From: never <unknown>
Date: Fri, 27 Mar 2009 14:37:42 -0700
Subject: [PATCH] 6822333: _call_stub_compiled_return address handling in SA is
 broken causing jstack to hang occasionally Reviewed-by: kvn, twisti

---
 .../classes/sun/jvm/hotspot/runtime/StubRoutines.java  | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/agent/src/share/classes/sun/jvm/hotspot/runtime/StubRoutines.java b/agent/src/share/classes/sun/jvm/hotspot/runtime/StubRoutines.java
index be55ca524..fad351b49 100644
--- a/agent/src/share/classes/sun/jvm/hotspot/runtime/StubRoutines.java
+++ b/agent/src/share/classes/sun/jvm/hotspot/runtime/StubRoutines.java
@@ -46,12 +46,18 @@ public class StubRoutines {
     Type type = db.lookupType("StubRoutines");
 
     callStubReturnAddressField = type.getAddressField("_call_stub_return_address");
-    // Only some platforms have specif return from compiled to call_stub
+    // Only some platforms have specific return from compiled to call_stub
     try {
-      callStubCompiledReturnAddressField = type.getAddressField("_call_stub_compiled_return");
+      type = db.lookupType("StubRoutines::x86");
+      if (type != null) {
+        callStubCompiledReturnAddressField = type.getAddressField("_call_stub_compiled_return");
+      }
     } catch (RuntimeException re) {
       callStubCompiledReturnAddressField = null;
     }
+    if (callStubCompiledReturnAddressField == null && VM.getVM().getCPU().equals("x86")) {
+      throw new InternalError("Missing definition for _call_stub_compiled_return");
+    }
   }
 
   public StubRoutines() {
-- 
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