changeset 1042:4926bf2d292f

Merge
author cfang
date Thu, 29 Oct 2009 08:49:31 -0700
parents d912f17c1ae4 f875b4f472f7
children 29adffcb6a61 f334aec453a1
files
diffstat 26 files changed, 604 insertions(+), 185 deletions(-) [+]
line wrap: on
line diff
--- a/agent/make/saenv.sh	Wed Oct 28 10:37:17 2009 -0700
+++ b/agent/make/saenv.sh	Thu Oct 29 08:49:31 2009 -0700
@@ -48,8 +48,16 @@
      CPU=i386
    fi
 else
-   LD_AUDIT_32=$STARTDIR/../src/os/solaris/proc/`uname -p`/libsaproc_audit.so
-   export LD_AUDIT_32
+   # configure audit helper library if SA_ALTROOT is set
+   if [ -n "$SA_ALTROOT" ]; then
+     LD_AUDIT_32=$STARTDIR/../src/os/solaris/proc/`uname -p`/libsaproc_audit.so
+     export LD_AUDIT_32
+     if [ ! -f $LD_AUDIT_32 ]; then
+       echo "SA_ALTROOT is set and can't find libsaproc_audit.so."
+       echo "Make sure to build it with 'make natives'."
+       exit 1
+     fi
+   fi
    SA_LIBPATH=$STARTDIR/../src/os/solaris/proc/`uname -p`:$STARTDIR/solaris/`uname -p`
    OPTIONS="-Dsa.library.path=$SA_LIBPATH -Dsun.jvm.hotspot.debugger.useProcDebugger"
    CPU=sparc
--- a/agent/make/saenv64.sh	Wed Oct 28 10:37:17 2009 -0700
+++ b/agent/make/saenv64.sh	Thu Oct 29 08:49:31 2009 -0700
@@ -43,8 +43,16 @@
   fi
 fi
 
-LD_AUDIT_64=$STARTDIR/../src/os/solaris/proc/$CPU/libsaproc_audit.so
-export LD_AUDIT_64
+# configure audit helper library if SA_ALTROOT is set
+if [ -n "$SA_ALTROOT" ]; then
+  LD_AUDIT_64=$STARTDIR/../src/os/solaris/proc/$CPU/libsaproc_audit.so
+  export LD_AUDIT_64
+  if [ ! -f $LD_AUDIT_64 ]; then
+      echo "SA_ALTROOT is set and can't find libsaproc_audit.so."
+      echo "Make sure to build it with 'make natives'."
+      exit 1
+  fi
+fi
 SA_LIBPATH=$STARTDIR/../src/os/solaris/proc/$CPU:$STARTDIR/solaris/$CPU
 
 OPTIONS="-Dsa.library.path=$SA_LIBPATH -Dsun.jvm.hotspot.debugger.useProcDebugger"
--- a/agent/src/share/classes/sun/jvm/hotspot/CommandProcessor.java	Wed Oct 28 10:37:17 2009 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/CommandProcessor.java	Thu Oct 29 08:49:31 2009 -0700
@@ -926,6 +926,28 @@
                 }
             }
         },
+        new Command("dumpcodecache", "dumpcodecache", false) {
+            public void doit(Tokens t) {
+                if (t.countTokens() != 0) {
+                    usage();
+                } else {
+                    final PrintStream fout = out;
+                    final HTMLGenerator gen = new HTMLGenerator(false);
+                    CodeCacheVisitor v = new CodeCacheVisitor() {
+                            public void prologue(Address start, Address end) {
+                            }
+                            public void visit(CodeBlob blob) {
+                                fout.println(gen.genHTML(blob.instructionsBegin()));
+                            }
+                            public void epilogue() {
+                            }
+
+
+                        };
+                    VM.getVM().getCodeCache().iterate(v);
+                }
+            }
+        },
         new Command("where", "where { -a | id }", false) {
             public void doit(Tokens t) {
                 if (t.countTokens() != 1) {
--- a/agent/src/share/classes/sun/jvm/hotspot/code/CodeCache.java	Wed Oct 28 10:37:17 2009 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/code/CodeCache.java	Thu Oct 29 08:49:31 2009 -0700
@@ -173,7 +173,8 @@
     CodeBlob lastBlob = null;
     while (ptr != null && ptr.lessThan(end)) {
       try {
-        CodeBlob blob = findBlobUnsafe(ptr);
+        // Use findStart to get a pointer inside blob other findBlob asserts
+        CodeBlob blob = findBlobUnsafe(heap.findStart(ptr));
         if (blob != null) {
           visitor.visit(blob);
           if (blob == lastBlob) {
--- a/agent/src/share/classes/sun/jvm/hotspot/code/NMethod.java	Wed Oct 28 10:37:17 2009 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/code/NMethod.java	Thu Oct 29 08:49:31 2009 -0700
@@ -42,7 +42,7 @@
   /** To support simple linked-list chaining of nmethods */
   private static AddressField  osrLinkField;
   private static AddressField  scavengeRootLinkField;
-  private static CIntegerField scavengeRootStateField;
+  private static JByteField    scavengeRootStateField;
 
   /** Offsets for different nmethod parts */
   private static CIntegerField exceptionOffsetField;
@@ -92,7 +92,7 @@
     entryBCIField               = type.getCIntegerField("_entry_bci");
     osrLinkField                = type.getAddressField("_osr_link");
     scavengeRootLinkField       = type.getAddressField("_scavenge_root_link");
-    scavengeRootStateField      = type.getCIntegerField("_scavenge_root_state");
+    scavengeRootStateField      = type.getJByteField("_scavenge_root_state");
 
     exceptionOffsetField        = type.getCIntegerField("_exception_offset");
     deoptOffsetField            = type.getCIntegerField("_deoptimize_offset");
@@ -274,7 +274,7 @@
     if (Assert.ASSERTS_ENABLED) {
       Assert.that(pd != null, "scope must be present");
     }
-    return new ScopeDesc(this, pd.getScopeDecodeOffset(), pd.getReexecute());
+    return new ScopeDesc(this, pd.getScopeDecodeOffset(), pd.getObjDecodeOffset(), pd.getReexecute());
   }
 
   /** This is only for use by the debugging system, and is only
@@ -306,11 +306,11 @@
   public ScopeDesc getScopeDescNearDbg(Address pc) {
     PCDesc pd = getPCDescNearDbg(pc);
     if (pd == null) return null;
-    return new ScopeDesc(this, pd.getScopeDecodeOffset(), pd.getReexecute());
+    return new ScopeDesc(this, pd.getScopeDecodeOffset(), pd.getObjDecodeOffset(), pd.getReexecute());
   }
 
-  public Map/*<Address, PcDesc>*/ getSafepoints() {
-    Map safepoints = new HashMap(); // Map<Address, PcDesc>
+  public Map/*<Address, PCDesc>*/ getSafepoints() {
+    Map safepoints = new HashMap(); // Map<Address, PCDesc>
     sun.jvm.hotspot.debugger.Address p = null;
     for (p = scopesPCsBegin(); p.lessThan(scopesPCsEnd());
          p = p.addOffsetTo(pcDescSize)) {
--- a/agent/src/share/classes/sun/jvm/hotspot/code/PCDesc.java	Wed Oct 28 10:37:17 2009 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/code/PCDesc.java	Thu Oct 29 08:49:31 2009 -0700
@@ -36,6 +36,7 @@
 public class PCDesc extends VMObject {
   private static CIntegerField pcOffsetField;
   private static CIntegerField scopeDecodeOffsetField;
+  private static CIntegerField objDecodeOffsetField;
   private static CIntegerField pcFlagsField;
 
   static {
@@ -51,6 +52,7 @@
 
     pcOffsetField          = type.getCIntegerField("_pc_offset");
     scopeDecodeOffsetField = type.getCIntegerField("_scope_decode_offset");
+    objDecodeOffsetField   = type.getCIntegerField("_obj_decode_offset");
     pcFlagsField           = type.getCIntegerField("_flags");
   }
 
@@ -68,6 +70,10 @@
     return ((int) scopeDecodeOffsetField.getValue(addr));
   }
 
+  public int getObjDecodeOffset() {
+    return ((int) objDecodeOffsetField.getValue(addr));
+  }
+
   public Address getRealPC(NMethod code) {
     return code.instructionsBegin().addOffsetTo(getPCOffset());
   }
--- a/agent/src/share/classes/sun/jvm/hotspot/code/ScopeDesc.java	Wed Oct 28 10:37:17 2009 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/code/ScopeDesc.java	Thu Oct 29 08:49:31 2009 -0700
@@ -51,11 +51,10 @@
   /** Scalar replaced bjects pool */
   private List    objects; // ArrayList<ScopeValue>
 
-
-  public ScopeDesc(NMethod code, int decodeOffset, boolean reexecute) {
+  private ScopeDesc(NMethod code, int decodeOffset, List objects, boolean reexecute) {
     this.code = code;
     this.decodeOffset = decodeOffset;
-    this.objects      = decodeObjectValues(DebugInformationRecorder.SERIALIZED_NULL);
+    this.objects      = objects;
     this.reexecute    = reexecute;
 
     // Decode header
@@ -108,7 +107,7 @@
     return decodeMonitorValues(monitorsDecodeOffset);
   }
 
-  /** Returns a List&lt;MonitorValue&gt; */
+  /** Returns a List&lt;ObjectValue&gt; */
   public List getObjects() {
     return objects;
   }
@@ -119,7 +118,7 @@
       return null;
     }
 
-    return new ScopeDesc(code, senderDecodeOffset, false);
+    return new ScopeDesc(code, senderDecodeOffset, objects, false);
   }
 
   /** Returns where the scope was decoded */
--- a/agent/src/share/classes/sun/jvm/hotspot/ui/classbrowser/HTMLGenerator.java	Wed Oct 28 10:37:17 2009 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/ui/classbrowser/HTMLGenerator.java	Thu Oct 29 08:49:31 2009 -0700
@@ -807,6 +807,9 @@
             Interpreter interp = VM.getVM().getInterpreter();
             if (interp.contains(pc)) {
                InterpreterCodelet codelet = interp.getCodeletContaining(pc);
+               if (codelet == null) {
+                  return "Unknown location in the Interpreter: " + pc;
+               }
                return genHTML(codelet);
             }
             return genHTML(blob);
@@ -969,16 +972,24 @@
    }
 
    protected String genSafepointInfo(NMethod nm, PCDesc pcDesc) {
-      ScopeDesc sd = nm.getScopeDescAt(pcDesc.getRealPC(nm));
-      Formatter buf = new Formatter(genHTML);
-      Formatter tabs = new Formatter(genHTML);
+       ScopeDesc sd = nm.getScopeDescAt(pcDesc.getRealPC(nm));
+       Formatter buf = new Formatter(genHTML);
+       Formatter tabs = new Formatter(genHTML);
+       tabs.append(tab + tab + tab); // Initial indent for debug info
 
-      buf.beginTag("pre");
-      genScope(buf, tabs, sd);
-      buf.endTag("pre");
-      buf.append(genOopMapInfo(nm, pcDesc));
+       buf.beginTag("pre");
+       genScope(buf, tabs, sd);
 
-      return buf.toString();
+       // Reset indent for scalar replaced objects
+       tabs = new Formatter(genHTML);
+       tabs.append(tab + tab + tab); // Initial indent for debug info
+
+       genScObjInfo(buf, tabs, sd);
+       buf.endTag("pre");
+
+       buf.append(genOopMapInfo(nm, pcDesc));
+
+       return buf.toString();
    }
 
     protected void genScope(Formatter buf, Formatter tabs, ScopeDesc sd) {
@@ -1022,8 +1033,95 @@
             buf.append(genHTMLForMonitors(sd, monitors));
         }
 
+        buf.br();
         tabs.append(tab);
-        buf.br();
+    }
+
+    protected void genScObjInfo(Formatter buf, Formatter tabs, ScopeDesc sd) {
+        if (sd == null) {
+            return;
+        }
+
+        List objects = sd.getObjects();
+        if (objects == null) {
+            return;
+        }
+        int length = objects.size();
+        for (int i = 0; i < length; i++) {
+            buf.append(tabs);
+            ObjectValue ov = (ObjectValue)objects.get(i);
+            buf.append("ScObj" + i);
+            ScopeValue sv = ov.getKlass();
+            if (Assert.ASSERTS_ENABLED) {
+                Assert.that(sv.isConstantOop(), "scalar replaced object klass must be constant oop");
+            }
+            ConstantOopReadValue klv = (ConstantOopReadValue)sv;
+            OopHandle klHandle = klv.getValue();
+            if (Assert.ASSERTS_ENABLED) {
+                Assert.that(klHandle != null, "scalar replaced object klass must be not NULL");
+            }
+            Oop obj = VM.getVM().getObjectHeap().newOop(klHandle);
+            if (obj instanceof InstanceKlass) {
+                InstanceKlass kls = (InstanceKlass) obj;
+                buf.append(" " + kls.getName().asString() + "={");
+                int flen = ov.fieldsSize();
+
+                TypeArray klfields = kls.getFields();
+                int klen = (int) klfields.getLength();
+
+                ConstantPool cp = kls.getConstants();
+                int findex = 0;
+                for (int index = 0; index < klen; index += kls.NEXT_OFFSET) {
+                    int accsFlags = klfields.getShortAt(index + kls.ACCESS_FLAGS_OFFSET);
+                    int nameIndex = klfields.getShortAt(index + kls.NAME_INDEX_OFFSET);
+                    AccessFlags access = new AccessFlags(accsFlags);
+                    if (!access.isStatic()) {
+                        ScopeValue svf = ov.getFieldAt(findex++);
+                        String    fstr = scopeValueAsString(sd, svf);
+                        Symbol f_name  = cp.getSymbolAt(nameIndex);
+                        buf.append(" [" + f_name.asString() + " :"+ index + "]=(#" + fstr + ")");
+                    }
+                }
+                buf.append(" }");
+            } else {
+                buf.append(" ");
+                int flen = ov.fieldsSize();
+                if (obj instanceof TypeArrayKlass) {
+                    TypeArrayKlass kls = (TypeArrayKlass) obj;
+                    buf.append(kls.getElementTypeName() + "[" + flen + "]");
+                } else if (obj instanceof ObjArrayKlass) {
+                    ObjArrayKlass kls = (ObjArrayKlass) obj;
+                    Klass elobj = kls.getBottomKlass();
+                    if (elobj instanceof InstanceKlass) {
+                        buf.append(elobj.getName().asString());
+                    } else if (elobj instanceof TypeArrayKlass) {
+                        TypeArrayKlass elkls = (TypeArrayKlass) elobj;
+                        buf.append(elkls.getElementTypeName());
+                    } else {
+                        if (Assert.ASSERTS_ENABLED) {
+                            Assert.that(false, "unknown scalar replaced object klass!");
+                        }
+                    }
+                    buf.append("[" + flen + "]");
+                    int ndim = (int) kls.getDimension();
+                    while (--ndim > 0) {
+                        buf.append("[]");
+                    }
+                } else {
+                    if (Assert.ASSERTS_ENABLED) {
+                        Assert.that(false, "unknown scalar replaced object klass!");
+                    }
+                }
+                buf.append("={");
+                for (int findex = 0; findex < flen; findex++) {
+                    ScopeValue svf = ov.getFieldAt(findex);
+                    String fstr = scopeValueAsString(sd, svf);
+                    buf.append(" [" + findex + "]=(#" + fstr + ")");
+                }
+                buf.append(" }");
+            }
+            buf.br();
+        }
     }
 
    protected String genHTMLForOopMap(OopMap map) {
@@ -1037,8 +1135,6 @@
             tmpBuf.beginTag("tr");
             tmpBuf.beginTag("td");
             tmpBuf.append(type);
-            tmpBuf.endTag("td");
-            tmpBuf.endTag("tr");
             for (; ! oms.isDone(); oms.next()) {
                OopMapValue omv = oms.getCurrent();
                if (omv == null) {
@@ -1048,7 +1144,7 @@
                VMReg vmReg = omv.getReg();
                int reg = vmReg.getValue();
                if (reg < stack0) {
-                  tmpBuf.append(VMRegImpl.getRegisterName(vmReg.getValue()));
+                  tmpBuf.append(VMRegImpl.getRegisterName(reg));
                } else {
                   tmpBuf.append('[');
                   tmpBuf.append(Integer.toString((reg - stack0) * 4));
@@ -1058,7 +1154,13 @@
                   tmpBuf.append(" = ");
                   VMReg vmContentReg = omv.getContentReg();
                   int contentReg = vmContentReg.getValue();
-                  tmpBuf.append(VMRegImpl.getRegisterName(vmContentReg.getValue()));
+                  if (contentReg < stack0) {
+                     tmpBuf.append(VMRegImpl.getRegisterName(contentReg));
+                  } else {
+                     tmpBuf.append('[');
+                     tmpBuf.append(Integer.toString((contentReg - stack0) * 4));
+                     tmpBuf.append(']');
+                  }
                }
                tmpBuf.append(spaces);
             }
@@ -1072,19 +1174,19 @@
 
       OopMapValueIterator omvIterator = new OopMapValueIterator();
       OopMapStream oms = new OopMapStream(map, OopMapValue.OopTypes.OOP_VALUE);
-      buf.append(omvIterator.iterate(oms, "Oop:", false));
+      buf.append(omvIterator.iterate(oms, "Oops:", false));
+
+      oms = new OopMapStream(map, OopMapValue.OopTypes.NARROWOOP_VALUE);
+      buf.append(omvIterator.iterate(oms, "narrowOops:", false));
 
       oms = new OopMapStream(map, OopMapValue.OopTypes.VALUE_VALUE);
-      buf.append(omvIterator.iterate(oms, "Value:", false));
-
-      oms = new OopMapStream(map, OopMapValue.OopTypes.NARROWOOP_VALUE);
-      buf.append(omvIterator.iterate(oms, "Oop:", false));
+      buf.append(omvIterator.iterate(oms, "Values:", false));
 
       oms = new OopMapStream(map, OopMapValue.OopTypes.CALLEE_SAVED_VALUE);
       buf.append(omvIterator.iterate(oms, "Callee saved:",  true));
 
       oms = new OopMapStream(map, OopMapValue.OopTypes.DERIVED_OOP_VALUE);
-      buf.append(omvIterator.iterate(oms, "Derived oop:", true));
+      buf.append(omvIterator.iterate(oms, "Derived oops:", true));
 
       buf.endTag("table");
       return buf.toString();
@@ -1093,6 +1195,8 @@
 
    protected String genOopMapInfo(NMethod nmethod, PCDesc pcDesc) {
       OopMapSet mapSet = nmethod.getOopMaps();
+      if (mapSet == null || (mapSet.getSize() <= 0))
+        return "";
       int pcOffset = pcDesc.getPCOffset();
       OopMap map = mapSet.findMapAtOffset(pcOffset, VM.getVM().isDebugging());
       if (map == null) {
@@ -1106,6 +1210,7 @@
      Formatter buf = new Formatter(genHTML);
      buf.beginTag("pre");
      buf.append("OopMap: ");
+     buf.br();
      buf.append(genHTMLForOopMap(map));
      buf.endTag("pre");
 
@@ -1154,7 +1259,7 @@
       return buf.toString();
    }
 
-   private String scopeValueAsString(ScopeValue sv) {
+   private String scopeValueAsString(ScopeDesc sd, ScopeValue sv) {
       Formatter buf = new Formatter(genHTML);
       if (sv.isConstantInt()) {
          buf.append("int ");
@@ -1187,6 +1292,11 @@
          } else {
             buf.append("null");
          }
+      } else if (sv.isObject()) {
+         ObjectValue ov = (ObjectValue)sv;
+         buf.append("#ScObj" + sd.getObjects().indexOf(ov));
+      } else {
+         buf.append("unknown scope value " + sv);
       }
       return buf.toString();
    }
@@ -1219,7 +1329,7 @@
          }
 
          buf.append(", ");
-         buf.append(scopeValueAsString(sv));
+         buf.append(scopeValueAsString(sd, sv));
          buf.append(") ");
       }
 
@@ -1246,7 +1356,7 @@
          buf.append("(owner = ");
          ScopeValue owner = mv.owner();
          if (owner != null) {
-            buf.append(scopeValueAsString(owner));
+            buf.append(scopeValueAsString(sd, owner));
          } else {
             buf.append("null");
          }
@@ -1324,11 +1434,11 @@
                   buf.append(instr.asString(currentPc, symFinder));
                }
 
+               buf.br();
                if (isSafepoint && !prevWasCall) {
-                  buf.append(genSafepointInfo(nmethod, pcDesc));
+                 buf.append(genSafepointInfo(nmethod, pcDesc));
                }
 
-               buf.br();
                prevWasCall = instr.isCall();
             }
 
--- a/agent/src/share/classes/sun/jvm/hotspot/utilities/soql/sa.js	Wed Oct 28 10:37:17 2009 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/utilities/soql/sa.js	Thu Oct 29 08:49:31 2009 -0700
@@ -1047,7 +1047,7 @@
    } else {
       // some type names have ':'. replace to make it as a 
       // JavaScript identifier
-      tmp.name = tmp.name.replace(':', '_');
+      tmp.name = tmp.name.replace(':', '_').replace('<', '_').replace('>', '_').replace('*', '_').replace(' ', '_');
       eval("function read" + tmp.name + "(addr) {" +
            "   return readVMType('" + tmp.name + "', addr);}"); 
       eval("function print" + tmp.name + "(addr) {" + 
--- a/src/cpu/sparc/vm/sharedRuntime_sparc.cpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/cpu/sparc/vm/sharedRuntime_sparc.cpp	Thu Oct 29 08:49:31 2009 -0700
@@ -3213,9 +3213,8 @@
   Register        Oreturn0           = O0;
   Register        Oreturn1           = O1;
   Register        O2UnrollBlock      = O2;
-  Register        O3tmp              = O3;
-  Register        I5exception_tmp    = I5;
-  Register        G4exception_tmp    = G4_scratch;
+  Register        L0deopt_mode       = L0;
+  Register        G4deopt_mode       = G4_scratch;
   int             frame_size_words;
   Address         saved_Freturn0_addr(FP, -sizeof(double) + STACK_BIAS);
 #if !defined(_LP64) && defined(COMPILER2)
@@ -3265,7 +3264,7 @@
 
   map = RegisterSaver::save_live_registers(masm, 0, &frame_size_words);
   __ ba(false, cont);
-  __ delayed()->mov(Deoptimization::Unpack_deopt, I5exception_tmp);
+  __ delayed()->mov(Deoptimization::Unpack_deopt, L0deopt_mode);
 
   int exception_offset = __ offset() - start;
 
@@ -3316,7 +3315,7 @@
 #endif
 
   __ ba(false, cont);
-  __ delayed()->mov(Deoptimization::Unpack_exception, I5exception_tmp);;
+  __ delayed()->mov(Deoptimization::Unpack_exception, L0deopt_mode);;
 
   //
   // Reexecute entry, similar to c2 uncommon trap
@@ -3326,7 +3325,7 @@
   // No need to update oop_map  as each call to save_live_registers will produce identical oopmap
   (void) RegisterSaver::save_live_registers(masm, 0, &frame_size_words);
 
-  __ mov(Deoptimization::Unpack_reexecute, I5exception_tmp);
+  __ mov(Deoptimization::Unpack_reexecute, L0deopt_mode);
 
   __ bind(cont);
 
@@ -3349,14 +3348,14 @@
   // NOTE: we know that only O0/O1 will be reloaded by restore_result_registers
   // so this move will survive
 
-  __ mov(I5exception_tmp, G4exception_tmp);
+  __ mov(L0deopt_mode, G4deopt_mode);
 
   __ mov(O0, O2UnrollBlock->after_save());
 
   RegisterSaver::restore_result_registers(masm);
 
   Label noException;
-  __ cmp(G4exception_tmp, Deoptimization::Unpack_exception);   // Was exception pending?
+  __ cmp(G4deopt_mode, Deoptimization::Unpack_exception);   // Was exception pending?
   __ br(Assembler::notEqual, false, Assembler::pt, noException);
   __ delayed()->nop();
 
@@ -3390,10 +3389,10 @@
   }
 #endif
   __ set_last_Java_frame(SP, noreg);
-  __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, Deoptimization::unpack_frames), G2_thread, G4exception_tmp);
+  __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, Deoptimization::unpack_frames), G2_thread, G4deopt_mode);
 #else
   // LP64 uses g4 in set_last_Java_frame
-  __ mov(G4exception_tmp, O1);
+  __ mov(G4deopt_mode, O1);
   __ set_last_Java_frame(SP, G0);
   __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, Deoptimization::unpack_frames), G2_thread, O1);
 #endif
@@ -3446,7 +3445,6 @@
 #endif
   MacroAssembler* masm               = new MacroAssembler(&buffer);
   Register        O2UnrollBlock      = O2;
-  Register        O3tmp              = O3;
   Register        O2klass_index      = O2;
 
   //
--- a/src/cpu/sparc/vm/sparc.ad	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/cpu/sparc/vm/sparc.ad	Thu Oct 29 08:49:31 2009 -0700
@@ -9419,8 +9419,9 @@
   // x |= (x >> 8);
   // x |= (x >> 16);
   // return (WORDBITS - popc(x));
-  format %{ "SRL     $src,1,$dst\t! count leading zeros (int)\n\t"
-            "OR      $src,$tmp,$dst\n\t"
+  format %{ "SRL     $src,1,$tmp\t! count leading zeros (int)\n\t"
+            "SRL     $src,0,$dst\t! 32-bit zero extend\n\t"
+            "OR      $dst,$tmp,$dst\n\t"
             "SRL     $dst,2,$tmp\n\t"
             "OR      $dst,$tmp,$dst\n\t"
             "SRL     $dst,4,$tmp\n\t"
@@ -9437,7 +9438,8 @@
     Register Rsrc = $src$$Register;
     Register Rtmp = $tmp$$Register;
     __ srl(Rsrc, 1, Rtmp);
-    __ or3(Rsrc, Rtmp, Rdst);
+    __ srl(Rsrc, 0, Rdst);
+    __ or3(Rdst, Rtmp, Rdst);
     __ srl(Rdst, 2, Rtmp);
     __ or3(Rdst, Rtmp, Rdst);
     __ srl(Rdst, 4, Rtmp);
@@ -9465,7 +9467,7 @@
   // x |= (x >> 16);
   // x |= (x >> 32);
   // return (WORDBITS - popc(x));
-  format %{ "SRLX    $src,1,$dst\t! count leading zeros (long)\n\t"
+  format %{ "SRLX    $src,1,$tmp\t! count leading zeros (long)\n\t"
             "OR      $src,$tmp,$dst\n\t"
             "SRLX    $dst,2,$tmp\n\t"
             "OR      $dst,$tmp,$dst\n\t"
--- a/src/cpu/x86/vm/methodHandles_x86.cpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/cpu/x86/vm/methodHandles_x86.cpp	Thu Oct 29 08:49:31 2009 -0700
@@ -271,9 +271,15 @@
 void trace_method_handle_stub(const char* adaptername,
                               oopDesc* mh,
                               intptr_t* entry_sp,
-                              intptr_t* saved_sp) {
+                              intptr_t* saved_sp,
+                              intptr_t* saved_bp) {
   // called as a leaf from native code: do not block the JVM!
-  printf("MH %s "PTR_FORMAT" "PTR_FORMAT" "INTX_FORMAT"\n", adaptername, (void*)mh, entry_sp, entry_sp - saved_sp);
+  intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset];
+  intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset];
+  printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n",
+         adaptername, (intptr_t)mh, (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp);
+  if (last_sp != saved_sp)
+    printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp);
 }
 #endif //PRODUCT
 
@@ -293,6 +299,10 @@
   Register rbx_temp    = rbx;
   Register rdx_temp    = rdx;
 
+  // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls)
+  // and gen_c2i_adapter (from compiled calls):
+  Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi);
+
   guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
 
   // some handy addresses
@@ -315,6 +325,8 @@
     assert(tag_offset = wordSize, "stack grows as expected");
   }
 
+  const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
+
   if (have_entry(ek)) {
     __ nop();                   // empty stubs make SG sick
     return;
@@ -328,45 +340,65 @@
     __ push(rax); __ push(rbx); __ push(rcx); __ push(rdx); __ push(rsi); __ push(rdi);
     __ lea(rax, Address(rsp, wordSize*6)); // entry_sp
     // arguments:
+    __ push(rbp);               // interpreter frame pointer
     __ push(rsi);               // saved_sp
     __ push(rax);               // entry_sp
     __ push(rcx);               // mh
     __ push(rcx);
     __ movptr(Address(rsp, 0), (intptr_t)entry_name(ek));
-    __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 4);
+    __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5);
     __ pop(rdi); __ pop(rsi); __ pop(rdx); __ pop(rcx); __ pop(rbx); __ pop(rax);
   }
 #endif //PRODUCT
 
   switch ((int) ek) {
-  case _check_mtype:
+  case _raise_exception:
     {
-      // this stub is special, because it requires a live mtype argument
-      Register rax_mtype = rax;
+      // Not a real MH entry, but rather shared code for raising an exception.
+      // Extra local arguments are pushed on stack, as required type at TOS+8,
+      // failing object (or NULL) at TOS+4, failing bytecode type at TOS.
+      // Beyond those local arguments are the PC, of course.
+      Register rdx_code = rdx_temp;
+      Register rcx_fail = rcx_recv;
+      Register rax_want = rax_argslot;
+      Register rdi_pc   = rdi;
+      __ pop(rdx_code);  // TOS+0
+      __ pop(rcx_fail);  // TOS+4
+      __ pop(rax_want);  // TOS+8
+      __ pop(rdi_pc);    // caller PC
 
-      // emit WrongMethodType path first, to enable jccb back-branch
-      Label wrong_method_type;
-      __ bind(wrong_method_type);
-      __ movptr(rdx_temp, ExternalAddress((address) &_entries[_wrong_method_type]));
-      __ jmp(Address(rdx_temp, MethodHandleEntry::from_interpreted_entry_offset_in_bytes()));
-      __ hlt();
+      __ mov(rsp, rsi);   // cut the stack back to where the caller started
 
-      interp_entry = __ pc();
-      __ check_method_handle_type(rax_mtype, rcx_recv, rdx_temp, wrong_method_type);
-      // now rax_mtype is dead; subsequent stubs will use it as a temp
+      // Repush the arguments as if coming from the interpreter.
+      if (TaggedStackInterpreter)  __ push(frame::tag_for_basic_type(T_INT));
+      __ push(rdx_code);
+      if (TaggedStackInterpreter)  __ push(frame::tag_for_basic_type(T_OBJECT));
+      __ push(rcx_fail);
+      if (TaggedStackInterpreter)  __ push(frame::tag_for_basic_type(T_OBJECT));
+      __ push(rax_want);
 
-      __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
-    }
-    break;
+      Register rbx_method = rbx_temp;
+      Label no_method;
+      // FIXME: fill in _raise_exception_method with a suitable sun.dyn method
+      __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method));
+      __ testptr(rbx_method, rbx_method);
+      __ jcc(Assembler::zero, no_method);
+      int jobject_oop_offset = 0;
+      __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset));  // dereference the jobject
+      __ testptr(rbx_method, rbx_method);
+      __ jcc(Assembler::zero, no_method);
+      __ verify_oop(rbx_method);
+      __ push(rdi_pc);          // and restore caller PC
+      __ jmp(rbx_method_fie);
 
-  case _wrong_method_type:
-    {
-      // this stub is special, because it requires a live mtype argument
-      Register rax_mtype = rax;
-
-      interp_entry = __ pc();
-      __ push(rax_mtype);       // required mtype
-      __ push(rcx_recv);        // random mh (1st stacked argument)
+      // If we get here, the Java runtime did not do its job of creating the exception.
+      // Do something that is at least causes a valid throw from the interpreter.
+      __ bind(no_method);
+      __ pop(rax_want);
+      if (TaggedStackInterpreter)  __ pop(rcx_fail);
+      __ pop(rcx_fail);
+      __ push(rax_want);
+      __ push(rcx_fail);
       __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry()));
     }
     break;
@@ -442,7 +474,7 @@
       __ load_klass(rax_klass, rcx_recv);
       __ verify_oop(rax_klass);
 
-      Register rcx_temp   = rcx_recv;
+      Register rdi_temp   = rdi;
       Register rbx_method = rbx_index;
 
       // get interface klass
@@ -451,7 +483,7 @@
       __ lookup_interface_method(rax_klass, rdx_intf,
                                  // note: next two args must be the same:
                                  rbx_index, rbx_method,
-                                 rcx_temp,
+                                 rdi_temp,
                                  no_such_interface);
 
       __ verify_oop(rbx_method);
@@ -461,7 +493,10 @@
       __ bind(no_such_interface);
       // Throw an exception.
       // For historical reasons, it will be IncompatibleClassChangeError.
-      __ should_not_reach_here(); // %%% FIXME NYI
+      __ pushptr(Address(rdx_intf, java_mirror_offset));  // required interface
+      __ push(rcx_recv);        // bad receiver
+      __ push((int)Bytecodes::_invokeinterface);  // who is complaining?
+      __ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
     }
     break;
 
@@ -524,6 +559,7 @@
     break;
 
   case _adapter_retype_only:
+  case _adapter_retype_raw:
     // immediately jump to the next MH layer:
     __ movptr(rcx_recv, rcx_mh_vmtarget);
     __ verify_oop(rcx_recv);
@@ -545,10 +581,6 @@
       __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object!
       __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes()));
 
-      // get the new MH:
-      __ movptr(rcx_recv, rcx_mh_vmtarget);
-      // (now we are done with the old MH)
-
       Label done;
       __ movptr(rdx_temp, vmarg);
       __ testl(rdx_temp, rdx_temp);
@@ -558,17 +590,23 @@
       // live at this point:
       // - rbx_klass:  klass required by the target method
       // - rdx_temp:   argument klass to test
-      // - rcx_recv:   method handle to invoke (after cast succeeds)
+      // - rcx_recv:   adapter method handle
       __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done);
 
       // If we get here, the type check failed!
       // Call the wrong_method_type stub, passing the failing argument type in rax.
       Register rax_mtype = rax_argslot;
-      __ push(rbx_klass);       // missed klass (required type)
-      __ push(rdx_temp);        // bad actual type (1st stacked argument)
-      __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry()));
+      __ movl(rax_argslot, rcx_amh_vmargslot);  // reload argslot field
+      __ movptr(rdx_temp, vmarg);
+
+      __ pushptr(rcx_amh_argument); // required class
+      __ push(rdx_temp);            // bad object
+      __ push((int)Bytecodes::_checkcast);  // who is complaining?
+      __ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
 
       __ bind(done);
+      // get the new MH:
+      __ movptr(rcx_recv, rcx_mh_vmtarget);
       __ jump_to_method_handle_entry(rcx_recv, rdx_temp);
     }
     break;
@@ -1107,11 +1145,17 @@
 
       __ bind(bad_array_klass);
       UNPUSH_RSI_RDI;
-      __ stop("bad array klass NYI");
+      __ pushptr(Address(rdx_array_klass, java_mirror_offset)); // required type
+      __ pushptr(vmarg);                // bad array
+      __ push((int)Bytecodes::_aaload); // who is complaining?
+      __ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
 
       __ bind(bad_array_length);
       UNPUSH_RSI_RDI;
-      __ stop("bad array length NYI");
+      __ push(rcx_recv);        // AMH requiring a certain length
+      __ pushptr(vmarg);        // bad array
+      __ push((int)Bytecodes::_arraylength); // who is complaining?
+      __ jump(ExternalAddress(from_interpreted_entry(_raise_exception)));
 
 #undef UNPUSH_RSI_RDI
     }
--- a/src/cpu/x86/vm/templateInterpreter_x86_32.cpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/cpu/x86/vm/templateInterpreter_x86_32.cpp	Thu Oct 29 08:49:31 2009 -0700
@@ -92,8 +92,7 @@
   return entry;
 }
 
-// Arguments are: required type at TOS+8, failing object (or NULL) at TOS+4.
-// pc at TOS (just for debugging)
+// Arguments are: required type at TOS+4, failing object (or NULL) at TOS.
 address TemplateInterpreterGenerator::generate_WrongMethodType_handler() {
   address entry = __ pc();
 
--- a/src/share/vm/classfile/javaClasses.hpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/classfile/javaClasses.hpp	Thu Oct 29 08:49:31 2009 -0700
@@ -903,19 +903,20 @@
   // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
   enum {
     OP_RETYPE_ONLY   = 0x0, // no argument changes; straight retype
-    OP_CHECK_CAST    = 0x1, // ref-to-ref conversion; requires a Class argument
-    OP_PRIM_TO_PRIM  = 0x2, // converts from one primitive to another
-    OP_REF_TO_PRIM   = 0x3, // unboxes a wrapper to produce a primitive
-    OP_PRIM_TO_REF   = 0x4, // boxes a primitive into a wrapper (NYI)
-    OP_SWAP_ARGS     = 0x5, // swap arguments (vminfo is 2nd arg)
-    OP_ROT_ARGS      = 0x6, // rotate arguments (vminfo is displaced arg)
-    OP_DUP_ARGS      = 0x7, // duplicates one or more arguments (at TOS)
-    OP_DROP_ARGS     = 0x8, // remove one or more argument slots
-    OP_COLLECT_ARGS  = 0x9, // combine one or more arguments into a varargs (NYI)
-    OP_SPREAD_ARGS   = 0xA, // expand in place a varargs array (of known size)
-    OP_FLYBY         = 0xB, // operate first on reified argument list (NYI)
-    OP_RICOCHET      = 0xC, // run an adapter chain on the return value (NYI)
-    CONV_OP_LIMIT    = 0xD, // limit of CONV_OP enumeration
+    OP_RETYPE_RAW    = 0x1, // straight retype, trusted (void->int, Object->T)
+    OP_CHECK_CAST    = 0x2, // ref-to-ref conversion; requires a Class argument
+    OP_PRIM_TO_PRIM  = 0x3, // converts from one primitive to another
+    OP_REF_TO_PRIM   = 0x4, // unboxes a wrapper to produce a primitive
+    OP_PRIM_TO_REF   = 0x5, // boxes a primitive into a wrapper (NYI)
+    OP_SWAP_ARGS     = 0x6, // swap arguments (vminfo is 2nd arg)
+    OP_ROT_ARGS      = 0x7, // rotate arguments (vminfo is displaced arg)
+    OP_DUP_ARGS      = 0x8, // duplicates one or more arguments (at TOS)
+    OP_DROP_ARGS     = 0x9, // remove one or more argument slots
+    OP_COLLECT_ARGS  = 0xA, // combine one or more arguments into a varargs (NYI)
+    OP_SPREAD_ARGS   = 0xB, // expand in place a varargs array (of known size)
+    OP_FLYBY         = 0xC, // operate first on reified argument list (NYI)
+    OP_RICOCHET      = 0xD, // run an adapter chain on the return value (NYI)
+    CONV_OP_LIMIT    = 0xE, // limit of CONV_OP enumeration
 
     CONV_OP_MASK     = 0xF00, // this nybble contains the conversion op field
     CONV_VMINFO_MASK = 0x0FF, // LSB is reserved for JVM use
--- a/src/share/vm/classfile/systemDictionary.cpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/classfile/systemDictionary.cpp	Thu Oct 29 08:49:31 2009 -0700
@@ -1963,7 +1963,7 @@
   WKID meth_group_end   = WK_KLASS_ENUM_NAME(WrongMethodTypeException_klass);
   initialize_wk_klasses_until(meth_group_start, scan, CHECK);
   if (EnableMethodHandles) {
-    initialize_wk_klasses_through(meth_group_start, scan, CHECK);
+    initialize_wk_klasses_through(meth_group_end, scan, CHECK);
   }
   if (_well_known_klasses[meth_group_start] == NULL) {
     // Skip the rest of the method handle classes, if MethodHandle is not loaded.
--- a/src/share/vm/oops/instanceKlass.cpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/oops/instanceKlass.cpp	Thu Oct 29 08:49:31 2009 -0700
@@ -1900,7 +1900,7 @@
   }
 }
 
-char* instanceKlass::signature_name() const {
+const char* instanceKlass::signature_name() const {
   const char* src = (const char*) (name()->as_C_string());
   const int src_length = (int)strlen(src);
   char* dest = NEW_RESOURCE_ARRAY(char, src_length + 3);
@@ -2259,6 +2259,10 @@
     st->print(BULLET"fake entry for array: ");
     array_klass->print_value_on(st);
     st->cr();
+  } else if (as_klassOop() == SystemDictionary::MethodType_klass()) {
+    st->print(BULLET"signature: ");
+    java_dyn_MethodType::print_signature(obj, st);
+    st->cr();
   }
 }
 
@@ -2284,6 +2288,9 @@
       const char* tname = type2name(java_lang_Class::primitive_type(obj));
       st->print("%s", tname ? tname : "type?");
     }
+  } else if (as_klassOop() == SystemDictionary::MethodType_klass()) {
+    st->print(" = ");
+    java_dyn_MethodType::print_signature(obj, st);
   } else if (java_lang_boxing_object::is_instance(obj)) {
     st->print(" = ");
     java_lang_boxing_object::print(obj, st);
--- a/src/share/vm/oops/instanceKlass.hpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/oops/instanceKlass.hpp	Thu Oct 29 08:49:31 2009 -0700
@@ -722,7 +722,7 @@
 #endif // SERIALGC
 
   // Naming
-  char* signature_name() const;
+  const char* signature_name() const;
 
   // Iterators
   int oop_oop_iterate(oop obj, OopClosure* blk) {
--- a/src/share/vm/oops/klass.cpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/oops/klass.cpp	Thu Oct 29 08:49:31 2009 -0700
@@ -496,11 +496,13 @@
       return result;
     }
   }
+  if (name() == NULL)  return "<unknown>";
   return name()->as_klass_external_name();
 }
 
 
-char* Klass::signature_name() const {
+const char* Klass::signature_name() const {
+  if (name() == NULL)  return "<unknown>";
   return name()->as_C_string();
 }
 
--- a/src/share/vm/oops/klass.hpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/oops/klass.hpp	Thu Oct 29 08:49:31 2009 -0700
@@ -546,7 +546,7 @@
   // For arrays, this returns the name of the element with a leading '['.
   // For classes, this returns the name with a leading 'L' and a trailing ';'
   //     and the package separators as '/'.
-  virtual char* signature_name() const;
+  virtual const char* signature_name() const;
 
   // garbage collection support
   virtual void oop_follow_contents(oop obj) = 0;
--- a/src/share/vm/oops/markOop.cpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/oops/markOop.cpp	Thu Oct 29 08:49:31 2009 -0700
@@ -31,8 +31,9 @@
     st->print("locked(0x%lx)->", value());
     markOop(*(markOop*)value())->print_on(st);
   } else {
-    assert(is_unlocked(), "just checking");
+    assert(is_unlocked() || has_bias_pattern(), "just checking");
     st->print("mark(");
+    if (has_bias_pattern())  st->print("biased,");
     st->print("hash %#lx,", hash());
     st->print("age %d)", age());
   }
--- a/src/share/vm/oops/methodOop.cpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/oops/methodOop.cpp	Thu Oct 29 08:49:31 2009 -0700
@@ -881,7 +881,7 @@
   assert((oop)p == method_type(), "pointer chase is correct");
 #endif
 
-  if (TraceMethodHandles)
+  if (TraceMethodHandles && (Verbose || WizardMode))
     m->print_on(tty);
 
   return m;
--- a/src/share/vm/opto/callnode.cpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/opto/callnode.cpp	Thu Oct 29 08:49:31 2009 -0700
@@ -421,21 +421,23 @@
         iklass = cik->as_instance_klass();
       } else if (cik->is_type_array_klass()) {
         cik->as_array_klass()->base_element_type()->print_name_on(st);
-        st->print("[%d]=", spobj->n_fields());
+        st->print("[%d]", spobj->n_fields());
       } else if (cik->is_obj_array_klass()) {
-        ciType* cie = cik->as_array_klass()->base_element_type();
-        int ndim = 1;
-        while (cie->is_obj_array_klass()) {
-          ndim += 1;
-          cie = cie->as_array_klass()->base_element_type();
+        ciKlass* cie = cik->as_obj_array_klass()->base_element_klass();
+        if (cie->is_instance_klass()) {
+          cie->print_name_on(st);
+        } else if (cie->is_type_array_klass()) {
+          cie->as_array_klass()->base_element_type()->print_name_on(st);
+        } else {
+          ShouldNotReachHere();
         }
-        cie->print_name_on(st);
+        st->print("[%d]", spobj->n_fields());
+        int ndim = cik->as_array_klass()->dimension() - 1;
         while (ndim-- > 0) {
           st->print("[]");
         }
-        st->print("[%d]=", spobj->n_fields());
       }
-      st->print("{");
+      st->print("={");
       uint nf = spobj->n_fields();
       if (nf > 0) {
         uint first_ind = spobj->first_index();
--- a/src/share/vm/prims/methodHandles.cpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/prims/methodHandles.cpp	Thu Oct 29 08:49:31 2009 -0700
@@ -33,8 +33,7 @@
 
 MethodHandleEntry* MethodHandles::_entries[MethodHandles::_EK_LIMIT] = {NULL};
 const char*        MethodHandles::_entry_names[_EK_LIMIT+1] = {
-  "check_mtype",
-  "wrong_method_type",          // what happens when there is a type mismatch
+  "raise_exception",
   "invokestatic",               // how a MH emulates invokestatic
   "invokespecial",              // ditto for the other invokes...
   "invokevirtual",
@@ -48,6 +47,7 @@
 
   // starting at _adapter_mh_first:
   "adapter_retype_only",       // these are for AMH...
+  "adapter_retype_raw",
   "adapter_check_cast",
   "adapter_prim_to_prim",
   "adapter_ref_to_prim",
@@ -82,6 +82,8 @@
   NULL
 };
 
+jobject MethodHandles::_raise_exception_method;
+
 #ifdef ASSERT
 bool MethodHandles::spot_check_entry_names() {
   assert(!strcmp(entry_name(_invokestatic_mh), "invokestatic"), "");
@@ -157,7 +159,8 @@
 }
 
 methodOop MethodHandles::decode_BoundMethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result) {
-  assert(mh->klass() == SystemDictionary::BoundMethodHandle_klass(), "");
+  assert(sun_dyn_BoundMethodHandle::is_instance(mh), "");
+  assert(mh->klass() != SystemDictionary::AdapterMethodHandle_klass(), "");
   for (oop bmh = mh;;) {
     // Bound MHs can be stacked to bind several arguments.
     oop target = java_dyn_MethodHandle::vmtarget(bmh);
@@ -174,10 +177,9 @@
       } else {
         // Optimized case:  binding a receiver to a non-dispatched DMH
         // short-circuits directly to the methodOop.
+        // (It might be another argument besides a receiver also.)
         assert(target->is_method(), "must be a simple method");
         methodOop m = (methodOop) target;
-        DEBUG_ONLY(int argslot = sun_dyn_BoundMethodHandle::vmargslot(bmh));
-        assert(argslot == m->size_of_parameters() - 1, "must be initial argument (receiver)");
         decode_flags_result |= MethodHandles::_dmf_binds_method;
         return m;
       }
@@ -214,6 +216,9 @@
     return decode_BoundMethodHandle(mh, receiver_limit_result, decode_flags_result);
   } else if (mhk == SystemDictionary::AdapterMethodHandle_klass()) {
     return decode_AdapterMethodHandle(mh, receiver_limit_result, decode_flags_result);
+  } else if (sun_dyn_BoundMethodHandle::is_subclass(mhk)) {
+    // could be a JavaMethodHandle (but not an adapter MH)
+    return decode_BoundMethodHandle(mh, receiver_limit_result, decode_flags_result);
   } else {
     assert(false, "cannot parse this MH");
     return NULL;              // random MH?
@@ -366,7 +371,13 @@
   oop vmtarget = sun_dyn_MemberName::vmtarget(mname);
   int vmindex  = sun_dyn_MemberName::vmindex(mname);
   if (vmindex == VM_INDEX_UNINITIALIZED)  return NULL; // not resolved
-  return decode_vmtarget(vmtarget, vmindex, NULL, receiver_limit_result, decode_flags_result);
+  methodOop m = decode_vmtarget(vmtarget, vmindex, NULL, receiver_limit_result, decode_flags_result);
+  oop clazz = sun_dyn_MemberName::clazz(mname);
+  if (clazz != NULL && java_lang_Class::is_instance(clazz)) {
+    klassOop klass = java_lang_Class::as_klassOop(clazz);
+    if (klass != NULL)  receiver_limit_result = klass;
+  }
+  return m;
 }
 
 // An unresolved member name is a mere symbolic reference.
@@ -789,6 +800,30 @@
   THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), msg);
 }
 
+static const char* always_null_names[] = {
+  "java/lang/Void",
+  "java/lang/Null",
+  //"java/lang/Nothing",
+  "sun/dyn/empty/Empty",
+  NULL
+};
+
+static bool is_always_null_type(klassOop klass) {
+  if (!Klass::cast(klass)->oop_is_instance())  return false;
+  instanceKlass* ik = instanceKlass::cast(klass);
+  // Must be on the boot class path:
+  if (ik->class_loader() != NULL)  return false;
+  // Check the name.
+  symbolOop name = ik->name();
+  for (int i = 0; ; i++) {
+    const char* test_name = always_null_names[i];
+    if (test_name == NULL)  break;
+    if (name->equals(test_name, (int) strlen(test_name)))
+      return true;
+  }
+  return false;
+}
+
 bool MethodHandles::class_cast_needed(klassOop src, klassOop dst) {
   if (src == dst || dst == SystemDictionary::object_klass())
     return false;                               // quickest checks
@@ -805,6 +840,12 @@
     //srck = Klass::cast(SystemDictionary::object_klass());
     return true;
   }
+  if (is_always_null_type(src)) {
+    // some source types are known to be never instantiated;
+    // they represent references which are always null
+    // such null references never fail to convert safely
+    return false;
+  }
   return !srck->is_subclass_of(dstk->as_klassOop());
 }
 
@@ -814,9 +855,15 @@
 
 bool MethodHandles::same_basic_type_for_arguments(BasicType src,
                                                   BasicType dst,
+                                                  bool raw,
                                                   bool for_return) {
-  // return values can always be forgotten:
-  if (for_return && dst == T_VOID)  return true;
+  if (for_return) {
+    // return values can always be forgotten:
+    if (dst == T_VOID)  return true;
+    if (src == T_VOID)  return raw && (dst == T_INT);
+    // We allow caller to receive a garbage int, which is harmless.
+    // This trick is pulled by trusted code (see VerifyType.canPassRaw).
+  }
   assert(src != T_VOID && dst != T_VOID, "should not be here");
   if (src == dst)  return true;
   if (type2size[src] != type2size[dst])  return false;
@@ -929,8 +976,8 @@
   const char* err = NULL;
 
   int first_ptype_pos = m_needs_receiver ? 1 : 0;
-  if (has_bound_recv && err == NULL) {
-    first_ptype_pos -= 1;
+  if (has_bound_recv) {
+    first_ptype_pos -= 1;  // ptypes do not include the bound argument; start earlier in them
     if (m_needs_receiver && bound_recv_type.is_null())
       { err = "bound receiver is not an object"; goto die; }
   }
@@ -939,10 +986,10 @@
     objArrayOop ptypes = java_dyn_MethodType::ptypes(mtype());
     if (ptypes->length() < first_ptype_pos)
       { err = "receiver argument is missing"; goto die; }
-    if (first_ptype_pos == -1)
+    if (has_bound_recv)
       err = check_method_receiver(m(), bound_recv_type->as_klassOop());
     else
-      err = check_method_receiver(m(), java_lang_Class::as_klassOop(ptypes->obj_at(0)));
+      err = check_method_receiver(m(), java_lang_Class::as_klassOop(ptypes->obj_at(first_ptype_pos-1)));
     if (err != NULL)  goto die;
   }
 
@@ -983,7 +1030,8 @@
                                                     int insert_argnum, oop insert_type,
                                                     int change_argnum, oop change_type,
                                                     int delete_argnum,
-                                                    oop dst_mtype, int dst_beg, int dst_end) {
+                                                    oop dst_mtype, int dst_beg, int dst_end,
+                                                    bool raw) {
   objArrayOop src_ptypes = java_dyn_MethodType::ptypes(src_mtype);
   objArrayOop dst_ptypes = java_dyn_MethodType::ptypes(dst_mtype);
 
@@ -1042,7 +1090,7 @@
     if (src_type != dst_type) {
       if (src_type == NULL)  return "not enough arguments";
       if (dst_type == NULL)  return "too many arguments";
-      err = check_argument_type_change(src_type, dst_type, dst_idx);
+      err = check_argument_type_change(src_type, dst_type, dst_idx, raw);
       if (err != NULL)  return err;
     }
   }
@@ -1051,7 +1099,7 @@
   oop src_rtype = java_dyn_MethodType::rtype(src_mtype);
   oop dst_rtype = java_dyn_MethodType::rtype(dst_mtype);
   if (src_rtype != dst_rtype) {
-    err = check_return_type_change(dst_rtype, src_rtype); // note reversal!
+    err = check_return_type_change(dst_rtype, src_rtype, raw); // note reversal!
     if (err != NULL)  return err;
   }
 
@@ -1061,38 +1109,45 @@
 
 
 const char* MethodHandles::check_argument_type_change(BasicType src_type,
-                                                     klassOop src_klass,
-                                                     BasicType dst_type,
-                                                     klassOop dst_klass,
-                                                     int argnum) {
+                                                      klassOop src_klass,
+                                                      BasicType dst_type,
+                                                      klassOop dst_klass,
+                                                      int argnum,
+                                                      bool raw) {
   const char* err = NULL;
+  bool for_return = (argnum < 0);
 
   // just in case:
   if (src_type == T_ARRAY)  src_type = T_OBJECT;
   if (dst_type == T_ARRAY)  dst_type = T_OBJECT;
 
   // Produce some nice messages if VerifyMethodHandles is turned on:
-  if (!same_basic_type_for_arguments(src_type, dst_type, (argnum < 0))) {
+  if (!same_basic_type_for_arguments(src_type, dst_type, raw, for_return)) {
     if (src_type == T_OBJECT) {
+      if (raw && dst_type == T_INT && is_always_null_type(src_klass))
+        return NULL;    // OK to convert a null pointer to a garbage int
       err = ((argnum >= 0)
              ? "type mismatch: passing a %s for method argument #%d, which expects primitive %s"
              : "type mismatch: returning a %s, but caller expects primitive %s");
     } else if (dst_type == T_OBJECT) {
-      err = ((argnum < 0)
+      err = ((argnum >= 0)
              ? "type mismatch: passing a primitive %s for method argument #%d, which expects %s"
              : "type mismatch: returning a primitive %s, but caller expects %s");
     } else {
-      err = ((argnum < 0)
+      err = ((argnum >= 0)
              ? "type mismatch: passing a %s for method argument #%d, which expects %s"
              : "type mismatch: returning a %s, but caller expects %s");
     }
-  } else if (src_type == T_OBJECT && class_cast_needed(src_klass, dst_klass)) {
+  } else if (src_type == T_OBJECT && dst_type == T_OBJECT &&
+             class_cast_needed(src_klass, dst_klass)) {
     if (!class_cast_needed(dst_klass, src_klass)) {
-      err = ((argnum < 0)
+      if (raw)
+        return NULL;    // reverse cast is OK; the MH target is trusted to enforce it
+      err = ((argnum >= 0)
              ? "cast required: passing a %s for method argument #%d, which expects %s"
              : "cast required: returning a %s, but caller expects %s");
     } else {
-      err = ((argnum < 0)
+      err = ((argnum >= 0)
              ? "reference mismatch: passing a %s for method argument #%d, which expects %s"
              : "reference mismatch: returning a %s, but caller expects %s");
     }
@@ -1429,10 +1484,10 @@
       assert(this_pushes == slots_pushed, "BMH pushes one or two stack slots");
       assert(slots_pushed <= MethodHandlePushLimit, "");
     } else {
-      int prev_pushes = decode_MethodHandle_stack_pushes(target());
-      assert(this_pushes == slots_pushed + prev_pushes, "BMH stack motion must be correct");
+      int target_pushes = decode_MethodHandle_stack_pushes(target());
+      assert(this_pushes == slots_pushed + target_pushes, "BMH stack motion must be correct");
       // do not blow the stack; use a Java-based adapter if this limit is exceeded
-      if (slots_pushed + prev_pushes > MethodHandlePushLimit)
+      if (slots_pushed + target_pushes > MethodHandlePushLimit)
         err = "too many bound parameters";
     }
   }
@@ -1588,6 +1643,11 @@
   if (err == NULL) {
     // Check that the src/dest types are supplied if needed.
     switch (ek) {
+    case _adapter_check_cast:
+      if (src != T_OBJECT || dest != T_OBJECT) {
+        err = "adapter requires object src/dest conversion subfields";
+      }
+      break;
     case _adapter_prim_to_prim:
       if (!is_java_primitive(src) || !is_java_primitive(dest) || src == dest) {
         err = "adapter requires primitive src/dest conversion subfields"; break;
@@ -1616,9 +1676,9 @@
           err = "adapter requires src/dest conversion subfields for swap"; break;
         }
         int swap_size = type2size[src];
-        oop src_mtype  = sun_dyn_AdapterMethodHandle::type(target());
-        oop dest_mtype = sun_dyn_AdapterMethodHandle::type(mh());
-        int slot_limit = sun_dyn_AdapterMethodHandle::vmslots(src_mtype);
+        oop src_mtype  = sun_dyn_AdapterMethodHandle::type(mh());
+        oop dest_mtype = sun_dyn_AdapterMethodHandle::type(target());
+        int slot_limit = sun_dyn_AdapterMethodHandle::vmslots(target());
         int src_slot   = argslot;
         int dest_slot  = vminfo;
         bool rotate_up = (src_slot > dest_slot); // upward rotation
@@ -1729,22 +1789,22 @@
     // Make sure this adapter does not push too deeply.
     int slots_pushed = stack_move / stack_move_unit();
     int this_vmslots = java_dyn_MethodHandle::vmslots(mh());
-    int prev_vmslots = java_dyn_MethodHandle::vmslots(target());
-    if (slots_pushed != (this_vmslots - prev_vmslots)) {
+    int target_vmslots = java_dyn_MethodHandle::vmslots(target());
+    if (slots_pushed != (target_vmslots - this_vmslots)) {
       err = "stack_move inconsistent with previous and current MethodType vmslots";
     } else if (slots_pushed > 0)  {
       // verify stack_move against MethodHandlePushLimit
-      int prev_pushes = decode_MethodHandle_stack_pushes(target());
+      int target_pushes = decode_MethodHandle_stack_pushes(target());
       // do not blow the stack; use a Java-based adapter if this limit is exceeded
-      if (slots_pushed + prev_pushes > MethodHandlePushLimit) {
+      if (slots_pushed + target_pushes > MethodHandlePushLimit) {
         err = "adapter pushes too many parameters";
       }
     }
 
     // While we're at it, check that the stack motion decoder works:
-    DEBUG_ONLY(int prev_pushes = decode_MethodHandle_stack_pushes(target()));
+    DEBUG_ONLY(int target_pushes = decode_MethodHandle_stack_pushes(target()));
     DEBUG_ONLY(int this_pushes = decode_MethodHandle_stack_pushes(mh()));
-    assert(this_pushes == slots_pushed + prev_pushes, "AMH stack motion must be correct");
+    assert(this_pushes == slots_pushed + target_pushes, "AMH stack motion must be correct");
   }
 
   if (err == NULL && vminfo != 0) {
@@ -1761,7 +1821,11 @@
   if (err == NULL) {
     switch (ek) {
     case _adapter_retype_only:
-      err = check_method_type_passthrough(src_mtype(), dst_mtype());
+      err = check_method_type_passthrough(src_mtype(), dst_mtype(), false);
+      break;
+
+    case _adapter_retype_raw:
+      err = check_method_type_passthrough(src_mtype(), dst_mtype(), true);
       break;
 
     case _adapter_check_cast:
@@ -1821,6 +1885,7 @@
   // Now it's time to finish the case analysis and pick a MethodHandleEntry.
   switch (ek_orig) {
   case _adapter_retype_only:
+  case _adapter_retype_raw:
   case _adapter_check_cast:
   case _adapter_dup_args:
   case _adapter_drop_args:
@@ -1888,8 +1953,7 @@
   case _adapter_rot_args:
     {
       int swap_slots = type2size[src];
-      oop mtype      = sun_dyn_AdapterMethodHandle::type(mh());
-      int slot_limit = sun_dyn_AdapterMethodHandle::vmslots(mtype);
+      int slot_limit = sun_dyn_AdapterMethodHandle::vmslots(mh());
       int src_slot   = argslot;
       int dest_slot  = vminfo;
       int rotate     = (ek_orig == _adapter_swap_args) ? 0 : (src_slot > dest_slot) ? 1 : -1;
@@ -2133,7 +2197,7 @@
     guarantee(MethodHandlePushLimit >= 2 && MethodHandlePushLimit <= 0xFF,
               "MethodHandlePushLimit parameter must be in valid range");
     return MethodHandlePushLimit;
-  case MethodHandles::GC_JVM_STACK_MOVE_LIMIT:
+  case MethodHandles::GC_JVM_STACK_MOVE_UNIT:
     // return number of words per slot, signed according to stack direction
     return MethodHandles::stack_move_unit();
   }
@@ -2144,7 +2208,7 @@
 #ifndef PRODUCT
 #define EACH_NAMED_CON(template) \
     template(MethodHandles,GC_JVM_PUSH_LIMIT) \
-    template(MethodHandles,GC_JVM_STACK_MOVE_LIMIT) \
+    template(MethodHandles,GC_JVM_STACK_MOVE_UNIT) \
     template(MethodHandles,ETF_HANDLE_OR_METHOD_NAME) \
     template(MethodHandles,ETF_DIRECT_HANDLE) \
     template(MethodHandles,ETF_METHOD_NAME) \
@@ -2157,6 +2221,7 @@
     template(sun_dyn_MemberName,MN_SEARCH_INTERFACES) \
     template(sun_dyn_MemberName,VM_INDEX_UNINITIALIZED) \
     template(sun_dyn_AdapterMethodHandle,OP_RETYPE_ONLY) \
+    template(sun_dyn_AdapterMethodHandle,OP_RETYPE_RAW) \
     template(sun_dyn_AdapterMethodHandle,OP_CHECK_CAST) \
     template(sun_dyn_AdapterMethodHandle,OP_PRIM_TO_PRIM) \
     template(sun_dyn_AdapterMethodHandle,OP_REF_TO_PRIM) \
@@ -2345,10 +2410,12 @@
   // note: this explicit warning-producing stuff will be replaced by auto-detection of the JSR 292 classes
 
   if (!EnableMethodHandles) {
-    warning("JSR 292 method handles are disabled in this JVM.  Use -XX:+EnableMethodHandles to enable.");
+    warning("JSR 292 method handles are disabled in this JVM.  Use -XX:+UnlockExperimentalVMOptions -XX:+EnableMethodHandles to enable.");
     return;  // bind nothing
   }
 
+  bool enable_MH = true;
+
   {
     ThreadToNativeFromVM ttnfv(thread);
 
@@ -2356,14 +2423,33 @@
     if (env->ExceptionOccurred()) {
       MethodHandles::set_enabled(false);
       warning("JSR 292 method handle code is mismatched to this JVM.  Disabling support.");
+      enable_MH = false;
       env->ExceptionClear();
-    } else {
-      MethodHandles::set_enabled(true);
     }
   }
 
+  if (enable_MH) {
+    KlassHandle MHI_klass = SystemDictionaryHandles::MethodHandleImpl_klass();
+    if (MHI_klass.not_null()) {
+      symbolHandle raiseException_name = oopFactory::new_symbol_handle("raiseException", CHECK);
+      symbolHandle raiseException_sig  = oopFactory::new_symbol_handle("(ILjava/lang/Object;Ljava/lang/Object;)V", CHECK);
+      methodOop raiseException_method  = instanceKlass::cast(MHI_klass->as_klassOop())
+                    ->find_method(raiseException_name(), raiseException_sig());
+      if (raiseException_method != NULL && raiseException_method->is_static()) {
+        MethodHandles::set_raise_exception_method(raiseException_method);
+      } else {
+        warning("JSR 292 method handle code is mismatched to this JVM.  Disabling support.");
+        enable_MH = false;
+      }
+    }
+  }
+
+  if (enable_MH) {
+    MethodHandles::set_enabled(true);
+  }
+
   if (!EnableInvokeDynamic) {
-    warning("JSR 292 invokedynamic is disabled in this JVM.  Use -XX:+EnableInvokeDynamic to enable.");
+    warning("JSR 292 invokedynamic is disabled in this JVM.  Use -XX:+UnlockExperimentalVMOptions -XX:+EnableInvokeDynamic to enable.");
     return;  // bind nothing
   }
 
--- a/src/share/vm/prims/methodHandles.hpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/prims/methodHandles.hpp	Thu Oct 29 08:49:31 2009 -0700
@@ -32,8 +32,7 @@
   // See also  javaClasses for layouts java_dyn_Method{Handle,Type,Type::Form}.
  public:
   enum EntryKind {
-    _check_mtype,               // how a caller calls a MH
-    _wrong_method_type,         // what happens when there is a type mismatch
+    _raise_exception,           // stub for error generation from other stubs
     _invokestatic_mh,           // how a MH emulates invokestatic
     _invokespecial_mh,          // ditto for the other invokes...
     _invokevirtual_mh,
@@ -47,6 +46,7 @@
 
     _adapter_mh_first,     // adapter sequence goes here...
     _adapter_retype_only   = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY,
+    _adapter_retype_raw    = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW,
     _adapter_check_cast    = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_CHECK_CAST,
     _adapter_prim_to_prim  = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM,
     _adapter_ref_to_prim   = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM,
@@ -113,6 +113,8 @@
   static bool _enabled;
   static MethodHandleEntry* _entries[_EK_LIMIT];
   static const char*        _entry_names[_EK_LIMIT+1];
+  static jobject            _raise_exception_method;
+
   static bool ek_valid(EntryKind ek)            { return (uint)ek < (uint)_EK_LIMIT; }
   static bool conv_op_valid(int op)             { return (uint)op < (uint)CONV_OP_LIMIT; }
 
@@ -131,6 +133,16 @@
     _entries[ek] = me;
   }
 
+  static methodOop raise_exception_method() {
+    oop rem = JNIHandles::resolve(_raise_exception_method);
+    assert(rem == NULL || rem->is_method(), "");
+    return (methodOop) rem;
+  }
+  static void set_raise_exception_method(methodOop rem) {
+    assert(_raise_exception_method == NULL, "");
+    _raise_exception_method = JNIHandles::make_global(Handle(rem));
+  }
+
   static jint adapter_conversion(int conv_op, BasicType src, BasicType dest,
                                  int stack_move = 0, int vminfo = 0) {
     assert(conv_op_valid(conv_op), "oob");
@@ -243,7 +255,7 @@
   enum {
     // format of query to getConstant:
     GC_JVM_PUSH_LIMIT = 0,
-    GC_JVM_STACK_MOVE_LIMIT = 1,
+    GC_JVM_STACK_MOVE_UNIT = 1,
 
     // format of result from getTarget / encode_target:
     ETF_HANDLE_OR_METHOD_NAME = 0, // all available data (immediate MH or method)
@@ -261,7 +273,8 @@
                                               int insert_argnum, oop insert_type,
                                               int change_argnum, oop change_type,
                                               int delete_argnum,
-                                              oop dst_mtype, int dst_beg, int dst_end);
+                                              oop dst_mtype, int dst_beg, int dst_end,
+                                              bool raw = false);
   static const char* check_method_type_insertion(oop src_mtype,
                                                  int insert_argnum, oop insert_type,
                                                  oop dst_mtype) {
@@ -278,29 +291,29 @@
                                     change_argnum, change_type,
                                     -1, dst_mtype, 0, -1);
   }
-  static const char* check_method_type_passthrough(oop src_mtype, oop dst_mtype) {
+  static const char* check_method_type_passthrough(oop src_mtype, oop dst_mtype, bool raw) {
     oop no_ref = NULL;
     return check_method_type_change(src_mtype, 0, -1,
                                     -1, no_ref, -1, no_ref, -1,
-                                    dst_mtype, 0, -1);
+                                    dst_mtype, 0, -1, raw);
   }
 
   // These checkers operate on pairs of argument or return types:
   static const char* check_argument_type_change(BasicType src_type, klassOop src_klass,
                                                 BasicType dst_type, klassOop dst_klass,
-                                                int argnum);
+                                                int argnum, bool raw = false);
 
   static const char* check_argument_type_change(oop src_type, oop dst_type,
-                                                int argnum) {
+                                                int argnum, bool raw = false) {
     klassOop src_klass = NULL, dst_klass = NULL;
     BasicType src_bt = java_lang_Class::as_BasicType(src_type, &src_klass);
     BasicType dst_bt = java_lang_Class::as_BasicType(dst_type, &dst_klass);
     return check_argument_type_change(src_bt, src_klass,
-                                      dst_bt, dst_klass, argnum);
+                                      dst_bt, dst_klass, argnum, raw);
   }
 
-  static const char* check_return_type_change(oop src_type, oop dst_type) {
-    return check_argument_type_change(src_type, dst_type, -1);
+  static const char* check_return_type_change(oop src_type, oop dst_type, bool raw = false) {
+    return check_argument_type_change(src_type, dst_type, -1, raw);
   }
 
   static const char* check_return_type_change(BasicType src_type, klassOop src_klass,
@@ -357,9 +370,10 @@
                                               TRAPS);
 
   static bool same_basic_type_for_arguments(BasicType src, BasicType dst,
+                                            bool raw = false,
                                             bool for_return = false);
-  static bool same_basic_type_for_returns(BasicType src, BasicType dst) {
-    return same_basic_type_for_arguments(src, dst, true);
+  static bool same_basic_type_for_returns(BasicType src, BasicType dst, bool raw = false) {
+    return same_basic_type_for_arguments(src, dst, raw, true);
   }
 
   enum {                        // arg_mask values
--- a/src/share/vm/runtime/vmStructs.cpp	Wed Oct 28 10:37:17 2009 -0700
+++ b/src/share/vm/runtime/vmStructs.cpp	Thu Oct 29 08:49:31 2009 -0700
@@ -594,6 +594,7 @@
                                                                                                                                      \
   nonstatic_field(PcDesc,                      _pc_offset,                                    int)                                   \
   nonstatic_field(PcDesc,                      _scope_decode_offset,                          int)                                   \
+  nonstatic_field(PcDesc,                      _obj_decode_offset,                            int)                                   \
   nonstatic_field(PcDesc,                      _flags,                        PcDesc::PcDescFlags)                                   \
                                                                                                                                      \
   /***************************************************/                                                                              \
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/6891750/Test6891750.java	Thu Oct 29 08:49:31 2009 -0700
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2009 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+/**
+ * @test
+ * @bug 6891750
+ * @summary deopt blob kills values in O5
+ *
+ * @run main Test6891750
+ */
+
+abstract class Base6891750 extends Thread {
+    abstract public long m();
+}
+class Other6891750 extends Base6891750 {
+    public long m() {
+        return 0;
+    }
+}
+
+public class Test6891750 extends Base6891750 {
+    Base6891750 d;
+    volatile long  value = 9;
+
+    static int limit = 400000;
+
+    Test6891750() {
+        d = this;
+
+    }
+    public long m() {
+        return value;
+    }
+
+    public long test(boolean doit) {
+        if (doit) {
+            long total0 = 0;
+            long total1 = 0;
+            long total2 = 0;
+            long total3 = 0;
+            long total4 = 0;
+            long total5 = 0;
+            long total6 = 0;
+            long total7 = 0;
+            long total8 = 0;
+            long total9 = 0;
+            for (int i = 0; i < limit; i++) {
+                total0 += d.m();
+                total1 += d.m();
+                total2 += d.m();
+                total3 += d.m();
+                total4 += d.m();
+                total5 += d.m();
+                total6 += d.m();
+                total7 += d.m();
+                total8 += d.m();
+                total9 += d.m();
+            }
+            return total0 + total1 + total2 + total3 + total4 + total5 + total6 + total7 + total8 + total9;
+        }
+        return 0;
+    }
+
+    public void run() {
+        long result = test(true);
+        for (int i = 0; i < 300; i++) {
+            long result2 = test(true);
+            if (result != result2) {
+                throw new InternalError(result + " != " + result2);
+            }
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        Test6891750 Test6891750 = new Test6891750();
+        // warm it up
+        for (int i = 0; i < 200000; i++) {
+            Test6891750.test(false);
+        }
+        // set in off running
+        Test6891750.start();
+        Thread.sleep(2000);
+
+        // Load a class to invalidate CHA
+        new Other6891750();
+    }
+}