changeset 2486:b79e8b4ecd76

Merge
author never
date Tue, 17 May 2011 19:15:34 -0700
parents 2848194272f4 a80577f854f9
children 1be2f0c40a34 2b27ef5c2173
files src/share/vm/prims/methodHandles.cpp
diffstat 15 files changed, 331 insertions(+), 61 deletions(-) [+]
line wrap: on
line diff
--- a/agent/src/share/classes/sun/jvm/hotspot/CommandProcessor.java	Tue May 17 15:43:46 2011 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/CommandProcessor.java	Tue May 17 19:15:34 2011 -0700
@@ -1028,7 +1028,12 @@
                                     if (AddressOps.equal(val, value)) {
                                         if (!printed) {
                                             printed = true;
-                                            blob.printOn(out);
+                                            try {
+                                                blob.printOn(out);
+                                            } catch (Exception e) {
+                                                out.println("Exception printing blob at " + base);
+                                                e.printStackTrace();
+                                            }
                                         }
                                         out.println("found at " + base + "\n");
                                     }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/code/AdapterBlob.java	Tue May 17 19:15:34 2011 -0700
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+package sun.jvm.hotspot.code;
+
+import java.util.*;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.types.*;
+
+public class AdapterBlob extends CodeBlob {
+  static {
+    VM.registerVMInitializedObserver(new Observer() {
+        public void update(Observable o, Object data) {
+          initialize(VM.getVM().getTypeDataBase());
+        }
+      });
+  }
+
+  private static void initialize(TypeDataBase db) {
+    // Type type = db.lookupType("AdapterBlob");
+
+    // // FIXME: add any needed fields
+  }
+
+  public AdapterBlob(Address addr) {
+    super(addr);
+  }
+
+  public boolean isAdapterBlob() {
+    return true;
+  }
+
+  public String getName() {
+    return "AdapterBlob: " + super.getName();
+  }
+}
--- a/agent/src/share/classes/sun/jvm/hotspot/code/CodeBlob.java	Tue May 17 15:43:46 2011 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/code/CodeBlob.java	Tue May 17 19:15:34 2011 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2011, Oracle and/or its affiliates. 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
@@ -93,6 +93,8 @@
   public boolean isUncommonTrapStub()   { return false; }
   public boolean isExceptionStub()      { return false; }
   public boolean isSafepointStub()      { return false; }
+  public boolean isRicochetBlob()       { return false; }
+  public boolean isAdapterBlob()        { return false; }
 
   // Fine grain nmethod support: isNmethod() == isJavaMethod() || isNativeMethod() || isOSRMethod()
   public boolean isJavaMethod()         { return false; }
--- a/agent/src/share/classes/sun/jvm/hotspot/code/CodeCache.java	Tue May 17 15:43:46 2011 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/code/CodeCache.java	Tue May 17 19:15:34 2011 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2011, Oracle and/or its affiliates. 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
@@ -57,6 +57,8 @@
     virtualConstructor.addMapping("BufferBlob", BufferBlob.class);
     virtualConstructor.addMapping("nmethod", NMethod.class);
     virtualConstructor.addMapping("RuntimeStub", RuntimeStub.class);
+    virtualConstructor.addMapping("RicochetBlob", RicochetBlob.class);
+    virtualConstructor.addMapping("AdapterBlob", AdapterBlob.class);
     virtualConstructor.addMapping("SafepointBlob", SafepointBlob.class);
     virtualConstructor.addMapping("DeoptimizationBlob", DeoptimizationBlob.class);
     if (VM.getVM().isServerCompiler()) {
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/code/RicochetBlob.java	Tue May 17 19:15:34 2011 -0700
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+package sun.jvm.hotspot.code;
+
+import java.util.*;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.types.*;
+
+/** RicochetBlob (currently only used by Compiler 2) */
+
+public class RicochetBlob extends SingletonBlob {
+  static {
+    VM.registerVMInitializedObserver(new Observer() {
+        public void update(Observable o, Object data) {
+          initialize(VM.getVM().getTypeDataBase());
+        }
+      });
+  }
+
+  private static void initialize(TypeDataBase db) {
+    // Type type = db.lookupType("RicochetBlob");
+
+    // FIXME: add any needed fields
+  }
+
+  public RicochetBlob(Address addr) {
+    super(addr);
+  }
+
+  public boolean isRicochetBlob() {
+    return true;
+  }
+}
--- a/src/cpu/x86/vm/methodHandles_x86.cpp	Tue May 17 15:43:46 2011 -0700
+++ b/src/cpu/x86/vm/methodHandles_x86.cpp	Tue May 17 19:15:34 2011 -0700
@@ -389,7 +389,7 @@
   }
 }
 
-#ifndef PRODUCT
+#ifdef ASSERT
 void MethodHandles::RicochetFrame::verify_offsets() {
   // Check compatibility of this struct with the more generally used offsets of class frame:
   int ebp_off = sender_link_offset_in_bytes();  // offset from struct base to local rbp value
--- a/src/share/vm/ci/ciMethodHandle.cpp	Tue May 17 15:43:46 2011 -0700
+++ b/src/share/vm/ci/ciMethodHandle.cpp	Tue May 17 19:15:34 2011 -0700
@@ -43,7 +43,7 @@
   methodHandle callee(_callee->get_methodOop());
   // We catch all exceptions here that could happen in the method
   // handle compiler and stop the VM.
-  MethodHandleCompiler mhc(h, callee, _profile->count(), is_invokedynamic, THREAD);
+  MethodHandleCompiler mhc(h, callee->name(), callee->signature(), _profile->count(), is_invokedynamic, THREAD);
   if (!HAS_PENDING_EXCEPTION) {
     methodHandle m = mhc.compile(THREAD);
     if (!HAS_PENDING_EXCEPTION) {
--- a/src/share/vm/interpreter/bytecodeTracer.cpp	Tue May 17 15:43:46 2011 -0700
+++ b/src/share/vm/interpreter/bytecodeTracer.cpp	Tue May 17 19:15:34 2011 -0700
@@ -203,11 +203,14 @@
   if (value == NULL) {
     st->print_cr(" NULL");
   } else if (java_lang_String::is_instance(value)) {
-    EXCEPTION_MARK;
-    Handle h_value (THREAD, value);
-    Symbol* sym = java_lang_String::as_symbol(h_value, CATCH);
-    print_symbol(sym, st);
-    sym->decrement_refcount();
+    char buf[40];
+    int len = java_lang_String::utf8_length(value);
+    java_lang_String::as_utf8_string(value, buf, sizeof(buf));
+    if (len >= (int)sizeof(buf)) {
+      st->print_cr(" %s...[%d]", buf, len);
+    } else {
+      st->print_cr(" %s", buf);
+    }
   } else {
     st->print_cr(" " PTR_FORMAT, (intptr_t) value);
   }
--- a/src/share/vm/opto/idealGraphPrinter.cpp	Tue May 17 15:43:46 2011 -0700
+++ b/src/share/vm/opto/idealGraphPrinter.cpp	Tue May 17 19:15:34 2011 -0700
@@ -615,6 +615,7 @@
       }
     }
 
+#ifdef ASSERT
     if (node->debug_orig() != NULL) {
       stringStream dorigStream;
       Node* dorig = node->debug_orig();
@@ -629,6 +630,7 @@
       }
       print_prop("debug_orig", dorigStream.as_string());
     }
+#endif
 
     if (_chaitin && _chaitin != (PhaseChaitin *)0xdeadbeef) {
       buffer[0] = 0;
--- a/src/share/vm/prims/methodHandleWalk.cpp	Tue May 17 15:43:46 2011 -0700
+++ b/src/share/vm/prims/methodHandleWalk.cpp	Tue May 17 19:15:34 2011 -0700
@@ -265,7 +265,7 @@
         assert(dest == arg_state->_type, "");
         ArgToken arg = arg_state->_arg;
         ArgToken new_arg = make_conversion(T_OBJECT, dest_klass, Bytecodes::_checkcast, arg, CHECK_(empty));
-        assert(arg.token_type() >= tt_symbolic || arg.index() == new_arg.index(), "should be the same index");
+        assert(!arg.has_index() || arg.index() == new_arg.index(), "should be the same index");
         debug_only(dest_klass = (klassOop)badOop);
         break;
       }
@@ -443,8 +443,10 @@
             ret = make_conversion(T_OBJECT, rklass, Bytecodes::_checkcast, ret, CHECK_(empty));
           }
         }
-        int ret_slot = arg_slot + (retain_original_args ? coll_slots : 0);
-        change_argument(T_VOID, ret_slot, rtype, ret);
+        if (rtype != T_VOID) {
+          int ret_slot = arg_slot + (retain_original_args ? coll_slots : 0);
+          change_argument(T_VOID, ret_slot, rtype, ret);
+        }
         break;
       }
 
@@ -690,9 +692,8 @@
 // -----------------------------------------------------------------------------
 // MethodHandleCompiler
 
-MethodHandleCompiler::MethodHandleCompiler(Handle root, methodHandle callee, int invoke_count, bool is_invokedynamic, TRAPS)
+MethodHandleCompiler::MethodHandleCompiler(Handle root, Symbol* name, Symbol* signature, int invoke_count, bool is_invokedynamic, TRAPS)
   : MethodHandleWalker(root, is_invokedynamic, THREAD),
-    _callee(callee),
     _invoke_count(invoke_count),
     _thread(THREAD),
     _bytecode(THREAD, 50),
@@ -706,8 +707,8 @@
   (void) _constants.append(NULL);
 
   // Set name and signature index.
-  _name_index      = cpool_symbol_put(_callee->name());
-  _signature_index = cpool_symbol_put(_callee->signature());
+  _name_index      = cpool_symbol_put(name);
+  _signature_index = cpool_symbol_put(signature);
 
   // Get return type klass.
   Handle first_mtype(THREAD, chain().method_type_oop());
@@ -715,7 +716,8 @@
   _rtype = java_lang_Class::as_BasicType(java_lang_invoke_MethodType::rtype(first_mtype()), &_rklass);
   if (_rtype == T_ARRAY)  _rtype = T_OBJECT;
 
-  int params = _callee->size_of_parameters();  // Incoming arguments plus receiver.
+  ArgumentSizeComputer args(signature);
+  int params = args.size() + 1;  // Incoming arguments plus receiver.
   _num_params = for_invokedynamic() ? params - 1 : params;  // XXX Check if callee is static?
 }
 
@@ -733,7 +735,7 @@
 }
 
 
-void MethodHandleCompiler::emit_bc(Bytecodes::Code op, int index) {
+void MethodHandleCompiler::emit_bc(Bytecodes::Code op, int index, int args_size) {
   Bytecodes::check(op);  // Are we legal?
 
   switch (op) {
@@ -809,6 +811,14 @@
   case Bytecodes::_d2i:
   case Bytecodes::_d2l:
   case Bytecodes::_d2f:
+  case Bytecodes::_iaload:
+  case Bytecodes::_laload:
+  case Bytecodes::_faload:
+  case Bytecodes::_daload:
+  case Bytecodes::_aaload:
+  case Bytecodes::_baload:
+  case Bytecodes::_caload:
+  case Bytecodes::_saload:
   case Bytecodes::_ireturn:
   case Bytecodes::_lreturn:
   case Bytecodes::_freturn:
@@ -822,9 +832,14 @@
   // bi
   case Bytecodes::_ldc:
     assert(Bytecodes::format_bits(op, false) == (Bytecodes::_fmt_b|Bytecodes::_fmt_has_k), "wrong bytecode format");
-    assert((char) index == index, "index does not fit in 8-bit");
-    _bytecode.push(op);
-    _bytecode.push(index);
+    if (index == (index & 0xff)) {
+      _bytecode.push(op);
+      _bytecode.push(index);
+    } else {
+      _bytecode.push(Bytecodes::_ldc_w);
+      _bytecode.push(index >> 8);
+      _bytecode.push(index);
+    }
     break;
 
   case Bytecodes::_iload:
@@ -838,9 +853,16 @@
   case Bytecodes::_dstore:
   case Bytecodes::_astore:
     assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_bi, "wrong bytecode format");
-    assert((char) index == index, "index does not fit in 8-bit");
-    _bytecode.push(op);
-    _bytecode.push(index);
+    if (index == (index & 0xff)) {
+      _bytecode.push(op);
+      _bytecode.push(index);
+    } else {
+      // doesn't fit in a u2
+      _bytecode.push(Bytecodes::_wide);
+      _bytecode.push(op);
+      _bytecode.push(index >> 8);
+      _bytecode.push(index);
+    }
     break;
 
   // bkk
@@ -848,7 +870,7 @@
   case Bytecodes::_ldc2_w:
   case Bytecodes::_checkcast:
     assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_bkk, "wrong bytecode format");
-    assert((short) index == index, "index does not fit in 16-bit");
+    assert((unsigned short) index == index, "index does not fit in 16-bit");
     _bytecode.push(op);
     _bytecode.push(index >> 8);
     _bytecode.push(index);
@@ -859,12 +881,23 @@
   case Bytecodes::_invokespecial:
   case Bytecodes::_invokevirtual:
     assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_bJJ, "wrong bytecode format");
-    assert((short) index == index, "index does not fit in 16-bit");
+    assert((unsigned short) index == index, "index does not fit in 16-bit");
     _bytecode.push(op);
     _bytecode.push(index >> 8);
     _bytecode.push(index);
     break;
 
+  case Bytecodes::_invokeinterface:
+    assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_bJJ, "wrong bytecode format");
+    assert((unsigned short) index == index, "index does not fit in 16-bit");
+    assert(args_size > 0, "valid args_size");
+    _bytecode.push(op);
+    _bytecode.push(index >> 8);
+    _bytecode.push(index);
+    _bytecode.push(args_size);
+    _bytecode.push(0);
+    break;
+
   default:
     ShouldNotReachHere();
   }
@@ -983,7 +1016,8 @@
                                       const ArgToken& src, TRAPS) {
 
   BasicType srctype = src.basic_type();
-  int index = src.index();
+  TokenType tt = src.token_type();
+  int index = -1;
 
   switch (op) {
   case Bytecodes::_i2l:
@@ -1004,18 +1038,31 @@
   case Bytecodes::_d2i:
   case Bytecodes::_d2l:
   case Bytecodes::_d2f:
-    emit_load(srctype, index);
+    if (tt == tt_constant) {
+      emit_load_constant(src);
+    } else {
+      emit_load(srctype, src.index());
+    }
     stack_pop(srctype);  // pop the src type
     emit_bc(op);
     stack_push(type);    // push the dest value
-    if (srctype != type)
+    if (tt != tt_constant)
+      index = src.index();
+    if (srctype != type || index == -1)
       index = new_local_index(type);
     emit_store(type, index);
     break;
 
   case Bytecodes::_checkcast:
-    emit_load(srctype, index);
+    if (tt == tt_constant) {
+      emit_load_constant(src);
+    } else {
+      emit_load(srctype, src.index());
+      index = src.index();
+    }
     emit_bc(op, cpool_klass_put(tk));
+    if (index == -1)
+      index = new_local_index(type);
     emit_store(srctype, index);
     break;
 
@@ -1058,6 +1105,11 @@
   Symbol*  name      = m->name();
   Symbol*  signature = m->signature();
 
+  // Count the number of arguments, not the size
+  ArgumentCount asc(signature);
+  assert(argc == asc.size() + ((op == Bytecodes::_invokestatic || op == Bytecodes::_invokedynamic) ? 0 : 1),
+         "argc mismatch");
+
   if (tailcall) {
     // Actually, in order to make these methods more recognizable,
     // let's put them in holder class MethodHandle.  That way stack
@@ -1106,9 +1158,13 @@
   case Bytecodes::_invokevirtual:
     emit_bc(op, methodref_index);
     break;
-  case Bytecodes::_invokeinterface:
-    Unimplemented();
+
+  case Bytecodes::_invokeinterface: {
+    ArgumentSizeComputer asc(signature);
+    emit_bc(op, methodref_index, asc.size() + 1);
     break;
+  }
+
   default:
     ShouldNotReachHere();
   }
@@ -1117,6 +1173,7 @@
   // Otherwise, make a recursive call to some helper routine.
   BasicType rbt = m->result_type();
   if (rbt == T_ARRAY)  rbt = T_OBJECT;
+  stack_push(rbt);  // The return value is already pushed onto the stack.
   ArgToken ret;
   if (tailcall) {
     if (rbt != _rtype) {
@@ -1171,7 +1228,6 @@
     ret = ArgToken();  // Dummy return value.
   }
   else {
-    stack_push(rbt);  // The return value is already pushed onto the stack.
     int index = new_local_index(rbt);
     switch (rbt) {
     case T_BOOLEAN: case T_BYTE: case T_CHAR:  case T_SHORT:
@@ -1196,8 +1252,32 @@
                                  const MethodHandleWalker::ArgToken& base,
                                  const MethodHandleWalker::ArgToken& offset,
                                  TRAPS) {
-  Unimplemented();
-  return ArgToken();
+  switch (base.token_type()) {
+    case tt_parameter:
+    case tt_temporary:
+      emit_load(base.basic_type(), base.index());
+      break;
+    case tt_constant:
+      emit_load_constant(base);
+      break;
+    default:
+      ShouldNotReachHere();
+  }
+  switch (offset.token_type()) {
+    case tt_parameter:
+    case tt_temporary:
+      emit_load(offset.basic_type(), offset.index());
+      break;
+    case tt_constant:
+      emit_load_constant(offset);
+      break;
+    default:
+      ShouldNotReachHere();
+  }
+  emit_bc(op);
+  int index = new_local_index(type);
+  emit_store(type, index);
+  return ArgToken(tt_temporary, type, index);
 }
 
 
@@ -1372,12 +1452,10 @@
     return s;
   }
   ArgToken token(const char* str) {
-    jvalue string_con;
-    string_con.j = (intptr_t) str;
-    return ArgToken(tt_symbolic, T_LONG, string_con);
+    return ArgToken(str);
   }
   const char* string(ArgToken token) {
-    return (const char*) (intptr_t) token.get_jlong();
+    return token.str();
   }
   void start_params() {
     _param_state <<= 1;
--- a/src/share/vm/prims/methodHandleWalk.hpp	Tue May 17 15:43:46 2011 -0700
+++ b/src/share/vm/prims/methodHandleWalk.hpp	Tue May 17 19:15:34 2011 -0700
@@ -126,26 +126,34 @@
     Handle    _handle;
 
   public:
-    ArgToken(TokenType tt = tt_illegal) : _tt(tt) {}
-    ArgToken(TokenType tt, BasicType bt, jvalue value) : _tt(tt), _bt(bt), _value(value) {}
+    ArgToken(TokenType tt = tt_illegal) : _tt(tt) {
+      assert(tt == tt_illegal || tt == tt_void, "invalid token type");
+    }
 
     ArgToken(TokenType tt, BasicType bt, int index) : _tt(tt), _bt(bt) {
+      assert(_tt == tt_parameter || _tt == tt_temporary, "must have index");
       _value.i = index;
     }
 
-    ArgToken(TokenType tt, BasicType bt, Handle value) : _tt(tt), _bt(bt) {
-      _handle = value;
+    ArgToken(BasicType bt, jvalue value) : _tt(tt_constant), _bt(bt), _value(value) {}
+    ArgToken(BasicType bt, Handle value) : _tt(tt_constant), _bt(bt), _handle(value) {}
+
+
+    ArgToken(const char* str) : _tt(tt_symbolic), _bt(T_LONG) {
+      _value.j = (intptr_t)str;
     }
 
     TokenType token_type()  const { return _tt; }
     BasicType basic_type()  const { return _bt; }
-    int       index()       const { return _value.i; }
-    Handle    object()      const { return _handle; }
+    bool      has_index()   const { return _tt == tt_parameter || _tt == tt_temporary; }
+    int       index()       const { assert(has_index(), "must have index");; return _value.i; }
+    Handle    object()      const { assert(_tt == tt_constant, "value type"); return _handle; }
+    const char* str()       const { assert(_tt == tt_symbolic, "string type"); return (const char*)_value.j; }
 
-    jint      get_jint()    const { return _value.i; }
-    jlong     get_jlong()   const { return _value.j; }
-    jfloat    get_jfloat()  const { return _value.f; }
-    jdouble   get_jdouble() const { return _value.d; }
+    jint      get_jint()    const { assert(_tt == tt_constant, "value types"); return _value.i; }
+    jlong     get_jlong()   const { assert(_tt == tt_constant, "value types"); return _value.j; }
+    jfloat    get_jfloat()  const { assert(_tt == tt_constant, "value types"); return _value.f; }
+    jdouble   get_jdouble() const { assert(_tt == tt_constant, "value types"); return _value.d; }
   };
 
   // Abstract interpretation state:
@@ -256,7 +264,6 @@
 // The IR happens to be JVM bytecodes.
 class MethodHandleCompiler : public MethodHandleWalker {
 private:
-  methodHandle _callee;
   int          _invoke_count;  // count the original call site has been executed
   KlassHandle  _rklass;        // Return type for casting.
   BasicType    _rtype;
@@ -404,7 +411,7 @@
     return cpool_oop_reference_put(JVM_CONSTANT_NameAndType, name_index, signature_index);
   }
 
-  void emit_bc(Bytecodes::Code op, int index = 0);
+  void emit_bc(Bytecodes::Code op, int index = 0, int args_size = -1);
   void emit_load(BasicType bt, int index);
   void emit_store(BasicType bt, int index);
   void emit_load_constant(ArgToken arg);
@@ -414,10 +421,10 @@
   }
   virtual ArgToken make_oop_constant(oop con, TRAPS) {
     Handle h(THREAD, con);
-    return ArgToken(tt_constant, T_OBJECT, h);
+    return ArgToken(T_OBJECT, h);
   }
   virtual ArgToken make_prim_constant(BasicType type, jvalue* con, TRAPS) {
-    return ArgToken(tt_constant, type, *con);
+    return ArgToken(type, *con);
   }
 
   virtual ArgToken make_conversion(BasicType type, klassOop tk, Bytecodes::Code op, const ArgToken& src, TRAPS);
@@ -431,7 +438,7 @@
   methodHandle get_method_oop(TRAPS) const;
 
 public:
-  MethodHandleCompiler(Handle root, methodHandle callee, int invoke_count, bool for_invokedynamic, TRAPS);
+  MethodHandleCompiler(Handle root, Symbol* name, Symbol* signature, int invoke_count, bool for_invokedynamic, TRAPS);
 
   // Compile the given MH chain into bytecode.
   methodHandle compile(TRAPS);
--- a/src/share/vm/prims/methodHandles.cpp	Tue May 17 15:43:46 2011 -0700
+++ b/src/share/vm/prims/methodHandles.cpp	Tue May 17 19:15:34 2011 -0700
@@ -25,9 +25,11 @@
 #include "precompiled.hpp"
 #include "classfile/symbolTable.hpp"
 #include "interpreter/interpreter.hpp"
+#include "interpreter/oopMapCache.hpp"
 #include "memory/allocation.inline.hpp"
 #include "memory/oopFactory.hpp"
 #include "prims/methodHandles.hpp"
+#include "prims/methodHandleWalk.hpp"
 #include "runtime/javaCalls.hpp"
 #include "runtime/reflection.hpp"
 #include "runtime/signature.hpp"
@@ -2599,6 +2601,50 @@
   }
 }
 
+#ifdef ASSERT
+
+extern "C"
+void print_method_handle(oop mh);
+
+static void stress_method_handle_walk_impl(Handle mh, TRAPS) {
+  if (StressMethodHandleWalk) {
+    // Exercise the MethodHandleWalk code in various ways and validate
+    // the resulting method oop.  Some of these produce output so they
+    // are guarded under Verbose.
+    ResourceMark rm;
+    HandleMark hm;
+    if (Verbose) {
+      print_method_handle(mh());
+    }
+    TempNewSymbol name = SymbolTable::new_symbol("invoke", CHECK);
+    Handle mt = java_lang_invoke_MethodHandle::type(mh());
+    TempNewSymbol signature = java_lang_invoke_MethodType::as_signature(mt(), true, CHECK);
+    MethodHandleCompiler mhc(mh, name, signature, 10000, false, CHECK);
+    methodHandle m = mhc.compile(CHECK);
+    if (Verbose) {
+      m->print_codes();
+    }
+    InterpreterOopMap mask;
+    OopMapCache::compute_one_oop_map(m, m->code_size() - 1, &mask);
+  }
+}
+
+static void stress_method_handle_walk(Handle mh, TRAPS) {
+  stress_method_handle_walk_impl(mh, THREAD);
+  if (HAS_PENDING_EXCEPTION) {
+    oop ex = PENDING_EXCEPTION;
+    CLEAR_PENDING_EXCEPTION;
+    tty->print("StressMethodHandleWalk: ");
+    java_lang_Throwable::print(ex, tty);
+    tty->cr();
+  }
+}
+#else
+
+static void stress_method_handle_walk(Handle mh, TRAPS) {}
+
+#endif
+
 //
 // Here are the native methods on sun.invoke.MethodHandleImpl.
 // They are the private interface between this JVM and the HotSpot-specific
@@ -2666,6 +2712,7 @@
   }
 
   MethodHandles::init_DirectMethodHandle(mh, m, (do_dispatch != JNI_FALSE), CHECK);
+  stress_method_handle_walk(mh, CHECK);
 }
 JVM_END
 
@@ -2694,11 +2741,11 @@
                                                        receiver_limit,
                                                        decode_flags,
                                                        CHECK);
-    return;
+  } else {
+    // Build a BMH on top of a DMH or another BMH:
+    MethodHandles::init_BoundMethodHandle(mh, target, argnum, CHECK);
   }
-
-  // Build a BMH on top of a DMH or another BMH:
-  MethodHandles::init_BoundMethodHandle(mh, target, argnum, CHECK);
+  stress_method_handle_walk(mh, CHECK);
 }
 JVM_END
 
@@ -2716,6 +2763,7 @@
   assert(java_lang_invoke_MethodHandle::vmentry(mh()) == NULL, "must be safely null");
 
   MethodHandles::init_AdapterMethodHandle(mh, target, argnum, CHECK);
+  stress_method_handle_walk(mh, CHECK);
 }
 JVM_END
 
--- a/src/share/vm/runtime/globals.hpp	Tue May 17 15:43:46 2011 -0700
+++ b/src/share/vm/runtime/globals.hpp	Tue May 17 19:15:34 2011 -0700
@@ -3724,6 +3724,9 @@
   diagnostic(bool, OptimizeMethodHandles, true,                             \
           "when constructing method handles, try to improve them")          \
                                                                             \
+  develop(bool, StressMethodHandleWalk, false,                              \
+          "Process all method handles with MethodHandleWalk")               \
+                                                                            \
   diagnostic(bool, UseRicochetFrames, true,                                 \
           "use ricochet stack frames for method handle combination, "       \
           "if the platform supports them")                                  \
--- a/src/share/vm/runtime/thread.cpp	Tue May 17 15:43:46 2011 -0700
+++ b/src/share/vm/runtime/thread.cpp	Tue May 17 19:15:34 2011 -0700
@@ -2861,6 +2861,7 @@
 }
 
 
+#ifdef ASSERT
 // Print or validate the layout of stack frames
 void JavaThread::print_frame_layout(int depth, bool validate_only) {
   ResourceMark rm;
@@ -2878,7 +2879,7 @@
     values.print();
   }
 }
-
+#endif
 
 void JavaThread::trace_stack_from(vframe* start_vf) {
   ResourceMark rm;
--- a/src/share/vm/runtime/vmStructs.cpp	Tue May 17 15:43:46 2011 -0700
+++ b/src/share/vm/runtime/vmStructs.cpp	Tue May 17 19:15:34 2011 -0700
@@ -783,6 +783,7 @@
   nonstatic_field(nmethod,             _osr_link,                                     nmethod*)                              \
   nonstatic_field(nmethod,             _scavenge_root_link,                           nmethod*)                              \
   nonstatic_field(nmethod,             _scavenge_root_state,                          jbyte)                                 \
+  nonstatic_field(nmethod,             _state,                                        unsigned char)                         \
   nonstatic_field(nmethod,             _exception_offset,                             int)                                   \
   nonstatic_field(nmethod,             _deoptimize_offset,                            int)                                   \
   nonstatic_field(nmethod,             _orig_pc_offset,                               int)                                   \
@@ -800,6 +801,8 @@
   nonstatic_field(nmethod,             _osr_entry_point,                              address)                               \
   nonstatic_field(nmethod,             _lock_count,                                   jint)                                  \
   nonstatic_field(nmethod,             _stack_traversal_mark,                         long)                                  \
+  nonstatic_field(nmethod,             _compile_id,                                   int)                                   \
+  nonstatic_field(nmethod,             _marked_for_deoptimization,                    bool)                                  \
                                                                                                                                      \
   /********************************/                                                                                                 \
   /* JavaCalls (NOTE: incomplete) */                                                                                                 \
@@ -1310,11 +1313,13 @@
                                                                           \
   declare_toplevel_type(CodeBlob)                                         \
   declare_type(BufferBlob,            CodeBlob)                           \
-  declare_type(nmethod,       CodeBlob)                           \
+  declare_type(AdapterBlob,           BufferBlob)                         \
+  declare_type(nmethod,               CodeBlob)                           \
   declare_type(RuntimeStub,           CodeBlob)                           \
   declare_type(SingletonBlob,         CodeBlob)                           \
   declare_type(SafepointBlob,         SingletonBlob)                      \
   declare_type(DeoptimizationBlob,    SingletonBlob)                      \
+  declare_type(RicochetBlob,          SingletonBlob)                      \
   declare_c2_type(ExceptionBlob,      SingletonBlob)                      \
   declare_c2_type(UncommonTrapBlob,   CodeBlob)                           \
                                                                           \