Initial SIMDBC interpreter.

runtime/vm/dart_entry.h

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_DART_ENTRY_H_
 #define VM_DART_ENTRY_H_
 
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
 
@@ skipping 68 matching lines @@
     kNamedEntrySize,
   };
 
   static intptr_t LengthFor(intptr_t count) {
     // Add 1 for the terminating null.
     return kFirstNamedEntryIndex + (kNamedEntrySize * count) + 1;
   }
 
   static RawArray* NewNonCached(intptr_t count, bool canonicalize = true);
 
+  // Used by Simulator to parse argument descriptors.
+  static intptr_t name_index(intptr_t index) {
+    return kFirstNamedEntryIndex +
+           (index * kNamedEntrySize) +
+           kNameOffset;
+  }
+
+  static intptr_t position_index(intptr_t index) {
+    return kFirstNamedEntryIndex +
+           (index * kNamedEntrySize) +
+           kPositionOffset;
+  }
+
   const Array& array_;
 
   // A cache of VM heap allocated arguments descriptors.
   static RawArray* cached_args_descriptors_[kCachedDescriptorCount];
 
   friend class SnapshotReader;
   friend class SnapshotWriter;
+  friend class Simulator;
   DISALLOW_COPY_AND_ASSIGN(ArgumentsDescriptor);
 };
 
 
 // DartEntry abstracts functionality needed to resolve dart functions
 // and invoke them from C++.
 class DartEntry : public AllStatic {
  public:
   // On success, returns a RawInstance.  On failure, a RawError.
   typedef RawObject* (*invokestub)(const Code& target_code,
@@ skipping 66 matching lines @@
   //
   // Returns null on success, a RawError on failure.
   static RawObject* MapSetAt(const Instance& map,
                              const Instance& key,
                              const Instance& value);
 };
 
 }  // namespace dart
 
 #endif  // VM_DART_ENTRY_H_