Fix leaf floating point runtime calls on ARM (work still needed in simulator).

runtime/vm/runtime_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_RUNTIME_ENTRY_H_
 #define VM_RUNTIME_ENTRY_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/flags.h"
 #include "vm/native_arguments.h"
 
 namespace dart {
 
 DECLARE_FLAG(bool, trace_runtime_calls);
 
 typedef void (*RuntimeFunction)(NativeArguments arguments);
 
 
 // Class RuntimeEntry is used to encapsulate runtime functions, it includes
 // the entry point for the runtime function and the number of arguments expected
 // by the function.
 class RuntimeEntry : public ValueObject {
  public:
   RuntimeEntry(const char* name, RuntimeFunction function,
                int argument_count, bool is_leaf)
+  // TODO(regis): In order to simulate leaf runtime calls taking floating point
+  // arguments, we need to add an 'is_float' flag.
       : name_(name),
         function_(function),
         argument_count_(argument_count),
         is_leaf_(is_leaf) { }
   ~RuntimeEntry() {}
 
   const char* name() const { return name_; }
   RuntimeFunction function() const { return function_; }
   int argument_count() const { return argument_count_; }
   bool is_leaf() const { return is_leaf_; }
@@ skipping 45 matching lines @@
 
 #define END_LEAF_RUNTIME_ENTRY }
 
 #define DECLARE_LEAF_RUNTIME_ENTRY(type, name, ...)                            \
   extern const RuntimeEntry k##name##RuntimeEntry;                             \
   extern "C" type DLRT_##name(__VA_ARGS__)
 
 }  // namespace dart
 
 #endif  // VM_RUNTIME_ENTRY_H_