Initial revision of ARM simulator and (empty) MIPS simulator.

runtime/vm/isolate.cc

Index: runtime/vm/isolate.cc
===================================================================
--- runtime/vm/isolate.cc	(revision 17504)
+++ runtime/vm/isolate.cc	(working copy)
@@ -17,6 +17,7 @@
 #include "vm/object_store.h"
 #include "vm/parser.h"
 #include "vm/port.h"
+#include "vm/simulator.h"
 #include "vm/stack_frame.h"
 #include "vm/stub_code.h"
 #include "vm/symbols.h"
@@ -270,6 +271,7 @@
       api_state_(NULL),
       stub_code_(NULL),
       debugger_(NULL),
+      simulator_(NULL),
       long_jump_base_(NULL),
       timer_list_(),
       deopt_id_(0),
@@ -297,6 +299,9 @@
   delete api_state_;
   delete stub_code_;
   delete debugger_;
+#if defined(USING_SIMULATOR)
+  delete simulator_;
+#endif

[siva, 2013/01/24 02:03:09]

Is the #if defined(USING_SIMULATOR) necessary here?

[regis, 2013/01/24 21:47:48]

We would need to declare a dummy empty Simulator class for ia32 and x64,
otherwise, without the if-def, we get a warning (=error) that no destructor or
delete operator will be called, even if the forwarded declared class Simulator
is defined (it is not defined).

   delete mutex_;
   mutex_ = NULL;  // Fail fast if interrupts are scheduled on a dead isolate.
   delete message_handler_;