Implement long jump in ARM and MIPS simulators.

runtime/vm/simulator_mips.h

 // Copyright (c) 2013, 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.
 
 // Declares a Simulator for MIPS instructions if we are not generating a native
 // MIPS binary. This Simulator allows us to run and debug MIPS code generation
 // on regular desktop machines.
 // Dart calls into generated code by "calling" the InvokeDartCode stub,
 // which will start execution in the Simulator or forwards to the real entry
 // on a MIPS HW platform.
 
 #ifndef VM_SIMULATOR_MIPS_H_
 #define VM_SIMULATOR_MIPS_H_
 
 #ifndef VM_SIMULATOR_H_
 #error Do not include simulator_mips.h directly; use simulator.h.
 #endif
 
 #include "vm/constants_mips.h"
+#include "vm/object.h"
 
 namespace dart {
 
 class Isolate;
 class SimulatorSetjmpBuffer;
 
 class Simulator {
  public:
   static const uword kSimulatorStackUnderflowSize = 64;
 
@@ skipping 52 matching lines @@
                int32_t parameter3);
 
   // Runtime and native call support.
   enum CallKind {
     kRuntimeCall,
     kLeafRuntimeCall,
     kNativeCall
   };
   static uword RedirectExternalReference(uword function, CallKind call_kind);
 
+  void Longjmp(uword pc,
+               uword sp,
+               uword fp,
+               RawObject* raw_exception,
+               RawObject* raw_stacktrace);
+
  private:
   // A pc value used to signal the simulator to stop execution.  Generally
   // the ra is set to this value on transition from native C code to
   // simulated execution, so that the simulator can "return" to the native
   // C code.
   static const uword kEndSimulatingPC = -1;
 
   // Special registers for the results of div, divu.
   int32_t hi_reg_;
   int32_t lo_reg_;
@@ skipping 62 matching lines @@
   // Longjmp support for exceptions.
   SimulatorSetjmpBuffer* last_setjmp_buffer() {
     return last_setjmp_buffer_;
   }
   void set_last_setjmp_buffer(SimulatorSetjmpBuffer* buffer) {
     last_setjmp_buffer_ = buffer;
   }
 
   friend class SimulatorDebugger;
   friend class SimulatorSetjmpBuffer;
+  DISALLOW_COPY_AND_ASSIGN(Simulator);
 };
 
 }  // namespace dart
 
 #endif  // VM_SIMULATOR_MIPS_H_