Initial SIMDBC interpreter.

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.
@@ skipping 40 matching lines @@
   float get_fregister_float(FRegister freg) const;
   double get_fregister_double(FRegister freg) const;
   int64_t get_fregister_long(FRegister freg) const;
 
   void set_dregister_bits(DRegister freg, int64_t value);
   void set_dregister(DRegister freg, double value);
 
   int64_t get_dregister_bits(DRegister freg) const;
   double get_dregister(DRegister freg) const;
 
+  int32_t get_sp() const {
+    return get_register(SPREG);
+  }
+
   // Accessor for the pc.
   void set_pc(int32_t value) { pc_ = value; }
   int32_t get_pc() const { return pc_; }
 
   // Accessors for hi, lo registers.
   void set_hi_register(int32_t value) { hi_reg_ = value; }
   void set_lo_register(int32_t value) { lo_reg_ = value; }
   int32_t get_hi_register() const { return hi_reg_; }
   int32_t get_lo_register() const { return lo_reg_; }
 
@@ skipping 186 matching lines @@
   }
 
   friend class SimulatorDebugger;
   friend class SimulatorSetjmpBuffer;
   DISALLOW_COPY_AND_ASSIGN(Simulator);
 };
 
 }  // namespace dart
 
 #endif  // VM_SIMULATOR_MIPS_H_