Third codegen test passing for simulated MIPS.

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"
 
 namespace dart {
 
+class Isolate;
+class SimulatorSetjmpBuffer;
+
 class Simulator {
  public:
   static const uword kSimulatorStackUnderflowSize = 64;
 
   Simulator();
   ~Simulator();
 
   // The currently executing Simulator instance, which is associated to the
   // current isolate
   static Simulator* Current();
@@ skipping 24 matching lines @@
 
   // Dart generally calls into generated code with 5 parameters. This is a
   // convenience function, which sets up the simulator state and grabs the
   // result on return.
   int64_t Call(int32_t entry,
                int32_t parameter0,
                int32_t parameter1,
                int32_t parameter2,
                int32_t parameter3);
 
+  // Runtime and native call support.
+  enum CallKind {
+    kRuntimeCall,
+    kLeafRuntimeCall,
+    kNativeCall
+  };
+  static uword RedirectExternalReference(uword function, CallKind call_kind);
+
  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_;
 
   int32_t registers_[kNumberOfCpuRegisters];
   double fregisters_[kNumberOfFRegisters];
   uword pc_;
 
   // Simulator support.
   char* stack_;
   int icount_;
   bool delay_slot_;
+  SimulatorSetjmpBuffer* last_setjmp_buffer_;
 
   // Registered breakpoints.
   Instr* break_pc_;
   int32_t break_instr_;
 
   // Illegal memory access support.
   static bool IsIllegalAddress(uword addr) {
     return addr < 64*1024;
   }
   void HandleIllegalAccess(uword addr, Instr* instr);
@@ skipping 17 matching lines @@
   inline uint8_t ReadBU(uword addr);
   inline int16_t ReadH(uword addr, Instr* instr);
   inline uint16_t ReadHU(uword addr, Instr *instr);
   inline int ReadW(uword addr, Instr* instr);
 
   inline void WriteB(uword addr, uint8_t value);
   inline void WriteH(uword addr, uint16_t value, Instr* isntr);
   inline void WriteW(uword addr, int value, Instr* instr);
 
   void DoBranch(Instr* instr, bool taken, bool likely);
+  void DoBreak(Instr *instr);
+
   void DecodeSpecial(Instr* instr);
   void DecodeSpecial2(Instr* instr);
   void DecodeRegImm(Instr* instr);
   void InstructionDecode(Instr* instr);
 
   void Execute();
   void ExecuteDelaySlot();
 
+  // 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;
 };
 
 }  // namespace dart
 
 #endif  // VM_SIMULATOR_MIPS_H_