Merge 6168:6800 from bleeding_edge to experimental/gc branch.

src/arm/simulator-arm.h

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 33 matching lines @@
 namespace v8 {
 namespace internal {
 
 // When running without a simulator we call the entry directly.
 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \
   (entry(p0, p1, p2, p3, p4))
 
 // Call the generated regexp code directly. The entry function pointer should
 // expect seven int/pointer sized arguments and return an int.
 #define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6) \
-  (entry(p0, p1, p2, p3, p4, p5, p6))
+  (entry(p0, p1, p2, p3, NULL, p4, p5, p6))
 
 #define TRY_CATCH_FROM_ADDRESS(try_catch_address) \
   (reinterpret_cast<TryCatch*>(try_catch_address))
 
 // The stack limit beyond which we will throw stack overflow errors in
 // generated code. Because generated code on arm uses the C stack, we
 // just use the C stack limit.
 class SimulatorStack : public v8::internal::AllStatic {
  public:
   static inline uintptr_t JsLimitFromCLimit(uintptr_t c_limit) {
     return c_limit;
   }
 
   static inline uintptr_t RegisterCTryCatch(uintptr_t try_catch_address) {
     return try_catch_address;
   }
 
   static inline void UnregisterCTryCatch() { }
 };
 
 } }  // namespace v8::internal
 
 #else  // !defined(USE_SIMULATOR)
 // Running with a simulator.
 
 #include "constants-arm.h"
 #include "hashmap.h"
+#include "assembler.h"
 
-namespace assembler {
-namespace arm {
+namespace v8 {
+namespace internal {
 
 class CachePage {
  public:
   static const int LINE_VALID = 0;
   static const int LINE_INVALID = 1;
 
   static const int kPageShift = 12;
   static const int kPageSize = 1 << kPageShift;
   static const int kPageMask = kPageSize - 1;
   static const int kLineShift = 2;  // The cache line is only 4 bytes right now.
@@ skipping 101 matching lines @@
     // without being properly setup.
     bad_lr = -1,
     // A pc value used to signal the simulator to stop execution.  Generally
     // the lr 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.
     end_sim_pc = -2
   };
 
   // Unsupported instructions use Format to print an error and stop execution.
-  void Format(Instr* instr, const char* format);
+  void Format(Instruction* instr, const char* format);
 
   // Checks if the current instruction should be executed based on its
   // condition bits.
-  bool ConditionallyExecute(Instr* instr);
+  bool ConditionallyExecute(Instruction* instr);
 
   // Helper functions to set the conditional flags in the architecture state.
   void SetNZFlags(int32_t val);
   void SetCFlag(bool val);
   void SetVFlag(bool val);
   bool CarryFrom(int32_t left, int32_t right);
   bool BorrowFrom(int32_t left, int32_t right);
   bool OverflowFrom(int32_t alu_out,
                     int32_t left,
                     int32_t right,
                     bool addition);
 
   // Support for VFP.
   void Compute_FPSCR_Flags(double val1, double val2);
   void Copy_FPSCR_to_APSR();
 
   // Helper functions to decode common "addressing" modes
-  int32_t GetShiftRm(Instr* instr, bool* carry_out);
-  int32_t GetImm(Instr* instr, bool* carry_out);
-  void HandleRList(Instr* instr, bool load);
-  void SoftwareInterrupt(Instr* instr);
+  int32_t GetShiftRm(Instruction* instr, bool* carry_out);
+  int32_t GetImm(Instruction* instr, bool* carry_out);
+  void HandleRList(Instruction* instr, bool load);
+  void SoftwareInterrupt(Instruction* instr);
 
   // Stop helper functions.
-  inline bool isStopInstruction(Instr* instr);
+  inline bool isStopInstruction(Instruction* instr);
   inline bool isWatchedStop(uint32_t bkpt_code);
   inline bool isEnabledStop(uint32_t bkpt_code);
   inline void EnableStop(uint32_t bkpt_code);
   inline void DisableStop(uint32_t bkpt_code);
   inline void IncreaseStopCounter(uint32_t bkpt_code);
   void PrintStopInfo(uint32_t code);
 
   // Read and write memory.
   inline uint8_t ReadBU(int32_t addr);
   inline int8_t ReadB(int32_t addr);
   inline void WriteB(int32_t addr, uint8_t value);
   inline void WriteB(int32_t addr, int8_t value);
 
-  inline uint16_t ReadHU(int32_t addr, Instr* instr);
-  inline int16_t ReadH(int32_t addr, Instr* instr);
+  inline uint16_t ReadHU(int32_t addr, Instruction* instr);
+  inline int16_t ReadH(int32_t addr, Instruction* instr);
   // Note: Overloaded on the sign of the value.
-  inline void WriteH(int32_t addr, uint16_t value, Instr* instr);
-  inline void WriteH(int32_t addr, int16_t value, Instr* instr);
+  inline void WriteH(int32_t addr, uint16_t value, Instruction* instr);
+  inline void WriteH(int32_t addr, int16_t value, Instruction* instr);
 
-  inline int ReadW(int32_t addr, Instr* instr);
-  inline void WriteW(int32_t addr, int value, Instr* instr);
+  inline int ReadW(int32_t addr, Instruction* instr);
+  inline void WriteW(int32_t addr, int value, Instruction* instr);
 
   int32_t* ReadDW(int32_t addr);
   void WriteDW(int32_t addr, int32_t value1, int32_t value2);
 
   // Executing is handled based on the instruction type.
-  void DecodeType01(Instr* instr);  // both type 0 and type 1 rolled into one
-  void DecodeType2(Instr* instr);
-  void DecodeType3(Instr* instr);
-  void DecodeType4(Instr* instr);
-  void DecodeType5(Instr* instr);
-  void DecodeType6(Instr* instr);
-  void DecodeType7(Instr* instr);
+  // Both type 0 and type 1 rolled into one.
+  void DecodeType01(Instruction* instr);
+  void DecodeType2(Instruction* instr);
+  void DecodeType3(Instruction* instr);
+  void DecodeType4(Instruction* instr);
+  void DecodeType5(Instruction* instr);
+  void DecodeType6(Instruction* instr);
+  void DecodeType7(Instruction* instr);
 
   // Support for VFP.
-  void DecodeTypeVFP(Instr* instr);
-  void DecodeType6CoprocessorIns(Instr* instr);
+  void DecodeTypeVFP(Instruction* instr);
+  void DecodeType6CoprocessorIns(Instruction* instr);
 
-  void DecodeVMOVBetweenCoreAndSinglePrecisionRegisters(Instr* instr);
-  void DecodeVCMP(Instr* instr);
-  void DecodeVCVTBetweenDoubleAndSingle(Instr* instr);
-  void DecodeVCVTBetweenFloatingPointAndInteger(Instr* instr);
+  void DecodeVMOVBetweenCoreAndSinglePrecisionRegisters(Instruction* instr);
+  void DecodeVCMP(Instruction* instr);
+  void DecodeVCVTBetweenDoubleAndSingle(Instruction* instr);
+  void DecodeVCVTBetweenFloatingPointAndInteger(Instruction* instr);
 
   // Executes one instruction.
-  void InstructionDecode(Instr* instr);
+  void InstructionDecode(Instruction* instr);
 
   // ICache.
-  static void CheckICache(Instr* instr);
+  static void CheckICache(Instruction* instr);
   static void FlushOnePage(intptr_t start, int size);
   static CachePage* GetCachePage(void* page);
 
   // Runtime call support.
-  static void* RedirectExternalReference(void* external_function,
-                                         bool fp_return);
+  static void* RedirectExternalReference(
+      void* external_function,
+      v8::internal::ExternalReference::Type type);
 
   // For use in calls that take two double values, constructed from r0, r1, r2
   // and r3.
   void GetFpArgs(double* x, double* y);
   void SetFpResult(const double& result);
   void TrashCallerSaveRegisters();
 
   // Architecture state.
   // Saturating instructions require a Q flag to indicate saturation.
   // There is currently no way to read the CPSR directly, and thus read the Q
   // flag, so this is left unimplemented.
   int32_t registers_[16];
   bool n_flag_;
   bool z_flag_;
   bool c_flag_;
   bool v_flag_;
 
   // VFP architecture state.
   unsigned int vfp_register[num_s_registers];
   bool n_flag_FPSCR_;
   bool z_flag_FPSCR_;
   bool c_flag_FPSCR_;
   bool v_flag_FPSCR_;
 
   // VFP rounding mode. See ARM DDI 0406B Page A2-29.
-  FPSCRRoundingModes FPSCR_rounding_mode_;
+  VFPRoundingMode FPSCR_rounding_mode_;
 
   // VFP FP exception flags architecture state.
   bool inv_op_vfp_flag_;
   bool div_zero_vfp_flag_;
   bool overflow_vfp_flag_;
   bool underflow_vfp_flag_;
   bool inexact_vfp_flag_;
 
   // Simulator support.
   char* stack_;
   bool pc_modified_;
   int icount_;
   static bool initialized_;
 
   // Icache simulation
   static v8::internal::HashMap* i_cache_;
 
   // Registered breakpoints.
-  Instr* break_pc_;
-  instr_t break_instr_;
+  Instruction* break_pc_;
+  Instr break_instr_;
 
   // A stop is watched if its code is less than kNumOfWatchedStops.
   // Only watched stops support enabling/disabling and the counter feature.
   static const uint32_t kNumOfWatchedStops = 256;
 
   // Breakpoint is disabled if bit 31 is set.
   static const uint32_t kStopDisabledBit = 1 << 31;
 
   // A stop is enabled, meaning the simulator will stop when meeting the
   // instruction, if bit 31 of watched_stops[code].count is unset.
   // The value watched_stops[code].count & ~(1 << 31) indicates how many times
   // the breakpoint was hit or gone through.
-  struct StopCoundAndDesc {
+  struct StopCountAndDesc {
     uint32_t count;
     char* desc;
   };
-  StopCoundAndDesc watched_stops[kNumOfWatchedStops];
+  StopCountAndDesc watched_stops[kNumOfWatchedStops];
 };
 
-} }  // namespace assembler::arm
-
-
-namespace v8 {
-namespace internal {
 
 // When running with the simulator transition into simulated execution at this
 // point.
 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \
-  reinterpret_cast<Object*>(assembler::arm::Simulator::current()->Call( \
+  reinterpret_cast<Object*>(Simulator::current()->Call( \
       FUNCTION_ADDR(entry), 5, p0, p1, p2, p3, p4))
 
 #define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6) \
-  assembler::arm::Simulator::current()->Call( \
-      FUNCTION_ADDR(entry), 7, p0, p1, p2, p3, p4, p5, p6)
+  Simulator::current()->Call( \
+      FUNCTION_ADDR(entry), 8, p0, p1, p2, p3, NULL, p4, p5, p6)
 
 #define TRY_CATCH_FROM_ADDRESS(try_catch_address) \
   try_catch_address == \
       NULL ? NULL : *(reinterpret_cast<TryCatch**>(try_catch_address))
 
 
 // The simulator has its own stack. Thus it has a different stack limit from
 // the C-based native code.  Setting the c_limit to indicate a very small
 // stack cause stack overflow errors, since the simulator ignores the input.
 // This is unlikely to be an issue in practice, though it might cause testing
 // trouble down the line.
 class SimulatorStack : public v8::internal::AllStatic {
  public:
   static inline uintptr_t JsLimitFromCLimit(uintptr_t c_limit) {
-    return assembler::arm::Simulator::current()->StackLimit();
+    return Simulator::current()->StackLimit();
   }
 
   static inline uintptr_t RegisterCTryCatch(uintptr_t try_catch_address) {
-    assembler::arm::Simulator* sim = assembler::arm::Simulator::current();
+    Simulator* sim = Simulator::current();
     return sim->PushAddress(try_catch_address);
   }
 
   static inline void UnregisterCTryCatch() {
-    assembler::arm::Simulator::current()->PopAddress();
+    Simulator::current()->PopAddress();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // !defined(USE_SIMULATOR)
 #endif  // V8_ARM_SIMULATOR_ARM_H_