ARM native regexps.

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 22 matching lines @@
 // which will start execution in the Simulator or forwards to the real entry
 // on a ARM HW platform.
 
 #ifndef V8_ARM_SIMULATOR_ARM_H_
 #define V8_ARM_SIMULATOR_ARM_H_
 
 #if defined(__arm__)
 
 // When running without a simulator we call the entry directly.
 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \
-  reinterpret_cast<Object*>(entry(p0, p1, p2, p3, p4))
+  (entry(p0, p1, p2, p3, p4))
 
 // Calculated the stack limit beyond which we will throw stack overflow errors.
 // This macro must be called from a C++ method. It relies on being able to take
 // the address of "this" to get a value on the current execution stack and then
 // calculates the stack limit based on that value.
 #define GENERATED_CODE_STACK_LIMIT(limit) \
   (reinterpret_cast<uintptr_t>(this) - limit)
 
+
+// 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)
+
 #else  // defined(__arm__)
 
 // When running with the simulator transition into simulated execution at this
 // point.
 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \
-  assembler::arm::Simulator::current()->Call((int32_t)entry, (int32_t)p0, \
-    (int32_t)p1, (int32_t)p2, (int32_t)p3, (int32_t)p4)
+  reinterpret_cast<Object*>( \
+      assembler::arm::Simulator::current()->Call(FUNCTION_ADDR(entry), 5, \
+                                                 p0, p1, p2, p3, p4))
 
 // The simulator has its own stack. Thus it has a different stack limit from
 // the C-based native code.
 #define GENERATED_CODE_STACK_LIMIT(limit) \
   (assembler::arm::Simulator::current()->StackLimit())
 
 
+#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)
+
 #include "constants-arm.h"
 
 
 namespace assembler {
 namespace arm {
 
 class Simulator {
  public:
   friend class Debugger;
 
@@ skipping 26 matching lines @@
 
   // Accessor to the internal simulator stack area.
   uintptr_t StackLimit() const;
 
   // Executes ARM instructions until the PC reaches end_sim_pc.
   void Execute();
 
   // Call on program start.
   static void Initialize();
 
-  // V8 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.
-  v8::internal::Object* Call(int32_t entry, int32_t p0, int32_t p1,
-                             int32_t p2, int32_t p3, int32_t p4);
+  // V8 generally calls into generated JS code with 5 parameters and into
+  // generated RegExp code with 7 parameters. This is a convenience function,
+  // which sets up the simulator state and grabs the result on return.
+  int32_t Call(byte* entry, int argument_count, ...);
 
  private:
   enum special_values {
     // Known bad pc value to ensure that the simulator does not execute
     // 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.
@@ skipping 40 matching lines @@
   inline void WriteW(int32_t addr, int value, Instr* instr);
 
   // 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);
+  void DecodeUnconditional(Instr* instr);
 
   // Executes one instruction.
   void InstructionDecode(Instr* instr);
 
   // Runtime call support.
   static void* RedirectExternalReference(void* external_function,
                                          bool fp_return);
 
   // For use in calls that take two double values, constructed from r0, r1, r2
   // and r3.
@@ skipping 17 matching lines @@
   // registered breakpoints
   Instr* break_pc_;
   instr_t break_instr_;
 };
 
 } }  // namespace assembler::arm
 
 #endif  // defined(__arm__)
 
 #endif  // V8_ARM_SIMULATOR_ARM_H_