// Copyright 2011 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
//       with the distribution.
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//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef V8_X64_SIMULATOR_X64_H_
#define V8_X64_SIMULATOR_X64_H_

#include "allocation.h"

namespace v8 {
namespace internal {

// Since there is no simulator for the x64 architecture the only thing we can
// do is to call the entry directly.
// TODO(X64): Don't pass p0, since it isn't used?
#define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \
  (entry(p0, p1, p2, p3, p4))

typedef int (*regexp_matcher)(String*, int, const byte*,
                              const byte*, int*, Address, int, Isolate*);

// Call the generated regexp code directly. The code at the entry address should
// expect eight int/pointer sized arguments and return an int.
#define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6, p7) \
  (FUNCTION_CAST<regexp_matcher>(entry)(p0, p1, p2, p3, p4, p5, p6, p7))

#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 x64 uses the C stack, we
// just use the C stack limit.
class SimulatorStack : public v8::internal::AllStatic {
 public:
  static inline uintptr_t JsLimitFromCLimit(Isolate* isolate,
                                            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

#endif  // V8_X64_SIMULATOR_X64_H_