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 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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#ifndef CPU_AARCH64_ICACHE_AARCH64_HPP
#define CPU_AARCH64_ICACHE_AARCH64_HPP

// Interface for updating the instruction cache.  Whenever the VM
// modifies code, part of the processor instruction cache potentially
// has to be flushed.

class ICache : public AbstractICache {
 private:
#ifdef _WIN64
  // __builtin___clear_cache is a GCC intrinsic, and is then not available in
  // MSVC. Define an equivalent method which calls the right Win32/MSVC
  // intrinsic.
  static void __builtin___clear_cache(char *start, char *end) {
    FlushInstructionCache((HANDLE)GetCurrentProcess(), start, (SIZE_T)(end - start));
  }
#endif
 public:
  static void initialize();
  static void invalidate_word(address addr) {
    __builtin___clear_cache((char *)addr, (char *)(addr + 3));
  }
  static void invalidate_range(address start, int nbytes) {
    __builtin___clear_cache((char *)start, (char *)(start + nbytes));
  }
};

#endif // CPU_AARCH64_ICACHE_AARCH64_HPP