jit/ArityCheckFailReturnThunks.h

   1 /*
   2  * Copyright (C) 2013 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef ArityCheckFailReturnThunks_h
  27 #define ArityCheckFailReturnThunks_h
  28
  29 #if ENABLE(JIT)
  30
  31 #include "CodeLocation.h"
  32 #include "ConcurrentJITLock.h"
  33 #include <wtf/HashMap.h>
  34
  35 namespace JSC {
  36
  37 class ArityCheckFailReturnThunks {
  38 public:
  39     ArityCheckFailReturnThunks();
  40     ~ArityCheckFailReturnThunks();
  41
  42     // Returns a pointer to an array of return labels indexed by missingArgs.
  43     CodeLocationLabel* returnPCsFor(VM&, unsigned numExpectedArgumentsIncludingThis);
  44
  45     CodeLocationLabel returnPCFor(VM&, unsigned slotsToAdd);
  46
  47 private:
  48     Vector<std::unique_ptr<CodeLocationLabel[]>> m_returnPCArrays;
  49     unsigned m_nextSize;
  50     Vector<MacroAssemblerCodeRef> m_refs;
  51     ConcurrentJITLock m_lock;
  52 };
  53
  54 } // namespace JSC
  55
  56 #endif // ENABLE(JIT)
  57
  58 #endif // ArityCheckFailReturnThunks_h
  59