bytecode/CallLinkInfo.cpp

   1 /*
   2  * Copyright (C) 2012 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 #include "config.h"
  27 #include "CallLinkInfo.h"
  28
  29 #include "DFGOperations.h"
  30 #include "RepatchBuffer.h"
  31
  32 #if ENABLE(JIT)
  33 namespace JSC {
  34
  35 void CallLinkInfo::unlink(JSGlobalData& globalData, RepatchBuffer& repatchBuffer)
  36 {
  37     ASSERT(isLinked());
  38
  39     if (isDFG) {
  40 #if ENABLE(DFG_JIT)
  41         repatchBuffer.relink(CodeLocationCall(callReturnLocation), callType == Construct ? DFG::operationLinkConstruct : DFG::operationLinkCall);
  42 #else
  43         ASSERT_NOT_REACHED();
  44 #endif
  45     } else
  46         repatchBuffer.relink(CodeLocationNearCall(callReturnLocation), callType == Construct ? globalData.jitStubs->ctiVirtualConstructLink() : globalData.jitStubs->ctiVirtualCallLink());
  47     hasSeenShouldRepatch = false;
  48     callee.clear();
  49
  50     // It will be on a list if the callee has a code block.
  51     if (isOnList())
  52         remove();
  53 }
  54
  55 } // namespace JSC
  56 #endif // ENABLE(JIT)
  57