ftl/FTLOSRExit.cpp

   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 #include "config.h"
  27 #include "FTLOSRExit.h"
  28
  29 #if ENABLE(FTL_JIT)
  30
  31 #include "CodeBlock.h"
  32 #include "DFGBasicBlock.h"
  33 #include "DFGNode.h"
  34 #include "FTLExitArgument.h"
  35 #include "FTLExitArgumentList.h"
  36 #include "FTLJITCode.h"
  37 #include "JSCInlines.h"
  38
  39 namespace JSC { namespace FTL {
  40
  41 using namespace DFG;
  42
  43 OSRExit::OSRExit(
  44     ExitKind exitKind, ValueFormat profileValueFormat,
  45     MethodOfGettingAValueProfile valueProfile, CodeOrigin codeOrigin,
  46     CodeOrigin originForProfile, unsigned numberOfArguments,
  47     unsigned numberOfLocals)
  48     : OSRExitBase(exitKind, codeOrigin, originForProfile)
  49     , m_profileValueFormat(profileValueFormat)
  50     , m_valueProfile(valueProfile)
  51     , m_patchableCodeOffset(0)
  52     , m_values(numberOfArguments, numberOfLocals)
  53 {
  54 }
  55
  56 CodeLocationJump OSRExit::codeLocationForRepatch(CodeBlock* ftlCodeBlock) const
  57 {
  58     return CodeLocationJump(
  59         reinterpret_cast<char*>(
  60             ftlCodeBlock->jitCode()->ftl()->exitThunks().dataLocation()) +
  61         m_patchableCodeOffset);
  62 }
  63
  64 } } // namespace JSC::FTL
  65
  66 #endif // ENABLE(FTL_JIT)
  67