ftl/FTLJITCode.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 FTLJITCode_h
  27 #define FTLJITCode_h
  28
  29 #if ENABLE(FTL_JIT)
  30
  31 #include "DFGCommonData.h"
  32 #include "FTLDataSection.h"
  33 #include "FTLOSRExit.h"
  34 #include "FTLStackMaps.h"
  35 #include "FTLUnwindInfo.h"
  36 #include "JITCode.h"
  37 #include "LLVMAPI.h"
  38 #include <wtf/RefCountedArray.h>
  39
  40 namespace JSC { namespace FTL {
  41
  42 class JITCode : public JSC::JITCode {
  43 public:
  44     JITCode();
  45     ~JITCode();
  46
  47     CodePtr addressForCall(VM&, ExecutableBase*, ArityCheckMode, RegisterPreservationMode) override;
  48     void* executableAddressAtOffset(size_t offset) override;
  49     void* dataAddressAtOffset(size_t offset) override;
  50     unsigned offsetOf(void* pointerIntoCode) override;
  51     size_t size() override;
  52     bool contains(void*) override;
  53
  54     void initializeExitThunks(CodeRef);
  55     void addHandle(PassRefPtr<ExecutableMemoryHandle>);
  56     void addDataSection(PassRefPtr<DataSection>);
  57     void initializeArityCheckEntrypoint(CodeRef);
  58     void initializeAddressForCall(CodePtr);
  59
  60     const Vector<RefPtr<ExecutableMemoryHandle>>& handles() const { return m_handles; }
  61     const Vector<RefPtr<DataSection>>& dataSections() const { return m_dataSections; }
  62
  63     CodePtr exitThunks();
  64
  65     JITCode* ftl();
  66     DFG::CommonData* dfgCommon();
  67
  68     DFG::CommonData common;
  69     SegmentedVector<OSRExit, 8> osrExit;
  70     StackMaps stackmaps;
  71     UnwindInfo unwindInfo;
  72
  73 private:
  74     Vector<RefPtr<DataSection>> m_dataSections;
  75     Vector<RefPtr<ExecutableMemoryHandle>> m_handles;
  76     CodePtr m_addressForCall;
  77     CodeRef m_arityCheckEntrypoint;
  78     CodeRef m_exitThunks;
  79 };
  80
  81 } } // namespace JSC::FTL
  82
  83 #endif // ENABLE(FLT_JIT)
  84
  85 #endif // FTLJITCode_h
  86