webkitgtk-2.10.2webkitgtk-2.10.2

1 files changed, 143 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/bytecode/Instruction.h b/Source/JavaScriptCore/bytecode/Instruction.h
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+++ b/Source/JavaScriptCore/bytecode/Instruction.h
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+/*
+ * Copyright (C) 2008, 2012-2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef Instruction_h
+#define Instruction_h
+
+#include "BasicBlockLocation.h"
+#include "MacroAssembler.h"
+#include "Opcode.h"
+#include "SymbolTable.h"
+#include "TypeLocation.h"
+#include "PropertySlot.h"
+#include "SpecialPointer.h"
+#include "Structure.h"
+#include "StructureChain.h"
+#include "ToThisStatus.h"
+#include "VirtualRegister.h"
+#include <wtf/VectorTraits.h>
+
+namespace JSC {
+
+class ArrayAllocationProfile;
+class ArrayProfile;
+class ObjectAllocationProfile;
+class WatchpointSet;
+struct LLIntCallLinkInfo;
+struct ValueProfile;
+
+struct Instruction {
+    Instruction()
+    {
+        u.jsCell.clear();
+    }
+        
+    Instruction(Opcode opcode)
+    {
+#if !ENABLE(COMPUTED_GOTO_OPCODES)
+        // We have to initialize one of the pointer members to ensure that
+        // the entire struct is initialized, when opcode is not a pointer.
+        u.jsCell.clear();
+#endif
+        u.opcode = opcode;
+    }
+
+    Instruction(int operand)
+    {
+        // We have to initialize one of the pointer members to ensure that
+        // the entire struct is initialized in 64-bit.
+        u.jsCell.clear();
+        u.operand = operand;
+    }
+
+    Instruction(VM& vm, JSCell* owner, Structure* structure)
+    {
+        u.structure.clear();
+        u.structure.set(vm, owner, structure);
+    }
+    Instruction(VM& vm, JSCell* owner, StructureChain* structureChain)
+    {
+        u.structureChain.clear();
+        u.structureChain.set(vm, owner, structureChain);
+    }
+    Instruction(VM& vm, JSCell* owner, JSCell* jsCell)
+    {
+        u.jsCell.clear();
+        u.jsCell.set(vm, owner, jsCell);
+    }
+
+    Instruction(PropertySlot::GetValueFunc getterFunc) { u.getterFunc = getterFunc; }
+        
+    Instruction(LLIntCallLinkInfo* callLinkInfo) { u.callLinkInfo = callLinkInfo; }
+    Instruction(ValueProfile* profile) { u.profile = profile; }
+    Instruction(ArrayProfile* profile) { u.arrayProfile = profile; }
+    Instruction(ArrayAllocationProfile* profile) { u.arrayAllocationProfile = profile; }
+    Instruction(ObjectAllocationProfile* profile) { u.objectAllocationProfile = profile; }
+    Instruction(WriteBarrier<Unknown>* variablePointer) { u.variablePointer = variablePointer; }
+    Instruction(Special::Pointer pointer) { u.specialPointer = pointer; }
+    Instruction(UniquedStringImpl* uid) { u.uid = uid; }
+    Instruction(bool* predicatePointer) { u.predicatePointer = predicatePointer; }
+
+    union {
+        Opcode opcode;
+        int operand;
+        WriteBarrierBase<Structure> structure;
+        WriteBarrierBase<SymbolTable> symbolTable;
+        WriteBarrierBase<StructureChain> structureChain;
+        WriteBarrierBase<JSCell> jsCell;
+        WriteBarrier<Unknown>* variablePointer;
+        Special::Pointer specialPointer;
+        PropertySlot::GetValueFunc getterFunc;
+        LLIntCallLinkInfo* callLinkInfo;
+        UniquedStringImpl* uid;
+        ValueProfile* profile;
+        ArrayProfile* arrayProfile;
+        ArrayAllocationProfile* arrayAllocationProfile;
+        ObjectAllocationProfile* objectAllocationProfile;
+        WatchpointSet* watchpointSet;
+        void* pointer;
+        bool* predicatePointer;
+        ToThisStatus toThisStatus;
+        TypeLocation* location;
+        BasicBlockLocation* basicBlockLocation;
+    } u;
+        
+private:
+    Instruction(StructureChain*);
+    Instruction(Structure*);
+};
+
+} // namespace JSC
+
+namespace WTF {
+
+template<> struct VectorTraits<JSC::Instruction> : VectorTraitsBase<true, JSC::Instruction> { };
+
+} // namespace WTF
+
+#endif // Instruction_h