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Diffstat (limited to 'Source/JavaScriptCore/interpreter/JSStack.h')
| -rw-r--r-- | Source/JavaScriptCore/interpreter/JSStack.h | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/Source/JavaScriptCore/interpreter/JSStack.h b/Source/JavaScriptCore/interpreter/JSStack.h deleted file mode 100644 index cb47a9f0b..000000000 --- a/Source/JavaScriptCore/interpreter/JSStack.h +++ /dev/null @@ -1,164 +0,0 @@ -/* - * Copyright (C) 2008, 2009, 2013 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 Computer, 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 JSStack_h -#define JSStack_h - -#include "ExecutableAllocator.h" -#include "Register.h" -#include <wtf/Noncopyable.h> -#include <wtf/PageReservation.h> -#include <wtf/VMTags.h> - -#define ENABLE_DEBUG_JSSTACK 0 -#if !defined(NDEBUG) && !defined(ENABLE_DEBUG_JSSTACK) -#define ENABLE_DEBUG_JSSTACK 1 -#endif - -namespace JSC { - - class CodeBlockSet; - class ConservativeRoots; - class ExecState; - class JITStubRoutineSet; - class VM; - class LLIntOffsetsExtractor; - - struct Instruction; - typedef ExecState CallFrame; - - struct CallerFrameAndPC { - CallFrame* callerFrame; - Instruction* pc; - }; - - class JSStack { - WTF_MAKE_NONCOPYABLE(JSStack); - public: - enum CallFrameHeaderEntry { - CodeBlock = sizeof(CallerFrameAndPC) / sizeof(Register), - ScopeChain, - Callee, - ArgumentCount, - CallFrameHeaderSize, - - // The following entries are not part of the CallFrameHeader but are provided here as a convenience: - ThisArgument = CallFrameHeaderSize, - FirstArgument, - }; - - static const size_t defaultCapacity = 512 * 1024; - // Allow 8k of excess registers before we start trying to reap the stack - static const ptrdiff_t maxExcessCapacity = 8 * 1024; - - JSStack(VM&, size_t capacity = defaultCapacity); - ~JSStack(); - - void gatherConservativeRoots(ConservativeRoots&); - void gatherConservativeRoots(ConservativeRoots&, JITStubRoutineSet&, CodeBlockSet&); - - Register* getBaseOfStack() const - { - return highAddress() - 1; - } - - size_t size() const { return highAddress() - lowAddress(); } - - bool grow(Register*); - - static size_t committedByteCount(); - static void initializeThreading(); - - Register* getTopOfFrame(CallFrame*); - Register* getStartOfFrame(CallFrame*); - Register* getTopOfStack(); - - bool entryCheck(class CodeBlock*, int); - - CallFrame* pushFrame(class CodeBlock*, JSScope*, int argsCount, JSObject* callee); - - void popFrame(CallFrame*); - - bool containsAddress(Register* address) { return (lowAddress() <= address && address <= highAddress()); } - - void enableErrorStackReserve(); - void disableErrorStackReserve(); - -#if ENABLE(DEBUG_JSSTACK) - void installFence(CallFrame*, const char *function = "", int lineNo = 0); - void validateFence(CallFrame*, const char *function = "", int lineNo = 0); - static const int FenceSize = 4; -#else // !ENABLE(DEBUG_JSSTACK) - void installFence(CallFrame*, const char* = "", int = 0) { } - void validateFence(CallFrame*, const char* = "", int = 0) { } -#endif // !ENABLE(DEBUG_JSSTACK) - - private: - Register* lowAddress() const - { - return m_end; - } - - Register* highAddress() const - { - return reinterpret_cast_ptr<Register*>(static_cast<char*>(m_reservation.base()) + m_reservation.size()); - } - - Register* reservationEnd() const - { - char* reservationEnd = static_cast<char*>(m_reservation.base()); - return reinterpret_cast_ptr<Register*>(reservationEnd); - } - -#if ENABLE(DEBUG_JSSTACK) - static JSValue generateFenceValue(size_t argIndex); - void installTrapsAfterFrame(CallFrame*); -#else - void installTrapsAfterFrame(CallFrame*) { } -#endif - - bool growSlowCase(Register*); - void shrink(Register*); - void releaseExcessCapacity(); - void addToCommittedByteCount(long); - - void updateStackLimit(Register* newEnd); - - VM& m_vm; - Register* m_end; - Register* m_commitEnd; - Register* m_useableEnd; - PageReservation m_reservation; - CallFrame*& m_topCallFrame; - - friend class LLIntOffsetsExtractor; - }; - -} // namespace JSC - -#endif // JSStack_h |