/* * Copyright (C) 2020 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. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR * 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. */ #pragma once #include "Options.h" #include <wtf/HashMap.h> #include <wtf/NeverDestroyed.h> #include <wtf/PtrTag.h> namespace JSC { class JITOperationList { public: static JITOperationList& instance(); static void initialize(); void* map(void* pointer) const { #if ENABLE(JIT_OPERATION_VALIDATION) return m_validatedOperations.get(removeCodePtrTag(pointer)); #else return pointer; #endif } static void populatePointersInJavaScriptCore(); static void populatePointersInJavaScriptCoreForLLInt(); JS_EXPORT_PRIVATE static void populatePointersInEmbedder(const uintptr_t* beginOperations, const uintptr_t* endOperations); template<typename T> static void assertIsJITOperation(T function) { UNUSED_PARAM(function); #if ENABLE(JIT_OPERATION_VALIDATION) ASSERT(!Options::useJIT() || JITOperationList::instance().map(bitwise_cast<void*>(function))); #endif } private: HashMap<void*, void*> m_validatedOperations; }; JS_EXPORT_PRIVATE extern LazyNeverDestroyed<JITOperationList> jitOperationList; inline JITOperationList& JITOperationList::instance() { return jitOperationList.get(); } } // namespace JSC