/* * Copyright (C) 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. * * 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. */ #include "config.h" #include "FTLJITCode.h" #if ENABLE(FTL_JIT) namespace JSC { namespace FTL { JITCode::JITCode() : JSC::JITCode(FTLJIT) { } JITCode::~JITCode() { } void JITCode::initializeExitThunks(CodeRef exitThunks) { m_exitThunks = exitThunks; } void JITCode::addHandle(PassRefPtr<ExecutableMemoryHandle> handle) { m_handles.append(handle); } void JITCode::addDataSection(PassRefPtr<DataSection> dataSection) { m_dataSections.append(dataSection); } void JITCode::initializeArityCheckEntrypoint(CodeRef entrypoint) { m_arityCheckEntrypoint = entrypoint; } void JITCode::initializeAddressForCall(CodePtr address) { m_addressForCall = address; } JITCode::CodePtr JITCode::addressForCall(VM&, ExecutableBase*, ArityCheckMode arityCheck, RegisterPreservationMode) { switch (arityCheck) { case ArityCheckNotRequired: return m_addressForCall; case MustCheckArity: return m_arityCheckEntrypoint.code(); } RELEASE_ASSERT_NOT_REACHED(); return CodePtr(); } void* JITCode::executableAddressAtOffset(size_t offset) { return reinterpret_cast<char*>(m_addressForCall.executableAddress()) + offset; } void* JITCode::dataAddressAtOffset(size_t) { // We can't patch FTL code, yet. Even if we did, it's not clear that we would do so // through this API. RELEASE_ASSERT_NOT_REACHED(); return 0; } unsigned JITCode::offsetOf(void*) { // We currently don't have visibility into the FTL code. RELEASE_ASSERT_NOT_REACHED(); return 0; } size_t JITCode::size() { // We don't know the size of FTL code, yet. Make a wild guess. This is mostly used for // GC load estimates. return 1000; } bool JITCode::contains(void*) { // We have no idea what addresses the FTL code contains, yet. RELEASE_ASSERT_NOT_REACHED(); return false; } JITCode::CodePtr JITCode::exitThunks() { return m_exitThunks.code(); } JITCode* JITCode::ftl() { return this; } DFG::CommonData* JITCode::dfgCommon() { return &common; } } } // namespace JSC::FTL #endif // ENABLE(FTL_JIT)