1/* 2 * Copyright (C) 2011 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. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "ImportedFunctionsEnumerator.h" 28 29// See <http://msdn.microsoft.com/en-us/magazine/cc301808.aspx> and 30// <http://msdn.microsoft.com/en-us/windows/hardware/gg463119> for more information about the PE 31// image format. 32 33namespace WebCore { 34 35ImportedFunctionsEnumerator::ImportedFunctionsEnumerator(const PEImage& image, const IMAGE_THUNK_DATA* importNameTable, const IMAGE_THUNK_DATA* importAddressTable) 36 : m_image(image) 37 , m_nameTableEntry(importNameTable) 38 , m_addressTableEntry(importAddressTable) 39{ 40 ASSERT(!importNameTable == !importAddressTable); 41} 42 43bool ImportedFunctionsEnumerator::isAtEnd() const 44{ 45 ASSERT(!m_nameTableEntry || !m_nameTableEntry->u1.AddressOfData == !m_addressTableEntry->u1.Function); 46 return !m_nameTableEntry || !m_nameTableEntry->u1.AddressOfData; 47} 48 49void ImportedFunctionsEnumerator::next() 50{ 51 ASSERT(!isAtEnd()); 52 ++m_nameTableEntry; 53 ++m_addressTableEntry; 54} 55 56const char* ImportedFunctionsEnumerator::currentFunctionName() const 57{ 58 ASSERT(m_nameTableEntry); 59 60 // Ordinal imports have no name. 61 if (IMAGE_SNAP_BY_ORDINAL(m_nameTableEntry->u1.Ordinal)) 62 return 0; 63 64 const IMAGE_IMPORT_BY_NAME* importByName = static_cast<const IMAGE_IMPORT_BY_NAME*>(m_image.convertRVAToAddress(m_nameTableEntry->u1.AddressOfData)); 65 return reinterpret_cast<const char*>(importByName->Name); 66} 67 68const void* const* ImportedFunctionsEnumerator::addressOfCurrentFunctionPointer() const 69{ 70 ASSERT(m_addressTableEntry); 71 COMPILE_ASSERT(sizeof(void*) == sizeof(m_addressTableEntry->u1.Function), FunctionAddressSizeMatchesPointerSize); 72 return reinterpret_cast<const void* const*>(&m_addressTableEntry->u1.Function); 73} 74 75} // namespace WebCore 76