1 files changed, 74 insertions, 0 deletions
diff --git a/Source/WebCore/platform/win/PEImage.cpp b/Source/WebCore/platform/win/PEImage.cpp
new file mode 100644
index 000000000..abea4fbf8
--- /dev/null
+++ b/Source/WebCore/platform/win/PEImage.cpp
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2011 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. 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 INC. 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.
+ */
+
+#include "config.h"
+#include "PEImage.h"
+
+// See <http://msdn.microsoft.com/en-us/magazine/cc301808.aspx> and
+// <http://msdn.microsoft.com/en-us/windows/hardware/gg463119> for more information about the PE
+// image format.
+
+namespace WebCore {
+
+PEImage::PEImage(HMODULE module)
+    : m_module(module)
+    , m_ntHeaders(0)
+{
+    const IMAGE_DOS_HEADER* dosHeader = reinterpret_cast<const IMAGE_DOS_HEADER*>(m_module);
+    if (dosHeader->e_magic != IMAGE_DOS_SIGNATURE)
+        return;
+
+    const IMAGE_NT_HEADERS* ntHeaders = static_cast<const IMAGE_NT_HEADERS*>(convertRVAToAddress(dosHeader->e_lfanew));
+    if (ntHeaders->Signature != IMAGE_NT_SIGNATURE)
+        return;
+
+    if (ntHeaders->OptionalHeader.Magic != IMAGE_NT_OPTIONAL_HDR_MAGIC)
+        return;
+
+    m_ntHeaders = ntHeaders;
+}
+
+const void* PEImage::convertRVAToAddress(DWORD rva) const
+{
+    return reinterpret_cast<unsigned char*>(m_module) + rva;
+}
+
+const void* PEImage::dataDirectoryEntryAddress(DWORD entryIndex) const
+{
+    if (!isValid())
+        return 0;
+
+    if (m_ntHeaders->OptionalHeader.NumberOfRvaAndSizes <= entryIndex)
+        return 0;
+
+    const IMAGE_DATA_DIRECTORY& directory = m_ntHeaders->OptionalHeader.DataDirectory[entryIndex];
+
+    if (!directory.Size)
+        return 0;
+
+    return convertRVAToAddress(directory.VirtualAddress);
+}
+
+} // namespace WebCore