81 lines
2.7 KiB
C#
81 lines
2.7 KiB
C#
/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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This file is part of dnSpy
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dnSpy is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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dnSpy is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Diagnostics;
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using System.IO;
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using dnlib.PE;
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using dnSpy.Contracts.Debugger;
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namespace dnSpy.Debugger.DotNet.Mono.Impl {
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static class PortableExecutableHelper {
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public static bool TryGetSizeOfImage(DbgProcess process, ulong address, bool isFileLayout, out uint imageSize) {
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imageSize = 0;
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try {
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var buffer = new byte[0x2000];
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process.ReadMemory(address, buffer, 0, buffer.Length);
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if (BitConverter.ToUInt16(buffer, 0) != 0x5A4D)
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return false;
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using (var peImage = new PEImage(buffer, null, isFileLayout ? ImageLayout.File : ImageLayout.Memory, verify: true)) {
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ulong length = GetImageSize(peImage);
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Debug.Assert(length <= uint.MaxValue);
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if (length > uint.MaxValue)
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return false;
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imageSize = (uint)length;
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return true;
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}
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}
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catch (BadImageFormatException) {
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return false;
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}
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catch (IOException) {
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return false;
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}
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catch (Exception ex) {
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Debug.Fail(ex.ToString());
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return false;
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}
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}
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static ulong AlignUp(ulong val, uint alignment) => (val + alignment - 1) & ~(ulong)(alignment - 1);
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static ulong GetImageSize(IPEImage peImage) {
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var optHdr = peImage.ImageNTHeaders.OptionalHeader;
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uint alignment = peImage.IsFileImageLayout ? optHdr.FileAlignment : optHdr.SectionAlignment;
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ulong len = AlignUp(optHdr.SizeOfHeaders, alignment);
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foreach (var section in peImage.ImageSectionHeaders) {
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ulong len2 = peImage.IsFileImageLayout ?
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AlignUp((ulong)section.PointerToRawData + section.SizeOfRawData, alignment) :
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AlignUp((ulong)section.VirtualAddress + Math.Max(section.VirtualSize, section.SizeOfRawData), alignment);
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if (len2 > len)
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len = len2;
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}
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return len;
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}
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public static bool TryGetModuleAddressAndSize(DbgProcess process, string moduleFilename, out ulong imageAddr, out uint imageSize) {
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//TODO: mono maps the files as data, use Win32 funcs to find all mapped files
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imageAddr = 0;
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imageSize = 0;
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return false;
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}
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}
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}
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