forked from cgvr/DeltaVR
107 lines
2.0 KiB
C#
107 lines
2.0 KiB
C#
//
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// Author:
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// Jb Evain (jbevain@gmail.com)
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//
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// Copyright (c) 2008 - 2015 Jb Evain
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// Copyright (c) 2008 - 2011 Novell, Inc.
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//
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// Licensed under the MIT/X11 license.
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//
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using RVA = System.UInt32;
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namespace MonoFN.Cecil.PE {
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enum TextSegment {
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ImportAddressTable,
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CLIHeader,
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Code,
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Resources,
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Data,
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StrongNameSignature,
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// Metadata
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MetadataHeader,
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TableHeap,
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StringHeap,
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UserStringHeap,
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GuidHeap,
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BlobHeap,
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PdbHeap,
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// End Metadata
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DebugDirectory,
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ImportDirectory,
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ImportHintNameTable,
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StartupStub,
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}
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sealed class TextMap {
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readonly Range [] map = new Range [17 /*Enum.GetValues (typeof (TextSegment)).Length*/];
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public void AddMap (TextSegment segment, int length)
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{
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map [(int)segment] = new Range (GetStart (segment), (uint)length);
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}
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public void AddMap (TextSegment segment, int length, int align)
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{
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align--;
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AddMap (segment, (length + align) & ~align);
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}
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public void AddMap (TextSegment segment, Range range)
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{
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map [(int)segment] = range;
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}
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public Range GetRange (TextSegment segment)
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{
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return map [(int)segment];
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}
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public DataDirectory GetDataDirectory (TextSegment segment)
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{
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var range = map [(int)segment];
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return new DataDirectory (range.Length == 0 ? 0 : range.Start, range.Length);
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}
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public RVA GetRVA (TextSegment segment)
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{
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return map [(int)segment].Start;
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}
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public RVA GetNextRVA (TextSegment segment)
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{
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var i = (int)segment;
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return map [i].Start + map [i].Length;
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}
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public int GetLength (TextSegment segment)
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{
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return (int)map [(int)segment].Length;
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}
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RVA GetStart (TextSegment segment)
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{
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var index = (int)segment;
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return index == 0 ? ImageWriter.text_rva : ComputeStart (index);
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}
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RVA ComputeStart (int index)
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{
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index--;
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return map [index].Start + map [index].Length;
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}
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public uint GetLength ()
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{
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var range = map [(int)TextSegment.StartupStub];
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return range.Start - ImageWriter.text_rva + range.Length;
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}
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}
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}
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