[Add] FishNet

2026-03-30 20:11:57 +07:00
parent ee793a3361
commit c22c08753a
1797 changed files with 197950 additions and 1 deletions
@@ -0,0 +1,106 @@
+//
+// Author:
+//   Jb Evain (jbevain@gmail.com)
+//
+// Copyright (c) 2008 - 2015 Jb Evain
+// Copyright (c) 2008 - 2011 Novell, Inc.
+//
+// Licensed under the MIT/X11 license.
+//
+
+using RVA = System.UInt32;
+
+namespace MonoFN.Cecil.PE
+{
+    internal enum TextSegment
+    {
+        ImportAddressTable,
+        CLIHeader,
+        Code,
+        Resources,
+        Data,
+        StrongNameSignature,
+
+        // Metadata
+        MetadataHeader,
+        TableHeap,
+        StringHeap,
+        UserStringHeap,
+        GuidHeap,
+        BlobHeap,
+        PdbHeap,
+        // End Metadata
+        DebugDirectory,
+        ImportDirectory,
+        ImportHintNameTable,
+        StartupStub
+    }
+
+    internal sealed class TextMap
+    {
+        private readonly Range[] map = new Range [17 /*Enum.GetValues (typeof (TextSegment)).Length*/];
+
+        public void AddMap(TextSegment segment, int length)
+        {
+            map[(int)segment] = new(GetStart(segment), (uint)length);
+        }
+
+        public void AddMap(TextSegment segment, int length, int align)
+        {
+            align--;
+
+            AddMap(segment, (length + align) & ~align);
+        }
+
+        public void AddMap(TextSegment segment, Range range)
+        {
+            map[(int)segment] = range;
+        }
+
+        public Range GetRange(TextSegment segment)
+        {
+            return map[(int)segment];
+        }
+
+        public DataDirectory GetDataDirectory(TextSegment segment)
+        {
+            Range range = map[(int)segment];
+
+            return new(range.Length == 0 ? 0 : range.Start, range.Length);
+        }
+
+        public RVA GetRVA(TextSegment segment)
+        {
+            return map[(int)segment].Start;
+        }
+
+        public RVA GetNextRVA(TextSegment segment)
+        {
+            int i = (int)segment;
+            return map[i].Start + map[i].Length;
+        }
+
+        public int GetLength(TextSegment segment)
+        {
+            return (int)map[(int)segment].Length;
+        }
+
+        private RVA GetStart(TextSegment segment)
+        {
+            int index = (int)segment;
+            return index == 0 ? ImageWriter.text_rva : ComputeStart(index);
+        }
+
+        private RVA ComputeStart(int index)
+        {
+            index--;
+            return map[index].Start + map[index].Length;
+        }
+
+        public uint GetLength()
+        {
+            Range range = map[(int)TextSegment.StartupStub];
+            return range.Start - ImageWriter.text_rva + range.Length;
+        }
+    }
+}