diff options
Diffstat (limited to 'Ryujinx.Core/Loaders/Executables/Nso.cs')
| -rw-r--r-- | Ryujinx.Core/Loaders/Executables/Nso.cs | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/Ryujinx.Core/Loaders/Executables/Nso.cs b/Ryujinx.Core/Loaders/Executables/Nso.cs new file mode 100644 index 00000000..7b8bf253 --- /dev/null +++ b/Ryujinx.Core/Loaders/Executables/Nso.cs @@ -0,0 +1,122 @@ +using Ryujinx.Core.Loaders.Compression; +using System; +using System.Collections.ObjectModel; +using System.IO; + +namespace Ryujinx.Core.Loaders.Executables +{ + class Nso : IExecutable + { + private byte[] m_Text; + private byte[] m_RO; + private byte[] m_Data; + + public ReadOnlyCollection<byte> Text => Array.AsReadOnly(m_Text); + public ReadOnlyCollection<byte> RO => Array.AsReadOnly(m_RO); + public ReadOnlyCollection<byte> Data => Array.AsReadOnly(m_Data); + + public int Mod0Offset { get; private set; } + public int TextOffset { get; private set; } + public int ROOffset { get; private set; } + public int DataOffset { get; private set; } + public int BssSize { get; private set; } + + [Flags] + private enum NsoFlags + { + IsTextCompressed = 1 << 0, + IsROCompressed = 1 << 1, + IsDataCompressed = 1 << 2, + HasTextHash = 1 << 3, + HasROHash = 1 << 4, + HasDataHash = 1 << 5 + } + + public Nso(Stream Input) + { + BinaryReader Reader = new BinaryReader(Input); + + Input.Seek(0, SeekOrigin.Begin); + + int NsoMagic = Reader.ReadInt32(); + int Version = Reader.ReadInt32(); + int Reserved = Reader.ReadInt32(); + int FlagsMsk = Reader.ReadInt32(); + int TextOffset = Reader.ReadInt32(); + int TextMemOffset = Reader.ReadInt32(); + int TextDecSize = Reader.ReadInt32(); + int ModNameOffset = Reader.ReadInt32(); + int ROOffset = Reader.ReadInt32(); + int ROMemOffset = Reader.ReadInt32(); + int RODecSize = Reader.ReadInt32(); + int ModNameSize = Reader.ReadInt32(); + int DataOffset = Reader.ReadInt32(); + int DataMemOffset = Reader.ReadInt32(); + int DataDecSize = Reader.ReadInt32(); + int BssSize = Reader.ReadInt32(); + + byte[] BuildId = Reader.ReadBytes(0x20); + + int TextSize = Reader.ReadInt32(); + int ROSize = Reader.ReadInt32(); + int DataSize = Reader.ReadInt32(); + + Input.Seek(0x24, SeekOrigin.Current); + + int DynStrOffset = Reader.ReadInt32(); + int DynStrSize = Reader.ReadInt32(); + int DynSymOffset = Reader.ReadInt32(); + int DynSymSize = Reader.ReadInt32(); + + byte[] TextHash = Reader.ReadBytes(0x20); + byte[] ROHash = Reader.ReadBytes(0x20); + byte[] DataHash = Reader.ReadBytes(0x20); + + NsoFlags Flags = (NsoFlags)FlagsMsk; + + this.TextOffset = TextMemOffset; + this.ROOffset = ROMemOffset; + this.DataOffset = DataMemOffset; + this.BssSize = BssSize; + + //Text segment + Input.Seek(TextOffset, SeekOrigin.Begin); + + m_Text = Reader.ReadBytes(TextSize); + + if (Flags.HasFlag(NsoFlags.IsTextCompressed) || true) + { + m_Text = Lz4.Decompress(m_Text, TextDecSize); + } + + //Read-only data segment + Input.Seek(ROOffset, SeekOrigin.Begin); + + m_RO = Reader.ReadBytes(ROSize); + + if (Flags.HasFlag(NsoFlags.IsROCompressed) || true) + { + m_RO = Lz4.Decompress(m_RO, RODecSize); + } + + //Data segment + Input.Seek(DataOffset, SeekOrigin.Begin); + + m_Data = Reader.ReadBytes(DataSize); + + if (Flags.HasFlag(NsoFlags.IsDataCompressed) || true) + { + m_Data = Lz4.Decompress(m_Data, DataDecSize); + } + + using (MemoryStream Text = new MemoryStream(m_Text)) + { + BinaryReader TextReader = new BinaryReader(Text); + + Text.Seek(4, SeekOrigin.Begin); + + Mod0Offset = TextReader.ReadInt32(); + } + } + } +}
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