private static int DecompressSection(NsoReader reader, NsoReader.SegmentType segmentType, int offset, byte[] Program)
{
reader.GetSegmentSize(segmentType, out uint uncompressedSize).ThrowIfFailure();
var span = Program.AsSpan().Slice(offset, (int)uncompressedSize);
reader.ReadSegment(segmentType, span).ThrowIfFailure();
return((int)uncompressedSize);
}
private static byte[] DecompressSection(NsoReader reader, NsoReader.SegmentType segmentType)
{
reader.GetSegmentSize(segmentType, out uint uncompressedSize).ThrowIfFailure();
byte[] result = new byte[uncompressedSize];
reader.ReadSegment(segmentType, result).ThrowIfFailure();
return(result);
}
private uint DecompressSection(NsoReader reader, NsoReader.SegmentType segmentType, uint offset)
{
reader.GetSegmentSize(segmentType, out uint uncompressedSize).ThrowIfFailure();
var span = Program.AsSpan((int)offset, (int)uncompressedSize);
reader.ReadSegment(segmentType, span).ThrowIfFailure();
return(uncompressedSize);
}
public NsoExecutable(IStorage inStorage, string name = null)
{
NsoReader reader = new NsoReader();
reader.Initialize(inStorage.AsFile(OpenMode.Read)).ThrowIfFailure();
TextOffset = (int)reader.Header.Segments[0].MemoryOffset;
RoOffset = (int)reader.Header.Segments[1].MemoryOffset;
DataOffset = (int)reader.Header.Segments[2].MemoryOffset;
BssSize = (int)reader.Header.BssSize;
reader.GetSegmentSize(NsoReader.SegmentType.Data, out uint uncompressedSize).ThrowIfFailure();
Program = new byte[DataOffset + uncompressedSize];
TextSize = DecompressSection(reader, NsoReader.SegmentType.Text, TextOffset, Program);
RoSize = DecompressSection(reader, NsoReader.SegmentType.Ro, RoOffset, Program);
DataSize = DecompressSection(reader, NsoReader.SegmentType.Data, DataOffset, Program);
Name = name;
BuildId = reader.Header.ModuleId;
}