public override void Read(DataStream strIn)
{
DataReader reader = new DataReader(strIn, EndiannessMode.LittleEndian, Encoding.GetEncoding("shift_jis"));
uint numBlocks = reader.ReadUInt32();
this.entries = new Entry[numBlocks];
for (int i = 0; i < numBlocks; i++) {
uint idx = reader.ReadUInt32();
int textSize = reader.ReadInt32();
string text = reader.ReadString(textSize);
this.entries[i] = new Entry(idx, text.ApplyTable("replace", false));
}
}
public override void Read(DataStream strIn)
{
DataReader reader = new DataReader(strIn, EndiannessMode.LittleEndian, Encoding.GetEncoding("shift_jis"));
this.id = reader.ReadUInt32();
this.startBlocks = new string[4];
for (int i = 0; i < this.startBlocks.Length; i++) {
ushort textSize = reader.ReadUInt16();
this.startBlocks[i] = reader.ReadString(textSize).ApplyTable("replace", false);
}
this.unknown = reader.ReadBytes(0x0D);
byte numEndBlocks = reader.ReadByte();
this.endBlocks = new string[numEndBlocks];
for (int i = 0; i < this.endBlocks.Length; i++) {
ushort size = reader.ReadUInt16();
this.endBlocks[i] = reader.ReadString(size).ApplyTable("replace", false);
}
byte numUnknown = reader.ReadByte();
this.unknown2 = new byte[numUnknown][];
for (int i = 0; i < this.unknown2.Length; i++) {
byte dataSize = reader.ReadByte();
this.unknown2[i] = reader.ReadBytes(dataSize + 4);
}
}
public override void Read(DataStream strIn)
{
DataReader reader = new DataReader(strIn);
this.type = reader.ReadUInt32();
this.blocks = new Block[3];
this.blocks[0] = Block.FromStream(strIn, typeof(Entry1));
this.blocks[1] = Block.FromStream(strIn, typeof(Entry2));
this.blocks[2] = Block.FromStream(strIn, typeof(Entry3));
}
public override void Read(DataStream strIn)
{
DataReader reader = new DataReader(strIn, EndiannessMode.LittleEndian, Encoding.GetEncoding("shift_jis"));
ushort numEntries = reader.ReadUInt16();
this.entries = new Entry[numEntries];
for (int i = 0; i < numEntries; i++) {
this.entries[i] = new Entry();
this.entries[i].Id = reader.ReadUInt32();
this.entries[i].Text = reader.ReadString(typeof(ushort), "replace", false);
}
}
public override void Read(DataStream strIn)
{
DataReader reader = new DataReader(strIn, EndiannessMode.LittleEndian, Encoding.GetEncoding("shift_jis"));
ushort numBlocks = reader.ReadUInt16();
this.blocks = new Block[numBlocks];
for (int i = 0; i < numBlocks; i++) {
reader.ReadUInt16(); // Block size
this.blocks[i] = new Block();
this.blocks[i].Id = reader.ReadUInt32();
this.blocks[i].Elements = new string[3];
for (int j = 0; j < 3; j++)
this.blocks[i].Elements[j] = reader.ReadString(typeof(ushort), "replace", false);
reader.ReadByte(); // 0x00
}
}
/// <summary>
/// Read a Fat section from a stream.
/// </summary>
/// <param name="str">Stream to read from.</param>
public override void Read(DataStream str)
{
this.files = new GameFile[str.Length / FatEntrySize];
DataReader dr = new DataReader(str);
uint startOffset, endOffset;
for (ushort i = 0; i < this.files.Length; i++) {
startOffset = dr.ReadUInt32();
endOffset = dr.ReadUInt32();
this.files[i] = new GameFile(
string.Empty, // Name will be added later in FNT
new DataStream(str.BaseStream, startOffset, endOffset - startOffset)); // TODO: FIX
this.files[i].Tags["Id"] = i;
}
if (this.files.Length > 0) {
if (this.files[0].Stream.Offset > str.Position - this.Size)
this.firstOffset = (uint)(this.files[0].Stream.Offset - (str.Position - this.Size));
else
this.firstOffset = (uint)((str.Position - this.Size) - this.files[0].Stream.Offset);
} else {
this.firstOffset = 0xFFFFFFFF;
}
}
/// <summary>
/// Read a the header from a NDS game ROM.
/// </summary>
/// <param name="str">Stream with the ROM. Must be at the correct position.</param>
public override void Read(DataStream str)
{
long startPosition = str.Position;
DataReader dr = new DataReader(str);
this.gameTitle = dr.ReadChars(12);
this.gameCode = dr.ReadChars(4);
this.makerCode = dr.ReadChars(2);
this.unitCode = dr.ReadByte();
this.encryptionSeed = dr.ReadByte();
this.cartridgeSize = (uint)(1 << (MinCartridge + dr.ReadByte()));
this.reserved = dr.ReadBytes(9);
this.RomVersion = dr.ReadByte();
this.internalFlags = dr.ReadByte();
this.Arm9Offset = dr.ReadUInt32();
this.Arm9EntryAddress = dr.ReadUInt32();
this.Arm9RamAddress = dr.ReadUInt32();
this.Arm9Size = dr.ReadUInt32();
this.Arm7Offset = dr.ReadUInt32();
this.Arm7EntryAddress = dr.ReadUInt32();
this.Arm7RamAddress = dr.ReadUInt32();
this.Arm7Size = dr.ReadUInt32();
this.fntOffset = dr.ReadUInt32();
this.fntSize = dr.ReadUInt32();
this.FatOffset = dr.ReadUInt32();
this.FatSize = dr.ReadUInt32();
this.Ov9TableOffset = dr.ReadUInt32();
this.Ov9TableSize = dr.ReadUInt32();
this.Ov7TableOffset = dr.ReadUInt32();
this.Ov7TableSize = dr.ReadUInt32();
this.flagsRead = dr.ReadUInt32();
this.flagsInit = dr.ReadUInt32();
this.bannerOffset = dr.ReadUInt32();
this.secureCRC16 = dr.ReadUInt16();
this.RomTimeout = dr.ReadUInt16();
this.Arm9Autoload = dr.ReadUInt32();
this.Arm7Autoload = dr.ReadUInt32();
this.secureDisable = dr.ReadUInt64();
this.RomSize = dr.ReadUInt32();
this.headerSize = dr.ReadUInt32();
this.reserved2 = dr.ReadBytes(56);
this.nintendoLogo = dr.ReadBytes(156);
this.logoCRC16 = dr.ReadUInt16();
this.headerCRC16 = dr.ReadUInt16();
this.debugRomOffset = dr.ReadUInt32();
this.debugSize = dr.ReadUInt32();
this.debugRamAddress = dr.ReadUInt32();
this.reserved3 = dr.ReadUInt32();
int unknownSize = (int)(this.headerSize - (str.Position - startPosition));
this.unknown = dr.ReadBytes(unknownSize);
}
/// <summary>
/// Searchs the encoded size address.
/// </summary>
/// <returns>The encoded size address. 0 if not found. 1 if game is homebrew.</returns>
private uint SearchEncodedSizeAddress()
{
/*
* Steps to find the ARM9 size address that we need to change
* in order to fix the BLZ decoded error.
*
* 0º Check the game is not homebrew.
* 1º Get ARM9 entry address.
* 2º From that point and while we're in the secure zone,
* search the decode_BLZ routine.
* 3º Search previous BL (jump) instruction that call the decoder.
* 4º Search instructions before it that loads R0 (parameter of decode_BLZ).
*/
DataReader reader = new DataReader(this.Stream);
// 0º
if (this.Tags.ContainsKey("_GameCode_") && (string)this.Tags["_GameCode_"] == "####")
return 0x01;
// 1º
uint entryAddress = this.EntryAddress - this.RamAddress;
// 2º
this.Stream.Seek(entryAddress, SeekMode.Origin);
uint decoderAddress = SearchDecoder();
if (decoderAddress == 0x00) {
Console.WriteLine("INVALID decoder address.");
return 0x00;
}
// 3º & 4º
this.Stream.Seek(entryAddress, SeekMode.Origin);
uint baseOffset = SearchBaseOffset(decoderAddress);
if (baseOffset == 0x00) {
Console.WriteLine("INVALID base offset.");
return 0x00;
}
// Get relative address (not RAM address)
this.Stream.Seek(baseOffset, SeekMode.Origin);
uint sizeAddress = reader.ReadUInt32() + 0x14; // Size is at 0x14 from that address
sizeAddress -= this.RamAddress;
return sizeAddress;
}
private uint SearchDecoder()
{
DataReader reader = new DataReader(this.Stream);
long startPosition = this.Stream.Position;
uint decoderAddress = 0x00;
while (this.Stream.Position - startPosition < SecureAreaSize && decoderAddress == 0x00)
{
long loopPosition = this.Stream.RelativePosition;
// Compare instructions to see if it's the routing we want
bool found = true;
for (int i = 0; i < DecoderOps.Length && found; i++) {
if (reader.ReadUInt32() != DecoderOps[i]) {
found = false;
}
}
if (found)
decoderAddress = (uint)loopPosition - DecoderShift; // Get start of routine
else
this.Stream.Seek(loopPosition + 4, SeekMode.Origin); // Go to next instruction
}
return decoderAddress;
}
private uint SearchBaseOffset(uint decoderAddress)
{
DataReader reader = new DataReader(this.Stream);
uint instr;
// Search the instruction: BL DecoderAddress
// Where DecoderAddress=(PC+8+nn*4)
bool found = false;
while (this.Stream.RelativePosition < decoderAddress && !found)
{
instr = reader.ReadUInt32();
if ((instr & 0xFF000000) == 0xEB000000) {
uint shift = instr & 0x00FFFFFF;
shift = 4 + shift * 4;
// Check if that jump goes to the correct routine
if (this.Stream.RelativePosition + shift == decoderAddress)
found = true;
}
}
// Search for the Load instruction, btw LDR R1=[PC+ZZ].
// Usually two instruction before.
this.Stream.Seek(-0x0C, SeekMode.Current);
uint baseOffset = 0x00;
instr = reader.ReadUInt32();
if ((instr & 0xFFFF0000) == 0xE59F0000)
baseOffset = (uint)this.Stream.RelativePosition + (instr & 0xFFF) + 4;
// If not found... Should we continue looking above instructions?
// I run a test with > 500 games and at the moment it is always there
return baseOffset;
}
public virtual void Read(DataStream stream)
{
DataReader reader = new DataReader(stream);
this.Id = reader.ReadUInt32();
}
public static Block FromStream(DataStream stream, Type entryType)
{
Block b = new Block();
DataReader reader = new DataReader(stream);
reader.ReadUInt32(); // Block size
b.Entries = new List<Entry>();
while (true) {
uint id = reader.ReadUInt32();
if (id == 0xFFFFFFFF)
break;
else
stream.Seek(-0x04, SeekMode.Current);
Entry entry = (Entry)Activator.CreateInstance(entryType);
entry.Read(stream);
b.Entries.Add(entry);
}
return b;
}
/// <summary>
/// Read a FNT section from a stream.
/// </summary>
/// <param name="str">Stream to read from.</param>
public override void Read(DataStream str)
{
DataReader dr = new DataReader(str);
uint fntOffset = (uint)str.Position;
// Get the number of directories and the offset to subtables
// from the main table.
uint subtablesOffset = dr.ReadUInt32() + fntOffset;
dr.ReadUInt16();
ushort numDirs = dr.ReadUInt16();
this.tables = new Fnt.FntTable[numDirs];
for (int i = 0; i < numDirs; i++) {
str.Seek(fntOffset + (i * FntEntrySize), SeekMode.Origin);
// Error, in some cases the number of directories is wrong.
// Found in FF Four Heroes of Light, Tetris Party deluxe.
if (str.Position > subtablesOffset) {
numDirs = (ushort)i;
Array.Resize(ref this.tables, numDirs);
break;
}
FntTable table = new FntTable(
dr.ReadUInt32(), // Offset
dr.ReadUInt16(), // Id First File
dr.ReadUInt16()); // Id Parent Folder
// Read subtable
str.Seek(fntOffset + table.Offset, SeekMode.Origin);
table.Read(str);
this.tables[i] = table;
}
}
/// <summary>
/// Create a new overlay file from the info in the overlay table.
/// </summary>
/// <param name="str">Stream to read the table.</param>
/// <param name="listFiles">List of files where the overlay must be.</param>
/// <returns>Overlay file.</returns>
public static OverlayFile FromTable(DataStream str, bool isArm9, GameFile[] listFiles)
{
DataReader dr = new DataReader(str);
str.Seek(0x18, SeekMode.Current);
uint fileId = dr.ReadUInt32();
str.Seek(-0x1C, SeekMode.Current);
OverlayFile overlay = new OverlayFile(listFiles[fileId], isArm9);
overlay.OverlayId = dr.ReadUInt32();
overlay.RamAddress = dr.ReadUInt32();
overlay.RamSize = dr.ReadUInt32();
overlay.BssSize = dr.ReadUInt32();
overlay.StaticInitStart = dr.ReadUInt32();
overlay.StaticInitEnd = dr.ReadUInt32();
dr.ReadUInt32(); // File ID again
uint encodingInfo = dr.ReadUInt32();
overlay.EncodedSize = encodingInfo & 0x00FFFFFF;
overlay.IsEncoded = ((encodingInfo >> 24) & 0x01) == 1;
overlay.IsSigned = ((encodingInfo >> 24) & 0x02) == 2;
return overlay;
}
