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Patch main executables.

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Admiral H. Curtiss
2014-05-29 21:44:17 +02:00
parent bb7e14a877
commit 0c19ba3b24
1 changed files with 67 additions and 0 deletions
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67
Program.cs
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@@ -27,6 +27,21 @@ namespace WfcPatcher {
// http://dsibrew.org/wiki/DSi_Cartridge_Header
// arm
Console.WriteLine( "Patching ARM Executables..." );
nds.Position = 0x20;
uint arm9offset = nds.ReadUInt32();
uint arm9entry = nds.ReadUInt32();
uint arm9load = nds.ReadUInt32();
uint arm9size = nds.ReadUInt32();
uint arm7offset = nds.ReadUInt32();
uint arm7entry = nds.ReadUInt32();
uint arm7load = nds.ReadUInt32();
uint arm7size = nds.ReadUInt32();
PatchArm9( nds, arm9offset, arm9size );
PatchArm7( nds, arm7offset, arm7size );
// overlays
Console.WriteLine( "Patching Overlays..." );
nds.Position = 0x50;
@@ -43,6 +58,58 @@ namespace WfcPatcher {
nds.Close();
}
static void PatchArm9( System.IO.FileStream nds, uint pos, uint len ) {
nds.Position = pos;
byte[] data = new byte[len];
nds.Read( data, 0, (int)len );
// TODO: Figure out if uncompressed ARM9s work with this.
// (are there even uncompressed ARM9s?)
blz blz = new blz();
blz.arm9 = 1;
byte[] decData = blz.BLZ_Decode( data );
int decompressedSize = decData.Length;
if ( ReplaceInData( decData ) ) {
if ( data.Length == decompressedSize ) {
Console.WriteLine( "Replacing ARM9..." );
data = decData;
} else {
Console.WriteLine( "Replacing and recompressing ARM9..." );
data = blz.BLZ_Encode( decData, 0 );
}
nds.Position = pos;
nds.Write( data, 0, data.Length );
// padding
int newSize = data.Length;
int diff = (int)len - newSize;
for ( int j = 0; j < diff; ++j ) {
nds.WriteByte( 0xFF );
}
// write new size
byte[] newSizeBytes = BitConverter.GetBytes( newSize );
nds.Position = 0x2C;
nds.Write( newSizeBytes, 0, 4 );
}
}
static void PatchArm7( System.IO.FileStream nds, uint pos, uint len ) {
nds.Position = pos;
byte[] data = new byte[len];
nds.Read( data, 0, (int)len );
if ( ReplaceInData( data ) ) {
Console.WriteLine( "Replacing ARM7..." );
nds.Position = pos;
nds.Write( data, 0, data.Length );
}
return;
}
static void PatchOverlay( System.IO.FileStream nds, uint pos, uint len ) {
// http://sourceforge.net/p/devkitpro/ndstool/ci/master/tree/source/ndsextract.cpp
// http://sourceforge.net/p/devkitpro/ndstool/ci/master/tree/source/overlay.h