/// <summary>
/// Determine whether the bytes from a Patch's expected data match the contents of the ROM.
/// </summary>
private bool ValidateJSRHookBytes(PullJSRHookPatch patch, Stream romStream)
{
uint patchLength = patch.Length;
byte[] buffer = new byte[patchLength];
if (!this.TryReadBuffer(romStream, patch.StartAddress, buffer))
{
Console.Write("tryreadbuffer failed in validatebytes");
return false;
}
// DumpBuffer("Actual ", buffer, buffer.Length);
// DumpBuffer("Expected", expectedData.Content, buffer.Length);
//int mismatches = 0;
for (int index = 0; index < patchLength; index++)
{
byte actual = buffer[index];
if (!patch.MetaCheck((IEnumerable<byte>)buffer))
{
Trace.WriteLine("JSR HOOK FAILED");
return false;
}
}
Trace.WriteLine("Valid.");
return true;
}
/// <summary>
/// Construct a Pull JSR HOOK patch from the metadata blob.
/// </summary>
private bool TrySynthesizePullJsrHookPatch(Blob metadata, out Patch patch, ref int offset, List<Blob> blobs)
{
uint address = 0;
string name;
if (!metadata.TryGetUInt32(ref address, ref offset))
{
throw new InvalidDataException("This patch's metadata contains an incomplete 4-byte patch record (no address).");
}
if (!TryReadMetaString(metadata, out name, ref offset))
{
Trace.WriteLine("Patch at metadata offset: " + offset + "contains invalid name."); name ="UNKNOWN PATCH";
}
byte[] jsrbytes = new byte[] {0xF0,0x48,0x00,0x09};
patch = new PullJSRHookPatch(name, address, address + 3);
patch.IsMetaChecked = true;//remove thsi
patch.Payload = new Blob(patch.StartAddress, jsrbytes);
//this.blobs.Add(new Blob(address, BitConverter.GetBytes(newValue).Reverse()));
//this.blobs.Add(new Blob(address + BaselineOffset, BitConverter.GetBytes(oldValue).Reverse()));
return true;
}
