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Banjo-Kazooie XBLA decompilation project

A research project to decompile the XBLA version of Banjo-Kazooie with help from (looking at the code of) the N64 decompilation project.

Some code, like enumerations or structure definitions, are taken from the N64 project.

Requirements

  • split360 and coff-linker in the PATH.
  • Visual Studio 2010 installed.
  • XBOX 360 SDK installed.
  • Editing tools/vs2010.bat to change PROGRAMFILES to the correct path.
  • WINE installed if building on linux.
  • Editing Makefile to remove the call to WINE if building on Windows (untested).

Usage

You need to have an uncrypted default.xex from Banjo-Kazooie (sha1: 24f81f8058d1be416d95ccfcb5ebd2503eb4fd47) at the root of the project.

Look at the Makefile to see what you can do. But basically, you do make split the first time (and each time you edit bk.yaml), then just make to regenerate merged.xex.

Current state

Still looking how to get matching bytes. At the time of writing, the 10 bytes differences come from __chJinjo_clamp_rotation where 1 instruction is out-of-order compared to the target binary:

// default.xex
mr  r31, r3
mr  r30, r4
lfs f31, 0x54(r31)

// compiled code
lfs f31, 0x54(r3)
mr  r31, r3
mr  r30, r4