GoKawiilResident Evil 4 (GameCube) — decompilation
A complete, byte-identical decompilation of Resident Evil 4 for the Nintendo GameCube: the G4BE08 debug build (the "Nov 25 2004" prototype, both discs), whose Bio4.sym files name every function. Building the repository reproduces main.dol and all 114 REL overlays exactly ( config/G4BE08/build.sha1 , checked on every build).
Objects 1083 (675 in the DOL, 408 across the 114 RELs), all byte-identical; 15641 functions Source ~555k lines of C/C++ ( src/ ), ~33k lines of headers ( include/ ); no assembly files Game code SN Systems ProDG 3.9.3 — GCC 2.95.3 "SN BUILD v1.79", built natively from SN's GPL source drop CRI middleware ( src/lib/adx_* , sfd_* , mpv_* , …) Metrowerks CodeWarrior 2.4.7 (GC/2.7), the compiler CRI shipped the libraries with Nintendo SDK ( src/lib/OS* , GX* , …) Metrowerks CodeWarrior GC/1.2.5n, sources from dolsdk2004
The repository contains no game assets and no code or data copied from the discs. You need your own images of the debug discs to build (disc 1 for main.dol and most RELs, disc 2 for the four island-stage RELs); the original files are read from them at configure time.
Building
Linux, Python 3, ninja. Compilers and tools (decomp-toolkit, objdiff, wibo, the CodeWarrior builds) are downloaded by the first configure run, except the native SN GCC:
# 1. the native cc1/cc1plus (once): needs SN's GPL source drop, see tools/sn-gcc/build.sh SN_GCC_SRC=/path/to/NGC_GNU_SRC/NGC tools/sn-gcc/build.sh # 2. your disc images (disc 1: main.dol + 110 RELs; disc 2: the four island-stage RELs st3_0..st3_3) cp re4_debug_disc1.iso re4_debug_disc2.gcm orig/G4BE08/ # 3. build and verify python3 configure.py && ninja
ninja ends with the progress report (100% matched and linked for the DOL and the REL modules); build/tools/dtk shasum -c config/G4BE08/build.sha1 prints 115 OK lines. To work on a unit, python3 tools/bytecmp.py game/foo compares its object with the original word by word and python3 tools/fdiff.py game/foo <symbol> shows one function.
Layout
src/game/ — the game (C++; a few newlib C units). src/em*/ enemies, src/wep*/ weapons, src/pl*/ player characters, src/st*/ rooms (one REL per room), src/t_*/ , src/Tools/ , src/tools/ the in-game debug editors, src/Sscrn/ the sub-screens, src/lib/ SDK, CRI and runtime.
... continue reading