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Resident Evil: Dead Aim
OriginPlayStation 2
TechnologyNative C/C++ port (engine reimplementation)
Available forWindows, Linux, macOS
View official projectAbout the project
Resident Evil: Dead Aim, conocido en Japón como Gun Survivor 4 Biohazard Heroes Never Die(REDA) , es un videojuego de disparos con pistola de luz para PlayStation 2. Es el cuarto capítulo de la serie Gun Survivor, y fue programado por Cavia.
Official project information
Information
Bullseye is a tool to reverse engineer Resident Evil: Dead Aim.
From ripping the game assets (Such as audio files, model data, textures...) to (Hopefully) growing into a decompilation for the game.
Status
The build reproduces SLES_514.48 byte for byte. Everything the
console loads is assembled and linked from this repository; the ELF
container around it is carried from the original (see
What "matching" means here).
"Undecompiled code" is still assembly pulled in via INCLUDE_ASM.
Progress
<!-- progress:start -->0.0030% of the code is decompiled (40 / 1,328,837 bytes).
| File | Functions | Bytes |
|---|---|---|
src/text_0.c | 1 | 40 |
Requirements
- EE binutils —
mips64r5900el-ps2-elf-as,-ld,-objdumponPATH. Install from ps2dev/ps2toolchain-ee. - Python 3
- An original dump of the game.
Getting started
1. Fetch the ee-gcc toolchain
bash tools/setup.sh
Downloads the period compiler (ee-gcc2.96) from
decompme/compilers, plus
objdiff-cli, m2c and decomp-permuter, and installs splat and
ninja. Everything lands in tools/ and is gitignored.
2. Extract the executable from your disc image
SLES_514.48 sits in the root of the disk.
Put it at orig/SLES_514.48 and check it:
sha1sum orig/SLES_514.48
# dc5b5172c9be651c476fea0e7620e47775c9dd81
A different hash means a different region or revision, and the config in
config/ will not apply.
3. Build
python3 configure.py --split
ninja
--split runs splat, patches VU0 operand syntax for modern gnu-as, and
extracts the ELF container. You only need to re-run it after changing
config/splat.SLES_514.48.yaml or config/symbol_addrs.txt.
4. Confirm the match
A successful build ends with:
REPACK build/SLES_514.48
sha1 dc5b5172c9be651c476fea0e7620e47775c9dd81
expected dc5b5172c9be651c476fea0e7620e47775c9dd81
OK -- byte-identical to the original
VERIFY build/SLES_514.48
MATCH -- every byte the original loads is reproduced exactly
build/SLES_514.48 is then interchangeable with the original, and should boot
in PCSX2:
pcsx2 -elf $PWD/build/SLES_514.48 <image.iso>
What "matching" means here
Two separate checks run on every build.
tools/verify.py compares the loadable image — every byte either
PT_LOAD maps into memory. This is the one that says the code and data
are correct.
tools/repack.py substitutes that image into the container extracted
from the original and checks a whole-file sha1. The container itself is
carried, not rebuilt: it holds section headers, .gnu.linkonce.* COMDATs,
and the .DVP.* VU1 microcode overlays that SCE's dvp-as produced. Those, we can't reproduce.
Supported hashes
sha256 e78aed719c50b73b8f065698d1a3b6c866ae7bd5e5b460af536a34f1e0eb6956 RESIDENT_EVIL_DEAD_AIM.ISO (Dump from Retail DVD)
sha1 dc5b5172c9be651c476fea0e7620e47775c9dd81 SLES_514.48 (PAL executable)
