Drew T
cd03c67652
§332 states the class is "6 FUNCTIONS FLEET-WIDE, NONE BANKABLE FROM C" and names
TWO of them. §332a then says, correctly, "Filter before drafting" -- but a filter
needs the LIST, and the rest were never written down, so the draw kept handing them
to agents. A COUNT WITHOUT AN ENUMERATION CANNOT DRIVE A FILTER.
Measured cost of that gap today: main/func_80061FA8 -- a fable agent produced C
that oracle_reorder proves BYTE-CORRECT (0 diffs / 103 ins) and that the pinned
triple still cannot emit. 92,684 tokens to rediscover a documented class. Plus
main/func_8005F0C8 at 289k tokens, the same story via §188.
The sweep is now the list: 10 functions, 1,027 instructions, derived from 1,378
open-stub .s files with 0 unreadable.
TWO DEFECTS IN MY OWN DETECTOR, both caught by demanding it reproduce members I
already knew -- the same rule I have been applying to every other tool today:
* It returned a confident 0 across all 1,378 files. The .s lines carry a
slash-star offset/addr/bytes star-slash comment prefix, and my regex anchored
the mnemonic at start-of-line, so it matched NOTHING. A sweep returning 0 must
prove it CAN return non-zero before the 0 means anything.
* Widened, it found 6 but MISSED func_8005DBD8, which §332a names. Its delay slot
holds a store through %lo -- the tail of a lui-%hi / store-%lo MACRO, not a la.
Same mechanism, different mnemonic: ANY %lo in a delay slot is the second half
of an assembler macro that gcc emits as one atomic insn, so C can never put it
there.
IT PAID FOR ITSELF WITHIN MINUTES: main/func_8005D734 is in the list, and I had
escalated it to Fable at closeness 8 twenty minutes earlier. The sweep's site for
it is EXACTLY the residual that agent described. That escalation could never
succeed and has been stopped.
Ledger: .run/S68_walls_332.txt (--emit-exclude form, ready for draw_waves).
BFM-decomp
A matching decompilation of Brave Fencer Musashi (PlayStation, SLUS-00726, USA 1998) — the first public decompilation effort for this game.
What "matching" means
The goal is C source code that, compiled with the original-era toolchain (PsyQ 4.x / GCC 2.7.2-family + ASPSX via maspsx), produces a byte-for-byte identical SLUS_007.26 and, eventually, byte-identical overlay binaries. SHA1 checksums are the ground truth; "functionally equivalent" does not count.
No ROM content
This repository contains no game assets, no disassembly output, and no ROM-derived data — only source code, build configuration, symbol names/addresses, hashes, and documentation. To build or contribute you must provide your own dump of the game disc (4-track BIN/CUE, redump layout). See .gitignore for the firewall.
Project status
Latest (Phase 19, 2026-06-20): the project builds 136 binaries byte-identical from a clean tree (the EXE + the resident engine + all 134 location overlays);
make check-all→ 136/136. Fleet byte-identical-from-source is 58.0% (function-instance-weighted; see the PhaseEnds for the byte-weighted ~30% figure and what it includes). Shared engine functions are matched once inov_SC01_077and propagated ×134 viatools/dedup_propagate.py. (The narrative below is Phase-11/12-era; a full refresh is part of the public-flip prep.)
Gen1 (foundation) complete — the matching pipeline is proven end-to-end. make extract && make build && make check rebuilds SLUS_007.26 byte-for-byte identical (SHA1 143dbb89…) from C + assembly, reproducibly across many sessions.
- Compiler pinned by evidence:
gcc-2.7.2-psx -O2 -G0 -mips1 -mcpu=3000+maspsx --aspsx-version=2.56 --expand-div. - 52 functions hand-matched to byte-identical machine code — including the LZSS streaming decompressor — with a decomp-permuter + matching-cookbook "flywheel" to accelerate the next.
- 959 PsyQ SDK functions linked byte-identical (libcd, libgs, libgte, libspu/libsnd, libgpu, libc2, libmcrd, libapi/libcard, libetc) straight from the real PsyQ 4.0 libraries instead of re-decompiling them — bringing byte-identical-from-source coverage of the EXE to ~50%.
- File-loader / overlay system reverse-engineered, with the resident engine blob + location overlays' load addresses proven byte-identical against a live PCSX-Redux RAM dump.
About half the EXE is still INCLUDE_ASM stubs (correct bytes, not yet C), and the bulk of the game lives in compressed overlays inside the .CD archives — Gen2 (overlays & engine at scale) is underway:
- The build toolchain is binary-agnostic (one parameterized pipeline builds any binary), and the always-resident engine blob rebuilds byte-for-byte from source (SHA1
8e17e02f…) — the second binary reconstructed exactly, after the EXE — and is now 86% hand-matched C (123 / 146 functions, up from 0): its scripting turned out to be compiled-MIPS state/mode dispatch, not a bytecode VM, and the save-file + sound (SQV) formats are documented. The harvest used a reusable swarm-of-agents + bit-for-bit byte-gate method (a wrong match can't be accepted) —tools/harvest_verify.py+tools/match_one.py, which carry straight into the overlay phase. - A cross-binary deduplication pipeline is live: a Ghidra-free signer fingerprints all 134 location overlays, and the report finds ~9,000 byte-identical function groups shared across binaries (~28 MB of collapsible code) — a single engine function is byte-identical in all 134 overlays. This is "one match unlocks many": each engine match will be auto-credited across the overlay fleet.
Current phase and detailed progress live in phase-ends/ (newest PhaseEnd_*.md = current state); methodology, rules, and the full roadmap are in PROJECT_CONTEXT.md; environment setup in docs/SETUP.md.
This project is developed primarily by Claude Code driving Ghidra through an MCP server; see CLAUDE.md.
License
Private repository for now. AGPL-3.0 is planned at public release, modeled on sotn-decomp. tools/brave-CUE/ is CUE's BRAVE extractor (GPL, source included) and retains its own license.