Drew T
05430eb26e
Ultracode fan-out (12 agents, 1.70M subagent tokens): 6 crack agents, one per NEAR target, each carrying its byte-measured residual + T31's disproved routes, then a distill agent per target that adversarially re-checks the claim. - BANKED ×1 (whole-binary gate, gate_stage --no-propagate per §55b law 1): func_80140958 (260 ins), func_80177B5C (147), func_80132F40 (72), func_8012E364 (67). Every agent MATCH claim was RE-MEASURED BY ME with match_one before it was believed (G3/P9: match_one is a candidate, a bank is the whole-binary gate), and verified against the SOURCE not gate_stage's accumulating verified-list (§55b trap 4). R22 clean-fleet: 140 passed, 0 failed of 140. - engine_core.h moved by exactly one byte-neutral arity fix (void -> no-proto) = fleet-shared, so R22 was mandatory (§61/§63), not the per-binary gate. - func_80140D68 MATCHes standalone but NOT whole-binary — the §30a integration class; its distill agent named the likely cause in advance (DEFINE_func_* extern must return u32*, not void). - func_80176734 217 -> 13 with the instruction count now EXACT (371/371). cse_expr.md §H's "no bank, 5 permuter-shaped clusters" is BYTE-REFUTED: 4 of 5 were steerable from C; the -1 length delta was a combine/LOG_LINK effect (flow.c links a SET only to the next use in the SAME bb), not frame pressure. Two coupled allocator/sched ties survive. - FOUND: docs/gcc-2.7.2-map/sched.md cites gcc-2.8.1 line numbers (birthing_insn_p 2498->2469, adjust_priority 2534->2507, potential_hazard 1345->1318, schedule_select 2646->2616) — surviving papermario numbers Phase 23's source-version correction never swept. One is LOAD-BEARING: §1.7 and §S12 claim the S2 boost needs SET(REG_pseudo,...) so pins must be removed; sched.c:2477 tests only GET_CODE(SET_DEST)==REG with NO pseudo check, discriminator is reg_n_sets==1 (2490). Verified by me against tools/reference/gcc-2.7.2, not taken from the agents. Map edits owed (next task). - MY DEFECT: all 6 agents shared one scratch dir (1,452 files); deliverables are uniquely named and verified intact, but short-named scratch could collide. Per-agent subdirs next wave.
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.