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https://github.com/Druthulu/BFM-decomp
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Drew T
537bd90a9a
Found the IDXTAB: ov_SC03_001 @0x8018D7BC holds 5 s16 entries, -1 terminated:
224, 231, 232, 234, 233 — i.e. the ENTIRE parked trio (SC03/53/54/56) plus its DATA
companion (SC03/55 = 233), in one table, in the binary whose *DESTPTR points at the
script-module slot the tracer watched load live an hour earlier.
THE CHAIN (every link register-verified or byte-observed):
ov_SC03_001 IDXTAB @0x8018D7BC -> indices 231/232/234 (+233 data, +224)
func_80128CFC (the S44 wrapper) -> cdFileLocTable[idx] -> {loc,size}
register-tracked: addiu->0x800AE830, lw[0x800AE834] size, lw[0x800AE830] loc
*DESTPTR @0x801EBC68 = 0x801EF468 -> the script slot
the ONLY occurrence of that word fleet-wide; read 8x by code, 2x from inside func_80128CFC
slot confirmed LIVE by tools/cdtrace.py: SC03/76 and SC03/34 both loaded there
and 0x801EF468 lies inside SC03/54's independently-derived base window [0x801EDED0..0x801EF6C8]
VERDICT: LIVE script modules owned by ov_SC03_001. Not dead code, not boss-gated, not
chapter-gated (that framing retired — scripts swap per SCENE). Every sweep missed them
because the SC03 scenes we visited run DIFFERENT overlays (124/125/051).
WHY THE EARLIER HUNTS COULD NOT WORK: the index never appears in CODE — it lives in a
per-overlay DATA table, and so does the destination. Both invisible to fleet-wide code
scans. That is the structural reason four value-scans and three payload-side oracles failed.
NOT PROVED: the exact load BASE within the slot (the three differ in size; none observed
loading). The byte-gate arbitrates — onboard at 0x801EF468 and let the first build decide.
New tool: tools/find_addr_refs.py — register-tracked absolute-address search (cookbook 155:
no window-pairing), self-tested against cdFileLocTable, with a STRICT addu-index rule
(full-address match, not page match — 342 loose hits -> 7 real ones).
METHOD: a runtime observation supplied ONE constant, and that made a previously-impossible
static decode trivial. Neither alone sufficed. Pair the oracles, don't choose between them.