SaveLoadRoutine (1,165 ins) is the largest open function in the project, 9.2%
of all remaining work, and has been carried as the §434 WALL. Gated alone
through gate_main, with the §376/§378 chain already applied, the verdict layer
says: "SaveLoadRoutine is BYTE-IDENTICAL; all 3989 differing bytes are
ELSEWHERE". The body has been correct the whole time.
What rejects it is where its FOUR jump tables (jtbl_80072ED4/EEC/F0C/F24) land:
.data/.rodata (jump tables) 3,787 bytes 94.9%
.text (perturbed code) 202 bytes 5.1%
and the built image is 4 bytes SHORTER than retail (413,692 vs 413,696) --
§446's first diagnostic, firing on a function §446 was not written about.
main_diff_locate.classify() already HAD a TABLE REJECT class, added in S72 under
a docstring reading "THE THIRD CLASS EXISTS BECAUSE THE FIRST TWO MISLABELLED
IT". It could not fire here for two independent reasons:
* it keyed on the literal string `(.rodata)`, but main's section_order is
[.rodata, .text, .data, .bss] -- its rodata sits BELOW .text and its jump
tables live in `.data` objects, so TABLE REJECT was UNREACHABLE BY
CONSTRUCTION on the binary with the most jump-table functions left. A
section NAME is not a section ROLE.
* it demanded purity (ro == outside), so 5% perturbed code defeated an
all-or-nothing test and dropped the verdict through to PLUMBING REJECT --
whose advice (fix_arity_callers -> cast_self_callers) addresses the 5% and
cannot touch the 95% that is data. That chain was run on this function
TWICE today and fixed nothing, exactly as the evidence predicts.
Now: table bytes counted in (.data) OR (.rodata), and the test is DOMINANCE
(>=60%) rather than purity, reporting the split and naming which part is the
carve problem and which the declaration problem.
Negative control over all five pre-existing verdict shapes (pure BODY, pure
PLUMBING, pure TABLE, MIXED, NOT FOUND) plus the S75 shape: 5 of 6 verdicts
UNCHANGED, only the SaveLoadRoutine shape flips PLUMBING REJECT -> TABLE
REJECT (MIXED).
Cookbook §447. The law: a class that cannot fire is worse than a class that does
not exist -- it converts "I don't know" into confident, specific, wrong advice.
When a verdict names a subsystem, check that subsystem owns the MAJORITY OF THE
BYTES before acting on it.
func_800316F8's .text was BYTE-IDENTICAL and all 18 differing bytes were its own jump
table; the tool called it a PLUMBING REJECT and routed it to the §376 declaration chain,
advice that would never have fixed it. classify() now separates a .rodata-only
divergence and names it §405-A: match_one compares .text ONLY, so a draft sits at
closeness 0 while emitting a wrong table — gcc emits case BODIES in source order while
entry i points at case i, so case value and case order are independent and only the
order is pinned by .text.
Attribution reads one symbol LOW for a cc1-emitted table (once the function is C its
table is a $L label, not a jtbl_ data symbol, so the bytes land in the PRECEDING table's
extent) — the OBJECT name is what identifies it, not the symbol name. Shared by
gate_main so both report the same four verdicts.
Controls: self-test PASS, green build IDENTICAL, and the known func_800316F8 case now
classifies TABLE REJECT.
main's gate could only ever say "got X want Y". S71 read 7 such verdicts as body
rejects and recorded 11 functions as "PROVEN gate-rejects, §376 in its purest form".
They are not: all 11 are switch functions, and the blocker is that main has had
exactly ONE rodata carve since Phase 7 (LZSS's jtbl_80072A38). Every other main jump
table stayed raw in the tail data, so a drafted switch DOUBLE-EMITTED its table, the
image grew (+28/+52/+76/+84 measured), and all 238 symbols above 0x80072A4C shifted.
* tools/main_diff_locate.py (NEW) — turns a red image into a named list of divergent
symbols via the linker map; per-byte attribution, self-test flips a byte at a known
address and asserts the containing symbol (plus the identical-pair direction).
* gate_main.py — PRESERVES the red image + map before the R40 baseline control
rebuilds over it, and auto-localizes: BODY REJECT vs PLUMBING REJECT vs MIXED. Also
-j on the build (was single-threaded) and the §376 drop list written to
.run/gate_main_dropped.json with the reconciliation chain.
* splat.us.exe.yaml — the .rodata carve extends from the LZSS table alone to the whole
contiguous game-jtbl span 0x80072A38-0x80072C70 (12 tables, one 800.o run).
Byte-neutral with no drafts substituted (probed first).
* jtbl_rodata_pads.py — --derive now works for main: one file-0-vram expression makes
both address->bytes and yaml-piece->address correct for the EXE's 0x800 header and
leaves flat overlays unchanged. Makefile arms it for BINARY=main.
Banked byte-identical: func_8001A114, func_8001AAD0, func_8001AF34 — three of the
eleven. 25 of main's 59 frontier functions (6,215 of 12,912 instructions) are in this
class; the remaining spans need src/800.c split at the TU boundaries the spans reveal.
Drew T