- ld_interleave.py --order: address-ordered N-piece data->rodata->data sandwich
for overlays with 2+ matched jr-functions; legacy --front/--tail path is byte-
untouched (main EXE + the 133 single-carve func_8012ACE0 siblings unaffected)
- jtbl_carve.py rewritten additive/regenerate-from-config: parse the tail data
region + existing .rodata carves, split the containing data piece for the new
jtbl, re-emit the address-ordered pieces + the --order arg; same-subseg carve
collision fails loud (-> jr isolation); idempotent
- jtbl_family_bank.py: `make extract` BEFORE the carve (asm must match the reverted
committed config; the old error-string retry was fragile) + revert-on-carve-fail
- family-1: func_801734BC (34-ins PURE jr, ov_SC01_077_after) matched in ov077
(shared-tail switch idiom) + banked 133/133 siblings = x134 — CROSS-subseg
multi-jtbl (func_8012ACE0 in _a + func_801734BC in _after)
- R22 clean-fleet 136/136 byte-identical (~52s); 0 NON_MATCHING (G4)
- overlay jr-functions can now bank as C: gcc switch jump tables form a .rodata island at
the overlay TAIL; carve a matched fn's jtbl into a dotted [.rodata, <code-subseg>] subseg
+ ld_interleave (data->rodata->data sandwich) places it byte-exact. cookbook §8a + SETUP.
- tools/ld_interleave.py: --section .<binary> param (derives the <binary>_TEXT/DATA/RODATA/
DATA2/BSS symbol prefix); default .main = the EXE, byte-identical (backward-compat proven)
- Makefile + config/overlays.mk: <bin>_JTBL_INTERLEAVE hook + a $(strip)-guarded extract
branch (gotcha caught: a trailing #comment on the := left whitespace -> non-empty -> the
branch misfired on resident with the EXE defaults)
- PoC: func_8012ACE0 (25-ins jr-fn in ov_SC01_077) reconciled (canon_sig_reconcile) + banked
BYTE-IDENTICAL d19c9580 -- the first overlay jr-function matched through the C pipeline
- R22 FULL-FLEET clean rebuild: 136 passed, 0 failed (main 143dbb89 unaffected by the
ld_interleave change); 0 NON_MATCHING in any default build (G4)
- P9 findings: func_80159C84/func_8015444C (the 2 carried Fable5 jr bodies) are rtu_match
FALSE-matches (incomplete jtbls: 52B vs 56B -> never bank); the maspsx "hang" scare was a
truncated experimental-file artifact (real pipeline builds in ~1s)
- metrics: distinct-code 39.1% (50,572 unique fns), instr-weighted 62.9%
- NEXT: the ×134 automation (generate the per-overlay carve + template the reconciled body)
- ld_interleave.py: argparse [ld] + --front/--tail (repeatable; default to the EXE's
sandwich objects, transitional); the .data->.rodata->.data island is EXE-specific
- Makefile extract: ld_interleave call wrapped in ifeq(BINARY,main) (overlays have no
rodata island) and passes --front 53198.data.o --tail 6324C.data.o explicitly
- GATES: positive extract+build -> 143dbb89 (tail_data=1 from the threaded flag);
negative --tail BOGUS.data.o -> 'tail data object not found' exit=1 (threaded);
restore -> 143dbb89
Drew T