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BFM-decomp/docs
Drew T 095a611e75 feat(phase-26): §8 jtbl-rodata tooling — overlay PoC proven (func_8012ACE0, R22 136/136)
- 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)
2026-07-12 16:37:37 -06:00
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