mirror of
https://github.com/Druthulu/BFM-decomp
synced 2026-10-08 09:43:04 -04:00
Drew T
72e6a096ca
CAUGHT BY VERIFYING THE CHECKPOINT INSTEAD OF ASSERTING IT. `.run/wave22/` was covered by the blanket `/.run/*` ignore, so the 13 UNBANKED drafts — 6 NEAR with precise residual diagnoses and 7 that reached match_one MATCH but did not bank whole-binary — existed only on disk. My own checkpoint's "START HERE" list names them as next-session fuel, and they cost ~2.59M subagent tokens to produce. One `git clean -fdx` would have destroyed them: exactly the exposure the .run/giants Fable5 cracks had before Phase 27 curated them (R20). Now allowlisted: .run/wave22/*.c + .run/wave22_targets.json (the per-target canonical callee/data declarations resolved from the real TU scope — the §17a-1 lever the wave was built on). Also commits docs/family-hseq.md, regenerated by this session's family_hseq runs.
35 lines
2.0 KiB
C
35 lines
2.0 KiB
C
/* func_8013B598 (ov_SC01_077_o0, -O0): fills entry a0 of the 0x1C-stride table at
|
|
* D_801DAA08 from a 3-halfword source record.
|
|
*
|
|
* -O0 CONSTANT-OFFSET FOLD (the quirk that stalled this -O0 cluster in Phase 19):
|
|
* at -O0 gcc-2.7.2 folds a constant offset into the memory operand ONLY through a
|
|
* COMPONENT_REF / a real ARRAY_REF on an array-typed DECL:
|
|
* D_801DAA08[a0].f4 = ... -> lui $at,%hi(sym); addu $at,$at,idx; sh %lo(sym+4)($at)
|
|
* A CAST base defeats it (NOP_EXPR over the ADDR_EXPR), and so does pointer indexing:
|
|
* ((S *)D_801DAA08)[a0].f4 -> lui;addiu;addu;sh 4(reg) (+2 ins per store)
|
|
* a1[1] -> addiu $v1,$a0,2; lhu 0($v1) (+1 ins per load)
|
|
* So the table extern must carry the FULL struct type (not the pad-only canonical
|
|
* E_3B7AC), and the source record must be read as ->field, not as a[i]. Casting the
|
|
* incoming POINTER is harmless (a NOP on a register), only the base decl's type matters.
|
|
*
|
|
* Both types are body-scoped (cookbook §100) and the extern is declared inside the body,
|
|
* matching the established -O0 sibling pattern in src/ov_SC07_010/ov_SC07_010_o0.c
|
|
* (func_8013B7AC: `extern E_3B7AC D_801A9420[];` in-body). NOTE FOR BANKING: the canonical
|
|
* sig-layer decl `extern E_3B7AC D_801DAA08[];` (f0 + pad only) CANNOT be used here — it has
|
|
* no f4/f6/f8/fC members. The in-body decl below must be the one that survives; do not also
|
|
* emit a file-scope E_3B7AC decl for D_801DAA08 (conflicting types).
|
|
*
|
|
* 66/66 instructions byte-identical (match_one --o0).
|
|
*/
|
|
void func_8013B598(s32 a0, u16 *a1) {
|
|
typedef struct { u16 f0; u16 f2; u16 f4; } Src_8013B598;
|
|
typedef struct { s32 f0; u16 f4; u16 f6; u16 f8; u16 fA; s32 fC; u8 pad[0xC]; } Spr_8013B598;
|
|
extern Spr_8013B598 D_801DAA08[];
|
|
|
|
D_801DAA08[a0].f0 = 1;
|
|
D_801DAA08[a0].f4 = ((Src_8013B598 *)a1)->f0;
|
|
D_801DAA08[a0].f6 = ((Src_8013B598 *)a1)->f2;
|
|
D_801DAA08[a0].f8 = ((Src_8013B598 *)a1)->f4;
|
|
D_801DAA08[a0].fC = 0x100;
|
|
}
|