From ee3419ff068ed75ea586daa748dd966e1d25376e Mon Sep 17 00:00:00 2001
From: Drew T <50529377+Druthulu@users.noreply.github.com>
Date: Sat, 12 Sep 2026 18:13:35 -0600
Subject: [PATCH] =?UTF-8?q?src(phase-37):=20T4=20step=20(d)=20t4=5Fsig3=20?=
 =?UTF-8?q?=E2=80=94=20restruct:=20signature=20func=5F80035210=20=E2=80=94?=
 =?UTF-8?q?=20IDENTICAL=20=C2=B7=201=20files=20written=20|=20R22=20check-a?=
 =?UTF-8?q?ll:=20218=20passed,=200=20failed=20of=20218=20|=20=F0=9F=9B=91?=
 =?UTF-8?q?=20T4=20in=20progress=20(S108,=20sig=5Fcycle)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .run/P36/delever/calibration.json       | 302 +++++++--------
 .run/P37/baseline/r22_t4_sig3.log       | 476 ++++++++++++++++++++++++
 .run/P37/restruct/apply_t4_sig3.log     |   3 +
 .run/P37/restruct/calibrate_t4_sig3.log |   5 +
 .run/P37/restruct/cycle_t4sig.log       |   2 +
 .run/P37/restruct/ledger.jsonl          |   1 +
 .run/P37/restruct/run_t4_sig3.log       |   5 +
 .run/P37/restruct/snapshot_t4_sig3.log  |   1 +
 phase-ends/CURRENT_PHASE.md             |   4 +-
 src/800_b_2.c                           |  13 +-
 10 files changed, 653 insertions(+), 159 deletions(-)
 create mode 100644 .run/P37/baseline/r22_t4_sig3.log
 create mode 100644 .run/P37/restruct/apply_t4_sig3.log
 create mode 100644 .run/P37/restruct/calibrate_t4_sig3.log
 create mode 100644 .run/P37/restruct/run_t4_sig3.log
 create mode 100644 .run/P37/restruct/snapshot_t4_sig3.log

diff --git a/.run/P36/delever/calibration.json b/.run/P36/delever/calibration.json
index d3f39a08d3..ca0beb2ff1 100644
--- a/.run/P36/delever/calibration.json
+++ b/.run/P36/delever/calibration.json
@@ -1,7 +1,7 @@
 {
- "head": "623069579",
+ "head": "0366295e2",
  "stamp": "e34b6679685f",
- "generated": "2026-09-12 18:09",
+ "generated": "2026-09-12 18:11",
  "aliases": [
   "main",
   "md_SC07_004",
@@ -21,176 +21,176 @@
   "main": {
    "objects": 85,
    "identical": 85,
-   "seconds": 6.773000000000001,
-   "mean_s": 0.08
+   "seconds": 7.239000000000001,
+   "mean_s": 0.085
   },
   "md_SC07_004": {
    "objects": 1,
    "identical": 1,
-   "seconds": 0.511,
-   "mean_s": 0.511
+   "seconds": 0.542,
+   "mean_s": 0.542
   },
   "ov_SC03_015": {
    "objects": 32,
    "identical": 32,
-   "seconds": 4.6209999999999996,
-   "mean_s": 0.144
+   "seconds": 5.001000000000001,
+   "mean_s": 0.156
   },
   "ov_SC04_011": {
    "objects": 28,
    "identical": 28,
-   "seconds": 3.8950000000000005,
-   "mean_s": 0.139
+   "seconds": 4.139000000000001,
+   "mean_s": 0.148
   }
  },
  "per_object_seconds": {
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+  "build/src/ov_SC04_011/ov_SC04_011_jr_8013FFD8.o": 0.067,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80140608.o": 0.183,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8015444C.o": 0.077,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80154C24.o": 0.179,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_801588CC.o": 0.095,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80159C84.o": 0.069,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8015A3C8.o": 0.07,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8015AE2C.o": 0.101,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8015C32C.o": 0.371,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8016AB6C.o": 0.224,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80171B4C.o": 0.106,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_801734BC.o": 0.173,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_801789AC.o": 0.063,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80178D40.o": 0.106,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8017A4AC.o": 0.071,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8017AE2C.o": 0.106,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8017D494.o": 0.442,
+  "build/src/ov_SC04_011/ov_SC04_011_o0b.o": 0.054,
+  "build/src/ov_SC04_011/ov_SC04_011_o0c.o": 0.065
  },
  "ok": true,
- "seconds": 2.0
+ "seconds": 2.1
 }
diff --git a/.run/P37/baseline/r22_t4_sig3.log b/.run/P37/baseline/r22_t4_sig3.log
new file mode 100644
index 0000000000..7bc1908614
--- /dev/null
+++ b/.run/P37/baseline/r22_t4_sig3.log
@@ -0,0 +1,476 @@
+clean: removed build/, expected/, and the regenerated splat tree (asm/, assets/, undefined_*_auto.txt).
+disc-extract: up to date — extracted/retail/ matches the committed manifest (sha1 e5c6019249dec3c71bb2cf40658a78439dddb037)
+splat 0.41.0 (powered by spimdisasm 1.41.0)
+
  0%|          | 0/1096 [00:00<?, ?it/s]
Loading symbols (symbols.us):   0%|          | 0/1096 [00:00<?, ?it/s]
Loading symbols (symbols.us): 100%|██████████| 1096/1096 [00:00<00:00, 199911.16it/s]
+
  0%|          | 0/47 [00:00<?, ?it/s]
Loading symbols (symbols.us.ram):   0%|          | 0/47 [00:00<?, ?it/s]
Loading symbols (symbols.us.ram): 100%|██████████| 47/47 [00:00<00:00, 617969.55it/s]
+
  0%|          | 0/2 [00:00<?, ?it/s]
Scanning header:   0%|          | 0/2 [00:00<?, ?it/s]
Scanning main:   0%|          | 0/2 [00:00<?, ?it/s]  
+Rodata segment '800' may belong to the text segment '800'
+    Based on the usage from the function LzssDecodeSector to the symbol jtbl_80072A38
+
+The rodata segment '800' has jumptables that are not aligned properly file-wise, indicating one or more likely file split.
+File split suggestions for this segment will follow in config yaml format:
+      - [0x6324C, .rodata]
+      - [0x63388, .rodata]
+      - [0x633FC, .rodata]
+
+
+Rodata segment '800_b' may belong to the text segment '800_b'
+    Based on the usage from the function func_8002B0B4 to the symbol jtbl_80072E44
+
+Rodata segment '800_b_2' may belong to the text segment '800_b_2'
+    Based on the usage from the function func_8002DC68 to the symbol jtbl_80072F3C
+
+The rodata segment '800_b_2' has jumptables that are not aligned properly file-wise, indicating one or more likely file split.
+File split suggestions for this segment will follow in config yaml format:
+      - [0x63920, .rodata]
+
+
+Rodata segment '800_c' may belong to the text segment '800_c'
+    Based on the usage from the function func_80035270 to the symbol jtbl_800732A0
+
Scanning main: 100%|██████████| 2/2 [00:01<00:00,  1.74it/s]
Scanning main: 100%|██████████| 2/2 [00:01<00:00,  1.74it/s]
+
  0%|          | 0/2 [00:00<?, ?it/s]
Splitting header:   0%|          | 0/2 [00:00<?, ?it/s]
Splitting main:   0%|          | 0/2 [00:00<?, ?it/s]  
Splitting main: 100%|██████████| 2/2 [00:00<00:00,  2.67it/s]
Splitting main: 100%|██████████| 2/2 [00:00<00:00,  2.67it/s]
+
  0%|          | 0/2 [00:00<?, ?it/s]
Linker script header:   0%|          | 0/2 [00:00<?, ?it/s]
Linker script main:   0%|          | 0/2 [00:00<?, ?it/s]  
Linker script main: 100%|██████████| 2/2 [00:00<00:00, 95.06it/s]
+Split 340 KB (82.28%) in defined segments
+              header:     2 KB (0.50%) 1 split, 0 cached
+                   c:   338 KB (81.78%) 85 split, 0 cached
+             unknown:      0 B (0.00%) from unknown bin files
+ld_interleave --order: .main island = 8 pieces [53198.data.o, 800.o, 63470.data.o, 800_b.o, 800_b_2.o, 63940.data.o, 800_c.o, 63C4C.data.o]; pre=0 text=85 empties=166 bss=85
+[ OK ] ov_SC05_000
+[ OK ] resident
+[ OK ] ov_SC01_000
+[ OK ] ov_SC06_000
+[ OK ] ov_SC04_000
+[ OK ] ov_SC03_002
+[ OK ] ov_SC01_006
+[ OK ] ov_SC01_005
+[ OK ] ov_SC02_003
+[ OK ] ov_SC01_077
+[ OK ] ov_SC04_019
+[ OK ] ov_SC02_000
+[ OK ] ov_SC04_018
+[ OK ] ov_SC03_001
+[ OK ] ov_SC03_006
+[ OK ] ov_SC01_004
+[ OK ] ov_SC01_001
+[ OK ] ov_SC01_074
+[ OK ] ov_SC01_008
+[ OK ] ov_SC07_000
+[ OK ] ov_SC02_004
+[ OK ] ov_SC02_015
+[ OK ] ov_SC02_021
+[ OK ] ov_SC01_080
+[ OK ] ov_SC01_084
+[ OK ] ov_SC01_009
+[ OK ] ov_SC02_016
+[ OK ] ov_SC02_005
+[ OK ] ov_SC02_026
+[ OK ] ov_SC02_039
+[ OK ] ov_SC02_028
+[ OK ] ov_SC02_027
+[ OK ] ov_SC02_011
+[ OK ] ov_SC02_031
+[ OK ] ov_SC03_003
+[ OK ] ov_SC02_017
+[ OK ] ov_SC02_035
+[ OK ] ov_SC02_041
+[ OK ] ov_SC03_010
+[ OK ] ov_SC03_012
+[ OK ] ov_SC03_011
+[ OK ] ov_SC03_013
+[ OK ] ov_SC03_023
+[ OK ] ov_SC03_007
+[ OK ] ov_SC03_024
+[ OK ] ov_SC03_031
+[ OK ] ov_SC03_092
+[ OK ] ov_SC03_014
+[ OK ] ov_SC03_029
+[ OK ] ov_SC03_015
+[ OK ] ov_SC03_089
+[ OK ] ov_SC03_090
+[ OK ] ov_SC03_091
+[ OK ] ov_SC03_028
+[ OK ] ov_SC03_095
+[ OK ] ov_SC03_030
+[ OK ] ov_SC03_096
+[ OK ] ov_SC03_093
+[ OK ] ov_SC03_097
+[ OK ] ov_SC03_094
+[ OK ] ov_SC03_101
+[ OK ] ov_SC03_098
+[ OK ] ov_SC03_099
+[ OK ] ov_SC03_109
+[ OK ] ov_SC03_102
+[ OK ] ov_SC03_108
+[ OK ] ov_SC03_110
+[ OK ] ov_SC03_113
+[ OK ] ov_SC03_103
+[ OK ] ov_SC03_104
+[ OK ] ov_SC03_112
+[ OK ] ov_SC03_105
+[ OK ] ov_SC03_100
+[ OK ] ov_SC03_115
+[ OK ] ov_SC03_111
+[ OK ] ov_SC03_114
+[ OK ] ov_SC03_116
+[ OK ] ov_SC03_126
+[ OK ] ov_SC03_121
+[ OK ] ov_SC04_003
+[ OK ] ov_SC04_008
+[ OK ] ov_SC04_009
+[ OK ] ov_SC04_006
+[ OK ] ov_SC03_117
+[ OK ] ov_SC03_119
+[ OK ] ov_SC03_118
+[ OK ] ov_SC03_125
+[ OK ] ov_SC04_004
+[ OK ] ov_SC04_010
+[ OK ] ov_SC04_007
+[ OK ] ov_SC04_002
+[ OK ] ov_SC03_124
+[ OK ] ov_SC04_005
+[ OK ] ov_SC04_012
+[ OK ] ov_SC04_021
+[ OK ] ov_SC05_006
+[ OK ] ov_SC05_002
+[ OK ] ov_SC04_016
+[ OK ] ov_SC05_004
+[ OK ] ov_SC05_009
+[ OK ] ov_SC05_001
+[ OK ] ov_SC05_007
+[ OK ] ov_SC05_003
+[ OK ] ov_SC04_015
+[ OK ] ov_SC05_008
+[ OK ] ov_SC04_020
+[ OK ] ov_SC05_005
+[ OK ] ov_SC04_011
+[ OK ] ov_SC05_011
+[ OK ] ov_SC05_010
+[ OK ] ov_SC05_019
+[ OK ] ov_SC06_015
+[ OK ] ov_SC06_008
+[ OK ] ov_SC06_013
+[ OK ] ov_SC06_016
+[ OK ] ov_SC06_014
+[ OK ] ov_SC06_011
+[ OK ] ov_SC06_010
+[ OK ] ov_SC05_018
+[ OK ] ov_SC06_020
+[ OK ] ov_SC05_017
+[ OK ] ov_SC06_018
+[ OK ] ov_SC06_025
+[ OK ] ov_SC06_027
+[ OK ] ov_SC06_022
+[ OK ] ov_SC06_006
+[ OK ] ov_SC06_024
+[ OK ] ov_SC07_008
+[ OK ] md_MAIN_013
+[ OK ] md_MAIN_014
+[ OK ] md_MAIN_015
+[ OK ] ov_SC07_002
+[ OK ] md_MAIN_016
+[ OK ] md_MAIN_017
+[ OK ] md_MAIN_018
+[ OK ] md_MAIN_019
+[ OK ] md_MAIN_020
+[ OK ] ov_SC07_001
+[ OK ] ov_SC07_009
+[ OK ] md_MAIN_021
+[ OK ] ov_SC06_030
+[ OK ] md_MAIN_023
+[ OK ] md_MAIN_024
+[ OK ] md_MAIN_022
+[ OK ] md_MAIN_025
+[ OK ] md_MAIN_026
+[ OK ] md_MAIN_027
+[ OK ] md_MAIN_030
+[ OK ] md_MAIN_028
+[ OK ] md_MAIN_029
+[ OK ] md_MAIN_031
+[ OK ] md_MAIN_032
+[ OK ] md_MAIN_033
+[ OK ] md_MAIN_035
+[ OK ] ov_SC06_032
+[ OK ] md_MAIN_036
+[ OK ] md_MAIN_034
+[ OK ] md_MAIN_037
+[ OK ] md_MAIN_038
+[ OK ] ov_MAIN_012
+[ OK ] md_MAIN_039
+[ OK ] md_MAIN_040
+[ OK ] md_MAIN_042
+[ OK ] md_MAIN_043
+[ OK ] md_MAIN_041
+[ OK ] md_MAIN_044
+[ OK ] md_MAIN_046
+[ OK ] md_MAIN_045
+[ OK ] md_MAIN_047
+[ OK ] ov_SC06_033
+[ OK ] ov_SC06_029
+[ OK ] ov_SC07_010
+[ OK ] md_MAIN_008
+[ OK ] ov_SC07_011
+[ OK ] md_MAIN_011
+[ OK ] md_MAIN_001
+[ OK ] md_SC03_073
+[ OK ] md_SC03_078
+[ OK ] md_SC03_074
+[ OK ] ov_SC07_007
+[ OK ] md_SC03_077
+[ OK ] md_SC03_075
+[ OK ] md_SC03_076
+[ OK ] md_SC03_079
+[ OK ] md_SC03_132
+[ OK ] md_SC03_133
+[ OK ] ov_SC03_107
+[ OK ] md_SC03_137
+[ OK ] md_SC03_134
+[ OK ] md_SC03_136
+[ OK ] md_SC03_135
+[ OK ] md_SC04_025
+[ OK ] md_SC04_024
+[ OK ] md_MAIN_003
+[ OK ] md_SC04_029
+[ OK ] md_SC04_026
+[ OK ] md_SC03_138
+[ OK ] md_SC04_028
+[ OK ] md_SC04_027
+[ OK ] md_SC05_024
+[ OK ] md_SC05_025
+[ OK ] md_SC05_023
+[ OK ] md_SC05_028
+[ OK ] md_MAIN_007
+[ OK ] md_SC04_030
+[ OK ] md_SC05_027
+[ OK ] md_MAIN_009
+[ OK ] md_SC03_053
+[ OK ] md_SC05_026
+[ OK ] md_SC05_029
+[ OK ] md_SC03_056
+[ OK ] md_SC03_054
+[ OK ] ov_SC07_006
+[ OK ] md_SC02_009
+[ OK ] ov_SC02_037
+[ OK ] md_SC07_004
+[ OK ] md_SC07_003
+extract-all: 217 extracted, 0 failed of 217 (+ main, serial)
+[ OK ] resident
+[ OK ] ov_SC05_000
+[ OK ] ov_SC01_000
+[ OK ] ov_SC04_000
+[ OK ] ov_SC01_005
+[ OK ] ov_SC01_006
+[ OK ] ov_SC01_001
+[ OK ] ov_SC03_006
+[ OK ] ov_SC03_002
+[ OK ] ov_SC06_000
+[ OK ] ov_SC01_077
+[ OK ] ov_SC04_018
+[ OK ] ov_SC04_019
+[ OK ] ov_SC03_001
+[ OK ] ov_SC02_000
+[ OK ] ov_SC02_003
+[ OK ] ov_SC01_004
+[ OK ] ov_SC01_074
+[ OK ] ov_SC07_000
+[ OK ] ov_SC01_008
+[ OK ] ov_SC02_004
+[ OK ] ov_SC01_080
+[ OK ] ov_SC01_009
+[ OK ] ov_SC02_015
+[ OK ] ov_SC01_084
+[ OK ] ov_SC02_021
+[ OK ] ov_SC02_016
+[ OK ] ov_SC02_011
+[ OK ] ov_SC02_026
+[ OK ] ov_SC02_017
+[ OK ] ov_SC02_005
+[ OK ] ov_SC02_039
+[ OK ] ov_SC02_031
+[ OK ] ov_SC02_035
+[ OK ] ov_SC02_027
+[ OK ] ov_SC02_041
+[ OK ] ov_SC03_003
+[ OK ] ov_SC02_028
+[ OK ] ov_SC03_010
+[ OK ] ov_SC03_012
+[ OK ] ov_SC03_007
+[ OK ] ov_SC03_011
+[ OK ] ov_SC03_013
+[ OK ] ov_SC03_023
+[ OK ] ov_SC03_014
+[ OK ] ov_SC03_015
+[ OK ] ov_SC03_030
+[ OK ] ov_SC03_024
+[ OK ] ov_SC03_031
+[ OK ] ov_SC03_029
+[ OK ] ov_SC03_089
+[ OK ] ov_SC03_028
+[ OK ] ov_SC03_092
+[ OK ] main
+[ OK ] ov_SC03_090
+[ OK ] ov_SC03_093
+[ OK ] ov_SC03_095
+[ OK ] ov_SC03_096
+[ OK ] ov_SC03_091
+[ OK ] ov_SC03_094
+[ OK ] ov_SC03_097
+[ OK ] ov_SC03_098
+[ OK ] ov_SC03_099
+[ OK ] ov_SC03_100
+[ OK ] ov_SC03_101
+[ OK ] ov_SC03_102
+[ OK ] ov_SC03_109
+[ OK ] ov_SC03_103
+[ OK ] ov_SC03_108
+[ OK ] ov_SC03_110
+[ OK ] ov_SC03_114
+[ OK ] ov_SC03_113
+[ OK ] ov_SC03_111
+[ OK ] ov_SC03_104
+[ OK ] ov_SC03_112
+[ OK ] ov_SC03_105
+[ OK ] ov_SC03_115
+[ OK ] ov_SC03_116
+[ OK ] ov_SC03_117
+[ OK ] ov_SC03_118
+[ OK ] ov_SC03_119
+[ OK ] ov_SC03_126
+[ OK ] ov_SC03_125
+[ OK ] ov_SC03_121
+[ OK ] ov_SC04_006
+[ OK ] ov_SC04_003
+[ OK ] ov_SC04_004
+[ OK ] ov_SC04_002
+[ OK ] ov_SC04_008
+[ OK ] ov_SC04_005
+[ OK ] ov_SC03_124
+[ OK ] ov_SC04_007
+[ OK ] ov_SC04_009
+[ OK ] ov_SC04_010
+[ OK ] ov_SC04_012
+[ OK ] ov_SC04_021
+[ OK ] ov_SC04_016
+[ OK ] ov_SC04_015
+[ OK ] ov_SC04_020
+[ OK ] ov_SC05_002
+[ OK ] ov_SC04_011
+[ OK ] ov_SC05_003
+[ OK ] ov_SC05_001
+[ OK ] ov_SC05_005
+[ OK ] ov_SC05_006
+[ OK ] ov_SC05_004
+[ OK ] ov_SC05_007
+[ OK ] ov_SC05_008
+[ OK ] ov_SC05_009
+[ OK ] ov_SC05_010
+[ OK ] ov_SC05_011
+[ OK ] ov_SC05_019
+[ OK ] ov_SC05_018
+[ OK ] ov_SC06_014
+[ OK ] ov_SC06_008
+[ OK ] ov_SC06_013
+[ OK ] ov_SC06_015
+[ OK ] ov_SC06_010
+[ OK ] ov_SC06_011
+[ OK ] ov_SC06_006
+[ OK ] ov_SC06_016
+[ OK ] ov_SC05_017
+[ OK ] ov_SC06_020
+[ OK ] ov_SC06_022
+[ OK ] ov_SC06_018
+[ OK ] ov_SC06_024
+[ OK ] ov_SC06_025
+[ OK ] ov_SC06_027
+[ OK ] md_MAIN_013
+[ OK ] ov_SC07_009
+[ OK ] ov_SC07_008
+[ OK ] md_MAIN_014
+[ OK ] ov_SC07_001
+[ OK ] md_MAIN_015
+[ OK ] md_MAIN_016
+[ OK ] md_MAIN_017
+[ OK ] ov_SC06_030
+[ OK ] md_MAIN_018
+[ OK ] md_MAIN_019
+[ OK ] ov_SC07_002
+[ OK ] md_MAIN_020
+[ OK ] md_MAIN_021
+[ OK ] md_MAIN_022
+[ OK ] md_MAIN_023
+[ OK ] md_MAIN_024
+[ OK ] md_MAIN_025
+[ OK ] md_MAIN_027
+[ OK ] md_MAIN_026
+[ OK ] md_MAIN_028
+[ OK ] md_MAIN_029
+[ OK ] md_MAIN_030
+[ OK ] ov_SC06_029
+[ OK ] md_MAIN_033
+[ OK ] md_MAIN_032
+[ OK ] md_MAIN_031
+[ OK ] md_MAIN_035
+[ OK ] md_MAIN_034
+[ OK ] ov_SC07_010
+[ OK ] ov_SC07_007
+[ OK ] md_MAIN_037
+[ OK ] md_MAIN_036
+[ OK ] md_MAIN_039
+[ OK ] md_MAIN_038
+[ OK ] md_MAIN_040
+[ OK ] md_MAIN_042
+[ OK ] md_MAIN_041
+[ OK ] md_MAIN_043
+[ OK ] md_MAIN_045
+[ OK ] md_MAIN_044
+[ OK ] ov_SC07_006
+[ OK ] md_MAIN_046
+[ OK ] md_MAIN_008
+[ OK ] md_MAIN_001
+[ OK ] md_MAIN_047
+[ OK ] ov_MAIN_012
+[ OK ] md_MAIN_011
+[ OK ] md_SC03_073
+[ OK ] md_SC03_074
+[ OK ] md_SC03_075
+[ OK ] md_SC03_078
+[ OK ] md_SC03_079
+[ OK ] ov_SC07_011
+[ OK ] ov_SC06_033
+[ OK ] ov_SC06_032
+[ OK ] md_SC03_132
+[ OK ] md_SC03_077
+[ OK ] md_SC03_076
+[ OK ] md_SC03_133
+[ OK ] md_SC07_003
+[ OK ] md_SC03_134
+[ OK ] md_SC03_137
+[ OK ] md_SC03_138
+[ OK ] md_SC04_024
+[ OK ] md_SC04_025
+[ OK ] md_SC03_136
+[ OK ] md_SC04_026
+[ OK ] md_SC03_135
+[ OK ] md_MAIN_003
+[ OK ] md_SC04_029
+[ OK ] md_SC04_030
+[ OK ] md_SC05_023
+[ OK ] md_SC04_028
+[ OK ] md_SC05_024
+[ OK ] md_SC05_025
+[ OK ] md_SC04_027
+[ OK ] md_SC05_028
+[ OK ] md_SC05_029
+[ OK ] md_MAIN_009
+[ OK ] md_MAIN_007
+[ OK ] md_SC05_027
+[ OK ] md_SC02_009
+[ OK ] md_SC03_053
+[ OK ] md_SC03_054
+[ OK ] md_SC03_056
+[ OK ] md_SC05_026
+[ OK ] md_SC07_004
+[ OK ] ov_SC02_037
+[ OK ] ov_SC03_107
+check-all: 218 passed, 0 failed of 218
+wall=84.96 s
+exit=0
diff --git a/.run/P37/restruct/apply_t4_sig3.log b/.run/P37/restruct/apply_t4_sig3.log
new file mode 100644
index 0000000000..5680219e87
--- /dev/null
+++ b/.run/P37/restruct/apply_t4_sig3.log
@@ -0,0 +1,3 @@
+18:12:07 signature func_80035210: `s32 func_80035210(s32 a0, s32 a1)` — 1 definition(s) in ['src/800_b_2.c'], 0 declarations in 0 other files
+18:12:07 signature func_80035210: IDENTICAL on every recipe (1 objects, 0.2 s) — 1 files written
+18:12:07 restruct: signature func_80035210 — IDENTICAL · 1 files written
diff --git a/.run/P37/restruct/calibrate_t4_sig3.log b/.run/P37/restruct/calibrate_t4_sig3.log
new file mode 100644
index 0000000000..7ea4e53062
--- /dev/null
+++ b/.run/P37/restruct/calibrate_t4_sig3.log
@@ -0,0 +1,5 @@
+delever_oracle --calibrate main md_SC07_004 ov_SC03_015 ov_SC04_011: 146/146 objects byte-identical untouched; twin checks 32 (0 mismatch); positive control DIFFERS on build/src/800.o; 2.1 s — OK
+   main           85/85 identical, mean 0.085 s per object
+   md_SC07_004    1/1 identical, mean 0.542 s per object
+   ov_SC03_015    32/32 identical, mean 0.156 s per object
+   ov_SC04_011    28/28 identical, mean 0.148 s per object
diff --git a/.run/P37/restruct/cycle_t4sig.log b/.run/P37/restruct/cycle_t4sig.log
index 0e409db5bb..921788178b 100644
--- a/.run/P37/restruct/cycle_t4sig.log
+++ b/.run/P37/restruct/cycle_t4sig.log
@@ -1,3 +1,5 @@
 log: t4_sig1
 cycle: t4_sig1 committed 623069579 — restruct: signature func_800385C0 — IDENTICAL · 2 files written | check-all: 218 passed, 0 failed of 218
 log: t4_sig2
+cycle: t4_sig2 committed 0366295e2 — restruct: signature func_80029D3C — COMPILE-ERROR · 0 files written | (no src change)
+log: t4_sig3
diff --git a/.run/P37/restruct/ledger.jsonl b/.run/P37/restruct/ledger.jsonl
index 3f4d3a71fe..67618c4098 100644
--- a/.run/P37/restruct/ledger.jsonl
+++ b/.run/P37/restruct/ledger.jsonl
@@ -143653,3 +143653,4 @@
 {"ts": "2026-09-12 18:11:14", "label": "t4_sig2", "rung": "D", "calib": {"head": "623069579", "stamp": "e34b6679685f"}, "tu": "src/shared/ov/func_80151780.h", "unit": "def:func_80029D3C", "callee": "func_80029D3C", "signature": "s32 func_80029D3C(s32 n)", "definition": false, "verdict": "REFUSED", "err": "src/ov_SC07_002/ov_SC07_002_jr_8017C8D0.c:8778: too few arguments to function `func_80029D3C'\nsrc/ov_SC07_002/ov_SC07_002_jr_8017C8D0.c: At top level:\nsrc/ov_SC07_002/ov_SC07_002_jr_8017C8D0.c: At top", "nhash_before": null, "nhash_after": null, "sites": []}
 {"ts": "2026-09-12 18:11:14", "label": "t4_sig2", "rung": "D", "calib": {"head": "623069579", "stamp": "e34b6679685f"}, "tu": "src/shared/ov/func_801808C4__088fcd06.h", "unit": "def:func_80029D3C", "callee": "func_80029D3C", "signature": "s32 func_80029D3C(s32 n)", "definition": false, "verdict": "REFUSED", "err": "src/ov_SC07_002/ov_SC07_002_jr_8017C8D0.c:8778: too few arguments to function `func_80029D3C'\nsrc/ov_SC07_002/ov_SC07_002_jr_8017C8D0.c: At top level:\nsrc/ov_SC07_002/ov_SC07_002_jr_8017C8D0.c: At top", "nhash_before": null, "nhash_after": null, "sites": []}
 {"ts": "2026-09-12 18:11:14", "label": "t4_sig2", "rung": "D", "calib": {"head": "623069579", "stamp": "e34b6679685f"}, "tu": "src/shared/ov/func_80181538__27797037.h", "unit": "def:func_80029D3C", "callee": "func_80029D3C", "signature": "s32 func_80029D3C(s32 n)", "definition": false, "verdict": "REFUSED", "err": "src/ov_SC07_002/ov_SC07_002_jr_8017C8D0.c:8778: too few arguments to function `func_80029D3C'\nsrc/ov_SC07_002/ov_SC07_002_jr_8017C8D0.c: At top level:\nsrc/ov_SC07_002/ov_SC07_002_jr_8017C8D0.c: At top", "nhash_before": null, "nhash_after": null, "sites": []}
+{"ts": "2026-09-12 18:12:07", "label": "t4_sig3", "rung": "D", "calib": {"head": "0366295e2", "stamp": "e34b6679685f"}, "tu": "src/800_b_2.c", "unit": "def:func_80035210", "callee": "func_80035210", "signature": "s32 func_80035210(s32 a0, s32 a1)", "definition": true, "verdict": "DECL-CANON", "err": "", "nhash_before": null, "nhash_after": null, "sites": []}
diff --git a/.run/P37/restruct/run_t4_sig3.log b/.run/P37/restruct/run_t4_sig3.log
new file mode 100644
index 0000000000..29b4098dde
--- /dev/null
+++ b/.run/P37/restruct/run_t4_sig3.log
@@ -0,0 +1,5 @@
+18:12:07 signature func_80035210: `s32 func_80035210(s32 a0, s32 a1)` — 1 definition(s) in ['src/800_b_2.c'], 0 declarations in 0 other files
+18:12:07 signature func_80035210: IDENTICAL on every recipe (1 objects, 0.2 s) — 1 files written
+18:12:07 restruct: signature func_80035210 — IDENTICAL · 1 files written
+t4_sig3 wall=41.08 s
+exit=0
diff --git a/.run/P37/restruct/snapshot_t4_sig3.log b/.run/P37/restruct/snapshot_t4_sig3.log
new file mode 100644
index 0000000000..85baabad8f
--- /dev/null
+++ b/.run/P37/restruct/snapshot_t4_sig3.log
@@ -0,0 +1 @@
+delever_oracle --snapshot-baseline: 7428 object(s) under .run/P36/delever/baseline at 0366295e2; link inputs for 218/218 binaries under .run/P36/delever/baseline/_link (links.json)
diff --git a/phase-ends/CURRENT_PHASE.md b/phase-ends/CURRENT_PHASE.md
index 76a0df1030..ad158fea3c 100644
--- a/phase-ends/CURRENT_PHASE.md
+++ b/phase-ends/CURRENT_PHASE.md
@@ -591,7 +591,9 @@ bucketed by what each bucket needs before any plan is proposed. **Candidates for
 
 - **2026-09-12 — T4 step (d) `t4_sig2`** (`restruct --apply --rung D --callee func_80029D3C --body $A/main__func_80029D3C/scratch/patch_signature.c`; `.run/P37/restruct/run_t4_sig2.log`): `restruct: signature func_80029D3C — COMPILE-ERROR · 0 files written` — (no src change) · cause: `signature func_80029D3C: COMPILE-ERROR src/ov_SC07_002/ov_SC07_002_jr_8017C8D0.c:8778: too few arguments to function `func_80029D3C'`.
 
-## 🛑 SESSION CHECKPOINT — S107 (2026-09-12, FINAL — written for a FRESH session at 84 % context; the session's last commit follows this): gate 1 APPROVED, **T0 ☑ T1 ☑ T2 ☑ T3 ☑ — T4 IN PROGRESS (☐)** — 🛑 **T4 NEXT: resume the declaration layer where the cycle stopped (below, §1 "T4 — where it stands and the exact next commands"); xHigh** | R22 `check-all: 218 passed, 0 failed of 218` at `f2b58011e` (every one of the 21 T4 commits carries its own) | HEAD after this commit is the checkpoint's commit; tree clean; nothing pushed after `79b2f6f15` (Drew pushes, R6) | last batch `t4_sig2` on 623069579: restruct: signature func_80029D3C — COMPILE-ERROR · 0 files written
+- **2026-09-12 — T4 step (d) `t4_sig3`** (`restruct --apply --rung D --callee func_80035210 --body $A/main__func_80035210/body.c`; `.run/P37/restruct/run_t4_sig3.log`): `restruct: signature func_80035210 — IDENTICAL · 1 files written` → R22 (`.run/P37/baseline/r22_t4_sig3.log`) **`check-all: 218 passed, 0 failed of 218`** (`wall=84.96 s`).
+
+## 🛑 SESSION CHECKPOINT — S107 (2026-09-12, FINAL — written for a FRESH session at 84 % context; the session's last commit follows this): gate 1 APPROVED, **T0 ☑ T1 ☑ T2 ☑ T3 ☑ — T4 IN PROGRESS (☐)** — 🛑 **T4 NEXT: resume the declaration layer where the cycle stopped (below, §1 "T4 — where it stands and the exact next commands"); xHigh** | R22 `check-all: 218 passed, 0 failed of 218` at `f2b58011e` (every one of the 21 T4 commits carries its own) | HEAD after this commit is the checkpoint's commit; tree clean; nothing pushed after `79b2f6f15` (Drew pushes, R6) | last batch `t4_sig3` on 0366295e2: restruct: signature func_80035210 — IDENTICAL · 1 files written
 
 **Replay this block into the chat at the next session start (R64); it is the ONLY in-phase context the next session inherits. Everything below
 is what S107 knew and the next session must not re-derive.** **The checkpoint procedure (every session end, Drew 2026-09-12):** bank the
diff --git a/src/800_b_2.c b/src/800_b_2.c
index 294b4a8f70..aa6351b67c 100644
--- a/src/800_b_2.c
+++ b/src/800_b_2.c
@@ -7414,13 +7414,12 @@ extern s32 D_80076218;
 extern void func_8003C498(s32);
 extern void SpuWrite(s32, s32);
 
-void func_80035210(s32 a0, s32 a1)
+s32 func_80035210(s32 a0, s32 a1)
 {
-    register s32 v1 __asm__("$3");  // !FAKE: pin $3 — NEEDED DIFFERS (P36 rung B tus9)
+    s32 ret;
 
-    v1 = D_80076218;
-    func_8003C498(v1);
-    SpuWrite(a0, a1);
-    v1 = D_80076218;
-    D_80076218 = v1 + a1;
+    func_8003C498(D_80076218);
+    ret = ((s32 (*)(s32, s32))SpuWrite)(a0, a1);
+    D_80076218 += a1;
+    return ret;
 }