Files
James Dansereau 73ea03734d PC port: phase 2 — D48 review: re-plan D43 as offline pre-conversion (Plan B)
- D48 finding in PCPortResearch.md §F: d43_convert.py does not emit bytes
  (layout+remap validation only); Plan B = Python emit pass -> data/pcmodels-<region>/
  RZ sidecars served via port-layer hw_address/rom_size table patch (no C
  converter); Plan A kept as fallback with corrected staging guard (D_N64+D_PC<=avail)
- Moved all 23 d43_*.py investigation scripts from gitignored build-pc/ to tracked
  tools_pc/ (spec is now versioned); d43_cover.py path ref updated; converter
  re-run from new location: ALL CLEAN
- HANDOFF.md rewritten as two-session prompt: Session A = independent review of
  Plan B (8 claims, each with falsification criterion -> finding D49), Session B =
  execute (emit pass + round-trip validator, romdata plumbing, one-line hook,
  pixel-assert soak); verified-facts converter spec preserved
- AGENTS.md phase status updated to D48 re-plan
2026-08-22 18:43:04 -04:00

89 lines
3.1 KiB
Python

#!/usr/bin/env python3
"""Dump opcode + words for every seg-5 w1 slot in model GDLs, grouped by opcode."""
import csv, struct, zlib, os, re
from collections import Counter, defaultdict
ROM = open('data/ge007.ntsc-final.z64','rb').read()
rows = list(csv.reader(open(r"scripts/filelist.u.csv")))
hdrfiles = set()
for root, dirs, files in os.walk("assets"):
for fn in files:
if fn.lower().endswith("modelfileheader.inc.c"):
hdrfiles.add(os.path.join(root, fn))
nsnt = {}
for f in sorted(hdrfiles):
for line in open(f):
m = re.search(r"MODELFILEHEADER\((.*)\)\s*;?\s*$", line)
if not m: continue
a = [x.strip() for x in m.group(1).split(",")]
if len(a) < 9: continue
try: nsnt[a[0]] = (int(a[4], 0), int(a[8], 0))
except ValueError: pass
MASK = 0xFFFFFF
def be32o(b,o): return struct.unpack_from(">I",b,o)[0] & MASK
def be32r(b,o): return struct.unpack_from(">I",b,o)[0]
by_op = defaultdict(Counter) # opcode -> Counter of w1 values (seg5 only)
inrange = Counter(); outrange = Counter()
samples = defaultdict(list)
for r in rows:
if len(r) < 3 or not r[2]: continue
base = r[2].rsplit("/",1)[-1]
if base.endswith(".bin"): base = base[:-4]
if not (base[0] in "CGP" and base.endswith("Z") and "_stan" not in base): continue
key=None
for cand in (base, base[1:], base[:-1], base[1:-1]):
if cand in nsnt: key=cand; break
if not key: continue
NS,NT = nsnt[key]
try: addr,size=int(r[0]),int(r[1])
except ValueError: continue
try: src=zlib.decompress(ROM[addr:addr+size][2:],-15)
except Exception: continue
D=len(src); R0=4*NS+12*NT
seen=set(); stack=[R0]; gdls=[]
while stack:
o=stack.pop()
if o in seen or o>=D: continue
seen.add(o)
op=struct.unpack_from(">H",src,o)[0]&0xff
data=be32o(src,o+4)
child=be32o(src,o+0x14); nxt=be32o(src,o+0xC)
if op==8:
a=be32o(src,data+8)
if a: stack.append(a)
elif op==18:
c=be32o(src,data)
if c: stack.append(c)
else:
if child: stack.append(child)
if nxt: stack.append(nxt)
if op in (4,24):
p=be32o(src,data); s=be32o(src,data+4)
gdls += [x for x in (p,s) if x]
elif op==22:
p=be32o(src,data+8)
if p: gdls.append(p)
for g in sorted(set(gdls)):
o=g
while o+8<=D:
w0=be32r(src,o); c=w0>>24
if c==0xB8: break
w1=be32r(src,o+4)
if (w1>>28)==5:
off=w1&MASK
by_op[c][off]+=1
if off < D: inrange[c]+=1
else: outrange[c]+=1
if len(samples[c])<6 and off>=D: samples[c].append((base,hex(o),hex(w0),hex(w1)))
o+=8
print("opcode -> (in-range count, out-of-range count):")
for c in sorted(set(list(inrange)+list(outrange))):
print(f" 0x{c:02X}: in={inrange[c]} out={outrange[c]} distinct_vals={len(by_op[c])}")
print()
for c,v in samples.items():
print(f"samples opcode 0x{c:02X} (file, slot_off, w0, w1):")
for s in v: print(" ", s)