mirror/mm
1
0
Fork 0
mirror of https://github.com/zeldaret/mm.git synced 2026-06-24 09:01:22 -04:00
Code Issues Packages Projects Releases Wiki Activity

Build tools rework (#1542)

Browse Source 
* yeet libyaz0

* replace elf2rom

* makeyar.py

* some cleanup

* Yeet unused tools

* format scripts

* Review

* review

* Rework checksummer.py to modify input file instead
This commit is contained in:
Anghelo Carvajal
2024-01-31 00:52:07 -03:00
committed by GitHub
parent 6fb4a07325
commit 2c600ddd3d
17 changed files with 290 additions and 1669 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/fixbaserom.py
+5 -61
View File
@@ -3,71 +3,14 @@
import hashlib, io, struct, sys
from os import path
from libyaz0 import decompress
import crunch64
import ipl3checksum
UNCOMPRESSED_SIZE = 0x2F00000
def as_word(b, off=0):
return struct.unpack(">I", b[off:off+4])[0]
def as_word_list(b):
return [i[0] for i in struct.iter_unpack(">I", b)]
def calc_crc(rom_data, cic_type):
start = 0x1000
end = 0x101000
unsigned_long = lambda i: i & 0xFFFFFFFF
rol = lambda i, b: unsigned_long(i << b) | (i >> (-b & 0x1F))
if cic_type == 6101 or cic_type == 6102:
seed = 0xF8CA4DDC
elif cic_type == 6103:
seed = 0xA3886759
elif cic_type == 6105:
seed = 0xDF26F436
elif cic_type == 6106:
seed = 0x1FEA617A
else:
assert False , f"Unknown cic type: {cic_type}"
t1 = t2 = t3 = t4 = t5 = t6 = seed
for pos in range(start, end, 4):
d = as_word(rom_data, pos)
r = rol(d, d & 0x1F)
t6d = unsigned_long(t6 + d)
if t6d < t6:
t4 = unsigned_long(t4 + 1)
t6 = t6d
t3 ^= d
t5 = unsigned_long(t5 + r)
if t2 > d:
t2 ^= r
else:
t2 ^= t6 ^ d
if cic_type == 6105:
t1 = unsigned_long(t1 + (as_word(rom_data, 0x0750 + (pos & 0xFF)) ^ d))
else:
t1 = unsigned_long(t1 + (t5 ^ d))
chksum = [0,0]
if cic_type == 6103:
chksum[0] = unsigned_long((t6 ^ t4) + t3)
chksum[1] = unsigned_long((t5 ^ t2) + t1)
elif cic_type == 6106:
chksum[0] = unsigned_long((t6 * t4) + t3)
chksum[1] = unsigned_long((t5 * t2) + t1)
else:
chksum[0] = t6 ^ t4 ^ t3
chksum[1] = t5 ^ t2 ^ t1
return struct.pack(">II", chksum[0], chksum[1])
def read_dmadata_entry(addr):
return as_word_list(fileContent[addr:addr+0x10])
@@ -87,7 +30,8 @@ def read_dmadata(start):
def update_crc(decompressed):
print("Recalculating crc...")
new_crc = calc_crc(decompressed.getbuffer(), 6105)
calculated_checksum = ipl3checksum.CICKind.CIC_X105.calculateChecksum(bytes(decompressed.getbuffer()))
new_crc = struct.pack(f">II", calculated_checksum[0], calculated_checksum[1])
decompressed.seek(0x10)
decompressed.write(new_crc)
@@ -106,7 +50,7 @@ def decompress_rom(dmadata_addr, dmadata):
if p_end == 0: # uncompressed
rom_segments.update({v_start : fileContent[p_start:p_start + v_end - v_start]})
else: # compressed
rom_segments.update({v_start : decompress(fileContent[p_start:p_end])})
rom_segments.update({v_start : crunch64.yaz0.decompress(fileContent[p_start:p_end])})
new_dmadata.extend(struct.pack(">IIII", v_start, v_end, v_start, 0))
# write rom segments to vaddrs