mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-14 16:06:56 +00:00
37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
#!/usr/bin/env python
|
|
import sys, lz4
|
|
from struct import unpack as up
|
|
|
|
def lz4_compress(data):
|
|
try:
|
|
import lz4.block as block
|
|
except ImportError:
|
|
block = lz4.LZ4_compress
|
|
return block.compress(data, 'high_compression', store_size=False)
|
|
|
|
def split_binary(data):
|
|
A, B, START, BOOT_CODE_START, BOOT_CODE_END, PROGRAM_START, C, D = up('<QQQQQQQQ', data[:0x40])
|
|
assert A == 0xAAAAAAAAAAAAAAAA
|
|
assert B == 0xBBBBBBBBBBBBBBBB
|
|
assert C == 0xCCCCCCCCCCCCCCCC
|
|
assert D == 0xDDDDDDDDDDDDDDDD
|
|
data = data[0x40:]
|
|
|
|
boot_code = data[BOOT_CODE_START - START:BOOT_CODE_END - BOOT_CODE_START]
|
|
program = data[PROGRAM_START - START:]
|
|
return [('boot_code.lz4', lz4_compress(boot_code)), ('program.lz4', lz4_compress(program))]
|
|
|
|
def main(argc, argv):
|
|
if argc != 3:
|
|
print('Usage: %s in outdir' % argv[0])
|
|
return 1
|
|
with open(argv[1], 'rb') as f:
|
|
data = f.read()
|
|
assert len(data) >= 0x40
|
|
for (fn, fdata) in split_binary(data):
|
|
with open('%s/%s' % (argv[2], fn), 'wb') as f:
|
|
f.write(fdata)
|
|
return 0
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main(len(sys.argv), sys.argv))
|