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Aetias
52 lines
1.3 KiB
Python
52 lines
1.3 KiB
Python
import hashlib
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import sys
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class Patch:
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def __init__(self, name: str, version: str, sha1: str, desc: str, offset: int, write: list[int]) -> None:
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self.name = name
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self.version = version
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self.sha1 = sha1
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self.desc = desc
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self.offset = offset
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self.write = write
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VERSION = '1.0'
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PATCHES = [
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Patch(
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'mwasmarm', '2.0/sp1p5', '448cb0c7f1ace4393e9a9562f819f7a9f049be83',
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'Fix 2-aligned Thumb BLX where ARM call target was off by 1',
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offset=0x1b45b, write=[0xc2]
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),
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]
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if len(sys.argv) != 2:
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print(f'patch_mwcc {VERSION}')
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print()
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print(f'Usage: {sys.argv[0]} <exe>')
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print(' <exe>\tPath to mwasmarm.exe')
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exit()
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filename = sys.argv[1]
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with open(filename, 'rb', buffering=0) as file:
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sha1 = hashlib.file_digest(file, 'sha1').hexdigest()
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file.seek(0, 2)
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length = file.tell()
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file.seek(0, 0)
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file_bytes = bytearray(file.read(length))
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num_patches = 0
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for patch in PATCHES:
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if sha1 == patch.sha1:
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num_patches += 1
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print(f'{patch.name} version {patch.version}')
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print(patch.desc)
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for i in range(len(patch.write)):
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file_bytes[patch.offset + i] = patch.write[i]
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print()
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with open(filename, 'wb') as file:
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file.write(file_bytes)
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print(f'Applied {num_patches} patch(es)')
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