def RealRepoint(rom: _io.BufferedReader, offsetTuples: [(int, int, str)]):
pointerList = []
pointerDict = {}
for tup in offsetTuples: # Format is (Double Pointer, New Pointer, Symbol)
offset = tup[0]
rom.seek(offset)
pointer = ExtractPointer(rom.read(4))
pointerList.append(pointer)
pointerDict[pointer] = (tup[1] + 0x08000000, tup[2])
offset = 0
offsetList = []
while offset < 0xFFFFFD:
if offset in IGNORED_OFFSETS:
offset += 4
continue
rom.seek(offset)
word = ExtractPointer(rom.read(4))
rom.seek(offset)
for pointer in pointerList:
if word == pointer:
offsetList.append((offset, pointerDict[pointer][1]))
rom.write(bytes(pointerDict[pointer][0].to_bytes(4, 'little')))
break
offset += 4
return offsetList
def extract_file_bitstream(self, file_object: _io.BufferedReader) -> str:
"""
Converts a file object into a string of 0's and 1's for easy processing down the road
:param file_object:
:return bitstream:
"""
bitstream = ""
while (byte := file_object.read(1)):
bitstream += "{0:08b}".format(int.from_bytes(byte,
byteorder='big'))
def _load_header_rest(
stream: _io.BufferedReader) -> typing.Tuple[typing.List[str], int]:
header_parts: typing.List[str] = []
offset: int = 0
while True:
block: bytes = stream.read(BLOCK_SIZE)
if not block:
break
header_parts.append(block)
if END_CARD in block:
break
offset = offset + BLOCK_SIZE
if not END_CARD in header_parts[-1]:
raise NotImplementedError(f'Invalid FITS file')
return header_parts, offset
def RamRepoint(rom: _io.BufferedReader, offsetTuples: [(int, int)]):
pointerList = []
pointerDict = {}
for tup in offsetTuples: # Format is (Old Pointer, New Pointer)
pointer = tup[0]
pointerList.append(pointer)
pointerDict[pointer] = tup[1]
offset = 0
while offset < 0xFFFFFD:
rom.seek(offset)
word = ExtractRamPointer(rom.read(4))
rom.seek(offset)
for pointer in pointerList:
if word == pointer:
rom.write(bytes(pointerDict[pointer].to_bytes(4, 'little')))
break
offset += 4
