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#!/usr/bin/python3.6
import argparse
from functools import total_ordering
@total_ordering
class GBSection:
ROM0 = 0
ROMX = 1
VRAM = 2
SRAM = 3
WRAM0 = 4
WRAMX = 5
__thresholds__ = (0x4000, 0x8000, 0xa000, 0xc000, 0xd000, 0xe000)
def __init__(self, addr):
self.ident = sum(x <= addr for x in self.__thresholds__)
@property
def start(self):
if self.ident == self.ROM0:
return 0
return self.__thresholds__[self.ident - 1]
@property
def end(self):
return self.__thresholds__[self.ident]
def __eq__(self, other):
return self.ident == other.ident
def __lt__(self, other):
return self.ident < other.ident
def read_sym(filename):
with open(filename) as fp:
for line in fp:
try:
line, *rest = line.split(';')
pointer, name = line.split()
bank, addr = (int(part, 16) for part in pointer.split(':'))
yield bank, addr, name
except ValueError:
continue
def sort_key(args):
bank, addr, name = args
return GBSection(addr), bank, addr, name
def main():
parser = argparse.ArgumentParser()
parser.add_argument('symfile')
args = parser.parse_args()
symbols = list(read_sym(args.symfile))
symbols.sort(key=sort_key)
with open(args.symfile, 'w') as fp:
for bank, addr, name in symbols:
print(f'{bank:02X}:{addr:04X}', name, file=fp)
if __name__ == '__main__':
main()
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