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#!/usr/bin/env python
from __future__ import print_function
from sys import argv, stderr, exit
section_list = [
{'end': 0x4000, 'invalid': False, 'name': "ROM0", 'banked': False},
{'end': 0x8000, 'invalid': False, 'name': "ROMX", 'banked': True},
{'end': 0xA000, 'invalid': False, 'name': "VRAM", 'banked': True},
{'end': 0xC000, 'invalid': False, 'name': "SRAM", 'banked': True},
{'end': 0xD000, 'invalid': False, 'name': "WRAM0", 'banked': False},
{'end': 0xE000, 'invalid': False, 'name': "WRAMX", 'banked': True},
{'end': 0xFE00, 'invalid': True , 'name': "Echo RAM"},
{'end': 0xFEA0, 'invalid': False, 'name': "OAM", 'banked': False},
{'end': 0xFF80, 'invalid': True , 'name': "FEXX / IO"},
{'end': 0xFFFF, 'invalid': False, 'name': "HRAM", 'banked': False}
]
argv_id = 1
file_list = []
options = []
while argv_id < len(argv):
arg = argv[argv_id]
if arg[0] != '-':
file_list.append(arg)
argv_id += 1
continue
# An empty '--' stops parsing arguments
if arg == '--':
argv_id += 1
break
if arg[1] == '-':
options.append(option[2:])
elif arg[1] != '-':
for option in arg[1:]:
options.append(option)
argv_id += 1
# Add remaining files to the list
for arg in argv[argv_id:]:
file_list.append(arg)
if 'w' in options or 'd' in options:
section_list[4]['end'] = 0xE000
if 't' in options:
section_list[0]['end'] = 0x8000
for file_name in file_list:
for line in open(file_name, "rt"):
# Strip out the comment
line = line.split(";")[0].strip()
if not line:
continue
# Read the address
try:
address, symbol = line.split()
bank, pointer = address.split(":")
bank = int(bank, 16)
pointer = int(pointer, 16)
except:
print("Error: Cannot parse line: %s" % line, file=stderr)
exit(1)
section = None
for section_type in section_list:
if pointer < section_type['end']:
if section_type['invalid']:
print("Warning: cannot shim '%s' in section type '%s'" % (symbol, section_type['name']), file=stderr)
section = False
else:
section = section_type['name']
if not section_type['banked']:
bank = None
break
else:
# Didn't find a section
print("Unknown section for '%s'" % line, file=stderr)
continue
if not section:
# Found section, but cannot shim it
continue
print("SECTION \"Shim for %s\", %s[$%04X]" % (symbol, section, pointer), end='')
if bank:
print(", BANK[$%04X]" % bank, end='')
print("\n%s::\n\n" % symbol)
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