Files
ph/tools/gen_externs.py
T
2024-04-06 10:59:41 +02:00

133 lines
4.1 KiB
Python

import argparse
import os
from pathlib import Path
import platform
import subprocess
import sys
import tempfile
def eprint(*args, **kwargs):
print(*args, file=sys.stderr, **kwargs)
parser = argparse.ArgumentParser(description='Generates .inc files with external symbols used by Assembly code')
parser.add_argument('files', nargs='+', help='.s file to generate .inc file for')
args = parser.parse_args()
tools_dir = Path(os.path.dirname(os.path.realpath(__file__)))
as_path = tools_dir / 'mwccarm' / '2.0' / 'sp1p5' / 'mwasmarm.exe'
root_dir = tools_dir.parent
asm_dir = root_dir / 'asm'
MSG_UNKNOWN_IDENTIFIER = 'Unknown identifier,'
MSG_DUPLICATE_DECLARATION = 'Incompatible duplicate declaration of'
if platform.system() == 'Windows': as_cmd = [str(as_path)]
else: as_cmd = ['wine', str(as_path)]
as_cmd.extend([
'-nolink',
'-proc', 'arm5te',
'-msgstyle', 'gcc',
'-DEUR', '-DUSA',
f'-I{asm_dir}',
])
def get_unknown_symbols(file: Path):
with tempfile.NamedTemporaryFile(delete=True) as tmp_obj_file:
# Run assembler
cmd = as_cmd.copy()
cmd.extend(['-o', tmp_obj_file.name])
cmd.append(str(file))
try:
output = subprocess.check_output(cmd, stderr=subprocess.DEVNULL)
output = output.decode()
except subprocess.CalledProcessError as e:
output = e.stdout.decode()
# Get unknown identifiers
lines = output.splitlines()
symbol = ''
symbols: set[str] = set()
skip = False
for line in lines:
# print(line)
if ':' not in line: continue
line = line.rsplit(':', 1)[-1].strip()
if line.startswith(MSG_DUPLICATE_DECLARATION):
symbols.add(symbol)
skip = True
elif line.startswith(MSG_UNKNOWN_IDENTIFIER):
symbols.add(symbol)
skip = False
symbol = line[len(MSG_UNKNOWN_IDENTIFIER):].strip()
elif not skip:
symbol += line.strip()
symbols.add(symbol)
if '' in symbols: symbols.remove('')
if len(symbols) == 0:
return []
return sorted(list(symbols))
files_updated = 0
inc_files_created = 0
def generate_externs(file: Path):
global inc_files_created
with tempfile.NamedTemporaryFile('w', suffix='.s', delete=True, encoding='Shift-JIS') as tmp_asm_file:
file_name = file.name.rsplit('.', 1)[0]
inc_file_name = f'{file_name}.inc'
inc_path = file.parent / inc_file_name
# Comment out '.include ".../my_file.inc"
with open(file, 'r', encoding='Shift-JIS') as f:
contents = f.read()
lines = contents.splitlines()
has_inc_file = False
for i in range(len(lines)):
if not lines[i].strip().startswith('.include'): continue
if inc_file_name not in lines[i]: continue
lines[i] = f';{lines[i]}'
has_inc_file = True
break
# Get unknown symbols
for line in lines:
tmp_asm_file.write(line)
tmp_asm_file.write('\n')
tmp_asm_file.flush()
symbols = get_unknown_symbols(tmp_asm_file.name)
# Create inc file
with open(inc_path, 'w') as f:
f.write('#pragma once\n')
for i, symbol in enumerate(symbols):
# Skip duplicates
if symbol in symbols[:i]: continue
f.write(f'.extern {symbol}\n')
# Add .include
if not has_inc_file:
relative_inc_path = inc_path.relative_to('asm/')
lines.insert(0, f' .include "{relative_inc_path}"')
with open(file, 'w', encoding='Shift-JIS') as f:
for line in lines:
f.write(line)
f.write('\n')
inc_files_created += 1
for file in args.files:
if not file.endswith('.s'): continue
path = Path(file)
if len(args.files) > 1:
print(path)
generate_externs(path)
files_updated += 1
if len(args.files) > 1:
print(f"Updated {files_updated} file(s)")
print(f"Created {inc_files_created} .inc file(s)")