66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
#!/usr/bin/env python3
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import subprocess
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import os
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import re
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import datetime
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def cpp_preprocess(input_path, cpp='cpp'):
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return subprocess.check_output([cpp, '-P', input_path]).decode()
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def gen_isr_header(f, cpp='cpp'):
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stripped_code = cpp_preprocess(args.input, args.use_cpp)
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armed = False
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for line in stripped_code.splitlines():
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line = line.strip()
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if armed:
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if not line.startswith('.word'):
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break
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word, value = line.split()
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assert word == '.word'
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if value == '0':
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yield None
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else:
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yield value
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else:
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if line.startswith('g_pfnVectors:'):
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armed = True
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else:
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raise ValueError('Cannot find interrupt vector definition!')
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if __name__ == '__main__':
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import argparse
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parser = argparse.ArgumentParser()
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parser.add_argument('--use-cpp', type=str, default=os.getenv('CPP', 'cpp'), help='cpp (C preprocessor) executable to use')
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parser.add_argument('-g', '--generate-include-guards', action='store_true', help='Whether to generate include guards')
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parser.add_argument('input', help='Input stm32****_startup.s file')
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args = parser.parse_args()
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print('/* AUTOGENERATED FILE! DO NOT MODIFY! */')
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print(f'/* Generated {datetime.datetime.now()} from {args.input} */')
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if args.generate_include_guards:
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include_guard_id = '__ISR_HEADER_' + re.sub('[^A-Za-z0-9]', '_', args.input.split('/')[-1]) + '__'
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print(f'#ifndef {include_guard_id}')
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print(f'#define {include_guard_id}')
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print()
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for i, handler_name in enumerate(gen_isr_header(args.input, args.use_cpp)):
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if handler_name is None:
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print(f'/* IRQ {i} is undefined for this part. */')
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else:
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print(f'void {handler_name}(void); {" " * (30-len(handler_name))} /* {i:> 3} */')
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print()
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print(f'#define NUM_IRQs {i+1}')
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print('extern uint32_t g_pfnVectors[NUM_IRQs];')
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print('#define isr_vector g_pfnVectors')
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print()
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if args.generate_include_guards:
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print(f'#endif /* {include_guard_id} */')
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