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scripts: script to output symbol size changes between two binaries
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#!/usr/bin/env python | ||
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''' | ||
This script intends to provide a pretty symbol size diff between two binaries. | ||
AP_FLAKE8_CLEAN | ||
''' | ||
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import subprocess | ||
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def run_nm(file): | ||
"""Run nm on the specified file and return the output.""" | ||
result = subprocess.run(['arm-none-eabi-nm', '-S', '-C', '--size-sort', file], capture_output=True, text=True) | ||
if result.returncode != 0: | ||
raise Exception(f"Error running nm on {file}: {result.stderr}") | ||
return result.stdout | ||
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def parse_nm_output(output): | ||
"""Parse the nm output and return a dictionary of symbols and their sizes.""" | ||
symbols = {} | ||
for line in output.splitlines(): | ||
parts = line.split() | ||
if len(parts) >= 4: | ||
size = int(parts[1], 16) | ||
symbol = parts[3] | ||
symbols[symbol] = size | ||
return symbols | ||
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def compare_symbols(symbols1, symbols2): | ||
"""Compare the symbols between two dictionaries and return the size differences.""" | ||
diff = {} | ||
all_symbols = set(symbols1.keys()).union(symbols2.keys()) | ||
for symbol in all_symbols: | ||
size1 = symbols1.get(symbol, 0) | ||
size2 = symbols2.get(symbol, 0) | ||
if size1 != size2: | ||
diff[symbol] = (size1, size2, size2 - size1) | ||
return diff | ||
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def main(file1, file2): | ||
output1 = run_nm(file1) | ||
output2 = run_nm(file2) | ||
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symbols1 = parse_nm_output(output1) | ||
symbols2 = parse_nm_output(output2) | ||
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diff = compare_symbols(symbols1, symbols2) | ||
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print(f"Symbol size differences between {file1} and {file2}:") | ||
total = 0 | ||
for symbol, (size1, size2, change) in diff.items(): | ||
print("%4d %s %s -> %s" % (change, symbol, size1, size2)) | ||
total += change | ||
print(f"Total: {total}") | ||
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if __name__ == "__main__": | ||
import sys | ||
if len(sys.argv) != 3: | ||
print(f"Usage: {sys.argv[0]} <file1> <file2>") | ||
sys.exit(1) | ||
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file1 = sys.argv[1] | ||
file2 = sys.argv[2] | ||
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main(file1, file2) |