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Quick python script to print the sizes of the text and data sections.

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Travis Goodspeed 2017-10-06 18:11:50 -04:00
parent b49d912fb6
commit 8dd1bcff4a
2 changed files with 45 additions and 0 deletions
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43
bin/printsizes.py Executable file
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@ -0,0 +1,43 @@
#!/usr/bin/python2
## Quick little pyelftools script to test the size of a CC430F6137
## firmware image, warning the user if it looks too big.
from __future__ import print_function
import sys
from elftools.elf.elffile import ELFFile
from elftools.elf.sections import SymbolTableSection
def process_file(filename):
with open(filename, 'rb') as f:
printsizes(f)
def printsizes(stream):
elffile = ELFFile(stream);
text=elffile.get_section_by_name('.text');
textlen=len(text.data());
codeperc=textlen*100.0/32768;
print("%d bytes of .text (%d %%)" % (textlen,codeperc));
if codeperc>80:
print("WARNING: %d percent of code is used!"%codeperc);
data=elffile.get_section_by_name('.data');
datalen=len(data.data());
bss=elffile.get_section_by_name('.bss');
bsslen=len(bss.data());
dataperc=(datalen+bsslen)*100.0/8192;
print("%d bytes of .data, %d bytes of .bss (%d %%)"
%(datalen,bsslen,dataperc));
if dataperc>80:
print("WARNING: %d percent of code is used!"%codeperc);
if __name__ == '__main__':
for filename in sys.argv[1:]:
process_file(filename)

2
firmware/Makefile
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@ -15,6 +15,8 @@ gittag.h:
echo "#define GITTAG" 0x`git describe --always` >gittag.h
goodwatch: $(modules) $(apps) *.h
$(CC) -o goodwatch $(modules) $(apps)
../bin/printsizes.py goodwatch || echo "Please install python-pyelftools."
goodwatch.hex: goodwatch
msp430-objcopy -O ihex goodwatch goodwatch.hex