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sizes.py
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sizes.py
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#!/usr/bin/env python3
# Display the segment sizes used by an ELF
#
# Copyright (C) 2019 - Earle F. Philhower, III
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
from __future__ import print_function
import argparse
import os
import subprocess
import sys
def get_segment_hints():
hints = {}
hints['IROM'] = ' - code in flash (default or ICACHE_FLASH_ATTR)'
hints['IRAM'] = ' / 32768 - code in IRAM (ICACHE_RAM_ATTR, ISRs...)'
hints['DATA'] = ') - initialized variables (global, static) in RAM/HEAP'
hints['RODATA'] = ') / 81920 - constants (global, static) in RAM/HEAP'
hints['BSS'] = ') - zeroed variables (global, static) in RAM/HEAP'
return hints
def get_segment_sizes(elf, path):
sizes = {}
sizes['IROM'] = 0
sizes['IRAM'] = 0
sizes['DATA'] = 0
sizes['RODATA'] = 0
sizes['BSS'] = 0
p = subprocess.Popen([path + "/xtensa-lx106-elf-size", '-A', elf], stdout=subprocess.PIPE, universal_newlines=True )
lines = p.stdout.readlines()
for line in lines:
words = line.split()
if line.startswith('.irom0.text'):
sizes['IROM'] = sizes['IROM'] + int(words[1])
elif line.startswith('.text'): # Gets .text and .text1
sizes['IRAM'] = sizes['IRAM'] + int(words[1])
elif line.startswith('.data'): # Gets .text and .text1
sizes['DATA'] = sizes['DATA'] + int(words[1])
elif line.startswith('.rodata'): # Gets .text and .text1
sizes['RODATA'] = sizes['RODATA'] + int(words[1])
elif line.startswith('.bss'): # Gets .text and .text1
sizes['BSS'] = sizes['BSS'] + int(words[1])
return sizes
def main():
parser = argparse.ArgumentParser(description='Report the different segment sizes of a compiled ELF file')
parser.add_argument('-e', '--elf', action='store', required=True, help='Path to the Arduino sketch ELF')
parser.add_argument('-p', '--path', action='store', required=True, help='Path to Xtensa toolchain binaries')
args = parser.parse_args()
sizes = get_segment_sizes(args.elf, args.path)
hints = get_segment_hints()
sys.stderr.write("Executable segment sizes:" + os.linesep)
for k in sizes.keys():
sys.stderr.write("%-7s: %-5d %s %s" % (k, sizes[k], hints[k], os.linesep))
return 0
if __name__ == '__main__':
sys.exit(main())