#!/usr/bin/env python3
java.lang.NullPointerException # Copyright 2004 Matt Mackall <mpm@selenic.com>
java.lang.NullPointerException # inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
java.lang.NullPointerException # This software may be used and distributed according to the terms # of the GNU General Public License, incorporated herein by reference.
import sys, os, re, argparse
from signal import signal, SIGPIPE, SIG_DFL
signal(SIGPIPE, SIG_DFL)
parser = argparse.ArgumentParser(description="Simple script used to compare the symbol sizes of 2 object files")
group = parser.add_mutually_exclusive_group()
group.add_argument('-c', help='categorize output based on symbol type', action='store_true')
group.add_argument('-d', help='Show delta of Data Section', action='store_true')
group.add_argument('-t', help='Show delta of text Section', action='store_true')
parser.add_argument('-p', dest='prefix', help='Arch prefix for the tool being used. Useful in cross build scenarios')
parser.add_argument('file1', help='First file to compare')
parser.add_argument('file2', help='Second file to compare')
with os.popen("{} --size-sort {}".format(nm, file)) as f: for line in f: if line.startswith("\n") or":" in line: continue
size, type, name = line.split() if type in format: # strip generated symbols if name.startswith("__mod_"): continue if name.startswith("__se_sys"): continue if name.startswith("__se_compat_sys"): continue if name.startswith("__addressable_"): continue if name == "linux_banner": continue if name == "vermagic": continue # statics and some other optimizations adds random .NUMBER
name = re_NUMBER.sub('', name)
sym[name] = sym.get(name, 0) + int(size, 16) return sym
def calc(oldfile, newfile, format):
old = getsizes(oldfile, format) new = getsizes(newfile, format)
grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
delta, common = [], {}
otot, ntot = 0, 0
for a in old: if a in new:
common[a] = 1
for name in old:
otot += old[name] if name not in common:
remove += 1
down += old[name]
delta.append((-old[name], name))
for name in new:
ntot += new[name] if name not in common:
add += 1
up += new[name]
delta.append((new[name], name))
for name in common:
d = new.get(name, 0) - old.get(name, 0) if d>0: grow, up = grow+1, up+d if d<0: shrink, down = shrink+1, down-d
delta.append((d, name))
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