112 lines
3.8 KiB
Python
Executable File
112 lines
3.8 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
#
|
|
# Copyright 2004 Matt Mackall <mpm@selenic.com>
|
|
#
|
|
# inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
|
|
#
|
|
# 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')
|
|
|
|
args = parser.parse_args()
|
|
|
|
re_NUMBER = re.compile(r'\.[0-9]+')
|
|
|
|
def getsizes(file, format):
|
|
sym = {}
|
|
nm = "nm"
|
|
if args.prefix:
|
|
nm = "{}nm".format(args.prefix)
|
|
|
|
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))
|
|
|
|
delta.sort(reverse=True)
|
|
return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot
|
|
|
|
def print_result(symboltype, symbolformat):
|
|
grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \
|
|
calc(args.file1, args.file2, symbolformat)
|
|
|
|
print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
|
|
(add, remove, grow, shrink, up, -down, up-down))
|
|
print("%-40s %7s %7s %+7s" % (symboltype, "old", "new", "delta"))
|
|
for d, n in delta:
|
|
if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
|
|
|
|
if otot:
|
|
percent = (ntot - otot) * 100.0 / otot
|
|
else:
|
|
percent = 0
|
|
print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent))
|
|
|
|
if args.c:
|
|
print_result("Function", "tTwW")
|
|
print_result("Data", "dDbBvV")
|
|
print_result("RO Data", "rR")
|
|
elif args.d:
|
|
print_result("Data", "dDbBrRvV")
|
|
elif args.t:
|
|
print_result("Function", "tTwW")
|
|
else:
|
|
print_result("Function", "tTdDbBrRvVwW")
|