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112 lines
3.8 KiB
112 lines
3.8 KiB
#!/usr/bin/env python3 |
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# |
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# Copyright 2004 Matt Mackall <[email protected]> |
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# |
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# inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen |
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# |
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# This software may be used and distributed according to the terms |
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# of the GNU General Public License, incorporated herein by reference. |
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import sys, os, re, argparse |
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from signal import signal, SIGPIPE, SIG_DFL |
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signal(SIGPIPE, SIG_DFL) |
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parser = argparse.ArgumentParser(description="Simple script used to compare the symbol sizes of 2 object files") |
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group = parser.add_mutually_exclusive_group() |
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group.add_argument('-c', help='categorize output based on symbol type', action='store_true') |
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group.add_argument('-d', help='Show delta of Data Section', action='store_true') |
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group.add_argument('-t', help='Show delta of text Section', action='store_true') |
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parser.add_argument('-p', dest='prefix', help='Arch prefix for the tool being used. Useful in cross build scenarios') |
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parser.add_argument('file1', help='First file to compare') |
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parser.add_argument('file2', help='Second file to compare') |
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args = parser.parse_args() |
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re_NUMBER = re.compile(r'\.[0-9]+') |
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def getsizes(file, format): |
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sym = {} |
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nm = "nm" |
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if args.prefix: |
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nm = "{}nm".format(args.prefix) |
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with os.popen("{} --size-sort {}".format(nm, file)) as f: |
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for line in f: |
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if line.startswith("\n") or ":" in line: |
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continue |
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size, type, name = line.split() |
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if type in format: |
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# strip generated symbols |
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if name.startswith("__mod_"): continue |
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if name.startswith("__se_sys"): continue |
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if name.startswith("__se_compat_sys"): continue |
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if name.startswith("__addressable_"): continue |
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if name == "linux_banner": continue |
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if name == "vermagic": continue |
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# statics and some other optimizations adds random .NUMBER |
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name = re_NUMBER.sub('', name) |
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sym[name] = sym.get(name, 0) + int(size, 16) |
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return sym |
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def calc(oldfile, newfile, format): |
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old = getsizes(oldfile, format) |
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new = getsizes(newfile, format) |
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grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0 |
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delta, common = [], {} |
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otot, ntot = 0, 0 |
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for a in old: |
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if a in new: |
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common[a] = 1 |
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for name in old: |
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otot += old[name] |
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if name not in common: |
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remove += 1 |
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down += old[name] |
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delta.append((-old[name], name)) |
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for name in new: |
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ntot += new[name] |
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if name not in common: |
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add += 1 |
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up += new[name] |
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delta.append((new[name], name)) |
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for name in common: |
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d = new.get(name, 0) - old.get(name, 0) |
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if d>0: grow, up = grow+1, up+d |
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if d<0: shrink, down = shrink+1, down-d |
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delta.append((d, name)) |
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delta.sort() |
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delta.reverse() |
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return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot |
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def print_result(symboltype, symbolformat): |
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grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \ |
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calc(args.file1, args.file2, symbolformat) |
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print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \ |
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(add, remove, grow, shrink, up, -down, up-down)) |
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print("%-40s %7s %7s %+7s" % (symboltype, "old", "new", "delta")) |
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for d, n in delta: |
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if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)) |
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if otot: |
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percent = (ntot - otot) * 100.0 / otot |
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else: |
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percent = 0 |
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print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent)) |
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if args.c: |
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print_result("Function", "tT") |
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print_result("Data", "dDbB") |
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print_result("RO Data", "rR") |
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elif args.d: |
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print_result("Data", "dDbBrR") |
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elif args.t: |
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print_result("Function", "tT") |
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else: |
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print_result("Function", "tTdDbBrR")
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