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1#!/usr/bin/env python3
2#
3# Copyright 2004 Matt Mackall <mpm@selenic.com>
4#
5# inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
6#
7# This software may be used and distributed according to the terms
8# of the GNU General Public License, incorporated herein by reference.
9
10import sys, os, re
11from signal import signal, SIGPIPE, SIG_DFL
12
13signal(SIGPIPE, SIG_DFL)
14
15if len(sys.argv) < 3:
16 sys.stderr.write("usage: %s [option] file1 file2\n" % sys.argv[0])
17 sys.stderr.write("The options are:\n")
18 sys.stderr.write("-c categorize output based on symbol type\n")
19 sys.stderr.write("-d Show delta of Data Section\n")
20 sys.stderr.write("-t Show delta of text Section\n")
21 sys.exit(-1)
22
23re_NUMBER = re.compile(r'\.[0-9]+')
24
25def getsizes(file, format):
26 sym = {}
27 with os.popen("nm --size-sort " + file) as f:
28 for line in f:
29 if line.startswith("\n") or ":" in line:
30 continue
31 size, type, name = line.split()
32 if type in format:
33 # strip generated symbols
34 if name.startswith("__mod_"): continue
35 if name.startswith("__se_sys"): continue
36 if name.startswith("__se_compat_sys"): continue
37 if name.startswith("__addressable_"): continue
38 if name == "linux_banner": continue
39 # statics and some other optimizations adds random .NUMBER
40 name = re_NUMBER.sub('', name)
41 sym[name] = sym.get(name, 0) + int(size, 16)
42 return sym
43
44def calc(oldfile, newfile, format):
45 old = getsizes(oldfile, format)
46 new = getsizes(newfile, format)
47 grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
48 delta, common = [], {}
49 otot, ntot = 0, 0
50
51 for a in old:
52 if a in new:
53 common[a] = 1
54
55 for name in old:
56 otot += old[name]
57 if name not in common:
58 remove += 1
59 down += old[name]
60 delta.append((-old[name], name))
61
62 for name in new:
63 ntot += new[name]
64 if name not in common:
65 add += 1
66 up += new[name]
67 delta.append((new[name], name))
68
69 for name in common:
70 d = new.get(name, 0) - old.get(name, 0)
71 if d>0: grow, up = grow+1, up+d
72 if d<0: shrink, down = shrink+1, down-d
73 delta.append((d, name))
74
75 delta.sort()
76 delta.reverse()
77 return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot
78
79def print_result(symboltype, symbolformat, argc):
80 grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \
81 calc(sys.argv[argc - 1], sys.argv[argc], symbolformat)
82
83 print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
84 (add, remove, grow, shrink, up, -down, up-down))
85 print("%-40s %7s %7s %+7s" % (symboltype, "old", "new", "delta"))
86 for d, n in delta:
87 if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
88
89 if otot:
90 percent = (ntot - otot) * 100.0 / otot
91 else:
92 percent = 0
93 print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent))
94
95if sys.argv[1] == "-c":
96 print_result("Function", "tT", 3)
97 print_result("Data", "dDbB", 3)
98 print_result("RO Data", "rR", 3)
99elif sys.argv[1] == "-d":
100 print_result("Data", "dDbBrR", 3)
101elif sys.argv[1] == "-t":
102 print_result("Function", "tT", 3)
103else:
104 print_result("Function", "tTdDbBrR", 2)
1#!/usr/bin/env python3
2#
3# Copyright 2004 Matt Mackall <mpm@selenic.com>
4#
5# inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
6#
7# This software may be used and distributed according to the terms
8# of the GNU General Public License, incorporated herein by reference.
9
10import sys, os, re, argparse
11from signal import signal, SIGPIPE, SIG_DFL
12
13signal(SIGPIPE, SIG_DFL)
14
15parser = argparse.ArgumentParser(description="Simple script used to compare the symbol sizes of 2 object files")
16group = parser.add_mutually_exclusive_group()
17group.add_argument('-c', help='categorize output based on symbol type', action='store_true')
18group.add_argument('-d', help='Show delta of Data Section', action='store_true')
19group.add_argument('-t', help='Show delta of text Section', action='store_true')
20parser.add_argument('-p', dest='prefix', help='Arch prefix for the tool being used. Useful in cross build scenarios')
21parser.add_argument('file1', help='First file to compare')
22parser.add_argument('file2', help='Second file to compare')
23
24args = parser.parse_args()
25
26re_NUMBER = re.compile(r'\.[0-9]+')
27
28def getsizes(file, format):
29 sym = {}
30 nm = "nm"
31 if args.prefix:
32 nm = "{}nm".format(args.prefix)
33
34 with os.popen("{} --size-sort {}".format(nm, file)) as f:
35 for line in f:
36 if line.startswith("\n") or ":" in line:
37 continue
38 size, type, name = line.split()
39 if type in format:
40 # strip generated symbols
41 if name.startswith("__mod_"): continue
42 if name.startswith("__se_sys"): continue
43 if name.startswith("__se_compat_sys"): continue
44 if name.startswith("__addressable_"): continue
45 if name == "linux_banner": continue
46 if name == "vermagic": continue
47 # statics and some other optimizations adds random .NUMBER
48 name = re_NUMBER.sub('', name)
49 sym[name] = sym.get(name, 0) + int(size, 16)
50 return sym
51
52def calc(oldfile, newfile, format):
53 old = getsizes(oldfile, format)
54 new = getsizes(newfile, format)
55 grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
56 delta, common = [], {}
57 otot, ntot = 0, 0
58
59 for a in old:
60 if a in new:
61 common[a] = 1
62
63 for name in old:
64 otot += old[name]
65 if name not in common:
66 remove += 1
67 down += old[name]
68 delta.append((-old[name], name))
69
70 for name in new:
71 ntot += new[name]
72 if name not in common:
73 add += 1
74 up += new[name]
75 delta.append((new[name], name))
76
77 for name in common:
78 d = new.get(name, 0) - old.get(name, 0)
79 if d>0: grow, up = grow+1, up+d
80 if d<0: shrink, down = shrink+1, down-d
81 delta.append((d, name))
82
83 delta.sort()
84 delta.reverse()
85 return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot
86
87def print_result(symboltype, symbolformat):
88 grow, shrink, add, remove, up, down, delta, old, new, otot, ntot = \
89 calc(args.file1, args.file2, symbolformat)
90
91 print("add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s (%s)" % \
92 (add, remove, grow, shrink, up, -down, up-down))
93 print("%-40s %7s %7s %+7s" % (symboltype, "old", "new", "delta"))
94 for d, n in delta:
95 if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
96
97 if otot:
98 percent = (ntot - otot) * 100.0 / otot
99 else:
100 percent = 0
101 print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent))
102
103if args.c:
104 print_result("Function", "tT")
105 print_result("Data", "dDbB")
106 print_result("RO Data", "rR")
107elif args.d:
108 print_result("Data", "dDbBrR")
109elif args.t:
110 print_result("Function", "tT")
111else:
112 print_result("Function", "tTdDbBrR")