3 # Copyright 2004 Matt Mackall <mpm@selenic.com>
5 # Inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
7 # This software may be used and distributed according to the terms
8 # of the GNU General Public License, incorporated herein by reference.
13 sys.stderr.write("usage: %s [-t] file1 file2\n" % sys.argv[0])
17 flag_timing, dashes = (False, False)
19 for f in sys.argv[1:]:
21 if f == "--": # sym_args
24 if f == "-t": # timings
27 if not os.path.exists(f):
28 sys.stderr.write("Error: file '%s' does not exist\n" % f)
36 if f1 is None or f2 is None:
39 sym_args = " ".join(sys.argv[3 + flag_timing + dashes:])
41 sym, alias, lut = {}, {}, {}
42 #dynsym_filter = re.compile("^\d+:\s+[\dA-Fa-f]+\s+\d+\s+\w+\s+\w+\s+\w+\s+\w+\s+\w+$")
43 for l in os.popen("readelf -W -s %s %s" % (sym_args, file)).readlines():
46 if not (len(l) and l[0].isdigit() and len(l.split()) == 8):
48 num, value, size, typ, bind, vis, ndx, name = l.split()
49 if ndx == "UND": continue # skip undefined
50 if typ in ["SECTION", "FILES"]: continue # skip sections and files
53 # match = dynsym_filter.match(l)
54 # if not match: continue
55 # x, value, size, typ, bind, x, ndx, name = l.split()
56 # if ndx == "UND": continue # skip undefined
57 # if typ in ["SECTION", "FILES"]: continue # skip sections and files
58 if "." in name: name = "static." + name.split(".")[0]
59 value = int(value, 16)
61 if vis != "DEFAULT" and bind != "GLOBAL": # see if it is an alias
62 alias[(value, size)] = {"name" : name}
64 sym[name] = {"addr" : value, "size": size}
65 lut[(value, size)] = 0
66 for addr, sz in iter(alias.keys()):
67 # If the non-GLOBAL sym has an implementation elsewhere then
68 # it's an alias, disregard it.
69 if not (addr, sz) in lut:
70 # If this non-GLOBAL sym does not have an implementation at
71 # another address, then treat it as a normal symbol.
72 sym[alias[(addr, sz)]["name"]] = {"addr" : addr, "size": sz}
73 for l in os.popen("readelf -W -S " + file).readlines():
76 # Should take these into account too!
77 #if x[1] not in [".text", ".rodata", ".symtab", ".strtab"]: continue
78 if x[1] not in [".rodata"]: continue
79 sym[x[1]] = {"addr" : int(x[3], 16), "size" : int(x[5], 16)}
83 start_t1 = int(time.time() * 1e9)
86 end_t1 = int(time.time() * 1e9)
87 start_t2 = int(time.time() * 1e9)
90 end_t2 = int(time.time() * 1e9)
91 start_t3 = int(time.time() * 1e9)
92 grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
93 delta, common = [], {}
95 for name in iter(old.keys()):
100 if name not in common:
102 sz = old[name]["size"]
104 delta.append((-sz, name))
107 if name not in common:
109 sz = new[name]["size"]
111 delta.append((sz, name))
114 d = new[name].get("size", 0) - old[name].get("size", 0)
115 if d>0: grow, up = grow+1, up+d
116 elif d<0: shrink, down = shrink+1, down-d
119 delta.append((d, name))
124 end_t3 = int(time.time() * 1e9)
126 print("%-48s %7s %7s %+7s" % ("function", "old", "new", "delta"))
129 old_sz = old.get(n, {}).get("size", "-")
130 new_sz = new.get(n, {}).get("size", "-")
131 print("%-48s %7s %7s %+7d" % (n, old_sz, new_sz, d))
133 total="(add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s)%%sTotal: %s bytes"\
134 % (add, remove, grow, shrink, up, -down, up-down)
135 print(total % (" "*(80-len(total))))
137 print("\n%d/%d; %d Parse origin/new; processing nsecs" %
138 (end_t1-start_t1, end_t2-start_t2, end_t3-start_t3))
139 print("total nsecs: %d" % (end_t3-start_t1))