-#!/usr/bin/python
+#!/usr/bin/env python
#
# Copyright 2004 Matt Mackall <mpm@selenic.com>
#
-# inspired by perl Bloat-O-Meter (c) 1997 by Andi Kleen
+# 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
+import sys, os
-if len(sys.argv) != 3:
- sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])
- sys.exit(-1)
+def usage():
+ sys.stderr.write("usage: %s [-t] file1 file2 [-- <readelf options>]\n"
+ % sys.argv[0])
+ sys.stderr.write("\t-t\tShow time spent on parsing/processing\n")
+ sys.stderr.write("\t--\tPass additional parameters to readelf\n")
+ sys.exit(1)
+f1, f2 = (None, None)
+flag_timing, dashes = (False, False)
+
+for f in sys.argv[1:]:
+ if f.startswith("-"):
+ if f == "--": # sym_args
+ dashes = True
+ break
+ if f == "-t": # timings
+ flag_timing = True
+ else:
+ if not os.path.exists(f):
+ sys.stderr.write("Error: file '%s' does not exist\n" % f)
+ usage()
+ if f1 is None:
+ f1 = f
+ elif f2 is None:
+ f2 = f
+ else:
+ usage()
+if flag_timing:
+ import time
+if f1 is None or f2 is None:
+ usage()
+
+sym_args = " ".join(sys.argv[3 + flag_timing + dashes:])
def getsizes(file):
- sym = {}
- for l in os.popen("nm --size-sort " + file).readlines():
- size, type, name = l[:-1].split()
- if type in "tTdDbB":
- if "." in name: name = "static." + name.split(".")[0]
- sym[name] = sym.get(name, 0) + int(size, 16)
+ sym, alias, lut = {}, {}, {}
+ for l in os.popen("readelf -W -s %s %s" % (sym_args, file)).readlines():
+ l = l.strip()
+ if not (len(l) and l[0].isdigit() and len(l.split()) == 8):
+ continue
+ num, value, size, typ, bind, vis, ndx, name = l.split()
+ if ndx == "UND": continue # skip undefined
+ if typ in ["SECTION", "FILES"]: continue # skip sections and files
+ if "." in name: name = "static." + name.split(".")[0]
+ value = int(value, 16)
+ size = int(size, 16) if size.startswith('0x') else int(size)
+ if vis != "DEFAULT" and bind != "GLOBAL": # see if it is an alias
+ alias[(value, size)] = {"name" : name}
+ else:
+ sym[name] = {"addr" : value, "size": size}
+ lut[(value, size)] = 0
+ for addr, sz in iter(alias.keys()):
+ # If the non-GLOBAL sym has an implementation elsewhere then
+ # it's an alias, disregard it.
+ if not (addr, sz) in lut:
+ # If this non-GLOBAL sym does not have an implementation at
+ # another address, then treat it as a normal symbol.
+ sym[alias[(addr, sz)]["name"]] = {"addr" : addr, "size": sz}
+ for l in os.popen("readelf -W -S " + file).readlines():
+ x = l.split()
+ if len(x)<6: continue
+ # Should take these into account too!
+ #if x[1] not in [".text", ".rodata", ".symtab", ".strtab"]: continue
+ if x[1] not in [".rodata"]: continue
+ sym[x[1]] = {"addr" : int(x[3], 16), "size" : int(x[5], 16)}
return sym
-old = getsizes(sys.argv[1])
-new = getsizes(sys.argv[2])
+if flag_timing:
+ start_t1 = int(time.time() * 1e9)
+old = getsizes(f1)
+if flag_timing:
+ end_t1 = int(time.time() * 1e9)
+ start_t2 = int(time.time() * 1e9)
+new = getsizes(f2)
+if flag_timing:
+ end_t2 = int(time.time() * 1e9)
+ start_t3 = int(time.time() * 1e9)
grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
delta, common = [], {}
-for a in old:
- if a in new:
- common[a] = 1
+for name in iter(old.keys()):
+ if name in new:
+ common[name] = 1
for name in old:
if name not in common:
remove += 1
- down += old[name]
- delta.append((-old[name], name))
+ sz = old[name]["size"]
+ down += sz
+ delta.append((-sz, name))
for name in new:
if name not in common:
add += 1
- up += new[name]
- delta.append((new[name], name))
+ sz = new[name]["size"]
+ up += sz
+ delta.append((sz, name))
for name in common:
- d = new.get(name, 0) - old.get(name, 0)
+ d = new[name].get("size", 0) - old[name].get("size", 0)
if d>0: grow, up = grow+1, up+d
- if d<0: shrink, down = shrink+1, down-d
+ elif d<0: shrink, down = shrink+1, down-d
+ else:
+ continue
delta.append((d, name))
delta.sort()
delta.reverse()
+if flag_timing:
+ end_t3 = int(time.time() * 1e9)
-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" % ("function", "old", "new", "delta")
+print("%-48s %7s %7s %+7s" % ("function", "old", "new", "delta"))
for d, n in delta:
- if d: print "%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d)
-print "----------------------------------------------------------------"
-s=")"
-if (up-down)>=0: s="("
-print "Result :-%s%+7d" % (s, up-down)
+ if d:
+ old_sz = old.get(n, {}).get("size", "-")
+ new_sz = new.get(n, {}).get("size", "-")
+ print("%-48s %7s %7s %+7d" % (n, old_sz, new_sz, d))
+print("-"*78)
+total="(add/remove: %s/%s grow/shrink: %s/%s up/down: %s/%s)%%sTotal: %s bytes"\
+ % (add, remove, grow, shrink, up, -down, up-down)
+print(total % (" "*(80-len(total))))
+if flag_timing:
+ print("\n%d/%d; %d Parse origin/new; processing nsecs" %
+ (end_t1-start_t1, end_t2-start_t2, end_t3-start_t3))
+ print("total nsecs: %d" % (end_t3-start_t1))
projects / platform / upstream / busybox.git / blobdiff