bc: convert to "G trick" - this returns bc to zero bss increase

[oweals/busybox.git] / scripts / bloat-o-meter

diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
index acee6bea95f3176b7b9706f78bdb8fb4e94321fa..cb861b8e9250cc4aeca26823cc51826b1b4aca75 100755 (executable)
--- a/scripts/bloat-o-meter
+++ b/scripts/bloat-o-meter
@@ -1,17 +1,20 @@
-#!/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
 
 def usage():
-    sys.stderr.write("usage: %s [-t] file1 file2\n" % sys.argv[0])
-    sys.exit(-1)
+    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)
@@ -31,6 +34,8 @@ for f in sys.argv[1:]:
             f1 = f
         elif f2 is None:
             f2 = f
+        else:
+            usage()
 if flag_timing:
     import time
 if f1 is None or f2 is None:
@@ -39,31 +44,22 @@ if f1 is None or f2 is None:
 sym_args = " ".join(sys.argv[3 + flag_timing + dashes:])
 def getsizes(file):
     sym, alias, lut = {}, {}, {}
-    #dynsym_filter = re.compile("^\d+:\s+[\dA-Fa-f]+\s+\d+\s+\w+\s+\w+\s+\w+\s+\w+\s+\w+$")
     for l in os.popen("readelf -W -s %s %s" % (sym_args, file)).readlines():
-        if True:
-            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
-        #else:
-        #    l = l.strip()
-        #    match = dynsym_filter.match(l)
-        #    if not match: continue
-        #    x, value, size, typ, bind, x, ndx, name = l.split()
-        #    if ndx == "UND": continue # skip undefined
-        #    if typ in ["SECTION", "FILES"]: continue # skip sections and files
+        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)
+        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 alias.iterkeys():
+    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:
@@ -92,7 +88,7 @@ if flag_timing:
 grow, shrink, add, remove, up, down = 0, 0, 0, 0, 0, 0
 delta, common = [], {}
 
-for name in old.iterkeys():
+for name in iter(old.keys()):
     if name in new:
         common[name] = 1
 
@@ -123,16 +119,16 @@ delta.reverse()
 if flag_timing:
     end_t3 = int(time.time() * 1e9)
 
-print "%-48s %7s %7s %+7s" % ("function", "old", "new", "delta")
+print("%-48s %7s %7s %+7s" % ("function", "old", "new", "delta"))
 for d, n in delta:
     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
+        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)))
+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))