diff options
| -rw-r--r-- | Makefile | 20 | ||||
| -rw-r--r-- | kconfig/Makefile | 2 | ||||
| -rwxr-xr-x | scripts/bloat-o-meter | 65 | ||||
| -rwxr-xr-x | scripts/showasm | 20 |
4 files changed, 103 insertions, 4 deletions
@@ -1,8 +1,9 @@ # Makefile for toybox. # Copyright 2006 Rob Landley <rob@landley.net> -CFLAGS = -Wall -Wundef -Os -s +CFLAGS = -Wall -Wundef -Os CC = $(CROSS_COMPILE)gcc $(CFLAGS) -funsigned-char +STRIP = $(CROSS_COMPILE)strip HOST_CC = gcc $(CFLAGS) -funsigned-char all: toybox @@ -25,15 +26,28 @@ gen_config.h: .config -e 'h' -e 's/.*/#define CFG_& 1/p' \ -e 'g' -e 's/.*/#define USE_&(...) __VA_ARGS__/p' $< > $@ +# Development targets +baseline: toybox_unstripped + @cp toybox_unstripped toybox_old + +bloatcheck: toybox_old toybox_unstripped + @scripts/bloat-o-meter toybox_old toybox_unstripped + # Actual build toyfiles = main.c toys/*.c lib/*.c -toybox: gen_config.h $(toyfiles) toys/toylist.h lib/lib.h toys.h - $(CC) $(CFLAGS) -I . $(toyfiles) -o toybox \ +toybox_unstripped: gen_config.h $(toyfiles) toys/toylist.h lib/lib.h toys.h + $(CC) $(CFLAGS) -I . $(toyfiles) -o toybox_unstripped \ -ffunction-sections -fdata-sections -Wl,--gc-sections +toybox: toybox_unstripped + $(STRIP) toybox_unstripped -o toybox clean:: rm -f toybox gen_config.h distclean: clean rm -f .config + +help:: + @echo ' baseline - Create busybox_old for use by bloatcheck.' + @echo ' bloatcheck - Report size differences between old and current versions' diff --git a/kconfig/Makefile b/kconfig/Makefile index 4446e2c2..46a8f6e4 100644 --- a/kconfig/Makefile +++ b/kconfig/Makefile @@ -32,7 +32,7 @@ defconfig: $(obj)/conf $< -d $(KCONFIG_TOP) # Help text used by make help -help: +help:: @echo ' config - Update current config utilising a line-oriented program' @echo ' menuconfig - Update current config utilising a menu based program' @echo ' oldconfig - Update current config utilising a provided .config as base' diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter new file mode 100755 index 00000000..31364fe1 --- /dev/null +++ b/scripts/bloat-o-meter @@ -0,0 +1,65 @@ +#!/usr/bin/python +# +# Copyright 2004 Matt Mackall <mpm@selenic.com> +# +# 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 + +if len(sys.argv) != 3: + sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0]) + sys.exit(-1) + +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) + for l in os.popen("readelf -S " + file).readlines(): + x = l.split() + if len(x)<6 or x[1] != ".rodata": continue + sym[".rodata"] = int(x[5], 16) + return sym + +old = getsizes(sys.argv[1]) +new = getsizes(sys.argv[2]) +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 old: + if name not in common: + remove += 1 + down += old[name] + delta.append((-old[name], name)) + +for name in new: + if name not in common: + add += 1 + up += new[name] + delta.append((new[name], name)) + +for name in common: + d = new.get(name, 0) - old.get(name, 0) + if d>0: grow, up = grow+1, up+d + if d<0: shrink, down = shrink+1, down-d + delta.append((d, name)) + +delta.sort() +delta.reverse() + +print "%-48s %7s %7s %+7s" % ("function", "old", "new", "delta") +for d, n in delta: + if d: print "%-48s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), 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))) diff --git a/scripts/showasm b/scripts/showasm new file mode 100755 index 00000000..75a6efd7 --- /dev/null +++ b/scripts/showasm @@ -0,0 +1,20 @@ +#!/bin/sh + +# Copyright 2006 Rob Landley <rob@landley.net> + +# Dumb little utility function to print out the assembly dump of a single +# function, or list the functions so dumpable in an executable. You'd think +# there would be a way to get objdump to do this, but I can't find it. + +[ $# -lt 1 ] || [ $# -gt 2 ] && { echo "usage: showasm file function"; exit 1; } + +[ ! -f $1 ] && { echo "File $1 not found"; exit 1; } + +if [ $# -eq 1 ] +then + objdump -d $1 | sed -n -e 's/^[0-9a-fA-F]* <\(.*\)>:$/\1/p' + exit 0 +fi + +objdump -d $1 | sed -n -e '/./{H;$!d}' -e "x;/^.[0-9a-fA-F]* <$2>:/p" + |