Re: Average instruction length in x86-built kernel?

[Jan Engelhardt]

>> Here's a script that does what I was looking for:
><snip>

Mmmmh, perlgolf?

>#!/bin/bash
>for a in "$@"
>do
>        objdump -d "$a" -j .text 
>done | perl -ne'
>BEGIN{%h=();$b=0};
>END{if($b){$h{$b}++};print map("$_: $h{$_}\n", sort(keys(%h)))};
>if(/\tnop    $/){$h{nop}++}
>elsif(/^[\s0-9a-f]{8}:\t([^\t]+) (\t?)/){
> $b+=split(" ",$1);if($2){$h{$b}++;$b=0}}'

objdump -j .text -d "$@" | perl -ne '
END{$h{$b}++if$b;print map"$_: $h{$_}\n",sort keys%h};
if(/\tnop\s*$/){$h{nop}++}    
elsif(/^.*?:\t([^\t]+) (\t?)/){
 $b+=split/ /,$1;if($2){$h{$b}++;$b=0}}'



Jan Engelhardt
-- 
| Alphagate Systems, http://alphagate.hopto.org/
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