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git-clone ...
./configure
make
gdb
open ro /tmp/SPL.nb
[0x00000000000000]> / ECEC
0xBFC77F1000000040 '(null)'
Program received signal SIGSEGV, Segmentation fault.
0xb7e7b7bc in memcpy () from /lib/libc.so.6
(gdb)
, but real programers don't use debuggers! hehe, just kidding and search
seems to be broken. I'll have a look at it later and will try the night
tarball.
thanks!
pancake wrote:
> Have you tried with the latest nighly tarball? Maybe you missed to
> git-checkout and run
> configure again. show me the registers, back trace and such info from gdb if
> the problem
> persists.
>
> Thanks
>
> --pancake
>
> On Sat, 07 Apr 2007 13:05:19 +0200
> esteve espuna <[EMAIL PROTECTED]> wrote:
>
>
>
> hi for me it segfaults in the callback :
>
> here:
> { printf("\e[K"OFF_FMTs" '%s' ", (off_t)where, flag_name);
> data_print((off_t)where, config.block+(where-config.seek),
> 60, FMT_ASC, MD_BLOCK);
> }
>
> tsearch.c line 58. When a hit is found.
>
>
> Thanks!
>
> esteve espuna wrote:
>
>>Hi,
>
>>great!! will have a look at it as soon as possible. By the benchmarking
>>difference keep in mind that the cost for N searches shouldn't be much
>>bigger that the cost for one search. The burden for many searches at
>>once has a payoff in performance.
>
>>Anyway if I have some time I'll look at it!
>
>
>>Great work!
>
>
>>pancake wrote:
>
>
>>>>I have finally integrated the new search engine into radare.
>>>>
>>>>Thanks to esteve for the great search algorithm!
>>>>
>>>>This new algorithm is called "binparser" and it's in his first stage of
>>>>design. The new engine fixes all the tickets in the bug report page
>>>>and gives more possibilities with a new regexp-like syntax for binary
>>>>searchs.
>>>>
>>>>[0x00000000000000]> /?
>>>>/x A0 B0 43 ; hex byte pair binary search.
>>>>/m FF 0F ; Binary mask for search
>>>>/ \x7FELF ; plain string search (supports \x).
>>>>/. [file] ; search using the token file rules
>>>>/r 0,2-10 ; launch range searches 0-10
>>>>/l ; list all search tokens (%SEARCH[%d])
>>>>// ; repeat last search
>>>>
>>>>Note that the buggy GNU regexps have been removed in pro to avoid buggy
>>>>results and buggy portability. The /m command to define a MASK for binary
>>>>strings is not yet implemented , but the rest is fine.
>>>>
>>>>You can throw N token searchs at once, so paralel searchs will be faster
>>>>than serialized ones with the old engine. Search strings are stored in
>>>>environment variables named %SEARCH[#] where '#' is a number from 0 to N.
>>>>
>>>>This is very useful because you can define multiple search strings and
>>>>throw them by range:
>>>>
>>>> /r 0-3,5
>>>>
>>>>This command will throw a search for the tokens 0, 1, 2, 3 and 5
>>>>Use the % command to define the search strings:
>>>>
>>>>
>>>>
>>>>
>>>>>%SEARCH[3] ELF\x01
>>>>
>>>>
>>>>The regexp support is done with [a-z] [0x00-0xFF] , etc... so, remember
>>>>to scape the '[' and other critical characters. (read the source, no doc
>>>>yet)
>>>>
>>>>I've done some benchmarking on it and these are the results:
>>>>
>>>>Time resuls searching a 3 char string inside a file of 60M:
>>>>
>>>>old engine:
>>>> real 0m3.352s
>>>> user 0m2.973s
>>>> sys 0m0.377s
>>>>
>>>>new engine:
>>>> real 0m4.956s
>>>> user 0m4.610s
>>>> sys 0m0.347s
>>>>
>>>>-------------
>>>>
>>>>The new engine is a bit slower, but it's ok for me, actually the code is
>>>>not clean at all, and both search engines are there. So I could probably
>>>>think on maintain both search engines or just the best one :)
>>>>
>>>>The next goal is to implement the 'binary mask'.
>>>>
>>>>Hope to documentate all this stuff in the wiki ASAP.
>>>>
>>>>
>>>> --pancake
>>>>_______________________________________________
>>>>radare mailing list
>>>>[email protected]
>>>>https://lists.nopcode.org/mailman/listinfo/radare
>>>>
>
>
> _______________________________________________
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> https://lists.nopcode.org/mailman/listinfo/radare
>
_______________________________________________
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> --pancake
> _______________________________________________
> radare mailing list
> [email protected]
> https://lists.nopcode.org/mailman/listinfo/radare
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