My debugging symbols solution

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mindcooler

Joined: 01 Dec 2009
Posts: 423
Location: Västerås, Sweden

mindcooler 13 Feb 2012, 23:41

Due to the rise in posts about debugging symbols, I finished my own two-click system for creating exported symbol debug binaries, briefly described here: http://board.flatassembler.net/topic.php?t=13843

As I use custom includes, I don't know how well the idea transfers to the usual includes.

Basically it consists of a program to extract suitable symbols from a .fas file, and a batch script:

fas.bat wrote:

@echo off
set include=E:\_program1\_programmering\fasmw\INCLUDE
cd E:\_projekt\fasm\32
e:
e:\_program1\_programmering\fasmw\FASM.EXE %1 -s debug.fas
fas.exe debug.fas 1> exports.txt
cp %1 debug.asm
sed -i "s~UI~UI,debug~" debug.asm
sed -i "s~import~<exports>\n\nimport~" debug.asm
sed -i "s~\ \.[^,]*,~~g" exports.txt
sed -i "s~\ [^,]*\.iat,~~g" exports.txt
sed -i "s~\ bss,~~g" exports.txt
sed -i -f fas.sed debug.asm
e:\_program1\_programmering\fasmw\FASM.EXE debug.asm %~d1%~p1%~n1.debug.exe

fas.sed wrote:

/<exports>/ {
r exports.txt
d
}

◊ I first generate the .fas file from the assembly file.

◊ Then, from the .fas file I output those symbols that:

◊ I make a copy of the source file, set it to debug mode.

◊ Unwanted symbols are pruned: symbols that start with a dot, contain ".iat", or is "bss".

◊ The resulting string - an export macro invocation - is inserted into the source and compiled

The result is a good collection of exported symbols that is useful in debugging:

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13 Feb 2012, 23:41

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20433
Location: In your JS exploiting you and your system

revolution 14 Feb 2012, 01:45

Can you please explain what sed is? It is your own program? My windows system seem to be missing it.

14 Feb 2012, 01:45

bubach

Joined: 17 Sep 2004
Posts: 341
Location: Trollhättan, Sweden

bubach 14 Feb 2012, 08:45

my best guess would be:

Quote:

Sed (streams editor) isn't really a true text editor or text processor. Instead, it is used to filter text, i.e., it takes text input and performs some operation (or set of operations) on it and outputs the modified text. Sed is typically used for extracting part of a file using pattern matching or substituting multiple occurances of a string within a file.

http://gnuwin32.sourceforge.net/packages/sed.htm

14 Feb 2012, 08:45

mindcooler

Joined: 01 Dec 2009
Posts: 423
Location: Västerås, Sweden

mindcooler 14 Feb 2012, 14:33

Yes I use sed from http://unxutils.sourceforge.net/.

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14 Feb 2012, 14:33

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 16 Feb 2012, 22:43

revolution wrote:

Can you please explain what sed is? It is your own program? My windows system seem to be missing it.

That's because Windows is not UNIX nor POSIX and doesn't try to be. I honestly suspect you're being facetious as sed is fairly common (though admittedly very niche).

http://en.wikipedia.org/wiki/Sed
http://www.gnu.org/software/sed/
http://www.pement.org/sed/
http://sed.sourceforge.net/
http://lvogel.free.fr/sed.htm
http://www.exactcode.de/site/open_source/minised/

16 Feb 2012, 22:43

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20433
Location: In your JS exploiting you and your system

revolution 16 Feb 2012, 22:51

It is just a way to get people to explain what they are doing, rather than assume that everyone knows what is happening. This is a Windows section so things like sed will be foreign to most users. It is certainly foreign to me. And from what I can already see there appears to be many different versions of sed, so one can only hope that they all do the same thing with the code posted above.

16 Feb 2012, 22:51

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 16 Feb 2012, 22:54

http://pubs.opengroup.org/onlinepubs/007904875/utilities/sed.html

16 Feb 2012, 22:54

mindcooler

Joined: 01 Dec 2009
Posts: 423
Location: Västerås, Sweden

mindcooler 03 Nov 2012, 22:52

I've tweaked my system somewhat to include more useful symbols and filter more less useful ones.

http://files.sys5.se/fas.asm

fas.bat wrote:

@echo off
set include=E:\_program1\_programmering\fasmw\INCLUDE
cd E:\_projekt\fasm\32
e:
e:\_program1\_programmering\fasmw\FASM.EXE %1 -s debug.fas
fas.exe debug.fas 1> exports.txt
cp %1 debug.asm
sed -i "s~UI~UI,debug~" debug.asm
sed -i "s~import\t~<exports>\n\nimport\t~" debug.asm
sed -i "s~\ \.[^,]*,~~g" exports.txt
sed -i "s~\ [^,]*\.iat,~~g" exports.txt
sed -i "s~\ bss,~~g" exports.txt
sed -i "s~\, \.\.[^\ ]*~~g" exports.txt
sed -i "s~\, [^,]*?[^,]*~~g" exports.txt
sed -i -f fas.sed debug.asm
e:\_program1\_programmering\fasmw\FASM.EXE debug.asm %~d1%~p1%~n1.debug.exe
if %ERRORLEVEL%==0 goto end
pause
:end
del sed??????

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03 Nov 2012, 22:52

XQuader

Joined: 24 Apr 2011
Posts: 1
Location: Belarus

XQuader 26 Mar 2013, 13:36

Where is compiled version of fas.asm?
Can someone share it? Or share pe.inc (needed to compile it from fas.asm)

PS. Sorry for bad English

26 Mar 2013, 13:36

mindcooler

Joined: 01 Dec 2009
Posts: 423
Location: Västerås, Sweden

mindcooler 26 Mar 2013, 22:58

I can try to make it a bit more general than it is now; it has a lot of hardcoded paths and stuff as it is now.

26 Mar 2013, 22:58

mindcooler

Joined: 01 Dec 2009
Posts: 423
Location: Västerås, Sweden

mindcooler 29 Mar 2013, 18:40

Made a bundle: http://files.sys5.se/fas.zip

You need to change two lines in the fas.bat file, then supply fas.exe the parameter fas.asm to test the system out.

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29 Mar 2013, 18:40

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