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mindcooler



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

    are defined
    are used
    have the "optimization adjustment is applied to" (whatever that means)
    are not virtual/relative
    are not anonymous labels


◊ 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:

Image

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Post 13 Feb 2012, 23:41
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17476
Location: In your JS exploiting you and your system
revolution
Can you please explain what sed is? It is your own program? My windows system seem to be missing it.
Post 14 Feb 2012, 01:45
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bubach



Joined: 17 Sep 2004
Posts: 341
Location: Trollhättan, Sweden
bubach
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
Post 14 Feb 2012, 08:45
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mindcooler



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

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Post 14 Feb 2012, 14:33
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rugxulo



Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)
rugxulo
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/
Post 16 Feb 2012, 22:43
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17476
Location: In your JS exploiting you and your system
revolution
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.
Post 16 Feb 2012, 22:51
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rugxulo



Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)
rugxulo
Post 16 Feb 2012, 22:54
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mindcooler



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


Image

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Post 03 Nov 2012, 22:52
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XQuader



Joined: 24 Apr 2011
Posts: 1
Location: Belarus
XQuader
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
Post 26 Mar 2013, 13:36
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mindcooler



Joined: 01 Dec 2009
Posts: 423
Location: Västerås, Sweden
mindcooler
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.
Post 26 Mar 2013, 22:58
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mindcooler



Joined: 01 Dec 2009
Posts: 423
Location: Västerås, Sweden
mindcooler
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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Post 29 Mar 2013, 18:40
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