forums.ps2dev.org

Griever · Joined: 20 Jun 2009 Posts: 6

Didn't anybody think about porting decomiler to windows? Just like it's done with prxtool. Much of potential users actually use abominable win32. Sad but true. And I guess, it's actually not very hard to compile it under gnu win compiler.

[wl] · Joined: 05 May 2006 Posts: 16

VERY slow git...

cory1492 · Joined: 10 Dec 2004 Posts: 216

Griever, you are right it is easy to make a win version, I built it the last time git was updated and source changes are minimal (I corrected a single crash-causing-on-exit problem in main if I remember right, kudos to the TC/Author(s) on a great program... with portability no less!):
pspdecompiler_2009-05-20_win32.zip

binary and source ~ with minimal changes included ~ if anyone else stuck on win wants to see what this thing is capable of (note to newbs, it's not magic and doesn't do *everything* for you, you will still have to be able to check it's work against disassembly.)

Used msys with mingw installed, on a (bleh) vista x64 machine no less. If I can build it on here, it must not be that hard.

The "hardest" part really is tracking down libexpat.a/h for windows, I mentioned where to get it (prebuilt) in build txt (edit:/fixed) Probably a better, more maintainable way of doing win builds but for whatever reason msys wasn't co-operating with me on self-searching usr paths for libs/headers that day.

[wl] · Joined: 05 May 2006 Posts: 16

is it possible to do the same for usual BOOT.BIN files from UMD?

kralyk · Posted: Wed Jun 24, 2009 12:31 am Post subject:

Griever: I compiled without any problems with mingw. I only needed to install expat.

wl: Not sure, it crashed when I tried one umd... =/
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[wl] · Joined: 05 May 2006 Posts: 16

i think it's because of elf loader, but there is many "proper" loaders included in psp emulators, i.e. Potemkin or pspplayer

ne0h · Joined: 21 Feb 2008 Posts: 386

When I try to compile the src I've: "_spawnvp: Invalid argument".
I've expat installed!
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ne0h · Joined: 21 Feb 2008 Posts: 386

I've some problems with a "jr", the code show a empty switch...
I'm using the version posted by cory1492 (maybe not the lastest) , I hope that this problem will be fixed soon!
Anyway, amazing work man!
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cory1492 · Joined: 10 Dec 2004 Posts: 216

The one I posted is based on the current public source, compiled likely the same day hnaves last updated it.

I updated the original file now that I've had a chance to review the license for libexpat, there is now a link to a much simpler zip with prebuilt win32 expat binary in it instead of the pre-built dll packages.

BOOT.BIN (when it isn't just NULL'ed or a phony) or decrypted EBOOT.BIN should be static ELF files, I think psp decompiler currently only takes care of prx/relocateable elfs? (see the tail of this discussion)

[wl] · Joined: 05 May 2006 Posts: 16

it's strange, but it not work properly when i compile sources under MVS2008.

first, in function
void propagate_constants (struct subroutine *sub); //file constants.c

variable "struct ssavar temp" is not fully initialized.

second, if i use -n option, i've got unhandled exception in function

void destroy_hashtable (void *ptr, void *arg); //file hash.c

at: free (ht->table);

m0skit0 · Joined: 02 Jun 2009 Posts: 226

This is an amazing project. I hope this gets continued, very very very good job. This will ease a lot PSP hacking. Congrats and keep it growing!!
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cory1492 · Joined: 10 Dec 2004 Posts: 216

Griever · Joined: 20 Jun 2009 Posts: 6

Thanks for win build issue answers.
The only problem I have now: pspdecompiler does not recognize game's eboots, though prxtool disasembles all of them ok and creates elfs, which are entirely recognized by IDA. I checked out "Chessmaster The Art of Learning" and "Archer Maclean's Mercury" EBOOT.BINs.

ne0h · Joined: 21 Feb 2008 Posts: 386

victorprosa · Joined: 14 Jan 2009 Posts: 38

Just a question...

How the makefile should look like when re-compiling the prx?

I mean, libraries, etc, cause it is supposed to have most libraries included, but i had problems when creating a makefile...

Dariusc123456 · Joined: 12 Aug 2008 Posts: 394

slasher2661996 · Posted: Sat Jul 04, 2009 7:27 pm Post subject:

kralyk · Posted: Mon Jul 06, 2009 10:44 pm Post subject:

Hi,
hows this project going? Any news? =)
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hnaves · Joined: 03 Feb 2009 Posts: 30

Hi,

I am very busy at the moment, and I will not be able to continue the development of this project during the next two months. I have a lot of plans (including FPU support) but have no time :-(

[wl] · Joined: 05 May 2006 Posts: 16

really bad news :(
i tryed to decompile BOOT.BIN, with small success, only 2-3 functions decompiled, looks like the app decompiles GP and exports only? how do u think, it's possible to add arbitrary address to command line instead GP, because GP in boot.bin just start main thread and exit

hlide · Joined: 10 Sep 2006 Posts: 750

dark_hex · Joined: 02 Dec 2009 Posts: 18

Someone can compile the last version and give me the link.

sauron_le_noir · Joined: 05 Jul 2008 Posts: 229

I have try to compile it against openwatom it generate code for windows,linux,dos and os/2 i haven"t found the include expat.he he is not present in the win32 port given by cory1492

expat.h is missing

cory1492 · Joined: 10 Dec 2004 Posts: 216

expat:
http://expat.sourceforge.net/
I believe I used a prebuilt bin for win32, like expat-win32bin-2.0.1.exe, to compile under msys/mingw.

willow :--) · Joined: 13 Jan 2007 Posts: 126

Is there some central repository where people post their reverted C code? Assuming someone starts working on reversing a prx, it sounds like a waste of effort if somebody else already reverted it...

Or is it the kind of stuff people are reluctant to share? Or is it illegal maybe?

Also, I'm quite new with that kind of stuff, but what does it mean when the decompiler finds a function that does nothing?
here's a random example from a file in firmware 6.xx:

phobox · Joined: 24 Mar 2008 Posts: 140

check the asm.. if pspdecompiler gave you that result the asm shouldn't be big.
Pspdecompiler is not working properly with return values...
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willow :--) · Joined: 13 Jan 2007 Posts: 126

Thanks, I'll check the asm file. (Note, other functions in the file actually contain things, but a few of them are, like this one, empty)
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cualquiercosa327 · Joined: 25 Nov 2009 Posts: 5

hello.Thanks for this tool.
I had found two similar tool (rec and boomerang)
http://www.backerstreet.com/rec/rec.htm

http://boomerang.sourceforge.net/

The first seem also "undestand" MIPS R3000 code.
the problem it is not open source,but maybe could be some kind of coperation