forums.ps2dev.org

how about using mips sceKernelQuerySystemCall(desired_function)?

Whats the difference between jumping to a syscall directly and using sceKernelQuerySystemCall?

Hi,
hows this project going? Any news? =)

Oh please dont use .DOT, Im sick of every program making me install a different version of .NET CLR...

The problem seems to be in the syscall query.
When I substitute the MIPS_SYSCALL with just NOP, it's ok.
I mean, it's not ok, it doesn't work of course, but it doesn't crash
the psp so that should show that the problem is in the syscall...

dunno whats wrong with the syscall though, any ideas?

Hi, what actions do I need to take in order to install this properly?
Where should the pspsdk dir be located in linux?
Id like to make a PKGBUILD for Archlinux, which is my favourite distro.
Also, how do you compile this in linux? (I'd like to produce a x86_64 version as well)

why Java?

uhm no it's not because the subroutine can still be reached by text_addr + 0x1b3c Anyway, I got it resolved now, I must have messed the text_addr somehow or something, dunno. My code now works like this: u32 instruction //<- in this var I have the addiu instruction from RAM, which is always the same...

Yes exactly, before loading to RAM the address (of subroutine) is 0x1b3c and after loading it gets 0xae3c for some reason...

Yes yes, thanks, but theres more trouble with it. See I need to get address of certain subroutine of fw module because of hooking (it cant be hooked standard way because its a hook already :)). But the offset of the subroutine differs in each CFW so I have to look it up dynamically. Somewhere in the...

Don't you think you're a bit overconfident there, calling others noobs, lol.
Because I wouldn't dare to...

(Damn, is "overconfident" even a word in english? I wish I was better at foreign languages...)

I still don't understand... For example, this is a dissassembly of my module: ; ==== Section .text - Address 0x00000000 Size 0x000012D0 Flags 0x0006 ; ====================================================== ; Subroutine splugin_EE3DCDDE - Address 0x00000000 ; Exported in splugin splugin_EE3DCDDE&...

Hi, I need a little help with MIPS assembly. I dumped some prx code from RAM and compared it to dissassembly just to see that it was quite different. I know that MIPS assembly is somewhat transformed during "compilation" (or when going to RAM?), but to be honest I have no clue how... In Co...

Of course, psplibdoc doesn't work on firmware prx's where the NIDs have been randomized (or sodomized, whatever you call what they have been doing)

Which is what firmware? 5.50?

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

wl: Not sure, it crashed when I tried one umd... =/

BUILD_PRX means that I'm working on a PRX which I'm not (right?)

Well depends on firmware, if your fw is 1.50 then youre working on ELF, if you build for modern fw like 3xx/4xx/5xx then you need to build PRX even for EBOOTS.

At least I was told so, and it worked...

Thank you, but I just resolved the problem using buit in prnt() function Here goes the code: #define TEMP_LEN 1024 typedef struct &#123; char str&#91;TEMP_LEN&#93;; int idx; int done; &#125; prnt_cb_ctx; void prnt_cb&#40;prnt_cb_ctx * ctx, int ch&#41; &#123; if &#40;!...

Allright, I found the prnt() function: http://dark-alex.org/pspsdk_docs/pspsysclib_8h.html
How do I use it? Using it via a callback isn't really convenient... :/ oh well...

That's not a conception of dissassembly or anything,
it's a documentation of exports/imports and NIDs of firmware modules =)

What firmware are you building for anyway?
Maybe adding these lines to your makefile could help...

Hi,

I found myself in a need of functions like vsprintf and/or vfprintf in my vsh plugin prx, but those function can't be found in kernel libc.

Is there any chance I could get those functions in kernel libc?
Or are there any other with similar functionality in kernel libc that I could use?

You might want to have a look at this: http://forums.ps2dev.org/viewtopic.php?t=11985

Coldbird's comprehensive hooking sample:
http://forums.ps2dev.org/viewtopic.php?t=11894

hnaves' prx decompiler:
http://forums.ps2dev.org/viewtopic.php?t=11985

VLF gui thread:
http://forums.ps2dev.org/viewtopic.php? ... sc&start=0

I dont think so, I think more likely you made some error.
Does your module export the pathced function? It has to be exported...

MinPSPW is very convenient, it works out of the box.
But if you dont mind linux, stay on linux...

right, I didnt know about that, thanks... is there a docu for m33 sdk at all?
And shouldn't the new struct be copied over to pspsdk as well?
Some people don't use m33 sdk... (I dont use it when I dont have to)

oh and no, I work on 5.00 modules...

Hi, I think there's either a bug in SceModule structure definition, or I missed something critical... the structure is here: http://dark-alex.org/pspsdk_docs/structSceModule.html I made a simple dump from what sceKernelFindModuleByName returned and this is what I got: (it's vshControl module) E4 3E ...

Yes QT is now available under LGPL as well
see http://www.qtsoftware.com/downloads

Yes I read that tutorial by Coldbird, but Im afraid my func is ufortunatelly one of the unhookable ones, Ill try to figure out why... Anyway, thanks for help... EDIT: alright, I resolved the problem, the functions I need now get hooked ok. Here's the link to Coldbird's sample in case someone came ac...

Thanks for all the information..

So when I cant find a syscall in syscall table it means its already hooked?
Because apart from IoFileMgr I also tried to hook some of the sceMpegVsh calls, but they could not have been found in syscalltable either...
Does CFW hook those as well? That'd be strange...

The problem seems to be that the address of the call is not found in syscall table. I use this code: void* pspGetSysCallAddr&#40;u32 addr&#41; &#123; SyscallHeader *head; u32 *syscalls; void **ptr; int size; int i; if &#40;!addr&#41; return NULL; asm&#40; "cfc0 %0, $12\n...