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disable buttons in XMB menu
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Wed Dec 24, 2008 2:23 am    Post subject: disable buttons in XMB menu Reply with quote
I am making a prx plugin and I want to disable psp buttons in XMB menu (like the VSH menu), they would work just in my prx plugin. How to do that?
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Torch



Joined: 28 May 2008
Posts: 842
PostPosted: Wed Dec 24, 2008 3:47 pm    Post subject: Reply with quote
It calls vshCtrlReadBufferPositive. It can be hooked with a syscall patch. Or by patching the import call directly. Syscall patch is easier.

There are probably other methods but the advantage of hooking this function is that you can use the value it returns to detect key presses for your plugin. The XMB will call it continuously, so just use the pad data from the call, and make it zero after you're done so that the XMB will not respond to buttons. Your plugin will not have the overhead of its own button reading loop.
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Wed Dec 24, 2008 7:36 pm    Post subject: Reply with quote
calling sceCtrlReadBufferPositive doesnt help when I call another function, for example delete file. Buttons works in XMB menu because delete file function take too long time... :(
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Torch



Joined: 28 May 2008
Posts: 842
PostPosted: Wed Dec 24, 2008 11:22 pm    Post subject: Reply with quote
hotter wrote:
calling sceCtrlReadBufferPositive doesnt help when I call another function, for example delete file. Buttons works in XMB menu because delete file function take too long time... :(


Don't call the function! I mean that the XMB calls vshCtrlReadBufferPositive to read buttons. If you hook that function, and make the paddata parameter 0 it will not receive any button presses. And you can use the value before you make it zero in your own program to read the buttons instead of having a separate sceCtrlReadBufferPositive.

Learn how to hook functions with syscall patch. Look at iop.prx source.
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KickinAezz



Joined: 03 Jun 2007
Posts: 328
PostPosted: Thu Dec 25, 2008 12:43 am    Post subject: Reply with quote
Simply use sceCtrlReadBufferPositive in the main loop it will disable XMB entirely until you switch back to sceCtrlPeekBufferPositive. (I remember when I did this long back... but it should work)
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NoEffex



Joined: 27 Nov 2008
Posts: 108
PostPosted: Thu Dec 25, 2008 2:14 am    Post subject: Reply with quote
void buttons_Set(void)
{
sceCtrlSetButtonMasks(0xFFFF, 1);
sceCtrlSetButtonMasks(0x10000, 2);
return;
}

void buttons_unSet(void)
{
sceCtrlSetButtonMasks(0x10000, 0);
sceCtrlSetButtonMasks(0xFFFF, 0);
return;
}


Set makes it so your proggy has access, unset sets it back.
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Thu Dec 25, 2008 5:16 am    Post subject: Reply with quote
NoEffex wrote:
void buttons_Set(void)
{
sceCtrlSetButtonMasks(0xFFFF, 1);
sceCtrlSetButtonMasks(0x10000, 2);
return;
}

void buttons_unSet(void)
{
sceCtrlSetButtonMasks(0x10000, 0);
sceCtrlSetButtonMasks(0xFFFF, 0);
return;
}


Set makes it so your proggy has access, unset sets it back.


well I guess I need to include something like: #include <pspctrl_kernel.h>
but I get error:
main.c:(.text+0x4f8): undefined reference to `sceCtrl_driver_7CA723DC'
Do I need to add something in makefile?
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NoEffex



Joined: 27 Nov 2008
Posts: 108
PostPosted: Thu Dec 25, 2008 5:53 am    Post subject: Reply with quote
Is your prx in user or kernel mode?
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Thu Dec 25, 2008 6:04 am    Post subject: Reply with quote
I guess it is in kernel mode
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NoEffex



Joined: 27 Nov 2008
Posts: 108
PostPosted: Thu Dec 25, 2008 7:39 am    Post subject: Reply with quote
I mean, are you using kernel libs?

ex. in makefile

USE_KERNEL_LIBS=1
USE_KERNEL_LIBC=1

generally indicates kernel prx

I think the button mask is kernel-only, as I use it on several prx's, which are all kernel-mode.
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Thu Dec 25, 2008 9:34 am    Post subject: Reply with quote
no I dont use these because I cant printf after these...
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NoEffex



Joined: 27 Nov 2008
Posts: 108
PostPosted: Thu Dec 25, 2008 9:47 am    Post subject: Reply with quote
pspDebugScreenKprintf

or

#define printf(...) { char buf[256]; sprintf(buf,__VA_ARGS__); pspDebugScreenPuts( buf ); }
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Torch



Joined: 28 May 2008
Posts: 842
PostPosted: Thu Dec 25, 2008 12:51 pm    Post subject: Reply with quote
KickinAezz wrote:
Simply use sceCtrlReadBufferPositive in the main loop it will disable XMB entirely until you switch back to sceCtrlPeekBufferPositive. (I remember when I did this long back... but it should work)


That doesn't work reliably for everyone. If your loop is not 60 calls per second it will still receive button presses. I use sceCtrlReadBufferPositive in some older plugins and XMB still works.
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Thu Dec 25, 2008 10:39 pm    Post subject: Reply with quote
where could I find tutorials or something like that to make prx in XMB menu?
Would be cool to see VSHmenu source code :D
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NoEffex



Joined: 27 Nov 2008
Posts: 108
PostPosted: Fri Dec 26, 2008 7:53 am    Post subject: Reply with quote
Not sure about the opacity but it looks like it uses the basic debug library, consisting of

pspDebugScreenSetXY(w/e, w/e);
pspDebugScreenSetBackColor(Whatever);
pspDebugScreenSetTextColor(Whatever);
pspDebugScreenPuts("M33 Vshmenu");

and so on.
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Sun Dec 28, 2008 12:59 am    Post subject: Reply with quote
Torch wrote:

Learn how to hook functions with syscall patch. Look at iop.prx source.


where could i find iop.prx source?
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Torch



Joined: 28 May 2008
Posts: 842
PostPosted: Tue Dec 30, 2008 11:28 am    Post subject: Reply with quote
Heres a modified version of the iop.prx that comes with DC, this one can be unloaded.
http://ifile.it/brjox3v/iop_unloadable.zip
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Tue Dec 30, 2008 9:12 pm    Post subject: Reply with quote
well I tried my best and that is what I get:
Code:

//...

int vshReadButtons(SceCtrlData *pad_data, int count)
{
  int k1 = pspSdkSetK1(0);
  int level = sctrlKernelSetUserLevel(8);

  sceCtrlReadBufferPositive(&pad, 1);

  sctrlKernelSetUserLevel(level);
  pspSdkSetK1(k1);
  return 0;
}

int module_start(SceSize args, void *argp)
{
  PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x826668E9);
   
  if (!PatchSyscall)
  {
    PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x02BFCB5F);

    if (!PatchSyscall)
    {
      asm("break\n");
      return 1;
    }
  }

  orgaddr=sctrlHENFindFunction("vshCtrlReadBufferPositive", "Idontknowwhattowritehere", 0xC6395C03);
  PatchSyscall(orgaddr, vshReadButtons);

  sceKernelDcacheWritebackAll();
  sceKernelIcacheClearAll();

  //...

  return 0;
}

//...

But it doesnt work, could you help?
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Torch



Joined: 28 May 2008
Posts: 842
PostPosted: Tue Dec 30, 2008 9:50 pm    Post subject: Reply with quote
Code:

//...

int (* vshCtrlReadBufferPositive)(SceCtrlData *pad_data, int count);

int vshReadButtons(SceCtrlData *pad_data, int count)
{
  int ret, intc;
 
  ret = vshCtrlReadBufferPositive(pad_data, count);
  if(ret <= 0)
  {
    return ret;
  }
 
  intc = pspSdkDisableInterrupts();

  //your program's button handling goes here. this function will be called automatically by the xmb.
  if (pad_data.Buttons & PSP_CTRL_CIRCLE) //etc
  {
    //do your stuff for the buttons
  }
 
  //zero it after use so xmb will not respond
  pad_data.Buttons = 0;
 
  pspSdkEnableInterrupts(intc);
  return ret;
}

int module_start(SceSize args, void *argp)
{
  PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x826668E9);
   
  if (!PatchSyscall)
  {
    PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x02BFCB5F);

    if (!PatchSyscall)
    {
      asm("break\n");
      return 1;
    }
  }

  orgaddr=sctrlHENFindFunction("sceVshBridge_Driver", "sceVshBridge", 0xC6395C03);
  vshCtrlReadBufferPositive = (void *)orgaddr;
  PatchSyscall(orgaddr, vshReadButtons);

  sceKernelDcacheWritebackAll();
  sceKernelIcacheClearAll();

  //...

  return 0;
}

//...



This method will not increase CPU usage a lot because there needn't be a main loop to read the controls.

Also this method will not break the M33 VSHMenu. If VSHMenu is opened, your plugin will not receive input until the VSHMenu is closed.
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Wed Dec 31, 2008 1:45 am    Post subject: Reply with quote
well with some changes this code compiles but on psp it still dont work :(
It looks like function havent been patched because XMB still recave buttons ant my functions doesnt get buttons pressed.
It should disable XMB buttons from startup if I add prx to seplugins\vsh.txt and enable it, yes?
what could be wrong? :(
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Torch



Joined: 28 May 2008
Posts: 842
PostPosted: Wed Dec 31, 2008 3:34 am    Post subject: Reply with quote
You should wait for vshbridge to load before hooking.
Code:

//globals
int OnModuleStart(SceModule2 *mod);
STMOD_HANDLER previous = NULL;

...
...

int OnModuleStart(SceModule2 *mod)
{
   if (strcmp(mod->modname, "sceVshBridge_Driver") == 0)
   {
    orgaddr=sctrlHENFindFunction("sceVshBridge_Driver", "sceVshBridge", 0xC6395C03);
    vshCtrlReadBufferPositive = (void *)orgaddr;
    PatchSyscall(orgaddr, vshReadButtons);
   
    sceKernelDcacheWritebackAll();
    sceKernelIcacheClearAll();
   }
   
   if (!previous)
      return 0;
   
   return previous(mod);
}

int module_start(SceSize args, void *argp)
{
  PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x826668E9);
   
  if (!PatchSyscall)
  {
    PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x02BFCB5F);

    if (!PatchSyscall)
    {
      asm("break\n");
      return 1;
    }
  }

  sceKernelDcacheWritebackAll();
  sceKernelIcacheClearAll();
 
  previous = sctrlHENSetStartModuleHandler(OnModuleStart); //add this

  //...

  return 0;
}
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Wed Dec 31, 2008 5:13 am    Post subject: Reply with quote
well now it disables buttons on start up but my program dont get them but I still trying to make it work.
I guess I need to include something because I get error:
error: expected '=', ',', ';', 'asm' or '__attribute__' before 'previous'
on this line:
STMOD_HANDLER previous = NULL;
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ne0h



Joined: 21 Feb 2008
Posts: 386
PostPosted: Wed Dec 31, 2008 5:43 am    Post subject: Reply with quote
Look at the header...
There's something wrong...
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Torch



Joined: 28 May 2008
Posts: 842
PostPosted: Wed Dec 31, 2008 3:15 pm    Post subject: Reply with quote
Its in one of these headers:
#include <pspsdk.h>
#include <pspctrl.h>
#include <pspkernel.h>
#include <systemctrl.h>

Extract the latest M33SDK into your includes and libs.
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Wed Jan 07, 2009 7:08 am    Post subject: Reply with quote
I searched but I didnt find M33SDK... What if I will remove that variable?
This is edited code:
Code:

void (* PatchSyscall)(u32 funcaddr, void *newfunc);
int (* vshCtrlReadBufferPositive)(SceCtrlData *pad_data, int count);
int OnModuleStart(SceModule2 *mod);
u32 orgaddr;
SceCtrlData pad;


int vshReadButtons(SceCtrlData *pad_data, int count)
{
  int ret, intc;
 
  ret = vshCtrlReadBufferPositive(pad_data, count);
  if(ret <= 0)
  {
    return ret;
  }
  intc = pspSdkDisableInterrupts();
  pad = *pad_data;

  if (pad.Buttons & PSP_CTRL_CIRCLE)
  {
   //my menu on/off
    if(a == 0){ a = 1; }
   else{ a = 0; }
  }
  //if my menu on block buttons
  if(a == 1)
  {
     pad.Buttons = 0;
  }
  pad_data = &pad;
 
  pspSdkEnableInterrupts(intc);
  return ret;
}

int OnModuleStart(SceModule2 *mod)
{
   if (strcmp(mod->modname, "sceVshBridge_Driver") == 0)
   {
    orgaddr=sctrlHENFindFunction("sceVshBridge_Driver", "sceVshBridge", 0xC6395C03);
    vshCtrlReadBufferPositive = (void *)orgaddr;
    PatchSyscall(orgaddr, vshReadButtons);
   
    sceKernelDcacheWritebackAll();
    sceKernelIcacheClearAll();
   }
}


int module_start(SceSize args, void *argp)
{
  PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x826668E9);
  if (!PatchSyscall)
  {
    PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x02BFCB5F);
    if (!PatchSyscall)
    {
      asm("break\n");
      return 1;
    }
  }
  sceKernelDcacheWritebackAll();
  sceKernelIcacheClearAll();

  sctrlHENSetStartModuleHandler(OnModuleStart);

  //...

  return 0;
}

int module_stop(SceSize args, void *argp)
{
  PatchSyscall((u32)vshReadButtons, (void *)orgaddr);
   
  sceKernelDcacheWritebackAll();
  sceKernelIcacheClearAll();

  return 0;
}

My program compiles. My functions gets buttons pushed but when I need to disable XMB menu buttons they are not disabled :( I guess I am doing something wrong in vshReadButtons function no?
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Torch



Joined: 28 May 2008
Posts: 842
PostPosted: Wed Jan 07, 2009 12:37 pm    Post subject: Reply with quote
You should directly use the value in pad_data. Since its a pointer, referencing it like the first element of an array pad_data[0] will give you the actual value.

You MUST include the previous pointer or it will break other plugins that hook module start, and possibly break M33 patches. The M33SDK comes in the 4.01M33 package.

Code:
STMOD_HANDLER previous = NULL;

...
...

int OnModuleStart(SceModule2 *mod)
{
...
...
   if (!previous)
      return 0;
   
   return previous(mod);
}



Code:
int vshReadButtons(SceCtrlData *pad_data, int count)
{
  int ret, intc;
 
  ret = vshCtrlReadBufferPositive(pad_data, count);
  if(ret <= 0)
  {
    return ret;
  }
  intc = pspSdkDisableInterrupts();

  if (pad_data[0].Buttons & PSP_CTRL_CIRCLE)
  {
   //my menu on/off
    if(a == 0){ a = 1; }
   else{ a = 0; }
  }
  //if my menu on block buttons
  if(a == 1)
  {
     pad_data[0].Buttons = 0;
  }
 
  pspSdkEnableInterrupts(intc);
  return ret;
}
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Wed Jan 07, 2009 10:11 pm    Post subject: Reply with quote
It is working!!! almost :D
now the buttons are disabled in XMB when my menu is on so its good, but the same error with "previous" variable.
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Last edited by hotter on Tue Mar 24, 2009 3:29 pm; edited 2 times in total
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hotter



Joined: 07 Dec 2008
Posts: 53
PostPosted: Thu Jan 08, 2009 5:07 am    Post subject: Reply with quote
I added this:
Code:

typedef int (* STMOD_HANDLER)(SceModule2 *);

and now I guess everything is working good!
Thx for help very much :)
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SweetNSourOrc



Joined: 11 Jun 2009
Posts: 1
PostPosted: Thu Jun 11, 2009 8:37 am    Post subject: I cant get this code to work Reply with quote
Code:


int vshReadButtons(SceCtrlData *pad_data, int count)
{
  int ret, intc;

  ret = vshCtrlReadBufferPositive(pad_data, count);
  if(ret <= 0)
  {
    return ret;
  }
  intc = pspSdkDisableInterrupts();

  pad_data[0].Buttons = 0;

  pspSdkEnableInterrupts(intc);
  return ret;
}

int OnModuleStart(SceModule2 *mod)
{
   if (strcmp(mod->modname, "sceVshBridge_Driver") == 0)
   {
    orgaddr=sctrlHENFindFunction("sceVshBridge_Driver", "sceVshBridge", 0xC6395C03);
    vshCtrlReadBufferPositive = (void *)orgaddr;
    PatchSyscall(orgaddr, vshReadButtons);

    sceKernelDcacheWritebackAll();
    sceKernelIcacheClearAll();
   }
   if (!previous)
      return 0;
   
   return previous(mod);
}


int module_start(SceSize args, void *argp)
{
  sceCtrlSetButtonMasks(0x001000, 1);
  PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x826668E9);
  if (!PatchSyscall)
  {
    PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x02BFCB5F);
    if (!PatchSyscall)
    {
      asm("break\n");
      return 1;
    }
  }
  sceKernelDcacheWritebackAll();
  sceKernelIcacheClearAll();

  sctrlHENSetStartModuleHandler(OnModuleStart);

  return 0;
}

int module_stop(SceSize args, void *argp)
{
  PatchSyscall((u32)vshReadButtons, (void *)orgaddr);

  sceKernelDcacheWritebackAll();
  sceKernelIcacheClearAll();

  return 0;
}


For some reason, this code still doesnt disable the keys in VSH for me. Can you guys help?
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hyeokje



Joined: 04 Aug 2009
Posts: 3
PostPosted: Tue Aug 04, 2009 11:05 pm    Post subject: Re: I cant get this code to work Reply with quote
Code:

#include <pspsdk.h>
#include <pspctrl.h>
#include <pspkernel.h>
#include <systemctrl.h>
#include <string.h>

PSP_MODULE_INFO("myHold", 0x1000, 1, 1);
STMOD_HANDLER previous = NULL;

void (* PatchSyscall)(u32 funcaddr, void *newfunc);
int (* vshCtrlReadBufferPositive)(SceCtrlData *pad_data, int count);
int OnModuleStart(SceModule2 *mod);
u32 orgaddr;
SceCtrlData pad;
int a;
unsigned int paddata_old;

int vshReadButtons(SceCtrlData *pad_data, int count)
{
   int ret, intc;

   ret = vshCtrlReadBufferPositive(pad_data, count);
   if(ret <= 0)
   {
      return ret;
   }
   intc = pspSdkDisableInterrupts();

   if(paddata_old != pad_data[0].Buttons)
   {
      // simultaneously hotkey
      // if( (pad_data[0].Buttons & PSP_CTRL_VOLUP) && (pad_data[0].Buttons & PSP_CTRL_VOLDOWN) )
      if(pad_data[0].Buttons & PSP_CTRL_NOTE)
      {
         if(a == 0) { a = 1; }
         else { a = 0; }
      }
   }
   paddata_old = pad_data[0].Buttons;

   if(a == 1)
   {
      pad_data[0].Buttons = 0;
   }

   pspSdkEnableInterrupts(intc);
   return ret;
}

int OnModuleStart(SceModule2 *mod)
{
   if (strcmp(mod->modname, "sceVshBridge_Driver") == 0)
   {
      orgaddr=sctrlHENFindFunction("sceVshBridge_Driver", "sceVshBridge", 0xC6395C03);
      vshCtrlReadBufferPositive = (void *)orgaddr;
      PatchSyscall(orgaddr, vshReadButtons);

      sceKernelDcacheWritebackAll();
      sceKernelIcacheClearAll();
   }
   if (!previous) return 0;

   return previous(mod);
}


int module_start(SceSize args, void *argp)
{
   PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x826668E9);
   if (!PatchSyscall)
   {
      PatchSyscall = (void *)sctrlHENFindFunction("SystemControl", "SystemCtrlForKernel", 0x02BFCB5F);
      if (!PatchSyscall)
      {
         asm("break\n");
         return 1;
      }
   }
   sceKernelDcacheWritebackAll();
   sceKernelIcacheClearAll();

   previous = sctrlHENSetStartModuleHandler(OnModuleStart);

   return 0;
}

int module_stop(SceSize args, void *argp)
{
   PatchSyscall((u32)vshReadButtons, (void *)orgaddr);

   sceKernelDcacheWritebackAll();
   sceKernelIcacheClearAll();

   return 0;
}


Code:

#Makefile
TARGET = myHold
OBJS = myHold.o

BUILD_PRX = 1
PRX_EXPORTS =

USE_KERNEL_LIBC = 1
USE_KERNEL_LIBS = 1

INCDIR =
CFLAGS = -O2 -G0 -Wall
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

LIBDIR =
LDFLAGS = -mno-crt0 -nostartfiles
LIBS = -lpspkubridge -lpspsystemctrl_user -lpspsystemctrl_kernel

PSPSDK=$(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build.mak

This is working, but launching homebrew causes error :(

I edited post, and this code is fully working. Thanks Torch.

Last edited by hyeokje on Sat Aug 08, 2009 2:01 pm; edited 4 times in total
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