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psp_main.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2005-2006 The ScummVM project
 * Copyright (C) 2005 Joost Peters PSP Backend
 * Copyright (C) 2005 Thomas Mayer PSP Backend
 * Copyright (C) 2005 Paolo Costabel PSP Backend
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 
 *
 * $URL: https://svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-9-1/backends/psp/psp_main.cpp $
 * $Id: psp_main.cpp 22519 2006-05-18 13:59:20Z sev $
 *
 */


#define     USERSPACE_ONLY    //don't use kernel mode features

#ifndef USERSPACE_ONLY
#include <pspkernel.h>
#include <pspdebug.h>
#endif

#include <common/stdafx.h>
#include <common/system.h>
#include <base/engine.h>
#include <base/main.h>
#include <base/plugins.h>

#include "osys_psp_gu.h"
#include "./trace.h"



/**
 * Define the module info section
 *
 * 2nd arg must 0x1000 so __init is executed in
 * kernelmode for our loaderInit function
 */
#ifndef USERSPACE_ONLY
PSP_MODULE_INFO("SCUMMVM-PSP", 0x1000, 1, 1);
#else
PSP_MODULE_INFO("SCUMMVM-PSP", 0, 1, 1);
#endif

/**
 * THREAD_ATTR_USER causes the thread that the startup
 * code (crt0.c) starts this program in to be in usermode
 * even though the module was started in kernelmode
 */
#ifndef USERSPACE_ONLY
PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER | THREAD_ATTR_VFPU);
#endif


#ifndef USERSPACE_ONLY
void MyExceptionHandler(PspDebugRegBlock *regs) {
      /* Do normal initial dump, setup screen etc */

      pspDebugScreenInit();

      pspDebugScreenSetBackColor(0x00FF0000);
      pspDebugScreenSetTextColor(0xFFFFFFFF);
      pspDebugScreenClear();

      pspDebugScreenPrintf("Exception Details:\n");
      pspDebugDumpException(regs);

      while (1) ;
}

/**
 * Function that is called from _init in kernelmode before the
 * main thread is started in usermode.
 */
__attribute__ ((constructor))
void loaderInit() {
      pspKernelSetKernelPC();
      pspDebugInstallErrorHandler(MyExceptionHandler);
}
#endif

/* Exit callback */
SceKernelCallbackFunction exit_callback(int /*arg1*/, int /*arg2*/, void * /*common*/) {
      sceKernelExitGame();
      return 0;
}

/* Callback thread */
int CallbackThread(SceSize /*size*/, void *arg) {
      int cbid;

      cbid = sceKernelCreateCallback("Exit Callback", (SceKernelCallbackFunction)exit_callback, NULL);
      sceKernelRegisterExitCallback(cbid);

      sceKernelSleepThreadCB();
      return 0;
}

/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void) {
      int thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, THREAD_ATTR_USER, 0);
      if (thid >= 0) {
            sceKernelStartThread(thid, 0, 0);
      }

      return thid;
}

#undef main
int main(void)
{
      SetupCallbacks();

      //check if the save directory exists
      SceUID fd = sceIoDopen(SCUMMVM_SAVEPATH);
      if (fd < 0) {
            //No? then let's create it.
            sceIoMkdir(SCUMMVM_SAVEPATH, 0777); 
      } else {
            //it exists, so close it again.
            sceIoDclose(fd);
      }

      static char *argv[] = { "scummvm", NULL };
      static int argc = sizeof(argv)/sizeof(char *)-1;

      g_system = new OSystem_PSP_GU();
      assert(g_system);

      int res = scummvm_main(argc, argv);

      g_system->quit(); // TODO: Consider removing / replacing this!
      
      sceKernelSleepThread();

      return res;
}


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