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zodiacARM.cpp

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-1-0-0rc1/backends/platform/PalmOS/Src/native/zodiacARM.cpp $
 * $Id: zodiacARM.cpp 30664 2008-01-27 19:47:41Z jvprat $
 *
 */

#include "PalmVersion.h"
#include <MSL_PalmOS.h>

#include "globals.h"
#include "args.h"
#include "palmdefs.h"

#include "rumble.h"


//#include <AdnDebugMgr.h>
//#define DEBUG_ARM

#include "base/main.h"
#ifdef COMPILE_ZODIAC
#     include "be_zodiac.h"
#endif
#include "be_os5ex.h"

GlobalsDataType g_vars;
GlobalsDataPtr gVars = &g_vars;
UInt32 g_stackSize;

extern "C" void __destroy_global_chain(void);
extern void DrawStatus(Boolean show);

static void palm_main(int argc, char **argvP)  {
#ifdef COMPILE_OS5
      if (gVars->advancedMode)
            g_system = new OSystem_PalmOS5Ex();
      else
            g_system = new OSystem_PalmOS5();
#elif defined(COMPILE_ZODIAC)
      g_system = new OSystem_PalmZodiac();
#else
      #error "No target defined."
#endif

      assert(g_system);

      scummvm_main(argc, argvP);

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

static void Go() {
      void *tmp;
      char **argvP;
      int argc;

#ifdef DEBUG_ARM
// Tell the debugger we want to enable full debugging
      UInt32 flags = AdnDebugEnableGet();
      flags |= kAdnEnableMasterSwitch | kAdnEnableFullDebugging;
      AdnDebugEnableSet(flags);
// Tell the debugger where our code lives in memory:
      AdnDebugNativeRegister(sysFileTApplication, appFileCreator, 'ARMC', 1);
#endif

      // get global struct
      FtrGet(appFileCreator, ftrVars, (UInt32 *)&tmp);
      MemMove(gVars, tmp, sizeof(GlobalsDataType));

      // init STDIO
      stdio_set_cache(0);
      stdio_init(gVars->VFS.volRefNum, "/PALM/Programs/ScummVM/scumm.log");
      if (gVars->indicator.showLED)
            stdio_set_led(DrawStatus);
      stdio_set_cache(gVars->VFS.cacheSize);

      // get args
      FtrGet(appFileCreator, ftrArgsData, (UInt32 *)&argvP);
      FtrGet(appFileCreator, ftrArgsCount, (UInt32 *)&argc);

      // init system
      WinSetDrawWindow(WinGetDisplayWindow());
      if (HWR_INIT(INIT_VIBRATOR))  gVars->vibrator = RumbleInit();

      // run ...
      DO_EXIT ( palm_main(argc, argvP); )

      // release
      if (HWR_INIT(INIT_VIBRATOR))  RumbleRelease();
      stdio_release();

#ifdef DEBUG_ARM
      AdnDebugNativeUnregister();
#endif
}

/* Stack size */

Int8 *g_newStack, *g_newStackPos;
void *g_oldStack;

static asm void *StkSwap(void *newStack ,void *dummy) {
      mov  r1, r13
      mov  r13, r0
      mov    r0, r1
      bx     lr
}

extern UInt32 PilotMain(UInt16 cmd, MemPtr cmdPBP, UInt16 launchFlags) {
      if (cmd == sysAppLaunchCmdNormalLaunch) {
            FtrGet(appFileCreator, ftrStack, &g_stackSize);
            if (!g_stackSize)
                  g_stackSize = 32 * 1024;

            g_newStack = (Int8 *)malloc(g_stackSize + 8);
            g_newStackPos = (g_newStack + g_stackSize);
            g_newStackPos -= ((UInt32)g_newStackPos & 7);

            g_oldStack = StkSwap(g_newStackPos, 0);

            Go();

            StkSwap(g_oldStack, 0);
            free(g_newStack);
      }

      // Destroy all constructed global objects
      __destroy_global_chain();

      return 0;
}

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