util/src/s60main/qts60main_mcrt0.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the Symbian application wrapper of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:BSD$
       
    10 ** You may use this file under the terms of the BSD license as follows:
       
    11 **
       
    12 ** "Redistribution and use in source and binary forms, with or without
       
    13 ** modification, are permitted provided that the following conditions are
       
    14 ** met:
       
    15 **   * Redistributions of source code must retain the above copyright
       
    16 **     notice, this list of conditions and the following disclaimer.
       
    17 **   * Redistributions in binary form must reproduce the above copyright
       
    18 **     notice, this list of conditions and the following disclaimer in
       
    19 **     the documentation and/or other materials provided with the
       
    20 **     distribution.
       
    21 **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
       
    22 **     the names of its contributors may be used to endorse or promote
       
    23 **     products derived from this software without specific prior written
       
    24 **     permission.
       
    25 **
       
    26 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
       
    27 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
       
    28 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
       
    29 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
       
    30 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
       
    31 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
       
    32 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
       
    33 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
       
    34 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
       
    35 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
       
    36 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
       
    37 ** $QT_END_LICENSE$
       
    38 **
       
    39 ****************************************************************************/
       
    40 
       
    41 // MCRT0.CPP
       
    42 //
       
    43 // © Portions copyright (c) 2005-2006 Nokia Corporation.  All rights reserved.
       
    44 // Copyright (c) Symbian Software Ltd 1997-2004.  All rights reserved.
       
    45 //
       
    46 
       
    47 // EPOC32 version of crt0.c for C programs which always want multi-threaded support
       
    48 
       
    49 #include <e32std.h>
       
    50 #include <exception> // must be before e32base.h so uncaught_exception gets defined
       
    51 #include <e32base.h>
       
    52 #include "estlib.h"
       
    53 
       
    54 // Needed for QT_TRYCATCH_LEAVING.
       
    55 #include <qglobal.h>
       
    56 
       
    57 #ifdef __ARMCC__
       
    58 __asm int CallMain(int argc, char *argv[], char *envp[])
       
    59 {
       
    60     import main
       
    61     code32
       
    62     b main
       
    63 }
       
    64 #define CALLMAIN(argc, argv, envp) CallMain(argc, argv, envp)
       
    65 #else
       
    66 extern "C" int main(int argc, char *argv[], char *envp[]);
       
    67 #define CALLMAIN(argc, argv, envp) main(argc, argv, envp)
       
    68 #endif
       
    69 
       
    70 // Dummy function to handle GCCE toolchain problem
       
    71 extern "C" GLDEF_C int __GccGlueInit()
       
    72 {
       
    73     return 0;
       
    74 }
       
    75 
       
    76 extern "C" IMPORT_C void exit(int ret);
       
    77 
       
    78 GLDEF_C TInt QtMainWrapper()
       
    79 {
       
    80     int argc = 0;
       
    81     char **argv = 0;
       
    82     char **envp = 0;
       
    83     // get args & environment
       
    84     __crt0(argc, argv, envp);
       
    85     //Call user(application)'s main
       
    86     TRAPD(ret, QT_TRYCATCH_LEAVING(ret = CALLMAIN(argc, argv, envp);));
       
    87     delete[] argv;
       
    88     delete[] envp;
       
    89     return ret;
       
    90 }
       
    91 
       
    92 
       
    93 #ifdef __GCC32__
       
    94 
       
    95 /* stub function inserted into main() by GCC */
       
    96 extern "C" void __gccmain(void) {}
       
    97 
       
    98 /* Default GCC entrypoint */
       
    99 extern "C" TInt _mainCRTStartup(void)
       
   100 {
       
   101     extern TInt _E32Startup();
       
   102     return _E32Startup();
       
   103 }
       
   104 
       
   105 #endif /* __GCC32__ */
       
   106 
       
   107 #ifdef __EABI__
       
   108 
       
   109 // standard entrypoint for C runtime, expected by some linkers
       
   110 // Symbian OS does not currently use this function
       
   111 extern "C" void __main() {}
       
   112 #endif