main2o32.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 120 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  OS/2 32-bit EXE entry point.
*
****************************************************************************/


#include "variety.h"
#include "widechar.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <malloc.h>
#define INCL_DOSPROCESS
#define INCL_DOSEXCEPTIONS
#include <wos2.h>
#include "sigtab.h"
#include "initfini.h"
#include "thread.h"
#include "initarg.h"

#ifdef __SW_BR
    _WCRTDATA extern    unsigned    __hmodule;
    _WCRTLINK extern    void        (*__process_fini)( unsigned, unsigned );
    _WCRTLINK extern    void        (*__sig_init_rtn)( void );

    extern      void    __CommonInit( void );
    extern      int     main( int, char ** );
    extern      int     wmain( int, wchar_t ** );
#else
    extern      void    __OS2MainInit( EXCEPTIONREGISTRATIONRECORD *,
                                       void *, unsigned, char *,
                                       char * );
    #ifdef __WIDECHAR__
        extern  void    __wCMain( void );
        #if defined(_M_IX86)
            #pragma aux __wCMain   "*"
        #endif
    #else
        extern  void    __CMain( void );
        #if defined(_M_IX86)
            #pragma aux __CMain   "*"
        #endif
    #endif
    extern      unsigned        __ThreadDataSize;
    extern      void            __InitThreadData( thread_data *tdata );
#endif

void __F_NAME(__OS2Main,__wOS2Main)( unsigned hmod, unsigned reserved,
                                     char *env, char *cmd )
/********************************************************************/
{
    EXCEPTIONREGISTRATIONRECORD xcpt;

    reserved = reserved;
    #ifdef __SW_BR
        __hmodule = hmod;
        env = env;
        cmd = cmd;
    // Even though the exception handler and all that is
    // in the runtime DLL, it must be registered from here since
    // the registration record needs to live on stack
        __XCPTHANDLER = &xcpt;
        __process_fini = &__FiniRtns;
        __InitRtns( 255 );
        __sig_init_rtn();
        __CommonInit();
        #ifdef __WIDECHAR__
            exit( wmain( ___wArgc, ___wArgv ) );
        #else
            exit( main( ___Argc, ___Argv ) );
        #endif
    #else
    {
        thread_data     *tdata;

        __InitRtns( 1 );

        tdata = __alloca( __ThreadDataSize );
        memset( tdata, 0, __ThreadDataSize );
        // tdata->__allocated = 0;
        tdata->__data_size = __ThreadDataSize;
        __InitThreadData( tdata );
        __OS2MainInit( &xcpt, tdata, hmod, env, cmd );
        __F_NAME(__CMain,__wCMain)();
    }
    #endif
}
#if defined(_M_IX86)
    #ifdef __WIDECHAR__
        #pragma aux __wOS2Main "*" parm caller []
    #else
        #pragma aux __OS2Main "*" parm caller []
    #endif
#endif