gcc/gcc/config/alpha/vms-psxcrt0.c

/* VMS crt0 returning Unix style condition codes .
   Copyright (C) 2001, 2009 Free Software Foundation, Inc.
   Contributed by Douglas B. Rupp (rupp@gnat.com).

This file is part of GCC.

GCC 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 3, or (at your option)
any later version.

GCC 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.

Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
<http://www.gnu.org/licenses/>.  */

#if !defined(__DECC)
You Lose! This file can only be compiled with DEC C.
#else

/* This file can only be compiled with DEC C, due to the call to
   lib$establish.  */

#include <stdlib.h>
#include <string.h>
#include <ssdef.h>
#include <stsdef.h>
#include <errnodef.h>

extern void decc$main ();
extern int main ();

static int
handler (sigargs, mechargs)
     void *sigargs;
     void *mechargs;
{
  return SS$_RESIGNAL;
}

int
__main (arg1, arg2, arg3, image_file_desc, arg5, arg6)
     void *arg1, *arg2, *arg3;
     void *image_file_desc;
     void *arg5, *arg6;
{
  int argc;
  char **argv;
  char **envp;
  int status;

  lib$establish (handler);
  decc$main (arg1, arg2, arg3, image_file_desc, arg5, arg6,
	     &argc, &argv, &envp);

  status = main (argc, argv, envp);

  /* Map into a range of 0 - 255.  */
  status = status & 255;

  if (status > 0)
    {
      int save_status = status;

      status = C$_EXIT1 + ((status - 1) << STS$V_MSG_NO);

      /* An exit failure status requires a "severe" error
	 All status values are defined in errno with a successful
	 (1) severity but can be changed to an error (2) severity by adding 1.
	 In addition for compatibility with UNIX exit() routines we inhibit
	 a run-time error message from being generated on exit(1).  */

      if (save_status == 1)
	{
	  status++;
	  status |= STS$M_INHIB_MSG;
	}
    }

  if (status == 0)
    status = SS$_NORMAL;

  return status;
}
#endif