Subversion Repositories openrisc

/*

 * io-open.c --

 *

 * Copyright (c) 2006 CodeSourcery Inc

 *

 * The authors hereby grant permission to use, copy, modify, distribute,

 * and license this software and its documentation for any purpose, provided

 * that existing copyright notices are retained in all copies and that this

 * notice is included verbatim in any distributions. No written agreement,

 * license, or royalty fee is required for any of the authorized uses.

 * Modifications to this software may be copyrighted by their authors

 * and need not follow the licensing terms described here, provided that

 * the new terms are clearly indicated on the first page of each file where

 * they apply.

 */

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <stdarg.h>

#include <string.h>

#include <errno.h>

#define IO open

#include "io.h"

/*

 * open -- Open a file.

 * input parameters:

 *   0 : fname ptr

 *   1 : fname length

 *   2 : flags

 *   3 : mode

 * output parameters:

 *   0 : result

 *   1 : errno

 */

int open (const char *fname, int flags, ...)

{

#if HOSTED

  gdb_parambuf_t parameters;

  parameters[0] = (uint32_t) fname;

  parameters[1] = strlen (fname) + 1;

  parameters[2] = __hosted_to_gdb_open_flags (flags);

  if (flags & O_CREAT)

    {

      va_list ap;

      va_start (ap, flags);

      parameters[3] = __hosted_to_gdb_mode_t (va_arg (ap, mode_t));

      va_end (ap);

    }

  else

    parameters[3] = 0;

  __hosted (HOSTED_OPEN, parameters);

  errno = __hosted_from_gdb_errno (parameters[1]);

  return parameters[0];

#else

  errno = ENOSYS;

  return -1;

#endif

}