libgloss/cr16/open.c

   1 /* open.c -- Implementation of the low-level open() routine
   2  *
   3  * Copyright (c) 2004 National Semiconductor Corporation
   4  *
   5  * The authors hereby grant permission to use, copy, modify, distribute,
   6  * and license this software and its documentation for any purpose, provided
   7  * that existing copyright notices are retained in all copies and that this
   8  * notice is included verbatim in any distributions. No written agreement,
   9  * license, or royalty fee is required for any of the authorized uses.
  10  * Modifications to this software may be copyrighted by their authors
  11  * and need not follow the licensing terms described here, provided that
  12  * the new terms are clearly indicated on the first page of each file where
  13  * they apply.
  14  */
  15
  16 #include <sys/syscall.h>
  17 #include <stdarg.h>
  18
  19 int open_aux (char *, int, int);
  20
  21 /* The prototype in <fcntl.h> for open() uses ..., meaning function
  22  * parameters reside on stack, but the debugger expects the parameters
  23  * to reside in registers, thus we call an auxiliary function with
  24  * bounded number of parameters.
  25  */
  26 int _open (char *path, int flags, ...)
  27 {
  28   int mode;
  29   va_list ap;
  30
  31   va_start(ap, flags);
  32   mode = va_arg(ap, int);
  33   open_aux (path, flags, mode);
  34   va_end(ap);
  35 }
  36
  37 int open_aux (char *path, int flags, int mode)
  38 {
  39   HOST_SERVICE (SVC_OPEN);
  40 }
  41