newlib/libgloss/nios2/io-open.c

63 lines
1.6 KiB
C

/*
* io-open.c --
*
* Copyright (c) 2006 CodeSourcery Inc
* Copyright (c) 2018 Mentor Graphics
*
* 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;
__io_hosted (HOSTED_OPEN, parameters);
errno = __hosted_from_gdb_errno (parameters[1]);
return parameters[0];
#else
errno = ENOSYS;
return -1;
#endif
}