1 /*
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright © 2023 Keith Packard
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * 3. Neither the name of the copyright holder nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
33 * OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 #include "nios2_semihost.h"
37 #include <sys/types.h>
38 #include <sys/stat.h>
39 #include <fcntl.h>
40 #include <unistd.h>
41 #include <string.h>
42 #include <errno.h>
43 #include <stdarg.h>
44
gdb_flags(int flags)45 static int gdb_flags(int flags) {
46 int gdb = 0;
47
48 gdb = flags & 3;
49 if (flags & O_RDWR)
50 gdb |= GDB_O_RDWR;
51 if (flags & O_APPEND)
52 gdb |= GDB_O_APPEND;
53 if (flags & O_CREAT)
54 gdb |= GDB_O_CREAT;
55 if (flags & O_TRUNC)
56 gdb |= GDB_O_TRUNC;
57 if (flags & O_EXCL)
58 gdb |= GDB_O_EXCL;
59 return gdb;
60 }
61
62 int
open(const char * pathname,int flags,...)63 open(const char *pathname, int flags, ...)
64 {
65 va_list ap;
66
67 va_start(ap,flags);
68 uintptr_t mode = va_arg(ap, uintptr_t);
69 va_end(ap);
70 return nios2_semihost4(HOSTED_OPEN, (uintptr_t) pathname,
71 strlen(pathname) + 1,
72 gdb_flags(flags), mode);
73 }
74
