1 /*
2 * Copyright © 2014 NVIDIA Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22
23 #ifndef LIBDRM_LIBDRM_H
24 #define LIBDRM_LIBDRM_H
25
26 #include "util/macros.h"
27
28
29 #include <sys/mman.h>
30
31 #if defined(ANDROID) && !defined(__LP64__)
32 /* 32-bit needs mmap64 for 64-bit offsets */
33 # define drm_mmap(addr, length, prot, flags, fd, offset) \
34 mmap64(addr, length, prot, flags, fd, offset)
35
36 # define drm_munmap(addr, length) \
37 munmap(addr, length)
38
39 #else
40
41 /* assume large file support exists */
42 # define drm_mmap(addr, length, prot, flags, fd, offset) \
43 mmap(addr, length, prot, flags, fd, offset)
44
45
drm_munmap(void * addr,size_t length)46 static inline int drm_munmap(void *addr, size_t length)
47 {
48 /* Copied from configure code generated by AC_SYS_LARGEFILE */
49 #define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + \
50 (((off_t) 1 << 31) << 31))
51 STATIC_ASSERT(LARGE_OFF_T % 2147483629 == 721 &&
52 LARGE_OFF_T % 2147483647 == 1);
53 #undef LARGE_OFF_T
54
55 return munmap(addr, length);
56 }
57 #endif
58
59 #endif
60