1 /**************************************************************************
3 * Copyright 2011 LunarG, Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * OS independent memory mapping (with large file support).
32 * @author Chia-I Wu <olvaffe@gmail.com>
39 #include "pipe/p_config.h"
40 #include "pipe/p_compiler.h"
42 #if defined(PIPE_OS_UNIX)
43 # ifndef _FILE_OFFSET_BITS
44 # error _FILE_OFFSET_BITS must be defined to 64
46 # include <sys/mman.h>
48 # error Unsupported OS
51 #if defined(PIPE_OS_ANDROID)
52 # include <errno.h> /* for EINVAL */
60 #if defined(PIPE_OS_ANDROID)
62 extern void *__mmap2(void *, size_t, int, int, int, size_t);
64 static INLINE
void *os_mmap(void *addr
, size_t length
, int prot
, int flags
, int fd
, loff_t offset
)
66 /* offset must be aligned to 4096 (not necessarily the page size) */
67 if (unlikely(offset
& 4095)) {
72 return __mmap2(addr
, length
, prot
, flags
, fd
, (size_t) (offset
>> 12));
76 /* assume large file support exists */
77 # define os_mmap(addr, length, prot, flags, fd, offset) mmap(addr, length, prot, flags, fd, offset)
80 #define os_munmap(addr, length) munmap(addr, length)
87 #endif /* _OS_MMAN_H_ */