1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/************************************************************************** 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright 2011 LunarG, Inc. 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * All Rights Reserved. 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining a 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * copy of this software and associated documentation files (the 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * "Software"), to deal in the Software without restriction, including 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * without limitation the rights to use, copy, modify, merge, publish, 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * distribute, sub license, and/or sell copies of the Software, and to 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * permit persons to whom the Software is furnished to do so, subject to 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the following conditions: 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice (including the 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * next paragraph) shall be included in all copies or substantial portions 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * of the Software. 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org **************************************************************************/ 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * @file 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * OS independent memory mapping (with large file support). 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * @author Chia-I Wu <olvaffe@gmail.com> 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#ifndef _OS_MMAN_H_ 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define _OS_MMAN_H_ 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "pipe/p_config.h" 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "pipe/p_compiler.h" 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#if defined(PIPE_OS_UNIX) 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org# ifndef _FILE_OFFSET_BITS 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org# error _FILE_OFFSET_BITS must be defined to 64 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org# endif 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org# include <sys/mman.h> 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#else 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org# error Unsupported OS 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#endif 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#if defined(PIPE_OS_ANDROID) 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org# include <errno.h> /* for EINVAL */ 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#endif 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#ifdef __cplusplus 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgextern "C" { 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#endif 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#if defined(PIPE_OS_ANDROID) 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgextern void *__mmap2(void *, size_t, int, int, int, size_t); 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic INLINE void *os_mmap(void *addr, size_t length, int prot, int flags, int fd, loff_t offset) 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* offset must be aligned to 4096 (not necessarily the page size) */ 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (unlikely(offset & 4095)) { 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org errno = EINVAL; 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return MAP_FAILED; 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return __mmap2(addr, length, prot, flags, fd, (size_t) (offset >> 12)); 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#else 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* assume large file support exists */ 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org# define os_mmap(addr, length, prot, flags, fd, offset) mmap(addr, length, prot, flags, fd, offset) 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#endif 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define os_munmap(addr, length) munmap(addr, length) 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#ifdef __cplusplus 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 85f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#endif 86f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 87f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#endif /* _OS_MMAN_H_ */ 88