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/* * Linux/MIPS memory manager definitions * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1995 by Ralf Baechle */ #ifndef __ASM_MIPS_MMAN_H #define __ASM_MIPS_MMAN_H /* * Protections are chosen from these bits, OR'd together. The * implementation does not necessarily support PROT_EXEC or PROT_WRITE * without PROT_READ. The only guarantees are that no writing will be * allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */ #define PROT_NONE 0x0 /* page can not be accessed */ #define PROT_READ 0x1 /* page can be read */ #define PROT_WRITE 0x2 /* page can be written */ #define PROT_EXEC 0x4 /* page can be executed */ /* * Flags for mmap */ #define MAP_SHARED 0x001 /* Share changes */ #define MAP_PRIVATE 0x002 /* Changes are private */ #define MAP_TYPE 0x00f /* Mask for type of mapping */ #define MAP_FIXED 0x010 /* Interpret addr exactly */ /* not used by linux, but here to make sure we don't clash with ABI defines */ #define MAP_RENAME 0x020 /* Assign page to file */ #define MAP_AUTOGROW 0x040 /* File may grow by writing */ #define MAP_LOCAL 0x080 /* Copy on fork/sproc */ #define MAP_AUTORSRV 0x100 /* Logical swap reserved on demand */ /* These are linux-specific */ #define MAP_ANONYMOUS 0x0800 /* don't use a file */ #define MAP_GROWSDOWN 0x1000 /* stack-like segment */ #define MAP_DENYWRITE 0x2000 /* ETXTBSY */ #define MAP_EXECUTABLE 0x4000 /* mark it as a executable */ #define MAP_LOCKED 0x8000 /* pages are locked */ /* * Flags for msync */ #define MS_SYNC 0 /* synchronous memory sync */ #define MS_ASYNC 1 /* sync memory asynchronously */ #define MS_INVALIDATE 2 /* invalidate mappings & caches */ /* * Flags for mlockall */ #define MCL_CURRENT 1 /* lock all current mappings */ #define MCL_FUTURE 2 /* lock all future mappings */ /* compatibility flags */ #define MAP_ANON MAP_ANONYMOUS #define MAP_FILE 0 #endif /* __ASM_MIPS_MMAN_H */ |