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Diffstat (limited to 'include/asm-xtensa/mman.h')
-rw-r--r-- | include/asm-xtensa/mman.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/include/asm-xtensa/mman.h b/include/asm-xtensa/mman.h new file mode 100644 index 000000000000..9a95a45df996 --- /dev/null +++ b/include/asm-xtensa/mman.h | |||
@@ -0,0 +1,80 @@ | |||
1 | /* | ||
2 | * include/asm-xtensa/mman.h | ||
3 | * | ||
4 | * Xtensa Processor memory-manager definitions | ||
5 | * | ||
6 | * This file is subject to the terms and conditions of the GNU General Public | ||
7 | * License. See the file "COPYING" in the main directory of this archive | ||
8 | * for more details. | ||
9 | * | ||
10 | * Copyright (C) 1995 by Ralf Baechle | ||
11 | * Copyright (C) 2001 - 2005 Tensilica Inc. | ||
12 | */ | ||
13 | |||
14 | #ifndef _XTENSA_MMAN_H | ||
15 | #define _XTENSA_MMAN_H | ||
16 | |||
17 | /* | ||
18 | * Protections are chosen from these bits, OR'd together. The | ||
19 | * implementation does not necessarily support PROT_EXEC or PROT_WRITE | ||
20 | * without PROT_READ. The only guarantees are that no writing will be | ||
21 | * allowed without PROT_WRITE and no access will be allowed for PROT_NONE. | ||
22 | */ | ||
23 | |||
24 | #define PROT_NONE 0x0 /* page can not be accessed */ | ||
25 | #define PROT_READ 0x1 /* page can be read */ | ||
26 | #define PROT_WRITE 0x2 /* page can be written */ | ||
27 | #define PROT_EXEC 0x4 /* page can be executed */ | ||
28 | |||
29 | #define PROT_SEM 0x10 /* page may be used for atomic ops */ | ||
30 | #define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ | ||
31 | #define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end fo growsup vma */ | ||
32 | |||
33 | /* | ||
34 | * Flags for mmap | ||
35 | */ | ||
36 | #define MAP_SHARED 0x001 /* Share changes */ | ||
37 | #define MAP_PRIVATE 0x002 /* Changes are private */ | ||
38 | #define MAP_TYPE 0x00f /* Mask for type of mapping */ | ||
39 | #define MAP_FIXED 0x010 /* Interpret addr exactly */ | ||
40 | |||
41 | /* not used by linux, but here to make sure we don't clash with ABI defines */ | ||
42 | #define MAP_RENAME 0x020 /* Assign page to file */ | ||
43 | #define MAP_AUTOGROW 0x040 /* File may grow by writing */ | ||
44 | #define MAP_LOCAL 0x080 /* Copy on fork/sproc */ | ||
45 | #define MAP_AUTORSRV 0x100 /* Logical swap reserved on demand */ | ||
46 | |||
47 | /* These are linux-specific */ | ||
48 | #define MAP_NORESERVE 0x0400 /* don't check for reservations */ | ||
49 | #define MAP_ANONYMOUS 0x0800 /* don't use a file */ | ||
50 | #define MAP_GROWSDOWN 0x1000 /* stack-like segment */ | ||
51 | #define MAP_DENYWRITE 0x2000 /* ETXTBSY */ | ||
52 | #define MAP_EXECUTABLE 0x4000 /* mark it as an executable */ | ||
53 | #define MAP_LOCKED 0x8000 /* pages are locked */ | ||
54 | #define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */ | ||
55 | #define MAP_NONBLOCK 0x20000 /* do not block on IO */ | ||
56 | |||
57 | /* | ||
58 | * Flags for msync | ||
59 | */ | ||
60 | #define MS_ASYNC 0x0001 /* sync memory asynchronously */ | ||
61 | #define MS_INVALIDATE 0x0002 /* invalidate mappings & caches */ | ||
62 | #define MS_SYNC 0x0004 /* synchronous memory sync */ | ||
63 | |||
64 | /* | ||
65 | * Flags for mlockall | ||
66 | */ | ||
67 | #define MCL_CURRENT 1 /* lock all current mappings */ | ||
68 | #define MCL_FUTURE 2 /* lock all future mappings */ | ||
69 | |||
70 | #define MADV_NORMAL 0x0 /* default page-in behavior */ | ||
71 | #define MADV_RANDOM 0x1 /* page-in minimum required */ | ||
72 | #define MADV_SEQUENTIAL 0x2 /* read-ahead aggressively */ | ||
73 | #define MADV_WILLNEED 0x3 /* pre-fault pages */ | ||
74 | #define MADV_DONTNEED 0x4 /* discard these pages */ | ||
75 | |||
76 | /* compatibility flags */ | ||
77 | #define MAP_ANON MAP_ANONYMOUS | ||
78 | #define MAP_FILE 0 | ||
79 | |||
80 | #endif /* _XTENSA_MMAN_H */ | ||