diff options
Diffstat (limited to 'include/asm-alpha/mman.h')
| -rw-r--r-- | include/asm-alpha/mman.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/asm-alpha/mman.h b/include/asm-alpha/mman.h new file mode 100644 index 00000000000..eb9c279045e --- /dev/null +++ b/include/asm-alpha/mman.h @@ -0,0 +1,50 @@ +#ifndef __ALPHA_MMAN_H__ +#define __ALPHA_MMAN_H__ + +#define PROT_READ 0x1 /* page can be read */ +#define PROT_WRITE 0x2 /* page can be written */ +#define PROT_EXEC 0x4 /* page can be executed */ +#define PROT_SEM 0x8 /* page may be used for atomic ops */ +#define PROT_NONE 0x0 /* page can not be accessed */ +#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ +#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ + +#define MAP_SHARED 0x01 /* Share changes */ +#define MAP_PRIVATE 0x02 /* Changes are private */ +#define MAP_TYPE 0x0f /* Mask for type of mapping (OSF/1 is _wrong_) */ +#define MAP_FIXED 0x100 /* Interpret addr exactly */ +#define MAP_ANONYMOUS 0x10 /* don't use a file */ + +/* not used by linux, but here to make sure we don't clash with OSF/1 defines */ +#define _MAP_HASSEMAPHORE 0x0200 +#define _MAP_INHERIT 0x0400 +#define _MAP_UNALIGNED 0x0800 + +/* These are linux-specific */ +#define MAP_GROWSDOWN 0x01000 /* stack-like segment */ +#define MAP_DENYWRITE 0x02000 /* ETXTBSY */ +#define MAP_EXECUTABLE 0x04000 /* mark it as an executable */ +#define MAP_LOCKED 0x08000 /* lock the mapping */ +#define MAP_NORESERVE 0x10000 /* don't check for reservations */ +#define MAP_POPULATE 0x20000 /* populate (prefault) pagetables */ +#define MAP_NONBLOCK 0x40000 /* do not block on IO */ + +#define MS_ASYNC 1 /* sync memory asynchronously */ +#define MS_SYNC 2 /* synchronous memory sync */ +#define MS_INVALIDATE 4 /* invalidate the caches */ + +#define MCL_CURRENT 8192 /* lock all currently mapped pages */ +#define MCL_FUTURE 16384 /* lock all additions to address space */ + +#define MADV_NORMAL 0 /* no further special treatment */ +#define MADV_RANDOM 1 /* expect random page references */ +#define MADV_SEQUENTIAL 2 /* expect sequential page references */ +#define MADV_WILLNEED 3 /* will need these pages */ +#define MADV_SPACEAVAIL 5 /* ensure resources are available */ +#define MADV_DONTNEED 6 /* don't need these pages */ + +/* compatibility flags */ +#define MAP_ANON MAP_ANONYMOUS +#define MAP_FILE 0 + +#endif /* __ALPHA_MMAN_H__ */ |