/* Definitions for POSIX memory map interface. Linux/HPPA version.
- Copyright (C) 1997, 1998, 2000, 2003 Free Software Foundation, Inc.
+ Copyright (C) 1997-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
#ifndef _SYS_MMAN_H
# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
#endif
-/* these are basically taken from the kernel definitions */
+/* These are taken from the kernel definitions. */
-#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_NONE 0x0 /* page can not be accessed */
-#define PROT_GROWSDOWN 0x01000000 /* Extend change to start of
- growsdown vma (mprotect only). */
-#define PROT_GROWSUP 0x02000000 /* Extend change to start of
- growsup vma (mprotect only). */
-
-#define MAP_SHARED 0x01 /* Share changes */
-#define MAP_PRIVATE 0x02 /* Changes are private */
-#define MAP_TYPE 0x03 /* Mask for type of mapping */
-#define MAP_FIXED 0x04 /* Interpret addr exactly */
-#define MAP_ANONYMOUS 0x10 /* don't use a file */
+/* Other flags. */
+#define __MAP_ANONYMOUS 0x10 /* Don't use a file */
+#ifdef __USE_MISC
+# define MAP_VARIABLE 0
+#endif
-#define MAP_DENYWRITE 0x0800 /* ETXTBSY */
-#define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
-#define MAP_LOCKED 0x2000 /* pages are locked */
-#define MAP_NORESERVE 0x4000 /* don't check for reservations */
-#define MAP_GROWSDOWN 0x8000 /* stack-like segment */
-#define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
-#define MAP_NONBLOCK 0x20000 /* do not block on IO */
+/* These are Linux-specific. */
+#ifdef __USE_MISC
+# define MAP_DENYWRITE 0x0800 /* ETXTBSY */
+# define MAP_EXECUTABLE 0x1000 /* Mark it as an executable */
+# define MAP_LOCKED 0x2000 /* Pages are locked */
+# define MAP_NORESERVE 0x4000 /* Don't check for reservations */
+# define MAP_GROWSDOWN 0x8000 /* Stack-like segment */
+# define MAP_POPULATE 0x10000 /* Populate (prefault) pagetables */
+# define MAP_NONBLOCK 0x20000 /* Do not block on IO */
+# define MAP_STACK 0x40000 /* Create for process/thread stacks */
+# define MAP_HUGETLB 0x80000 /* Create a huge page mapping */
+# define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED but do not unmap
+ underlying mapping. */
+#endif
-#define MS_SYNC 1 /* synchronous memory sync */
-#define MS_ASYNC 2 /* sync memory asynchronously */
-#define MS_INVALIDATE 4 /* invalidate the caches */
+/* Advice to "madvise" */
+#ifdef __USE_MISC
+# define MADV_SOFT_OFFLINE 101 /* Soft offline page for testing. */
+#endif
-#define MCL_CURRENT 1 /* lock all current mappings */
-#define MCL_FUTURE 2 /* lock all future mappings */
+#include <bits/mman-linux.h>
-#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_DONTNEED 4 /* dont need these pages */
-#define MADV_SPACEAVAIL 5 /* insure that resources are reserved */
-#define MADV_VPS_PURGE 6 /* Purge pages from VM page cache */
-#define MADV_VPS_INHERIT 7 /* Inherit parents page size */
+#ifdef __USE_MISC
+# undef MAP_TYPE
+# define MAP_TYPE 0x2b /* Mask for type of mapping */
+#endif
-/* The range 12-64 is reserved for page size specification. */
-#define MADV_4K_PAGES 12 /* Use 4K pages */
-#define MADV_16K_PAGES 14 /* Use 16K pages */
-#define MADV_64K_PAGES 16 /* Use 64K pages */
-#define MADV_256K_PAGES 18 /* Use 256K pages */
-#define MADV_1M_PAGES 20 /* Use 1 Megabyte pages */
-#define MADV_4M_PAGES 22 /* Use 4 Megabyte pages */
-#define MADV_16M_PAGES 24 /* Use 16 Megabyte pages */
-#define MADV_64M_PAGES 26 /* Use 64 Megabyte pages */
+#undef MAP_FIXED
+#define MAP_FIXED 0x04 /* Interpret addr exactly */
-/* compatibility flags */
-#define MAP_ANON MAP_ANONYMOUS
-#define MAP_FILE 0
-#define MAP_VARIABLE 0
+/* Flags to "msync" */
+#undef MS_SYNC
+#define MS_SYNC 1 /* Synchronous memory sync */
+#undef MS_ASYNC
+#define MS_ASYNC 2 /* Sync memory asynchronously */
+#undef MS_INVALIDATE
+#define MS_INVALIDATE 4 /* Invalidate the caches */
-/* Flags for `mremap'. */
-#ifdef __USE_GNU
-# define MREMAP_MAYMOVE 1
+/* Advice to "madvise" */
+#ifdef __USE_MISC
+# undef MADV_MERGEABLE
+# define MADV_MERGEABLE 65 /* KSM may merge identical pages */
+# undef MADV_UNMERGEABLE
+# define MADV_UNMERGEABLE 66 /* KSM may not merge identical pages */
+# undef MADV_HUGEPAGE
+# define MADV_HUGEPAGE 67 /* Worth backing with hugepages */
+# undef MADV_NOHUGEPAGE
+# define MADV_NOHUGEPAGE 68 /* Not worth backing with hugepages */
+# undef MADV_DONTDUMP
+# define MADV_DONTDUMP 69 /* Explicity exclude from the core dump,
+ overrides the coredump filter bits */
+# undef MADV_DODUMP
+# define MADV_DODUMP 70 /* Clear the MADV_NODUMP flag */
+# undef MADV_WIPEONFORK
+# define MADV_WIPEONFORK 71 /* Zero memory on fork, child only. */
+# undef MADV_KEEPONFORK
+# define MADV_KEEPONFORK 72 /* Undo MADV_WIPEONFORK. */
#endif
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