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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2018-01-28 04:30:35 +0000
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2018-02-03 19:29:51 +0000
commit7cc754bc93eafa78695ec03bb0e4e8256d52c76d (patch)
treedc55c7555ce60aa779ea6e71c5856e4d6db74a6c /libc/sysdeps/linux/alpha/bits/mman.h
parent8948296356072119a07c6b9435dc16bdc74bdc56 (diff)
bits/mman.h: consolidate header file
Sync with GNU C library and consolidate duplicate non architecture specific defines. MAP_UNINITIALIZED is only defined to 0x4000000 and used by the Linux kernel when CONFIG_MMAP_ALLOW_UNINITIALIZED is enabled. CONFIG_MMAP_ALLOW_UNINITIALIZED is only available for nommu. See Documentation/nommu-mmap.txt.
Diffstat (limited to 'libc/sysdeps/linux/alpha/bits/mman.h')
-rw-r--r--libc/sysdeps/linux/alpha/bits/mman.h104
1 files changed, 25 insertions, 79 deletions
diff --git a/libc/sysdeps/linux/alpha/bits/mman.h b/libc/sysdeps/linux/alpha/bits/mman.h
index a9820d596..7d9b622af 100644
--- a/libc/sysdeps/linux/alpha/bits/mman.h
+++ b/libc/sysdeps/linux/alpha/bits/mman.h
@@ -1,6 +1,5 @@
/* Definitions for POSIX memory map interface. Linux/Alpha version.
- Copyright (C) 1997, 1998, 2000, 2003, 2006 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
+ Copyright (C) 1997-2018 Free Software Foundation, Inc.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -13,7 +12,7 @@
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, see
+ License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_MMAN_H
@@ -23,43 +22,7 @@
/* The following definitions basically come from the kernel headers.
But the kernel header is not namespace clean. */
-
-/* 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_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). */
-
-/* Sharing types (must choose one and only one of these). */
-#define MAP_SHARED 0x01 /* Share changes. */
-#define MAP_PRIVATE 0x02 /* Changes are private. */
-#ifdef __USE_MISC
-# define MAP_TYPE 0x0f /* Mask for type of mapping. */
-#endif
-
-/* Other flags. */
-#define MAP_FIXED 0x100 /* Interpret addr exactly. */
-#ifdef __USE_MISC
-# define MAP_FILE 0
-# define MAP_ANONYMOUS 0x10 /* Don't use a file. */
-# define MAP_ANON MAP_ANONYMOUS
-#endif
-
-/* Not used by Linux, but here to make sure we don't clash with
- OSF/1 defines. */
-#if 0 && defined __USE_BSD
-# define MAP_HASSEMAPHORE 0x0200
-# define MAP_INHERIT 0x0400
-# define MAP_UNALIGNED 0x0800
-#endif
+#define __MAP_ANONYMOUS 0x10 /* Don't use a file. */
/* These are Linux-specific. */
#ifdef __USE_MISC
@@ -70,50 +33,33 @@
# 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 MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could
- be uninitialized. */
+# define MAP_STACK 0x80000 /* Allocation is for a stack. */
+# define MAP_HUGETLB 0x100000 /* Create huge page mapping. */
#endif
-/* Flags to `msync'. */
-#define MS_ASYNC 1 /* Sync memory asynchronously. */
-#define MS_SYNC 2 /* Synchronous memory sync. */
-#define MS_INVALIDATE 4 /* Invalidate the caches. */
-
/* Flags for `mlockall'. */
-#define MCL_CURRENT 8192 /* Lock all currently mapped pages. */
-#define MCL_FUTURE 16384 /* Lock all additions to address
- space. */
+#define MCL_CURRENT 8192
+#define MCL_FUTURE 16384
+#define MCL_ONFAULT 32768
-/* Flags for `mremap'. */
-#ifdef __USE_GNU
-# define MREMAP_MAYMOVE 1
-# define MREMAP_FIXED 2
-#endif
+#include <bits/mman-linux.h>
-/* Advice to `madvise'. */
-#ifdef __USE_BSD
-# 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 6 /* Don't need these pages. */
-# define MADV_REMOVE 9 /* Remove these pages and resources. */
-# define MADV_DONTFORK 10 /* Do not inherit across fork. */
-# define MADV_DOFORK 11 /* Do inherit across fork. */
-#endif
+/* Values that differ from standard <mman-linux.h>. For the most part newer
+ values are shared, but older values are skewed. */
-/* The POSIX people had to invent similar names for the same things. */
-#ifdef __USE_XOPEN2K
-# define POSIX_MADV_NORMAL 0 /* No further special treatment. */
-# define POSIX_MADV_RANDOM 1 /* Expect random page references. */
-# define POSIX_MADV_SEQUENTIAL 2 /* Expect sequential page references. */
-# define POSIX_MADV_WILLNEED 3 /* Will need these pages. */
-# define POSIX_MADV_DONTNEED 6 /* Don't need these pages. */
-#endif
+#undef MAP_FIXED
+#define MAP_FIXED 0x100
-/* Not used by Linux, but here to make sure we don't clash with
- OSF/1 defines. */
-#if 0 && defined __USE_BSD
-# define MADV_DONTNEED_COMPAT 4 /* Old version? */
-# define MADV_SPACEAVAIL 5 /* Ensure resources are available. */
+#undef MS_SYNC
+#define MS_SYNC 2
+#undef MS_INVALIDATE
+#define MS_INVALIDATE 4
+
+#ifdef __USE_MISC
+# undef MADV_DONTNEED
+# define MADV_DONTNEED 6
+#endif
+#ifdef __USE_XOPEN2K
+# undef POSIX_MADV_DONTNEED
+# define POSIX_MADV_DONTNEED 6
#endif