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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/xtensa
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/xtensa')
-rw-r--r--libc/sysdeps/linux/xtensa/bits/mman.h84
1 files changed, 11 insertions, 73 deletions
diff --git a/libc/sysdeps/linux/xtensa/bits/mman.h b/libc/sysdeps/linux/xtensa/bits/mman.h
index a42e92663..60be03bda 100644
--- a/libc/sysdeps/linux/xtensa/bits/mman.h
+++ b/libc/sysdeps/linux/xtensa/bits/mman.h
@@ -1,6 +1,5 @@
/* Definitions for POSIX memory map interface. Linux/Xtensa version.
- Copyright (C) 1997, 2000, 2007 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
@@ -20,86 +19,25 @@
# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
#endif
-/* 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 0x10 /* Interpret addr exactly. */
-#ifdef __USE_MISC
-# define MAP_FILE 0
-# define MAP_ANONYMOUS 0x800 /* Don't use a file. */
-# define MAP_ANON MAP_ANONYMOUS
-# define MAP_RENAME MAP_ANONYMOUS
-#endif
-
/* These are Linux-specific. */
#ifdef __USE_MISC
+# define MAP_NORESERVE 0x0400 /* Don't check for reservations. */
# define MAP_GROWSDOWN 0x1000 /* Stack-like segment. */
-# define MAP_DENYWRITE 0x2000 /* ETXTBSY */
+# define MAP_DENYWRITE 0x2000 /* ETXTBSY */
# define MAP_EXECUTABLE 0x4000 /* Mark it as an executable. */
# define MAP_LOCKED 0x8000 /* Lock the mapping. */
-# define MAP_NORESERVE 0x0400 /* Don't check for reservations. */
# define MAP_POPULATE 0x10000 /* Populate (prefault) pagetables. */
# define MAP_NONBLOCK 0x20000 /* Do not block on IO. */
-# define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could
- be uninitialized. */
+# define MAP_STACK 0x40000 /* Allocation is for a stack. */
+# define MAP_HUGETLB 0x80000 /* Create huge page mapping. */
+# define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could - be uninitialized. */
#endif
-/* Flags to `msync'. */
-#define MS_ASYNC 1 /* Sync memory asynchronously. */
-#define MS_SYNC 4 /* Synchronous memory sync. */
-#define MS_INVALIDATE 2 /* Invalidate the caches. */
+#define __MAP_ANONYMOUS 0x0800 /* Don't use a file */
-/* Flags for `mlockall'. */
-#define MCL_CURRENT 1 /* Lock all currently mapped pages. */
-#define MCL_FUTURE 2 /* Lock all additions to address
- space. */
-
-/* Flags for `mremap'. */
-#ifdef __USE_GNU
-# define MREMAP_MAYMOVE 1
-# define MREMAP_FIXED 2
-#endif
+/* Include generic Linux declarations. */
+#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 4 /* 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
-
-/* 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 4 /* Don't need these pages. */
+#ifdef __USE_MISC
+# define MAP_RENAME MAP_ANONYMOUS
#endif