sysdeps/unix/sysv/linux/hppa/bits/mman.h

   1 /* Definitions for POSIX memory map interface.  Linux/HPPA version.
   2    Copyright (C) 1997-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _SYS_MMAN_H
  20 # error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
  21 #endif
  22
  23 /* These are taken from the kernel definitions.  */
  24
  25 /* Other flags.  */
  26 #define __MAP_ANONYMOUS 0x10            /* Don't use a file */
  27 #ifdef __USE_MISC
  28 # define MAP_VARIABLE   0
  29 #endif
  30
  31 /* These are Linux-specific.  */
  32 #ifdef __USE_MISC
  33 # define MAP_DENYWRITE  0x0800          /* ETXTBSY */
  34 # define MAP_EXECUTABLE 0x1000          /* Mark it as an executable */
  35 # define MAP_LOCKED     0x2000          /* Pages are locked */
  36 # define MAP_NORESERVE  0x4000          /* Don't check for reservations */
  37 # define MAP_GROWSDOWN  0x8000          /* Stack-like segment */
  38 # define MAP_POPULATE   0x10000         /* Populate (prefault) pagetables */
  39 # define MAP_NONBLOCK   0x20000         /* Do not block on IO */
  40 # define MAP_STACK      0x40000         /* Create for process/thread stacks */
  41 # define MAP_HUGETLB    0x80000         /* Create a huge page mapping */
  42 # define MAP_FIXED_NOREPLACE 0x100000   /* MAP_FIXED but do not unmap
  43                                            underlying mapping.  */
  44 #endif
  45
  46 /* Advice to "madvise"  */
  47 #ifdef __USE_MISC
  48 # define MADV_SOFT_OFFLINE 101  /* Soft offline page for testing.  */
  49 #endif
  50
  51 #include <bits/mman-linux.h>
  52
  53 #ifdef __USE_MISC
  54 # undef MAP_TYPE
  55 # define MAP_TYPE       0x2b            /* Mask for type of mapping */
  56 #endif
  57
  58 #undef MAP_FIXED
  59 #define MAP_FIXED       0x04            /* Interpret addr exactly */
  60
  61 /* Flags to "msync"  */
  62 #undef MS_SYNC
  63 #define MS_SYNC         1               /* Synchronous memory sync */
  64 #undef MS_ASYNC
  65 #define MS_ASYNC        2               /* Sync memory asynchronously */
  66 #undef MS_INVALIDATE
  67 #define MS_INVALIDATE   4               /* Invalidate the caches */
  68
  69 /* Advice to "madvise"  */
  70 #ifdef __USE_MISC
  71 # undef MADV_MERGEABLE
  72 # define MADV_MERGEABLE   65    /* KSM may merge identical pages */
  73 # undef MADV_UNMERGEABLE
  74 # define MADV_UNMERGEABLE 66    /* KSM may not merge identical pages */
  75 # undef MADV_HUGEPAGE
  76 # define MADV_HUGEPAGE   67     /* Worth backing with hugepages */
  77 # undef MADV_NOHUGEPAGE
  78 # define MADV_NOHUGEPAGE 68     /* Not worth backing with hugepages */
  79 # undef MADV_DONTDUMP
  80 # define MADV_DONTDUMP   69     /* Explicity exclude from the core dump,
  81                                    overrides the coredump filter bits */
  82 # undef MADV_DODUMP
  83 # define MADV_DODUMP     70     /* Clear the MADV_NODUMP flag */
  84 # undef MADV_WIPEONFORK
  85 # define MADV_WIPEONFORK 71     /* Zero memory on fork, child only.  */
  86 # undef MADV_KEEPONFORK
  87 # define MADV_KEEPONFORK 72     /* Undo MADV_WIPEONFORK.  */
  88 #endif