arch/all-unix/kernel/allocpages.c

   1 /*
   2     Copyright © 1995-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <aros/libcall.h>
   7
   8 #include <kernel_base.h>
   9 #include <kernel_intern.h>
  10
  11 #include <sys/mman.h>
  12 #include <inttypes.h>
  13
  14 AROS_LH3I(void *, KrnAllocPages,
  15          AROS_LHA(uint32_t, length, D0),
  16          AROS_LHA(uint32_t, flags, D1),
  17          AROS_LHA(KRN_MapAttr, protection, D2),
  18          struct KernelBase *, KernelBase, 27, Kernel)
  19 {
  20     AROS_LIBFUNC_INIT
  21
  22     int flags_unix = 0;
  23     void *map = 0;
  24
  25     if (protection & MAP_Readable)
  26         flags_unix |= PROT_READ;
  27     if (protection & MAP_Writable)
  28         flags_unix |= PROT_WRITE;
  29     if (protection & MAP_Executable)
  30         flags_unix |= PROT_EXEC;
  31
  32     /* Darwin does not define MAP_ANONYMOUS */
  33     map = KernelIFace.mmap(NULL, length, flags_unix, MAP_PRIVATE | MAP_ANON, -1, 0);
  34     AROS_HOST_BARRIER
  35
  36     return map;
  37
  38     AROS_LIBFUNC_EXIT
  39 }