sysdeps/mach/mips/cacheflush.c

   1 /* Flush the insn cache after GCC writes a closure on the stack.  Mach/MIPS.
   2    Copyright (C) 1996, 1997 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <mach.h>
  21 #include <mach/vm_attributes.h>
  22
  23 /* Stupid name, but this is what GCC generates (config/mips/mips.h).  */
  24 void
  25 cacheflush (void *addr, unsigned size, int flag)
  26 {
  27   vm_machine_attribute_val_t val;
  28
  29   switch (flag)
  30     {
  31     case 0:                     /* ? */
  32       val = MATTR_VAL_DCACHE_FLUSH;
  33     case 1:                     /* This is the only value GCC uses.  */
  34       val = MATTR_VAL_ICACHE_FLUSH;
  35       break;
  36     default:
  37       val = MATTR_VAL_CACHE_FLUSH;
  38     }
  39
  40   __vm_machine_attribute (__mach_task_self (),
  41                           (vm_address_t) addr, size,
  42                           MATTR_CACHE,
  43                           &val);
  44 }