src/system/kernel/arch/m68k/arch_040_mmu.cpp

   1 /*
   2  * Copyright 2007, Haiku Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              François Revol <revol@free.fr>
   7  */
   8
   9 #include <arch/cpu.h>
  10
  11 #include <arch_040_mmu.h>
  12
  13 #define ARCH_M68K_MMU_TYPE 68040
  14
  15 #include "arch_vm_translation_map_impl.cpp"
  16
  17 static void
  18 set_pgdir(void *rt)
  19 {
  20         uint32 rp;
  21         rp = (uint32)rt & ~((1 << 9) - 1);
  22
  23         asm volatile(          \
  24                 "movec %0,%%srp\n" \
  25                 "movec %0,%%urp\n" \
  26                 : : "d"(rp));
  27
  28 }
  29
  30
  31 struct m68k_vm_ops m68040_vm_ops = {
  32         _m68k_translation_map_get_pgdir,
  33         m68k_vm_translation_map_init_map,
  34         m68k_vm_translation_map_init_kernel_map_post_sem,
  35         m68k_vm_translation_map_init,
  36         m68k_vm_translation_map_init_post_area,
  37         m68k_vm_translation_map_init_post_sem,
  38         m68k_vm_translation_map_early_map,
  39         /*m68k_vm_translation_map_*/early_query,
  40         set_pgdir,
  41 #if 0
  42         m68k_map_address_range,
  43         m68k_unmap_address_range,
  44         m68k_remap_address_range
  45 #endif
  46         m68k_vm_translation_map_is_kernel_page_accessible
  47 };