LXR qemu/target-openrisc/mmu

   1/*
   2 * OpenRISC MMU helper routines
   3 *
   4 * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
   5 *                         Zhizhou Zhang <etouzh@gmail.com>
   6 *
   7 * This library is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU Lesser General Public
   9 * License as published by the Free Software Foundation; either
  10 * version 2 of the License, or (at your option) any later version.
  11 *
  12 * This library is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 * Lesser General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU Lesser General Public
  18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21#include "cpu.h"
  22#include "exec/cpu_ldst.h"
  23
  24#ifndef CONFIG_USER_ONLY
  25
  26void tlb_fill(CPUState *cs, target_ulong addr, int is_write,
  27              int mmu_idx, uintptr_t retaddr)
  28{
  29    int ret;
  30
  31    ret = openrisc_cpu_handle_mmu_fault(cs, addr, is_write, mmu_idx);
  32
  33    if (ret) {
  34        if (retaddr) {
  35            /* now we have a real cpu fault.  */
  36            cpu_restore_state(cs, retaddr);
  37        }
  38        /* Raise Exception.  */
  39        cpu_loop_exit(cs);
  40    }
  41}
  42#endif
  43