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
  23#ifndef CONFIG_USER_ONLY
  24#include "exec/softmmu_exec.h"
  25#define MMUSUFFIX _mmu
  26
  27#define SHIFT 0
  28#include "exec/softmmu_template.h"
  29
  30#define SHIFT 1
  31#include "exec/softmmu_template.h"
  32
  33#define SHIFT 2
  34#include "exec/softmmu_template.h"
  35
  36#define SHIFT 3
  37#include "exec/softmmu_template.h"
  38
  39void tlb_fill(CPUOpenRISCState *env, target_ulong addr, int is_write,
  40              int mmu_idx, uintptr_t retaddr)
  41{
  42    int ret;
  43
  44    ret = cpu_openrisc_handle_mmu_fault(env, addr, is_write, mmu_idx);
  45
  46    if (ret) {
  47        if (retaddr) {
  48            /* now we have a real cpu fault.  */
  49            cpu_restore_state(env, retaddr);
  50        }
  51        /* Raise Exception.  */
  52        cpu_loop_exit(env);
  53    }
  54}
  55#endif
  56