LXR qemu/target-ppc/user_only

   1/*
   2 *  PowerPC MMU stub handling for user mode emulation
   3 *
   4 *  Copyright (c) 2003-2007 Jocelyn Mayer
   5 *  Copyright (c) 2013 David Gibson, IBM Corporation.
   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 "qemu/osdep.h"
  22#include "cpu.h"
  23
  24int ppc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
  25                             int mmu_idx)
  26{
  27    PowerPCCPU *cpu = POWERPC_CPU(cs);
  28    CPUPPCState *env = &cpu->env;
  29    int exception, error_code;
  30
  31    if (rw == 2) {
  32        exception = POWERPC_EXCP_ISI;
  33        error_code = 0x40000000;
  34    } else {
  35        exception = POWERPC_EXCP_DSI;
  36        error_code = 0x40000000;
  37        if (rw) {
  38            error_code |= 0x02000000;
  39        }
  40        env->spr[SPR_DAR] = address;
  41        env->spr[SPR_DSISR] = error_code;
  42    }
  43    cs->exception_index = exception;
  44    env->error_code = error_code;
  45
  46    return 1;
  47}
  48