LXR qemu/target-cris/cpu.c

   1/*
   2 * QEMU CRIS CPU
   3 *
   4 * Copyright (c) 2008 AXIS Communications AB
   5 * Written by Edgar E. Iglesias.
   6 *
   7 * Copyright (c) 2012 SUSE LINUX Products GmbH
   8 *
   9 * This library is free software; you can redistribute it and/or
  10 * modify it under the terms of the GNU Lesser General Public
  11 * License as published by the Free Software Foundation; either
  12 * version 2.1 of the License, or (at your option) any later version.
  13 *
  14 * This library is distributed in the hope that it will be useful,
  15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17 * Lesser General Public License for more details.
  18 *
  19 * You should have received a copy of the GNU Lesser General Public
  20 * License along with this library; if not, see
  21 * <http://www.gnu.org/licenses/lgpl-2.1.html>
  22 */
  23
  24#include "cpu.h"
  25#include "qemu-common.h"
  26#include "mmu.h"
  27
  28
  29/* CPUClass::reset() */
  30static void cris_cpu_reset(CPUState *s)
  31{
  32    CRISCPU *cpu = CRIS_CPU(s);
  33    CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(cpu);
  34    CPUCRISState *env = &cpu->env;
  35    uint32_t vr;
  36
  37    if (qemu_loglevel_mask(CPU_LOG_RESET)) {
  38        qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
  39        log_cpu_state(env, 0);
  40    }
  41
  42    ccc->parent_reset(s);
  43
  44    vr = env->pregs[PR_VR];
  45    memset(env, 0, offsetof(CPUCRISState, breakpoints));
  46    env->pregs[PR_VR] = vr;
  47    tlb_flush(env, 1);
  48
  49#if defined(CONFIG_USER_ONLY)
  50    /* start in user mode with interrupts enabled.  */
  51    env->pregs[PR_CCS] |= U_FLAG | I_FLAG | P_FLAG;
  52#else
  53    cris_mmu_init(env);
  54    env->pregs[PR_CCS] = 0;
  55#endif
  56}
  57
  58static void cris_cpu_initfn(Object *obj)
  59{
  60    CRISCPU *cpu = CRIS_CPU(obj);
  61    CPUCRISState *env = &cpu->env;
  62
  63    cpu_exec_init(env);
  64}
  65
  66static void cris_cpu_class_init(ObjectClass *oc, void *data)
  67{
  68    CPUClass *cc = CPU_CLASS(oc);
  69    CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
  70
  71    ccc->parent_reset = cc->reset;
  72    cc->reset = cris_cpu_reset;
  73}
  74
  75static const TypeInfo cris_cpu_type_info = {
  76    .name = TYPE_CRIS_CPU,
  77    .parent = TYPE_CPU,
  78    .instance_size = sizeof(CRISCPU),
  79    .instance_init = cris_cpu_initfn,
  80    .abstract = false,
  81    .class_size = sizeof(CRISCPUClass),
  82    .class_init = cris_cpu_class_init,
  83};
  84
  85static void cris_cpu_register_types(void)
  86{
  87    type_register_static(&cris_cpu_type_info);
  88}
  89
  90type_init(cris_cpu_register_types)
  91