Archipelago » qemu

/*

 * QEMU CRIS CPU

 *

 * Copyright (c) 2008 AXIS Communications AB

 * Written by Edgar E. Iglesias.

 *

 * Copyright (c) 2012 SUSE LINUX Products GmbH

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, see

 * <http://www.gnu.org/licenses/lgpl-2.1.html>

 */

#include "cpu.h"

#include "qemu-common.h"

#include "mmu.h"

/* CPUClass::reset() */

static void cris_cpu_reset(CPUState *s)

{

    CRISCPU *cpu = CRIS_CPU(s);

    CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(cpu);

    CPUCRISState *env = &cpu->env;

    uint32_t vr;

    if (qemu_loglevel_mask(CPU_LOG_RESET)) {

        qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);

        log_cpu_state(env, 0);

    }

    ccc->parent_reset(s);

    vr = env->pregs[PR_VR];

    memset(env, 0, offsetof(CPUCRISState, breakpoints));

    env->pregs[PR_VR] = vr;

    tlb_flush(env, 1);

#if defined(CONFIG_USER_ONLY)

    /* start in user mode with interrupts enabled.  */

    env->pregs[PR_CCS] |= U_FLAG | I_FLAG | P_FLAG;

#else

    cris_mmu_init(env);

    env->pregs[PR_CCS] = 0;

#endif

}

static void cris_cpu_initfn(Object *obj)

{

    CRISCPU *cpu = CRIS_CPU(obj);

    CPUCRISState *env = &cpu->env;

    cpu_exec_init(env);

}

static void cris_cpu_class_init(ObjectClass *oc, void *data)

{

    CPUClass *cc = CPU_CLASS(oc);

    CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);

    ccc->parent_reset = cc->reset;

    cc->reset = cris_cpu_reset;

}

static const TypeInfo cris_cpu_type_info = {

    .name = TYPE_CRIS_CPU,

    .parent = TYPE_CPU,

    .instance_size = sizeof(CRISCPU),

    .instance_init = cris_cpu_initfn,

    .abstract = false,

    .class_size = sizeof(CRISCPUClass),

    .class_init = cris_cpu_class_init,

};

static void cris_cpu_register_types(void)

{

    type_register_static(&cris_cpu_type_info);

}

type_init(cris_cpu_register_types)