Archipelago » qemu

/*

 * QEMU Alpha CPU

 *

 * Copyright (c) 2007 Jocelyn Mayer

 * 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 "migration/vmstate.h"

static void alpha_cpu_set_pc(CPUState *cs, vaddr value)

{

    AlphaCPU *cpu = ALPHA_CPU(cs);

    cpu->env.pc = value;

}

static void alpha_cpu_realizefn(DeviceState *dev, Error **errp)

{

    AlphaCPUClass *acc = ALPHA_CPU_GET_CLASS(dev);

    acc->parent_realize(dev, errp);

}

/* Sort alphabetically by type name. */

static gint alpha_cpu_list_compare(gconstpointer a, gconstpointer b)

{

    ObjectClass *class_a = (ObjectClass *)a;

    ObjectClass *class_b = (ObjectClass *)b;

    const char *name_a, *name_b;

    name_a = object_class_get_name(class_a);

    name_b = object_class_get_name(class_b);

    return strcmp(name_a, name_b);

}

static void alpha_cpu_list_entry(gpointer data, gpointer user_data)

{

    ObjectClass *oc = data;

    CPUListState *s = user_data;

    (*s->cpu_fprintf)(s->file, "  %s\n",

                      object_class_get_name(oc));

}

void alpha_cpu_list(FILE *f, fprintf_function cpu_fprintf)

{

    CPUListState s = {

        .file = f,

        .cpu_fprintf = cpu_fprintf,

    };

    GSList *list;

    list = object_class_get_list(TYPE_ALPHA_CPU, false);

    list = g_slist_sort(list, alpha_cpu_list_compare);

    (*cpu_fprintf)(f, "Available CPUs:\n");

    g_slist_foreach(list, alpha_cpu_list_entry, &s);

    g_slist_free(list);

}

/* Models */

#define TYPE(model) model "-" TYPE_ALPHA_CPU

typedef struct AlphaCPUAlias {

    const char *alias;

    const char *typename;

} AlphaCPUAlias;

static const AlphaCPUAlias alpha_cpu_aliases[] = {

    { "21064",   TYPE("ev4") },

    { "21164",   TYPE("ev5") },

    { "21164a",  TYPE("ev56") },

    { "21164pc", TYPE("pca56") },

    { "21264",   TYPE("ev6") },

    { "21264a",  TYPE("ev67") },

};

static ObjectClass *alpha_cpu_class_by_name(const char *cpu_model)

{

    ObjectClass *oc = NULL;

    char *typename;

    int i;

    if (cpu_model == NULL) {

        return NULL;

    }

    oc = object_class_by_name(cpu_model);

    if (oc != NULL && object_class_dynamic_cast(oc, TYPE_ALPHA_CPU) != NULL &&

        !object_class_is_abstract(oc)) {

        return oc;

    }

    for (i = 0; i < ARRAY_SIZE(alpha_cpu_aliases); i++) {

        if (strcmp(cpu_model, alpha_cpu_aliases[i].alias) == 0) {

            oc = object_class_by_name(alpha_cpu_aliases[i].typename);

            assert(oc != NULL && !object_class_is_abstract(oc));

            return oc;

        }

    }

    typename = g_strdup_printf("%s-" TYPE_ALPHA_CPU, cpu_model);

    oc = object_class_by_name(typename);

    g_free(typename);

    if (oc != NULL && object_class_is_abstract(oc)) {

        oc = NULL;

    }

    return oc;

}

AlphaCPU *cpu_alpha_init(const char *cpu_model)

{

    AlphaCPU *cpu;

    CPUAlphaState *env;

    ObjectClass *cpu_class;

    cpu_class = alpha_cpu_class_by_name(cpu_model);

    if (cpu_class == NULL) {

        /* Default to ev67; no reason not to emulate insns by default.  */

        cpu_class = object_class_by_name(TYPE("ev67"));

    }

    cpu = ALPHA_CPU(object_new(object_class_get_name(cpu_class)));

    env = &cpu->env;

    env->cpu_model_str = cpu_model;

    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);

    return cpu;

}

static void ev4_cpu_initfn(Object *obj)

{

    AlphaCPU *cpu = ALPHA_CPU(obj);

    CPUAlphaState *env = &cpu->env;

    env->implver = IMPLVER_2106x;

}

static const TypeInfo ev4_cpu_type_info = {

    .name = TYPE("ev4"),

    .parent = TYPE_ALPHA_CPU,

    .instance_init = ev4_cpu_initfn,

};

static void ev5_cpu_initfn(Object *obj)

{

    AlphaCPU *cpu = ALPHA_CPU(obj);

    CPUAlphaState *env = &cpu->env;

    env->implver = IMPLVER_21164;

}

static const TypeInfo ev5_cpu_type_info = {

    .name = TYPE("ev5"),

    .parent = TYPE_ALPHA_CPU,

    .instance_init = ev5_cpu_initfn,

};

static void ev56_cpu_initfn(Object *obj)

{

    AlphaCPU *cpu = ALPHA_CPU(obj);

    CPUAlphaState *env = &cpu->env;

    env->amask |= AMASK_BWX;

}

static const TypeInfo ev56_cpu_type_info = {

    .name = TYPE("ev56"),

    .parent = TYPE("ev5"),

    .instance_init = ev56_cpu_initfn,

};

static void pca56_cpu_initfn(Object *obj)

{

    AlphaCPU *cpu = ALPHA_CPU(obj);

    CPUAlphaState *env = &cpu->env;

    env->amask |= AMASK_MVI;

}

static const TypeInfo pca56_cpu_type_info = {

    .name = TYPE("pca56"),

    .parent = TYPE("ev56"),

    .instance_init = pca56_cpu_initfn,

};

static void ev6_cpu_initfn(Object *obj)

{

    AlphaCPU *cpu = ALPHA_CPU(obj);

    CPUAlphaState *env = &cpu->env;

    env->implver = IMPLVER_21264;

    env->amask = AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP;

}

static const TypeInfo ev6_cpu_type_info = {

    .name = TYPE("ev6"),

    .parent = TYPE_ALPHA_CPU,

    .instance_init = ev6_cpu_initfn,

};

static void ev67_cpu_initfn(Object *obj)

{

    AlphaCPU *cpu = ALPHA_CPU(obj);

    CPUAlphaState *env = &cpu->env;

    env->amask |= AMASK_CIX | AMASK_PREFETCH;

}

static const TypeInfo ev67_cpu_type_info = {

    .name = TYPE("ev67"),

    .parent = TYPE("ev6"),

    .instance_init = ev67_cpu_initfn,

};

static const TypeInfo ev68_cpu_type_info = {

    .name = TYPE("ev68"),

    .parent = TYPE("ev67"),

};

static void alpha_cpu_initfn(Object *obj)

{

    CPUState *cs = CPU(obj);

    AlphaCPU *cpu = ALPHA_CPU(obj);

    CPUAlphaState *env = &cpu->env;

    cs->env_ptr = env;

    cpu_exec_init(env);

    tlb_flush(env, 1);

    alpha_translate_init();

#if defined(CONFIG_USER_ONLY)

    env->ps = PS_USER_MODE;

    cpu_alpha_store_fpcr(env, (FPCR_INVD | FPCR_DZED | FPCR_OVFD

                               | FPCR_UNFD | FPCR_INED | FPCR_DNOD

                               | FPCR_DYN_NORMAL));

#endif

    env->lock_addr = -1;

    env->fen = 1;

}

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

{

    DeviceClass *dc = DEVICE_CLASS(oc);

    CPUClass *cc = CPU_CLASS(oc);

    AlphaCPUClass *acc = ALPHA_CPU_CLASS(oc);

    acc->parent_realize = dc->realize;

    dc->realize = alpha_cpu_realizefn;

    cc->class_by_name = alpha_cpu_class_by_name;

    cc->do_interrupt = alpha_cpu_do_interrupt;

    cc->dump_state = alpha_cpu_dump_state;

    cc->set_pc = alpha_cpu_set_pc;

    cc->gdb_read_register = alpha_cpu_gdb_read_register;

    cc->gdb_write_register = alpha_cpu_gdb_write_register;

#ifndef CONFIG_USER_ONLY

    cc->do_unassigned_access = alpha_cpu_unassigned_access;

    cc->get_phys_page_debug = alpha_cpu_get_phys_page_debug;

    dc->vmsd = &vmstate_alpha_cpu;

#endif

    cc->gdb_num_core_regs = 67;

}

static const TypeInfo alpha_cpu_type_info = {

    .name = TYPE_ALPHA_CPU,

    .parent = TYPE_CPU,

    .instance_size = sizeof(AlphaCPU),

    .instance_init = alpha_cpu_initfn,

    .abstract = true,

    .class_size = sizeof(AlphaCPUClass),

    .class_init = alpha_cpu_class_init,

};

static void alpha_cpu_register_types(void)

{

    type_register_static(&alpha_cpu_type_info);

    type_register_static(&ev4_cpu_type_info);

    type_register_static(&ev5_cpu_type_info);

    type_register_static(&ev56_cpu_type_info);

    type_register_static(&pca56_cpu_type_info);

    type_register_static(&ev6_cpu_type_info);

    type_register_static(&ev67_cpu_type_info);

    type_register_static(&ev68_cpu_type_info);

}

type_init(alpha_cpu_register_types)