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/*

 * QEMU AArch64 CPU

 *

 * Copyright (c) 2013 Linaro Ltd

 *

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

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

 * as published by the Free Software Foundation; either version 2

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

 *

 * This program 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 General Public License for more details.

 *

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

 * along with this program; if not, see

 * <http://www.gnu.org/licenses/gpl-2.0.html>

 */

#include "cpu.h"

#include "qemu-common.h"

#if !defined(CONFIG_USER_ONLY)

#include "hw/loader.h"

#endif

#include "hw/arm/arm.h"

#include "sysemu/sysemu.h"

#include "sysemu/kvm.h"

static inline void set_feature(CPUARMState *env, int feature)

{

    env->features |= 1ULL << feature;

}

#ifdef CONFIG_USER_ONLY

static void aarch64_any_initfn(Object *obj)

{

    ARMCPU *cpu = ARM_CPU(obj);

    set_feature(&cpu->env, ARM_FEATURE_V8);

    set_feature(&cpu->env, ARM_FEATURE_VFP4);

    set_feature(&cpu->env, ARM_FEATURE_VFP_FP16);

    set_feature(&cpu->env, ARM_FEATURE_NEON);

    set_feature(&cpu->env, ARM_FEATURE_THUMB2EE);

    set_feature(&cpu->env, ARM_FEATURE_ARM_DIV);

    set_feature(&cpu->env, ARM_FEATURE_V7MP);

    set_feature(&cpu->env, ARM_FEATURE_AARCH64);

}

#endif

typedef struct ARMCPUInfo {

    const char *name;

    void (*initfn)(Object *obj);

    void (*class_init)(ObjectClass *oc, void *data);

} ARMCPUInfo;

static const ARMCPUInfo aarch64_cpus[] = {

#ifdef CONFIG_USER_ONLY

    { .name = "any",         .initfn = aarch64_any_initfn },

#endif

    { .name = NULL } /* TODO: drop when we support more CPUs */

};

static void aarch64_cpu_initfn(Object *obj)

{

}

static void aarch64_cpu_finalizefn(Object *obj)

{

}

static void aarch64_cpu_set_pc(CPUState *cs, vaddr value)

{

    ARMCPU *cpu = ARM_CPU(cs);

    /*

     * TODO: this will need updating for system emulation,

     * when the core may be in AArch32 mode.

     */

    cpu->env.pc = value;

}

static void aarch64_cpu_class_init(ObjectClass *oc, void *data)

{

    CPUClass *cc = CPU_CLASS(oc);

    cc->dump_state = aarch64_cpu_dump_state;

    cc->set_pc = aarch64_cpu_set_pc;

    cc->gdb_read_register = aarch64_cpu_gdb_read_register;

    cc->gdb_write_register = aarch64_cpu_gdb_write_register;

    cc->gdb_num_core_regs = 34;

    cc->gdb_core_xml_file = "aarch64-core.xml";

}

static void aarch64_cpu_register(const ARMCPUInfo *info)

{

    TypeInfo type_info = {

        .parent = TYPE_AARCH64_CPU,

        .instance_size = sizeof(ARMCPU),

        .instance_init = info->initfn,

        .class_size = sizeof(ARMCPUClass),

        .class_init = info->class_init,

    };

    /* TODO: drop when we support more CPUs - all entries will have name set */

    if (!info->name) {

        return;

    }

    type_info.name = g_strdup_printf("%s-" TYPE_ARM_CPU, info->name);

    type_register(&type_info);

    g_free((void *)type_info.name);

}

static const TypeInfo aarch64_cpu_type_info = {

    .name = TYPE_AARCH64_CPU,

    .parent = TYPE_ARM_CPU,

    .instance_size = sizeof(ARMCPU),

    .instance_init = aarch64_cpu_initfn,

    .instance_finalize = aarch64_cpu_finalizefn,

    .abstract = true,

    .class_size = sizeof(AArch64CPUClass),

    .class_init = aarch64_cpu_class_init,

};

static void aarch64_cpu_register_types(void)

{

    int i;

    type_register_static(&aarch64_cpu_type_info);

    for (i = 0; i < ARRAY_SIZE(aarch64_cpus); i++) {

        aarch64_cpu_register(&aarch64_cpus[i]);

    }

}

type_init(aarch64_cpu_register_types)