Archipelago » qemu

/*

 * QEMU CPU model

 *

 * Copyright (c) 2012 SUSE LINUX Products GmbH

 *

 * 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 "qemu-common.h"

#include "qom/cpu.h"

#include "sysemu/kvm.h"

#include "qemu/notify.h"

#include "qemu/log.h"

#include "sysemu/sysemu.h"

typedef struct CPUExistsArgs {

    int64_t id;

    bool found;

} CPUExistsArgs;

static void cpu_exist_cb(CPUState *cpu, void *data)

{

    CPUClass *klass = CPU_GET_CLASS(cpu);

    CPUExistsArgs *arg = data;

    if (klass->get_arch_id(cpu) == arg->id) {

        arg->found = true;

    }

}

bool cpu_exists(int64_t id)

{

    CPUExistsArgs data = {

        .id = id,

        .found = false,

    };

    qemu_for_each_cpu(cpu_exist_cb, &data);

    return data.found;

}

bool cpu_paging_enabled(const CPUState *cpu)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);

    return cc->get_paging_enabled(cpu);

}

static bool cpu_common_get_paging_enabled(const CPUState *cpu)

{

    return false;

}

void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list,

                            Error **errp)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);

    return cc->get_memory_mapping(cpu, list, errp);

}

static void cpu_common_get_memory_mapping(CPUState *cpu,

                                          MemoryMappingList *list,

                                          Error **errp)

{

    error_setg(errp, "Obtaining memory mappings is unsupported on this CPU.");

}

/* CPU hot-plug notifiers */

static NotifierList cpu_added_notifiers =

    NOTIFIER_LIST_INITIALIZER(cpu_add_notifiers);

void qemu_register_cpu_added_notifier(Notifier *notifier)

{

    notifier_list_add(&cpu_added_notifiers, notifier);

}

void cpu_reset_interrupt(CPUState *cpu, int mask)

{

    cpu->interrupt_request &= ~mask;

}

void cpu_exit(CPUState *cpu)

{

    cpu->exit_request = 1;

    cpu->tcg_exit_req = 1;

}

int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,

                             void *opaque)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);

    return (*cc->write_elf32_qemunote)(f, cpu, opaque);

}

static int cpu_common_write_elf32_qemunote(WriteCoreDumpFunction f,

                                           CPUState *cpu, void *opaque)

{

    return -1;

}

int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,

                         int cpuid, void *opaque)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);

    return (*cc->write_elf32_note)(f, cpu, cpuid, opaque);

}

static int cpu_common_write_elf32_note(WriteCoreDumpFunction f,

                                       CPUState *cpu, int cpuid,

                                       void *opaque)

{

    return -1;

}

int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,

                             void *opaque)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);

    return (*cc->write_elf64_qemunote)(f, cpu, opaque);

}

static int cpu_common_write_elf64_qemunote(WriteCoreDumpFunction f,

                                           CPUState *cpu, void *opaque)

{

    return -1;

}

int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,

                         int cpuid, void *opaque)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);

    return (*cc->write_elf64_note)(f, cpu, cpuid, opaque);

}

static int cpu_common_write_elf64_note(WriteCoreDumpFunction f,

                                       CPUState *cpu, int cpuid,

                                       void *opaque)

{

    return -1;

}

static int cpu_common_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg)

{

    return 0;

}

static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg)

{

    return 0;

}

void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,

                    int flags)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);

    if (cc->dump_state) {

        cc->dump_state(cpu, f, cpu_fprintf, flags);

    }

}

void cpu_dump_statistics(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,

                         int flags)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);

    if (cc->dump_statistics) {

        cc->dump_statistics(cpu, f, cpu_fprintf, flags);

    }

}

void cpu_reset(CPUState *cpu)

{

    CPUClass *klass = CPU_GET_CLASS(cpu);

    if (klass->reset != NULL) {

        (*klass->reset)(cpu);

    }

}

static void cpu_common_reset(CPUState *cpu)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);

    if (qemu_loglevel_mask(CPU_LOG_RESET)) {

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

        log_cpu_state(cpu, cc->reset_dump_flags);

    }

    cpu->exit_request = 0;

    cpu->interrupt_request = 0;

    cpu->current_tb = NULL;

    cpu->halted = 0;

}

ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model)

{

    CPUClass *cc = CPU_CLASS(object_class_by_name(typename));

    return cc->class_by_name(cpu_model);

}

static ObjectClass *cpu_common_class_by_name(const char *cpu_model)

{

    return NULL;

}

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

{

    CPUState *cpu = CPU(dev);

    qemu_init_vcpu(cpu);

    if (dev->hotplugged) {

        cpu_synchronize_post_init(cpu);

        notifier_list_notify(&cpu_added_notifiers, dev);

        cpu_resume(cpu);

    }

}

static void cpu_common_initfn(Object *obj)

{

    CPUState *cpu = CPU(obj);

    CPUClass *cc = CPU_GET_CLASS(obj);

    cpu->gdb_num_regs = cc->gdb_num_core_regs;

}

static int64_t cpu_common_get_arch_id(CPUState *cpu)

{

    return cpu->cpu_index;

}

static void cpu_class_init(ObjectClass *klass, void *data)

{

    DeviceClass *dc = DEVICE_CLASS(klass);

    CPUClass *k = CPU_CLASS(klass);

    k->class_by_name = cpu_common_class_by_name;

    k->reset = cpu_common_reset;

    k->get_arch_id = cpu_common_get_arch_id;

    k->get_paging_enabled = cpu_common_get_paging_enabled;

    k->get_memory_mapping = cpu_common_get_memory_mapping;

    k->write_elf32_qemunote = cpu_common_write_elf32_qemunote;

    k->write_elf32_note = cpu_common_write_elf32_note;

    k->write_elf64_qemunote = cpu_common_write_elf64_qemunote;

    k->write_elf64_note = cpu_common_write_elf64_note;

    k->gdb_read_register = cpu_common_gdb_read_register;

    k->gdb_write_register = cpu_common_gdb_write_register;

    dc->realize = cpu_common_realizefn;

    dc->no_user = 1;

}

static const TypeInfo cpu_type_info = {

    .name = TYPE_CPU,

    .parent = TYPE_DEVICE,

    .instance_size = sizeof(CPUState),

    .instance_init = cpu_common_initfn,

    .abstract = true,

    .class_size = sizeof(CPUClass),

    .class_init = cpu_class_init,

};

static void cpu_register_types(void)

{

    type_register_static(&cpu_type_info);

}

type_init(cpu_register_types)