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/*
* 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 "qom/cpu.h"
#include "qemu-common.h"
#include "sysemu/kvm.h"
#include "qemu/notify.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;
}
/* 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_reset(CPUState *cpu)
{
CPUClass *klass = CPU_GET_CLASS(cpu);
if (klass->reset != NULL) {
(*klass->reset)(cpu);
}
}
static void cpu_common_reset(CPUState *cpu)
{
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);
if (dev->hotplugged) {
cpu_synchronize_post_init(cpu);
notifier_list_notify(&cpu_added_notifiers, dev);
cpu_resume(cpu);
}
}
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;
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),
.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)
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