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/*
* QEMU Moxie CPU
*
* Copyright (c) 2013 Anthony Green
*
* 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 General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "cpu.h"
#include "qemu-common.h"
#include "migration/vmstate.h"
#include "machine.h"
#include "exec/exec-all.h"
static void moxie_cpu_set_pc(CPUState *cs, vaddr value)
{
MoxieCPU *cpu = MOXIE_CPU(cs);
cpu->env.pc = value;
}
static bool moxie_cpu_has_work(CPUState *cs)
{
return cs->interrupt_request & CPU_INTERRUPT_HARD;
}
static void moxie_cpu_reset(CPUState *s)
{
MoxieCPU *cpu = MOXIE_CPU(s);
MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(cpu);
CPUMoxieState *env = &cpu->env;
mcc->parent_reset(s);
memset(env, 0, offsetof(CPUMoxieState, end_reset_fields));
env->pc = 0x1000;
}
static void moxie_cpu_disas_set_info(CPUState *cpu, disassemble_info *info)
{
info->mach = bfd_arch_moxie;
info->print_insn = print_insn_moxie;
}
static void moxie_cpu_realizefn(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(dev);
Error *local_err = NULL;
cpu_exec_realizefn(cs, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
qemu_init_vcpu(cs);
cpu_reset(cs);
mcc->parent_realize(dev, errp);
}
static void moxie_cpu_initfn(Object *obj)
{
CPUState *cs = CPU(obj);
MoxieCPU *cpu = MOXIE_CPU(obj);
cs->env_ptr = &cpu->env;
}
static ObjectClass *moxie_cpu_class_by_name(const char *cpu_model)
{
ObjectClass *oc;
char *typename;
typename = g_strdup_printf(MOXIE_CPU_TYPE_NAME("%s"), cpu_model);
oc = object_class_by_name(typename);
g_free(typename);
if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_MOXIE_CPU) ||
object_class_is_abstract(oc))) {
return NULL;
}
return oc;
}
static void moxie_cpu_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
CPUClass *cc = CPU_CLASS(oc);
MoxieCPUClass *mcc = MOXIE_CPU_CLASS(oc);
mcc->parent_realize = dc->realize;
dc->realize = moxie_cpu_realizefn;
mcc->parent_reset = cc->reset;
cc->reset = moxie_cpu_reset;
cc->class_by_name = moxie_cpu_class_by_name;
cc->has_work = moxie_cpu_has_work;
cc->do_interrupt = moxie_cpu_do_interrupt;
cc->dump_state = moxie_cpu_dump_state;
cc->set_pc = moxie_cpu_set_pc;
#ifdef CONFIG_USER_ONLY
cc->handle_mmu_fault = moxie_cpu_handle_mmu_fault;
#else
cc->get_phys_page_debug = moxie_cpu_get_phys_page_debug;
cc->vmsd = &vmstate_moxie_cpu;
#endif
cc->disas_set_info = moxie_cpu_disas_set_info;
cc->tcg_initialize = moxie_translate_init;
}
static void moxielite_initfn(Object *obj)
{
/* Set cpu feature flags */
}
static void moxie_any_initfn(Object *obj)
{
/* Set cpu feature flags */
}
#define DEFINE_MOXIE_CPU_TYPE(cpu_model, initfn) \
{ \
.parent = TYPE_MOXIE_CPU, \
.instance_init = initfn, \
.name = MOXIE_CPU_TYPE_NAME(cpu_model), \
}
static const TypeInfo moxie_cpus_type_infos[] = {
{ /* base class should be registered first */
.name = TYPE_MOXIE_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(MoxieCPU),
.instance_init = moxie_cpu_initfn,
.class_size = sizeof(MoxieCPUClass),
.class_init = moxie_cpu_class_init,
},
DEFINE_MOXIE_CPU_TYPE("MoxieLite", moxielite_initfn),
DEFINE_MOXIE_CPU_TYPE("any", moxie_any_initfn),
};
DEFINE_TYPES(moxie_cpus_type_infos)
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