import
This commit is contained in:
Nguyen Anh Quynh
274
qemu/qom/cpu.c
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274
qemu/qom/cpu.c
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/*
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* QEMU CPU model
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*
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* Copyright (c) 2012-2014 SUSE LINUX Products GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see
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* <http://www.gnu.org/licenses/gpl-2.0.html>
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*/
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#include "qemu-common.h"
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#include "qemu/log.h"
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#include "uc_priv.h"
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bool cpu_exists(struct uc_struct* uc, int64_t id)
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{
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CPUState *cpu;
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CPU_FOREACH(cpu) {
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CPUClass *cc = CPU_GET_CLASS(uc, cpu);
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if (cc->get_arch_id(cpu) == id) {
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return true;
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}
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}
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return false;
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}
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CPUState *cpu_generic_init(struct uc_struct *uc, const char *typename, const char *cpu_model)
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{
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char *str, *name, *featurestr;
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CPUState *cpu;
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ObjectClass *oc;
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CPUClass *cc;
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Error *err = NULL;
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str = g_strdup(cpu_model);
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name = strtok(str, ",");
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oc = cpu_class_by_name(uc, typename, name);
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if (oc == NULL) {
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g_free(str);
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return NULL;
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}
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cpu = CPU(object_new(uc, object_class_get_name(oc)));
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cc = CPU_GET_CLASS(uc, cpu);
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featurestr = strtok(NULL, ",");
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cc->parse_features(cpu, featurestr, &err);
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g_free(str);
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if (err != NULL) {
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goto out;
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}
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object_property_set_bool(uc, OBJECT(cpu), true, "realized", &err);
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out:
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if (err != NULL) {
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error_free(err);
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object_unref(uc, OBJECT(cpu));
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return NULL;
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}
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return cpu;
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}
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bool cpu_paging_enabled(const CPUState *cpu)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu->uc, cpu);
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return cc->get_paging_enabled(cpu);
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}
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static bool cpu_common_get_paging_enabled(const CPUState *cpu)
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{
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return false;
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}
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void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list,
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Error **errp)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu->uc, cpu);
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return cc->get_memory_mapping(cpu, list, errp);
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}
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static void cpu_common_get_memory_mapping(CPUState *cpu,
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MemoryMappingList *list,
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Error **errp)
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{
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error_setg(errp, "Obtaining memory mappings is unsupported on this CPU.");
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}
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void cpu_reset_interrupt(CPUState *cpu, int mask)
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{
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cpu->interrupt_request &= ~mask;
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}
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void cpu_exit(CPUState *cpu)
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{
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cpu->exit_request = 1;
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cpu->tcg_exit_req = 1;
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}
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static void cpu_common_noop(CPUState *cpu)
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{
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}
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static bool cpu_common_exec_interrupt(CPUState *cpu, int int_req)
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{
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return false;
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}
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void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
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int flags)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu->uc, cpu);
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if (cc->dump_state) {
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cc->dump_state(cpu, f, cpu_fprintf, flags);
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}
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}
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void cpu_dump_statistics(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
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int flags)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu->uc, cpu);
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if (cc->dump_statistics) {
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cc->dump_statistics(cpu, f, cpu_fprintf, flags);
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}
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}
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void cpu_reset(CPUState *cpu)
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{
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CPUClass *klass = CPU_GET_CLASS(cpu->uc, cpu);
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if (klass->reset != NULL) {
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(*klass->reset)(cpu);
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}
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}
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static void cpu_common_reset(CPUState *cpu)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu->uc, cpu);
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if (qemu_loglevel_mask(CPU_LOG_RESET)) {
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qemu_log("CPU Reset (CPU %d)\n", cpu->cpu_index);
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log_cpu_state(cpu, cc->reset_dump_flags);
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}
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cpu->interrupt_request = 0;
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cpu->current_tb = NULL;
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cpu->halted = 0;
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cpu->mem_io_pc = 0;
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cpu->mem_io_vaddr = 0;
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cpu->icount_extra = 0;
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cpu->icount_decr.u32 = 0;
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cpu->can_do_io = 0;
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memset(cpu->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof(void *));
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}
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static bool cpu_common_has_work(CPUState *cs)
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{
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return false;
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}
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ObjectClass *cpu_class_by_name(struct uc_struct *uc, const char *typename, const char *cpu_model)
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{
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CPUClass *cc = CPU_CLASS(uc, object_class_by_name(uc, typename));
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return cc->class_by_name(uc, cpu_model);
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}
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static ObjectClass *cpu_common_class_by_name(struct uc_struct *uc, const char *cpu_model)
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{
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return NULL;
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}
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static void cpu_common_parse_features(CPUState *cpu, char *features,
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Error **errp)
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{
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char *featurestr; /* Single "key=value" string being parsed */
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char *val;
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Error *err = NULL;
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featurestr = features ? strtok(features, ",") : NULL;
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while (featurestr) {
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val = strchr(featurestr, '=');
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if (val) {
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*val = 0;
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val++;
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object_property_parse(cpu->uc, OBJECT(cpu), val, featurestr, &err);
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if (err) {
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error_propagate(errp, err);
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return;
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}
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} else {
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error_setg(errp, "Expected key=value format, found %s.",
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featurestr);
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return;
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}
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featurestr = strtok(NULL, ",");
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}
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}
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static void cpu_common_realizefn(struct uc_struct *uc, DeviceState *dev, Error **errp)
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{
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CPUState *cpu = CPU(dev);
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if (dev->hotplugged) {
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cpu_resume(cpu);
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}
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}
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static void cpu_common_initfn(struct uc_struct *uc, Object *obj, void *opaque)
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{
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}
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static int64_t cpu_common_get_arch_id(CPUState *cpu)
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{
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return cpu->cpu_index;
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}
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static void cpu_class_init(struct uc_struct *uc, ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(uc, klass);
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CPUClass *k = CPU_CLASS(uc, klass);
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k->class_by_name = cpu_common_class_by_name;
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k->parse_features = cpu_common_parse_features;
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k->reset = cpu_common_reset;
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k->get_arch_id = cpu_common_get_arch_id;
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k->has_work = cpu_common_has_work;
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k->get_paging_enabled = cpu_common_get_paging_enabled;
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k->get_memory_mapping = cpu_common_get_memory_mapping;
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k->debug_excp_handler = cpu_common_noop;
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k->cpu_exec_enter = cpu_common_noop;
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k->cpu_exec_exit = cpu_common_noop;
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k->cpu_exec_interrupt = cpu_common_exec_interrupt;
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dc->realize = cpu_common_realizefn;
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/*
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* Reason: CPUs still need special care by board code: wiring up
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* IRQs, adding reset handlers, halting non-first CPUs, ...
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*/
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dc->cannot_instantiate_with_device_add_yet = true;
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}
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static const TypeInfo cpu_type_info = {
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.name = TYPE_CPU,
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.parent = TYPE_DEVICE,
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.instance_size = sizeof(CPUState),
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.instance_init = cpu_common_initfn,
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.abstract = true,
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.class_size = sizeof(CPUClass),
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.class_init = cpu_class_init,
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};
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void cpu_register_types(struct uc_struct *uc)
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{
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type_register_static(uc, &cpu_type_info);
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}
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