2014-09-01 13:59:46 +02:00
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/*
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* TriCore emulation for qemu: main translation routines.
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*
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* Copyright (c) 2012-2014 Bastian Koppelmann C-Lab/University Paderborn
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "cpu.h"
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#include "qemu-common.h"
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static inline void set_feature(CPUTriCoreState *env, int feature)
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{
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env->features |= 1ULL << feature;
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}
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static void tricore_cpu_set_pc(CPUState *cs, vaddr value)
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{
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TriCoreCPU *cpu = TRICORE_CPU(cs);
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CPUTriCoreState *env = &cpu->env;
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env->PC = value & ~(target_ulong)1;
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}
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static void tricore_cpu_synchronize_from_tb(CPUState *cs,
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TranslationBlock *tb)
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{
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TriCoreCPU *cpu = TRICORE_CPU(cs);
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CPUTriCoreState *env = &cpu->env;
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env->PC = tb->pc;
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}
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static void tricore_cpu_reset(CPUState *s)
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{
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TriCoreCPU *cpu = TRICORE_CPU(s);
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TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(cpu);
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CPUTriCoreState *env = &cpu->env;
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tcc->parent_reset(s);
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tlb_flush(s, 1);
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cpu_state_reset(env);
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}
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static bool tricore_cpu_has_work(CPUState *cs)
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{
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return true;
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}
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static void tricore_cpu_realizefn(DeviceState *dev, Error **errp)
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{
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CPUState *cs = CPU(dev);
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2014-11-13 15:17:08 +01:00
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TriCoreCPU *cpu = TRICORE_CPU(dev);
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2014-09-01 13:59:46 +02:00
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TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(dev);
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2014-11-13 15:17:08 +01:00
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CPUTriCoreState *env = &cpu->env;
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2014-09-01 13:59:46 +02:00
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2014-11-13 15:17:08 +01:00
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/* Some features automatically imply others */
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if (tricore_feature(env, TRICORE_FEATURE_16)) {
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set_feature(env, TRICORE_FEATURE_131);
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}
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if (tricore_feature(env, TRICORE_FEATURE_131)) {
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set_feature(env, TRICORE_FEATURE_13);
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}
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2014-09-01 13:59:46 +02:00
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cpu_reset(cs);
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qemu_init_vcpu(cs);
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tcc->parent_realize(dev, errp);
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}
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static void tricore_cpu_initfn(Object *obj)
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{
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CPUState *cs = CPU(obj);
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TriCoreCPU *cpu = TRICORE_CPU(obj);
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CPUTriCoreState *env = &cpu->env;
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cs->env_ptr = env;
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cpu_exec_init(env);
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if (tcg_enabled()) {
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tricore_tcg_init();
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}
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}
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static ObjectClass *tricore_cpu_class_by_name(const char *cpu_model)
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{
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ObjectClass *oc;
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char *typename;
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if (!cpu_model) {
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return NULL;
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}
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typename = g_strdup_printf("%s-" TYPE_TRICORE_CPU, cpu_model);
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oc = object_class_by_name(typename);
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g_free(typename);
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if (!oc || !object_class_dynamic_cast(oc, TYPE_TRICORE_CPU) ||
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object_class_is_abstract(oc)) {
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return NULL;
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}
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return oc;
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}
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static void tc1796_initfn(Object *obj)
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{
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TriCoreCPU *cpu = TRICORE_CPU(obj);
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2015-03-22 13:49:12 +01:00
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set_feature(&cpu->env, TRICORE_FEATURE_13);
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}
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static void tc1797_initfn(Object *obj)
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{
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TriCoreCPU *cpu = TRICORE_CPU(obj);
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2015-01-17 23:34:27 +01:00
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set_feature(&cpu->env, TRICORE_FEATURE_131);
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2014-09-01 13:59:46 +02:00
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}
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static void aurix_initfn(Object *obj)
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{
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TriCoreCPU *cpu = TRICORE_CPU(obj);
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set_feature(&cpu->env, TRICORE_FEATURE_16);
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}
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typedef struct TriCoreCPUInfo {
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const char *name;
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void (*initfn)(Object *obj);
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void (*class_init)(ObjectClass *oc, void *data);
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} TriCoreCPUInfo;
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static const TriCoreCPUInfo tricore_cpus[] = {
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{ .name = "tc1796", .initfn = tc1796_initfn },
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2015-03-22 13:49:12 +01:00
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{ .name = "tc1797", .initfn = tc1797_initfn },
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2014-09-01 13:59:46 +02:00
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{ .name = "aurix", .initfn = aurix_initfn },
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{ .name = NULL }
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};
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static void tricore_cpu_class_init(ObjectClass *c, void *data)
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{
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TriCoreCPUClass *mcc = TRICORE_CPU_CLASS(c);
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CPUClass *cc = CPU_CLASS(c);
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DeviceClass *dc = DEVICE_CLASS(c);
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mcc->parent_realize = dc->realize;
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dc->realize = tricore_cpu_realizefn;
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mcc->parent_reset = cc->reset;
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cc->reset = tricore_cpu_reset;
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cc->class_by_name = tricore_cpu_class_by_name;
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cc->has_work = tricore_cpu_has_work;
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cc->dump_state = tricore_cpu_dump_state;
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cc->set_pc = tricore_cpu_set_pc;
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cc->synchronize_from_tb = tricore_cpu_synchronize_from_tb;
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}
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static void cpu_register(const TriCoreCPUInfo *info)
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{
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TypeInfo type_info = {
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.parent = TYPE_TRICORE_CPU,
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.instance_size = sizeof(TriCoreCPU),
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.instance_init = info->initfn,
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.class_size = sizeof(TriCoreCPUClass),
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.class_init = info->class_init,
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};
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type_info.name = g_strdup_printf("%s-" TYPE_TRICORE_CPU, info->name);
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type_register(&type_info);
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g_free((void *)type_info.name);
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}
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static const TypeInfo tricore_cpu_type_info = {
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.name = TYPE_TRICORE_CPU,
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.parent = TYPE_CPU,
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.instance_size = sizeof(TriCoreCPU),
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.instance_init = tricore_cpu_initfn,
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.abstract = true,
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.class_size = sizeof(TriCoreCPUClass),
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.class_init = tricore_cpu_class_init,
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};
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static void tricore_cpu_register_types(void)
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{
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const TriCoreCPUInfo *info = tricore_cpus;
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type_register_static(&tricore_cpu_type_info);
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while (info->name) {
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cpu_register(info);
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info++;
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}
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}
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type_init(tricore_cpu_register_types)
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