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-rw-r--r--target-tricore/cpu.c192
1 files changed, 192 insertions, 0 deletions
diff --git a/target-tricore/cpu.c b/target-tricore/cpu.c
new file mode 100644
index 0000000000..db9f404b44
--- /dev/null
+++ b/target-tricore/cpu.c
@@ -0,0 +1,192 @@
+/*
+ * TriCore emulation for qemu: main translation routines.
+ *
+ * Copyright (c) 2012-2014 Bastian Koppelmann C-Lab/University Paderborn
+ *
+ * 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 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 Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cpu.h"
+#include "qemu-common.h"
+
+static inline void set_feature(CPUTriCoreState *env, int feature)
+{
+ env->features |= 1ULL << feature;
+}
+
+static void tricore_cpu_set_pc(CPUState *cs, vaddr value)
+{
+ TriCoreCPU *cpu = TRICORE_CPU(cs);
+ CPUTriCoreState *env = &cpu->env;
+
+ env->PC = value & ~(target_ulong)1;
+}
+
+static void tricore_cpu_synchronize_from_tb(CPUState *cs,
+ TranslationBlock *tb)
+{
+ TriCoreCPU *cpu = TRICORE_CPU(cs);
+ CPUTriCoreState *env = &cpu->env;
+
+ env->PC = tb->pc;
+}
+
+static void tricore_cpu_reset(CPUState *s)
+{
+ TriCoreCPU *cpu = TRICORE_CPU(s);
+ TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(cpu);
+ CPUTriCoreState *env = &cpu->env;
+
+ tcc->parent_reset(s);
+
+ tlb_flush(s, 1);
+
+ cpu_state_reset(env);
+}
+
+static bool tricore_cpu_has_work(CPUState *cs)
+{
+ return true;
+}
+
+static void tricore_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+ CPUState *cs = CPU(dev);
+ TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(dev);
+
+ cpu_reset(cs);
+ qemu_init_vcpu(cs);
+
+ tcc->parent_realize(dev, errp);
+}
+
+
+static void tricore_cpu_initfn(Object *obj)
+{
+ CPUState *cs = CPU(obj);
+ TriCoreCPU *cpu = TRICORE_CPU(obj);
+ CPUTriCoreState *env = &cpu->env;
+
+ cs->env_ptr = env;
+ cpu_exec_init(env);
+
+ if (tcg_enabled()) {
+ tricore_tcg_init();
+ }
+}
+
+static ObjectClass *tricore_cpu_class_by_name(const char *cpu_model)
+{
+ ObjectClass *oc;
+ char *typename;
+
+ if (!cpu_model) {
+ return NULL;
+ }
+
+ typename = g_strdup_printf("%s-" TYPE_TRICORE_CPU, cpu_model);
+ oc = object_class_by_name(typename);
+ g_free(typename);
+ if (!oc || !object_class_dynamic_cast(oc, TYPE_TRICORE_CPU) ||
+ object_class_is_abstract(oc)) {
+ return NULL;
+ }
+ return oc;
+}
+
+static void tc1796_initfn(Object *obj)
+{
+ TriCoreCPU *cpu = TRICORE_CPU(obj);
+
+ set_feature(&cpu->env, TRICORE_FEATURE_13);
+}
+
+static void aurix_initfn(Object *obj)
+{
+ TriCoreCPU *cpu = TRICORE_CPU(obj);
+
+ set_feature(&cpu->env, TRICORE_FEATURE_16);
+}
+
+typedef struct TriCoreCPUInfo {
+ const char *name;
+ void (*initfn)(Object *obj);
+ void (*class_init)(ObjectClass *oc, void *data);
+} TriCoreCPUInfo;
+
+static const TriCoreCPUInfo tricore_cpus[] = {
+ { .name = "tc1796", .initfn = tc1796_initfn },
+ { .name = "aurix", .initfn = aurix_initfn },
+ { .name = NULL }
+};
+
+static void tricore_cpu_class_init(ObjectClass *c, void *data)
+{
+ TriCoreCPUClass *mcc = TRICORE_CPU_CLASS(c);
+ CPUClass *cc = CPU_CLASS(c);
+ DeviceClass *dc = DEVICE_CLASS(c);
+
+ mcc->parent_realize = dc->realize;
+ dc->realize = tricore_cpu_realizefn;
+
+ mcc->parent_reset = cc->reset;
+ cc->reset = tricore_cpu_reset;
+ cc->class_by_name = tricore_cpu_class_by_name;
+ cc->has_work = tricore_cpu_has_work;
+
+ cc->do_interrupt = tricore_cpu_do_interrupt;
+ cc->dump_state = tricore_cpu_dump_state;
+ cc->set_pc = tricore_cpu_set_pc;
+ cc->synchronize_from_tb = tricore_cpu_synchronize_from_tb;
+
+}
+
+static void cpu_register(const TriCoreCPUInfo *info)
+{
+ TypeInfo type_info = {
+ .parent = TYPE_TRICORE_CPU,
+ .instance_size = sizeof(TriCoreCPU),
+ .instance_init = info->initfn,
+ .class_size = sizeof(TriCoreCPUClass),
+ .class_init = info->class_init,
+ };
+
+ type_info.name = g_strdup_printf("%s-" TYPE_TRICORE_CPU, info->name);
+ type_register(&type_info);
+ g_free((void *)type_info.name);
+}
+
+static const TypeInfo tricore_cpu_type_info = {
+ .name = TYPE_TRICORE_CPU,
+ .parent = TYPE_CPU,
+ .instance_size = sizeof(TriCoreCPU),
+ .instance_init = tricore_cpu_initfn,
+ .abstract = true,
+ .class_size = sizeof(TriCoreCPUClass),
+ .class_init = tricore_cpu_class_init,
+};
+
+static void tricore_cpu_register_types(void)
+{
+ const TriCoreCPUInfo *info = tricore_cpus;
+
+ type_register_static(&tricore_cpu_type_info);
+
+ while (info->name) {
+ cpu_register(info);
+ info++;
+ }
+}
+
+type_init(tricore_cpu_register_types)