target-tricore: Add target stubs and qom-cpu

Add TriCore target stubs, and QOM cpu, and Maintainer

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-id: 1409572800-4116-2-git-send-email-kbastian@mail.uni-paderborn.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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)