Initial import of qemu-2.4.1HEADmaster

1 files changed, 183 insertions, 0 deletions

diff --git a/target-moxie/cpu.c b/target-moxie/cpu.c
new file mode 100644
index 00000000..3af37799
--- /dev/null
+++ b/target-moxie/cpu.c
@@ -0,0 +1,183 @@
+/*
+ * 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 "cpu.h"
+#include "qemu-common.h"
+#include "migration/vmstate.h"
+#include "machine.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, sizeof(CPUMoxieState));
+    env->pc = 0x1000;
+
+    tlb_flush(s, 1);
+}
+
+static void moxie_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+    CPUState *cs = CPU(dev);
+    MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(dev);
+
+    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);
+    static int inited;
+
+    cs->env_ptr = &cpu->env;
+    cpu_exec_init(cs, &error_abort);
+
+    if (tcg_enabled() && !inited) {
+        inited = 1;
+        moxie_translate_init();
+    }
+}
+
+static ObjectClass *moxie_cpu_class_by_name(const char *cpu_model)
+{
+    ObjectClass *oc;
+
+    if (cpu_model == NULL) {
+        return NULL;
+    }
+
+    oc = object_class_by_name(cpu_model);
+    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
+
+    /*
+     * Reason: moxie_cpu_initfn() calls cpu_exec_init(), which saves
+     * the object in cpus -> dangling pointer after final
+     * object_unref().
+     */
+    dc->cannot_destroy_with_object_finalize_yet = true;
+}
+
+static void moxielite_initfn(Object *obj)
+{
+    /* Set cpu feature flags */
+}
+
+static void moxie_any_initfn(Object *obj)
+{
+    /* Set cpu feature flags */
+}
+
+typedef struct MoxieCPUInfo {
+    const char *name;
+    void (*initfn)(Object *obj);
+} MoxieCPUInfo;
+
+static const MoxieCPUInfo moxie_cpus[] = {
+    { .name = "MoxieLite",      .initfn = moxielite_initfn },
+    { .name = "any",            .initfn = moxie_any_initfn },
+};
+
+MoxieCPU *cpu_moxie_init(const char *cpu_model)
+{
+    return MOXIE_CPU(cpu_generic_init(TYPE_MOXIE_CPU, cpu_model));
+}
+
+static void cpu_register(const MoxieCPUInfo *info)
+{
+    TypeInfo type_info = {
+        .parent = TYPE_MOXIE_CPU,
+        .instance_size = sizeof(MoxieCPU),
+        .instance_init = info->initfn,
+        .class_size = sizeof(MoxieCPUClass),
+    };
+
+    type_info.name = g_strdup_printf("%s-" TYPE_MOXIE_CPU, info->name);
+    type_register(&type_info);
+    g_free((void *)type_info.name);
+}
+
+static const TypeInfo moxie_cpu_type_info = {
+    .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,
+};
+
+static void moxie_cpu_register_types(void)
+{
+    int i;
+    type_register_static(&moxie_cpu_type_info);
+    for (i = 0; i < ARRAY_SIZE(moxie_cpus); i++) {
+        cpu_register(&moxie_cpus[i]);
+    }
+}
+
+type_init(moxie_cpu_register_types)