target-xtensa: QOM'ify CPU

Embed CPUXtensaState as first member of XtensaCPU.
Let CPUClass::reset() call cpu_state_reset() for now.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

Makefile.target

@@ -102,6 +102,7 @@ endif
 libobj-$(TARGET_SPARC) += int32_helper.o
 libobj-$(TARGET_SPARC64) += int64_helper.o
 libobj-$(TARGET_UNICORE32) += cpu.o
+libobj-$(TARGET_XTENSA) += cpu.o
 libobj-$(TARGET_ALPHA) += int_helper.o fpu_helper.o sys_helper.o mem_helper.o
 
 libobj-y += disas.o

target-xtensa/cpu-qom.h

@@ -0,0 +1,80 @@
+/*
+ * QEMU Xtensa CPU
+ *
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the Open Source and Linux Lab nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef QEMU_XTENSA_CPU_QOM_H
+#define QEMU_XTENSA_CPU_QOM_H
+
+#include "qemu/cpu.h"
+#include "cpu.h"
+
+#define TYPE_XTENSA_CPU "xtensa-cpu"
+
+#define XTENSA_CPU_CLASS(class) \
+    OBJECT_CLASS_CHECK(XtensaCPUClass, (class), TYPE_XTENSA_CPU)
+#define XTENSA_CPU(obj) \
+    OBJECT_CHECK(XtensaCPU, (obj), TYPE_XTENSA_CPU)
+#define XTENSA_CPU_GET_CLASS(obj) \
+    OBJECT_GET_CLASS(XtensaCPUClass, (obj), TYPE_XTENSA_CPU)
+
+/**
+ * XtensaCPUClass:
+ * @parent_reset: The parent class' reset handler.
+ *
+ * An Xtensa CPU model.
+ */
+typedef struct XtensaCPUClass {
+    /*< private >*/
+    CPUClass parent_class;
+    /*< public >*/
+
+    void (*parent_reset)(CPUState *cpu);
+} XtensaCPUClass;
+
+/**
+ * XtensaCPU:
+ * @env: #CPUXtensaState
+ *
+ * An Xtensa CPU.
+ */
+typedef struct XtensaCPU {
+    /*< private >*/
+    CPUState parent_obj;
+    /*< public >*/
+
+    CPUXtensaState env;
+} XtensaCPU;
+
+static inline XtensaCPU *xtensa_env_get_cpu(const CPUXtensaState *env)
+{
+    return XTENSA_CPU(container_of(env, XtensaCPU, env));
+}
+
+#define ENV_GET_CPU(e) CPU(xtensa_env_get_cpu(e))
+
+
+#endif

target-xtensa/cpu.c

@@ -0,0 +1,69 @@
+/*
+ * QEMU Xtensa CPU
+ *
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the Open Source and Linux Lab nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "cpu-qom.h"
+#include "qemu-common.h"
+
+
+/* CPUClass::reset() */
+static void xtensa_cpu_reset(CPUState *s)
+{
+    XtensaCPU *cpu = XTENSA_CPU(s);
+    XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(cpu);
+    CPUXtensaState *env = &cpu->env;
+
+    xcc->parent_reset(s);
+
+    cpu_state_reset(env);
+}
+
+static void xtensa_cpu_class_init(ObjectClass *oc, void *data)
+{
+    CPUClass *cc = CPU_CLASS(oc);
+    XtensaCPUClass *xcc = XTENSA_CPU_CLASS(cc);
+
+    xcc->parent_reset = cc->reset;
+    cc->reset = xtensa_cpu_reset;
+}
+
+static const TypeInfo xtensa_cpu_type_info = {
+    .name = TYPE_XTENSA_CPU,
+    .parent = TYPE_CPU,
+    .instance_size = sizeof(XtensaCPU),
+    .abstract = false,
+    .class_size = sizeof(XtensaCPUClass),
+    .class_init = xtensa_cpu_class_init,
+};
+
+static void xtensa_cpu_register_types(void)
+{
+    type_register_static(&xtensa_cpu_type_info);
+}
+
+type_init(xtensa_cpu_register_types)

target-xtensa/cpu.h

@@ -470,6 +470,7 @@ static inline void cpu_get_tb_cpu_state(CPUXtensaState *env, target_ulong *pc,
 }
 
 #include "cpu-all.h"
+#include "cpu-qom.h"
 #include "exec-all.h"
 
 static inline int cpu_has_work(CPUXtensaState *env)

target-xtensa/helper.c

@@ -95,6 +95,7 @@ CPUXtensaState *cpu_xtensa_init(const char *cpu_model)
 {
     static int tcg_inited;
     static int debug_handler_inited;
+    XtensaCPU *cpu;
     CPUXtensaState *env;
     const XtensaConfig *config = NULL;
     XtensaConfigList *core = xtensa_cores;
@@ -109,7 +110,8 @@ CPUXtensaState *cpu_xtensa_init(const char *cpu_model)
         return NULL;
     }
 
-    env = g_malloc0(sizeof(*env));
+    cpu = XTENSA_CPU(object_new(TYPE_XTENSA_CPU));
+    env = &cpu->env;
     env->config = config;
     cpu_exec_init(env);