target-arm: Update ARMCPU to QOM realizefn

Turn arm_cpu_realize() into a QOM realize function, no longer called
via cpu.h prototype. To maintain the semantics of cpu_init(), set
realized = true explicitly in cpu_arm_init().

Move GDB coprocessor registration, CPU reset and vCPU initialization
into the realizefn.
Signed-off-by: NAndreas Färber <afaerber@suse.de>

target-arm/cpu-qom.h

@@ -33,6 +33,7 @@
 
 /**
  * ARMCPUClass:
+ * @parent_realize: The parent class' realize handler.
  * @parent_reset: The parent class' reset handler.
  *
  * An ARM CPU model.
@@ -42,6 +43,7 @@ typedef struct ARMCPUClass {
     CPUClass parent_class;
     /*< public >*/
 
+    DeviceRealize parent_realize;
     void (*parent_reset)(CPUState *cpu);
 } ARMCPUClass;
 
@@ -107,7 +109,6 @@ static inline ARMCPU *arm_env_get_cpu(CPUARMState *env)
 
 #define ENV_GET_CPU(e) CPU(arm_env_get_cpu(e))
 
-void arm_cpu_realize(ARMCPU *cpu);
 void register_cp_regs_for_features(ARMCPU *cpu);
 
 #endif

target-arm/cpu.c

@@ -147,15 +147,12 @@ static void arm_cpu_finalizefn(Object *obj)
     g_hash_table_destroy(cpu->cp_regs);
 }
 
-void arm_cpu_realize(ARMCPU *cpu)
+static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
 {
-    /* This function is called by cpu_arm_init() because it
-     * needs to do common actions based on feature bits, etc
-     * that have been set by the subclass init functions.
-     * When we have QOM realize support it should become
-     * a true realize function instead.
-     */
+    ARMCPU *cpu = ARM_CPU(dev);
+    ARMCPUClass *acc = ARM_CPU_GET_CLASS(dev);
     CPUARMState *env = &cpu->env;
+
     /* Some features automatically imply others: */
     if (arm_feature(env, ARM_FEATURE_V7)) {
         set_feature(env, ARM_FEATURE_VAPA);
@@ -197,6 +194,12 @@ void arm_cpu_realize(ARMCPU *cpu)
     }
 
     register_cp_regs_for_features(cpu);
+    arm_cpu_register_gdb_regs_for_features(cpu);
+
+    cpu_reset(CPU(cpu));
+    qemu_init_vcpu(env);
+
+    acc->parent_realize(dev, errp);
 }
 
 /* CPU models */
@@ -782,6 +785,10 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
 {
     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
     CPUClass *cc = CPU_CLASS(acc);
+    DeviceClass *dc = DEVICE_CLASS(oc);
+
+    acc->parent_realize = dc->realize;
+    dc->realize = arm_cpu_realizefn;
 
     acc->parent_reset = cc->reset;
     cc->reset = arm_cpu_reset;

target-arm/cpu.h

@@ -234,6 +234,7 @@ typedef struct CPUARMState {
 
 ARMCPU *cpu_arm_init(const char *cpu_model);
 void arm_translate_init(void);
+void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu);
 int cpu_arm_exec(CPUARMState *s);
 void do_interrupt(CPUARMState *);
 void switch_mode(CPUARMState *, int);

target-arm/helper.c

@@ -1272,14 +1272,22 @@ ARMCPU *cpu_arm_init(const char *cpu_model)
     cpu = ARM_CPU(object_new(object_class_get_name(oc)));
     env = &cpu->env;
     env->cpu_model_str = cpu_model;
-    arm_cpu_realize(cpu);
+
+    /* TODO this should be set centrally, once possible */
+    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
 
     if (tcg_enabled() && !inited) {
         inited = 1;
         arm_translate_init();
     }
 
-    cpu_reset(CPU(cpu));
+    return cpu;
+}
+
+void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu)
+{
+    CPUARMState *env = &cpu->env;
+
     if (arm_feature(env, ARM_FEATURE_NEON)) {
         gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg,
                                  51, "arm-neon.xml", 0);
@@ -1290,8 +1298,6 @@ ARMCPU *cpu_arm_init(const char *cpu_model)
         gdb_register_coprocessor(env, vfp_gdb_get_reg, vfp_gdb_set_reg,
                                  19, "arm-vfp.xml", 0);
     }
-    qemu_init_vcpu(env);
-    return cpu;
 }
 
 /* Sort alphabetically by type name, except for "any". */