cpu: Factor out cpu_generic_init()

All targets using it gain the ability to set -cpu name,key=value,...
options via the default TYPE_CPU CPUClass::parse_features() implementation.

Signed-off-by: Andreas Färber <afaerber@suse.de>

include/qom/cpu.h

@@ -351,6 +351,17 @@ void cpu_reset(CPUState *cpu);
  */
 ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model);
 
+/**
+ * cpu_generic_init:
+ * @typename: The CPU base type.
+ * @cpu_model: The model string including optional parameters.
+ *
+ * Instantiates a CPU, processes optional parameters and realizes the CPU.
+ *
+ * Returns: A #CPUState or %NULL if an error occurred.
+ */
+CPUState *cpu_generic_init(const char *typename, const char *cpu_model);
+
 /**
  * cpu_has_work:
  * @cpu: The vCPU to check.

qom/cpu.c

@@ -23,6 +23,7 @@
 #include "sysemu/kvm.h"
 #include "qemu/notify.h"
 #include "qemu/log.h"
+#include "qemu/error-report.h"
 #include "sysemu/sysemu.h"
 
 bool cpu_exists(int64_t id)
@@ -39,6 +40,46 @@ bool cpu_exists(int64_t id)
     return false;
 }
 
+CPUState *cpu_generic_init(const char *typename, const char *cpu_model)
+{
+    char *str, *name, *featurestr;
+    CPUState *cpu;
+    ObjectClass *oc;
+    CPUClass *cc;
+    Error *err = NULL;
+
+    str = g_strdup(cpu_model);
+    name = strtok(str, ",");
+
+    oc = cpu_class_by_name(typename, name);
+    if (oc == NULL) {
+        g_free(str);
+        return NULL;
+    }
+
+    cpu = CPU(object_new(object_class_get_name(oc)));
+    cc = CPU_GET_CLASS(cpu);
+
+    featurestr = strtok(NULL, ",");
+    cc->parse_features(cpu, featurestr, &err);
+    g_free(str);
+    if (err != NULL) {
+        goto out;
+    }
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
+
+out:
+    if (err != NULL) {
+        error_report("%s", error_get_pretty(err));
+        error_free(err);
+        object_unref(OBJECT(cpu));
+        return NULL;
+    }
+
+    return cpu;
+}
+
 bool cpu_paging_enabled(const CPUState *cpu)
 {
     CPUClass *cc = CPU_GET_CLASS(cpu);

target-arm/helper.c

@@ -2186,19 +2186,7 @@ void register_cp_regs_for_features(ARMCPU *cpu)
 
 ARMCPU *cpu_arm_init(const char *cpu_model)
 {
-    ARMCPU *cpu;
-    ObjectClass *oc;
-
-    oc = cpu_class_by_name(TYPE_ARM_CPU, cpu_model);
-    if (!oc) {
-        return NULL;
-    }
-    cpu = ARM_CPU(object_new(object_class_get_name(oc)));
-
-    /* TODO this should be set centrally, once possible */
-    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
-
-    return cpu;
+    return ARM_CPU(cpu_generic_init(TYPE_ARM_CPU, cpu_model));
 }
 
 void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu)

target-cris/cpu.c

@@ -89,18 +89,7 @@ static ObjectClass *cris_cpu_class_by_name(const char *cpu_model)
 
 CRISCPU *cpu_cris_init(const char *cpu_model)
 {
-    CRISCPU *cpu;
-    ObjectClass *oc;
-
-    oc = cris_cpu_class_by_name(cpu_model);
-    if (oc == NULL) {
-        return NULL;
-    }
-    cpu = CRIS_CPU(object_new(object_class_get_name(oc)));
-
-    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
-
-    return cpu;
+    return CRIS_CPU(cpu_generic_init(TYPE_CRIS_CPU, cpu_model));
 }
 
 /* Sort alphabetically by VR. */

target-lm32/helper.c

@@ -182,18 +182,7 @@ void lm32_cpu_do_interrupt(CPUState *cs)
 
 LM32CPU *cpu_lm32_init(const char *cpu_model)
 {
-    LM32CPU *cpu;
-    ObjectClass *oc;
-
-    oc = cpu_class_by_name(TYPE_LM32_CPU, cpu_model);
-    if (oc == NULL) {
-        return NULL;
-    }
-    cpu = LM32_CPU(object_new(object_class_get_name(oc)));
-
-    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
-
-    return cpu;
+    return LM32_CPU(cpu_generic_init(TYPE_LM32_CPU, cpu_model));
 }
 
 /* Some soc ignores the MSB on the address bus. Thus creating a shadow memory

target-moxie/cpu.c

@@ -136,18 +136,7 @@ static const MoxieCPUInfo moxie_cpus[] = {
 
 MoxieCPU *cpu_moxie_init(const char *cpu_model)
 {
-    MoxieCPU *cpu;
-    ObjectClass *oc;
-
-    oc = moxie_cpu_class_by_name(cpu_model);
-    if (oc == NULL) {
-        return NULL;
-    }
-    cpu = MOXIE_CPU(object_new(object_class_get_name(oc)));
-
-    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
-
-    return cpu;
+    return MOXIE_CPU(cpu_generic_init(TYPE_MOXIE_CPU, cpu_model));
 }
 
 static void cpu_register(const MoxieCPUInfo *info)

target-openrisc/cpu.c

@@ -208,18 +208,7 @@ static void openrisc_cpu_register_types(void)
 
 OpenRISCCPU *cpu_openrisc_init(const char *cpu_model)
 {
-    OpenRISCCPU *cpu;
-    ObjectClass *oc;
-
-    oc = openrisc_cpu_class_by_name(cpu_model);
-    if (oc == NULL) {
-        return NULL;
-    }
-    cpu = OPENRISC_CPU(object_new(object_class_get_name(oc)));
-
-    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
-
-    return cpu;
+    return OPENRISC_CPU(cpu_generic_init(TYPE_OPENRISC_CPU, cpu_model));
 }
 
 /* Sort alphabetically by type name, except for "any". */

target-ppc/translate_init.c

@@ -8220,26 +8220,7 @@ static ObjectClass *ppc_cpu_class_by_name(const char *name)
 
 PowerPCCPU *cpu_ppc_init(const char *cpu_model)
 {
-    PowerPCCPU *cpu;
-    ObjectClass *oc;
-    Error *err = NULL;
-
-    oc = ppc_cpu_class_by_name(cpu_model);
-    if (oc == NULL) {
-        return NULL;
-    }
-
-    cpu = POWERPC_CPU(object_new(object_class_get_name(oc)));
-
-    object_property_set_bool(OBJECT(cpu), true, "realized", &err);
-    if (err != NULL) {
-        error_report("%s", error_get_pretty(err));
-        error_free(err);
-        object_unref(OBJECT(cpu));
-        return NULL;
-    }
-
-    return cpu;
+    return POWERPC_CPU(cpu_generic_init(TYPE_POWERPC_CPU, cpu_model));
 }
 
 /* Sort by PVR, ordering special case "host" last. */

target-sh4/cpu.c

@@ -148,18 +148,7 @@ static ObjectClass *superh_cpu_class_by_name(const char *cpu_model)
 
 SuperHCPU *cpu_sh4_init(const char *cpu_model)
 {
-    SuperHCPU *cpu;
-    ObjectClass *oc;
-
-    oc = superh_cpu_class_by_name(cpu_model);
-    if (oc == NULL) {
-        return NULL;
-    }
-    cpu = SUPERH_CPU(object_new(object_class_get_name(oc)));
-
-    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
-
-    return cpu;
+    return SUPERH_CPU(cpu_generic_init(TYPE_SUPERH_CPU, cpu_model));
 }
 
 static void sh7750r_cpu_initfn(Object *obj)

target-unicore32/helper.c

@@ -28,19 +28,12 @@
 CPUUniCore32State *uc32_cpu_init(const char *cpu_model)
 {
     UniCore32CPU *cpu;
-    CPUUniCore32State *env;
-    ObjectClass *oc;
 
-    oc = cpu_class_by_name(TYPE_UNICORE32_CPU, cpu_model);
-    if (oc == NULL) {
+    cpu = UNICORE32_CPU(cpu_generic_init(TYPE_UNICORE32_CPU, cpu_model));
+    if (cpu == NULL) {
         return NULL;
     }
-    cpu = UNICORE32_CPU(object_new(object_class_get_name(oc)));
-    env = &cpu->env;
-
-    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
-
-    return env;
+    return &cpu->env;
 }
 
 uint32_t HELPER(clo)(uint32_t x)