1 files changed, 28 insertions, 1 deletions

diff --git a/target-xtensa/cpu.c b/target-xtensa/cpu.c
index d2bcfc69a2..e966aa0a79 100644
--- a/target-xtensa/cpu.c
+++ b/target-xtensa/cpu.c
@@ -64,10 +64,32 @@ static void xtensa_cpu_reset(CPUState *s)
     reset_mmu(env);
 }
 
+static ObjectClass *xtensa_cpu_class_by_name(const char *cpu_model)
+{
+    ObjectClass *oc;
+    char *typename;
+
+    if (cpu_model == NULL) {
+        return NULL;
+    }
+
+    typename = g_strdup_printf("%s-" TYPE_XTENSA_CPU, cpu_model);
+    oc = object_class_by_name(typename);
+    g_free(typename);
+    if (oc == NULL || !object_class_dynamic_cast(oc, TYPE_XTENSA_CPU) ||
+        object_class_is_abstract(oc)) {
+        return NULL;
+    }
+    return oc;
+}
+
 static void xtensa_cpu_realizefn(DeviceState *dev, Error **errp)
 {
+    CPUState *cs = CPU(dev);
     XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(dev);
 
+    cs->gdb_num_regs = xcc->config->gdb_regmap.num_regs;
+
     xcc->parent_realize(dev, errp);
 }
 
@@ -75,10 +97,12 @@ static void xtensa_cpu_initfn(Object *obj)
 {
     CPUState *cs = CPU(obj);
     XtensaCPU *cpu = XTENSA_CPU(obj);
+    XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(obj);
     CPUXtensaState *env = &cpu->env;
     static bool tcg_inited;
 
     cs->env_ptr = env;
+    env->config = xcc->config;
     cpu_exec_init(env);
 
     if (tcg_enabled() && !tcg_inited) {
@@ -105,9 +129,12 @@ static void xtensa_cpu_class_init(ObjectClass *oc, void *data)
     xcc->parent_reset = cc->reset;
     cc->reset = xtensa_cpu_reset;
 
+    cc->class_by_name = xtensa_cpu_class_by_name;
     cc->do_interrupt = xtensa_cpu_do_interrupt;
     cc->dump_state = xtensa_cpu_dump_state;
     cc->set_pc = xtensa_cpu_set_pc;
+    cc->gdb_read_register = xtensa_cpu_gdb_read_register;
+    cc->gdb_write_register = xtensa_cpu_gdb_write_register;
 #ifndef CONFIG_USER_ONLY
     cc->get_phys_page_debug = xtensa_cpu_get_phys_page_debug;
 #endif
@@ -119,7 +146,7 @@ static const TypeInfo xtensa_cpu_type_info = {
     .parent = TYPE_CPU,
     .instance_size = sizeof(XtensaCPU),
     .instance_init = xtensa_cpu_initfn,
-    .abstract = false,
+    .abstract = true,
     .class_size = sizeof(XtensaCPUClass),
     .class_init = xtensa_cpu_class_init,
 };