target/loongarch: Add new object class for loongarch32 cpus

Add object class stub for future loongarch32 cpus.

Signed-off-by: Jiajie Chen <c@jia.je>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20230817093121.1053890-3-gaosong@loongson.cn>
[Rebased on TYPE_LOONGARCH64_CPU introduction]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230821125959.28666-8-philmd@linaro.org>

target/loongarch/cpu.c

@@ -726,6 +726,10 @@ static void loongarch_cpu_class_init(ObjectClass *c, void *data)
 #endif
 }
 
+static void loongarch32_cpu_class_init(ObjectClass *c, void *data)
+{
+}
+
 static gchar *loongarch64_gdb_arch_name(CPUState *cs)
 {
     return g_strdup("loongarch64");
@@ -758,6 +762,13 @@ static const TypeInfo loongarch_cpu_type_infos[] = {
         .class_size = sizeof(LoongArchCPUClass),
         .class_init = loongarch_cpu_class_init,
     },
+    {
+        .name = TYPE_LOONGARCH32_CPU,
+        .parent = TYPE_LOONGARCH_CPU,
+
+        .abstract = true,
+        .class_init = loongarch32_cpu_class_init,
+    },
     {
         .name = TYPE_LOONGARCH64_CPU,
         .parent = TYPE_LOONGARCH_CPU,

target/loongarch/cpu.h

@@ -382,6 +382,7 @@ struct ArchCPU {
 };
 
 #define TYPE_LOONGARCH_CPU "loongarch-cpu"
+#define TYPE_LOONGARCH32_CPU "loongarch32-cpu"
 #define TYPE_LOONGARCH64_CPU "loongarch64-cpu"
 
 OBJECT_DECLARE_CPU_TYPE(LoongArchCPU, LoongArchCPUClass,