[RFC PATCH v4 04/30] target/loongarch: Implement qmp_query_cpu_definitions()

[Xiaojuan Yang <yangxiaojuan@loongson.cn>]

This patch introduce qmp_query_cpu_definitions interface.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 qapi/machine-target.json |  6 ++++--
 target/loongarch/cpu.c   | 26 ++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/qapi/machine-target.json b/qapi/machine-target.json
index f5ec4bc172..682dc86b42 100644
--- a/qapi/machine-target.json
+++ b/qapi/machine-target.json
@@ -324,7 +324,8 @@
                    'TARGET_ARM',
                    'TARGET_I386',
                    'TARGET_S390X',
-                   'TARGET_MIPS' ] } }
+                   'TARGET_MIPS',
+                   'TARGET_LOONGARCH64' ] } }
 
 ##
 # @query-cpu-definitions:
@@ -340,4 +341,5 @@
                    'TARGET_ARM',
                    'TARGET_I386',
                    'TARGET_S390X',
-                   'TARGET_MIPS' ] } }
+                   'TARGET_MIPS',
+                   'TARGET_LOONGARCH64' ] } }
diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 6e3dc5e6fa..690eeea2e6 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -351,3 +351,29 @@ static const TypeInfo loongarch_cpu_type_infos[] = {
 };
 
 DEFINE_TYPES(loongarch_cpu_type_infos)
+
+static void loongarch_cpu_add_definition(gpointer data, gpointer user_data)
+{
+    ObjectClass *oc = data;
+    CpuDefinitionInfoList **cpu_list = user_data;
+    CpuDefinitionInfo *info = g_new0(CpuDefinitionInfo, 1);
+    const char *typename = object_class_get_name(oc);
+
+    info->name = g_strndup(typename,
+                           strlen(typename) - strlen("-" TYPE_LOONGARCH_CPU));
+    info->q_typename = g_strdup(typename);
+
+    QAPI_LIST_PREPEND(*cpu_list, info);
+}
+
+CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
+{
+    CpuDefinitionInfoList *cpu_list = NULL;
+    GSList *list;
+
+    list = object_class_get_list(TYPE_LOONGARCH_CPU, false);
+    g_slist_foreach(list, loongarch_cpu_add_definition, &cpu_list);
+    g_slist_free(list);
+
+    return cpu_list;
+}
-- 
2.27.0