[Qemu-devel] [PATCH] mips: implement qmp query-cpu-definitions command

[Pavel Dovgalyuk]

This patch enables QMP-based querying of the available CPU types for MIPS
and MIPS64 platforms.

Signed-off-by: Pavel Dovgalyuk <pavel.dovga...@ispras.ru>
---
 monitor.c            |    2 +-
 target/mips/helper.c |   33 +++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/monitor.c b/monitor.c
index c09fa63940..25d3b141ad 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1165,7 +1165,7 @@ static void qmp_unregister_commands_hack(void)
     qmp_unregister_command(&qmp_commands, "query-cpu-model-comparison");
 #endif
 #if !defined(TARGET_PPC) && !defined(TARGET_ARM) && !defined(TARGET_I386) \
-    && !defined(TARGET_S390X)
+    && !defined(TARGET_S390X) && !defined(TARGET_MIPS)
     qmp_unregister_command(&qmp_commands, "query-cpu-definitions");
 #endif
 }
diff --git a/target/mips/helper.c b/target/mips/helper.c
index 8988452dbd..c84d056c09 100644
--- a/target/mips/helper.c
+++ b/target/mips/helper.c
@@ -24,6 +24,7 @@
 #include "exec/cpu_ldst.h"
 #include "exec/log.h"
 #include "hw/mips/cpudevs.h"
+#include "sysemu/arch_init.h"
 
 enum {
     TLBRET_XI = -6,
@@ -1472,3 +1473,35 @@ void QEMU_NORETURN do_raise_exception_err(CPUMIPSState 
*env,
 
     cpu_loop_exit_restore(cs, pc);
 }
+
+static void mips_cpu_add_definition(gpointer data, gpointer user_data)
+{
+    ObjectClass *oc = data;
+    CpuDefinitionInfoList **cpu_list = user_data;
+    CpuDefinitionInfoList *entry;
+    CpuDefinitionInfo *info;
+    const char *typename;
+
+    typename = object_class_get_name(oc);
+    info = g_malloc0(sizeof(*info));
+    info->name = g_strndup(typename,
+                           strlen(typename) - strlen("-" TYPE_MIPS_CPU));
+    info->q_typename = g_strdup(typename);
+
+    entry = g_malloc0(sizeof(*entry));
+    entry->value = info;
+    entry->next = *cpu_list;
+    *cpu_list = entry;
+}
+
+CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
+{
+    CpuDefinitionInfoList *cpu_list = NULL;
+    GSList *list;
+
+    list = object_class_get_list(TYPE_MIPS_CPU, false);
+    g_slist_foreach(list, mips_cpu_add_definition, &cpu_list);
+    g_slist_free(list);
+
+    return cpu_list;
+}