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[PATCH-for-9.1 07/21] target/mips: Make MIPS_CPU common to new MIPS32_CP


From: Philippe Mathieu-Daudé
Subject: [PATCH-for-9.1 07/21] target/mips: Make MIPS_CPU common to new MIPS32_CPU / MIPS64_CPU types
Date: Fri, 15 Mar 2024 14:08:55 +0100

"target/foo/cpu-qom.h" can not use any target specific definitions.

Currently "target/mips/cpu-qom.h" defines TYPE_MIPS_CPU depending
on the mips(32)/mips64 build type. This doesn't scale in a
heterogeneous context where we need to access both types concurrently.

In order to do that, introduce the new MIPS32_CPU / MIPS64_CPU types,
both inheriting a common TYPE_MIPS_CPU base type.

Keep the current CPU types registered in mips_register_cpudef_type()
as 32 or 64-bit, but instead of depending on the binary built being
targeting 32/64-bit, check whether the CPU is 64-bit by looking at
the CPU_MIPS64 bit.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/mips/cpu-qom.h              | 13 +++++++------
 target/mips/cpu.c                  | 11 ++++++++++-
 target/mips/sysemu/mips-qmp-cmds.c | 26 ++------------------------
 3 files changed, 19 insertions(+), 31 deletions(-)

diff --git a/target/mips/cpu-qom.h b/target/mips/cpu-qom.h
index 0eea2a2598..bf464f16b6 100644
--- a/target/mips/cpu-qom.h
+++ b/target/mips/cpu-qom.h
@@ -1,5 +1,5 @@
 /*
- * QEMU MIPS CPU
+ * QEMU MIPS CPU QOM header (target agnostic)
  *
  * Copyright (c) 2012 SUSE LINUX Products GmbH
  *
@@ -22,14 +22,15 @@
 
 #include "hw/core/cpu.h"
 
-#ifdef TARGET_MIPS64
-#define TYPE_MIPS_CPU "mips64-cpu"
-#else
-#define TYPE_MIPS_CPU "mips-cpu"
-#endif
+#define TYPE_MIPS_CPU   "mips-cpu"
+#define TYPE_MIPS32_CPU "mips32-cpu"
+#define TYPE_MIPS64_CPU "mips64-cpu"
 
 OBJECT_DECLARE_CPU_TYPE(MIPSCPU, MIPSCPUClass, MIPS_CPU)
 
+OBJECT_DECLARE_CPU_TYPE(MIPS32CPU, MIPSCPUClass, MIPS32_CPU)
+OBJECT_DECLARE_CPU_TYPE(MIPS64CPU, MIPSCPUClass, MIPS64_CPU)
+
 #define MIPS_CPU_TYPE_SUFFIX "-" TYPE_MIPS_CPU
 #define MIPS_CPU_TYPE_NAME(model) model MIPS_CPU_TYPE_SUFFIX
 
diff --git a/target/mips/cpu.c b/target/mips/cpu.c
index c096d97fe3..f3ea6175f2 100644
--- a/target/mips/cpu.c
+++ b/target/mips/cpu.c
@@ -604,6 +604,14 @@ static const TypeInfo mips_cpu_types[] = {
         .abstract       = true,
         .class_size     = sizeof(MIPSCPUClass),
         .class_init     = mips_cpu_class_init,
+    }, {
+        .name           = TYPE_MIPS32_CPU,
+        .parent         = TYPE_MIPS_CPU,
+        .abstract       = true,
+    }, {
+        .name           = TYPE_MIPS64_CPU,
+        .parent         = TYPE_MIPS_CPU,
+        .abstract       = true,
     }
 };
 
@@ -620,7 +628,8 @@ static void mips_register_cpudef_type(const struct 
mips_def_t *def)
     char *typename = mips_cpu_type_name(def->name);
     TypeInfo ti = {
         .name = typename,
-        .parent = TYPE_MIPS_CPU,
+        .parent = def->insn_flags & CPU_MIPS64
+                  ? TYPE_MIPS64_CPU : TYPE_MIPS32_CPU,
         .class_init = mips_cpu_cpudef_class_init,
         .class_data = (void *)def,
     };
diff --git a/target/mips/sysemu/mips-qmp-cmds.c 
b/target/mips/sysemu/mips-qmp-cmds.c
index 7340ac70ba..329db3a028 100644
--- a/target/mips/sysemu/mips-qmp-cmds.c
+++ b/target/mips/sysemu/mips-qmp-cmds.c
@@ -8,31 +8,9 @@
 
 #include "qemu/osdep.h"
 #include "qapi/qapi-commands-machine-target.h"
-#include "cpu.h"
-
-static void mips_cpu_add_definition(gpointer data, gpointer user_data)
-{
-    ObjectClass *oc = data;
-    CpuDefinitionInfoList **cpu_list = user_data;
-    CpuDefinitionInfo *info;
-    const char *typename;
-
-    typename = object_class_get_name(oc);
-    info = g_malloc0(sizeof(*info));
-    info->name = cpu_model_from_type(typename);
-    info->q_typename = g_strdup(typename);
-
-    QAPI_LIST_PREPEND(*cpu_list, info);
-}
+#include "qapi/commands-target-compat.h"
 
 CpuDefinitionInfoList *qmp_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;
+    return generic_query_cpu_definitions(errp);
 }
-- 
2.41.0




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