[PATCH-for-9.1 05/21] cpus: Open code OBJECT_DECLARE_TYPE() in OBJECT_DECLARE_CPU_TYPE()

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

Since the OBJECT_DECLARE_CPU_TYPE() macro uses the abstract ArchCPU
type, when declaring multiple CPUs of the same ArchCPU type we get
an error related to the indirect G_DEFINE_AUTOPTR_CLEANUP_FUNC()
use within OBJECT_DECLARE_TYPE():

  target/mips/cpu-qom.h:31:1: error: redefinition of 'glib_autoptr_clear_ArchCPU'
  OBJECT_DECLARE_CPU_TYPE(MIPS64CPU, MIPSCPUClass, MIPS64_CPU)
  ^
  include/hw/core/cpu.h:82:5: note: expanded from macro 'OBJECT_DECLARE_CPU_TYPE'
      OBJECT_DECLARE_TYPE(ArchCPU, CpuClassType, CPU_MODULE_OBJ_NAME);
      ^
  include/qom/object.h:237:5: note: expanded from macro 'OBJECT_DECLARE_TYPE'
      G_DEFINE_AUTOPTR_CLEANUP_FUNC(InstanceType, object_unref) \
      ^
  /usr/include/glib-2.0/glib/gmacros.h:1371:3: note: expanded from macro 'G_DEFINE_AUTOPTR_CLEANUP_FUNC'
    _GLIB_DEFINE_AUTOPTR_CLEANUP_FUNCS(TypeName, TypeName, func)
    ^
  /usr/include/glib-2.0/glib/gmacros.h:1354:36: note: expanded from macro '_GLIB_DEFINE_AUTOPTR_CLEANUP_FUNCS'
    static G_GNUC_UNUSED inline void _GLIB_AUTOPTR_CLEAR_FUNC_NAME(TypeName) (TypeName *_ptr)                     \
                                     ^
  /usr/include/glib-2.0/glib/gmacros.h:1338:49: note: expanded from macro '_GLIB_AUTOPTR_CLEAR_FUNC_NAME'
  #define _GLIB_AUTOPTR_CLEAR_FUNC_NAME(TypeName) glib_autoptr_clear_##TypeName
                                                  ^
  <scratch space>:54:1: note: expanded from here
  glib_autoptr_clear_ArchCPU
  ^
  target/mips/cpu-qom.h:30:1: note: previous definition is here
  OBJECT_DECLARE_CPU_TYPE(MIPS32CPU, MIPSCPUClass, MIPS32_CPU)
  ^

Avoid that problem by expanding the OBJECT_DECLARE_TYPE() macro
within OBJECT_DECLARE_CPU_TYPE().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
---
TODO: check rth comment:
What about adding an OBJECT_DECLARE_CPU_SUBTYPE that omits half the stuff instead?
We don't need another object typedef at all, for instance.
---
 include/hw/core/cpu.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index ec14f74ce5..4c2e5095bf 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -78,7 +78,12 @@ DECLARE_CLASS_CHECKERS(CPUClass, CPU,
  */
 #define OBJECT_DECLARE_CPU_TYPE(CpuInstanceType, CpuClassType, CPU_MODULE_OBJ_NAME) \
     typedef struct ArchCPU CpuInstanceType; \
-    OBJECT_DECLARE_TYPE(ArchCPU, CpuClassType, CPU_MODULE_OBJ_NAME);
+    typedef struct CpuClassType CpuClassType; \
+    \
+    G_DEFINE_AUTOPTR_CLEANUP_FUNC(CpuInstanceType, object_unref) \
+    \
+    DECLARE_OBJ_CHECKERS(CpuInstanceType, CpuClassType, \
+                         CPU_MODULE_OBJ_NAME, TYPE_##CPU_MODULE_OBJ_NAME)
 
 typedef enum MMUAccessType {
     MMU_DATA_LOAD  = 0,
-- 
2.41.0