[PATCH v7 03/19] hw/arm: Add DEFINE_MACHINE_ARM() / DEFINE_MACHINE_AARCH64() macros

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

A machine defined with the DEFINE_MACHINE_ARM() macro will
be available in both qemu-system-arm and qemu-system-aarch64
binaries.

One defined with DEFINE_MACHINE_AARCH64() will only be
available in the qemu-system-aarch64 binary.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
---
 include/hw/arm/machines-qom.h | 28 ++++++++++++++++++++++++++++
 target/arm/machine.c          | 18 ++++++++++++++++++
 2 files changed, 46 insertions(+)

diff --git a/include/hw/arm/machines-qom.h b/include/hw/arm/machines-qom.h
index a17225f5f92..3f64d5eb024 100644
--- a/include/hw/arm/machines-qom.h
+++ b/include/hw/arm/machines-qom.h
@@ -9,10 +9,38 @@
 #ifndef HW_ARM_MACHINES_QOM_H
 #define HW_ARM_MACHINES_QOM_H
 
+#include "hw/boards.h"
+
 #define TYPE_TARGET_ARM_MACHINE \
         "target-info-arm-machine"
 
 #define TYPE_TARGET_AARCH64_MACHINE \
         "target-info-aarch64-machine"
 
+/*
+ * A machine filtered with arm_machine_interfaces[] or
+ * arm_aarch64_machine_interfaces[] will be available
+ * in both qemu-system-arm and qemu-system-aarch64 binaries.
+ *
+ * One filtered with aarch64_machine_interfaces[] will only
+ * be available in the qemu-system-aarch64 binary.
+ */
+extern const InterfaceInfo arm_machine_interfaces[];
+extern const InterfaceInfo arm_aarch64_machine_interfaces[];
+extern const InterfaceInfo aarch64_machine_interfaces[];
+
+/*
+ * A machine defined with the DEFINE_MACHINE_ARM() macro will be
+ * available in both qemu-system-arm and qemu-system-aarch64 binaries.
+ *
+ * One defined with DEFINE_MACHINE_AARCH64() will only be available in
+ * the qemu-system-aarch64 binary.
+ */
+#define DEFINE_MACHINE_ARM(namestr, machine_initfn) \
+        DEFINE_MACHINE_WITH_INTERFACE_ARRAY(namestr, machine_initfn, \
+                                            arm_machine_interfaces)
+#define DEFINE_MACHINE_AARCH64(namestr, machine_initfn) \
+        DEFINE_MACHINE_WITH_INTERFACE_ARRAY(namestr, machine_initfn, \
+                                            aarch64_machine_interfaces)
+
 #endif
diff --git a/target/arm/machine.c b/target/arm/machine.c
index 44a0cf844b0..0befdb0b28a 100644
--- a/target/arm/machine.c
+++ b/target/arm/machine.c
@@ -9,6 +9,7 @@
 #include "migration/qemu-file-types.h"
 #include "migration/vmstate.h"
 #include "target/arm/gtimer.h"
+#include "hw/arm/machines-qom.h"
 
 static bool vfp_needed(void *opaque)
 {
@@ -1212,3 +1213,20 @@ const VMStateDescription vmstate_arm_cpu = {
         NULL
     }
 };
+
+const InterfaceInfo arm_machine_interfaces[] = {
+    { TYPE_TARGET_ARM_MACHINE },
+    { TYPE_TARGET_AARCH64_MACHINE },
+    { }
+};
+
+const InterfaceInfo arm_aarch64_machine_interfaces[] = {
+    { TYPE_TARGET_ARM_MACHINE },
+    { TYPE_TARGET_AARCH64_MACHINE },
+    { }
+};
+
+const InterfaceInfo aarch64_machine_interfaces[] = {
+    { TYPE_TARGET_AARCH64_MACHINE },
+    { }
+};
-- 
2.51.0