[Qemu-devel] [RFC 5/8] libqemustub: sysbus_get_default() stub

[Eduardo Habkost <ehabkost@redhat.com>]

The stub will be used on cases where sysbus.c is not compiled in (e.g.
*-user).

Note that code that uses NULL as the bus with qdev{_try,}_create()
implicitly uses sysbus_get_default() as the bus, and will still require
sysbus.c to be compiled in.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
Changes v1 -> v2:
 - Use the new QEMU_WEAK_ALIAS mechanism, instead of GCC_WEAK

Changes v2 -> v3:
 - Use the new libqemustub.a mechanism, instead of QEMU_WEAK_ALIAS
---
 stubs/Makefile.objs | 1 +
 stubs/sysbus.c      | 6 ++++++
 2 files changed, 7 insertions(+)
 create mode 100644 stubs/sysbus.c

diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
index ca2197e..7672c69 100644
--- a/stubs/Makefile.objs
+++ b/stubs/Makefile.objs
@@ -7,4 +7,5 @@ stub-obj-y += get-fd.o
 stub-obj-y += set-fd-handler.o
 stub-obj-y += reset.o
 stub-obj-y += vmstate.o
+stub-obj-y += sysbus.o
 stub-obj-$(CONFIG_WIN32) += fd-register.o
diff --git a/stubs/sysbus.c b/stubs/sysbus.c
new file mode 100644
index 0000000..e134965
--- /dev/null
+++ b/stubs/sysbus.c
@@ -0,0 +1,6 @@
+#include "hw/qdev-core.h"
+
+BusState *sysbus_get_default(void)
+{
+    return NULL;
+}
-- 
1.7.11.7