qom: Add cpu_exec_enter and cpu_exec_exit hooks

In preparation for removing a bunch of ifdefs from cpu_exec.

Cc: Andreas Färber <afaerber@suse.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1410626734-3804-2-git-send-email-rth@twiddle.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/qom/cpu.c b/qom/cpu.c
index ba8b402617..6a9d02ec63 100644
--- a/qom/cpu.c
+++ b/qom/cpu.c
@@ -202,7 +202,7 @@ static bool cpu_common_virtio_is_big_endian(CPUState *cpu)
     return target_words_bigendian();
 }
 
-static void cpu_common_debug_excp_handler(CPUState *cpu)
+static void cpu_common_noop(CPUState *cpu)
 {
 }
 
@@ -344,7 +344,9 @@ static void cpu_class_init(ObjectClass *klass, void *data)
     k->gdb_read_register = cpu_common_gdb_read_register;
     k->gdb_write_register = cpu_common_gdb_write_register;
     k->virtio_is_big_endian = cpu_common_virtio_is_big_endian;
-    k->debug_excp_handler = cpu_common_debug_excp_handler;
+    k->debug_excp_handler = cpu_common_noop;
+    k->cpu_exec_enter = cpu_common_noop;
+    k->cpu_exec_exit = cpu_common_noop;
     dc->realize = cpu_common_realizefn;
     /*
      * Reason: CPUs still need special care by board code: wiring up