mono_arch_flush_register_windows (); \
MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0)); \
mono_arch_flush_register_windows (); \
MONO_CONTEXT_SET_IP ((ctx), (start_func)); \
MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0)); \