UWM_CALLER
if (!(u->flags & UWM_CALLER))
TEST_WITH_FLAGS(UWM_CALLER | UWM_SP),
TEST_WITH_FLAGS(UWM_CALLER | UWM_SP | UWM_REGS),
TEST_WITH_FLAGS(UWM_CALLER | UWM_SP | UWM_REGS | UWM_SWITCH_STACK),
TEST_WITH_FLAGS(UWM_THREAD | UWM_CALLER | UWM_SP),
TEST_WITH_FLAGS(UWM_IRQ | UWM_CALLER | UWM_SP),
TEST_WITH_FLAGS(UWM_IRQ | UWM_CALLER | UWM_SP | UWM_REGS),
TEST_WITH_FLAGS(UWM_IRQ | UWM_CALLER | UWM_SP | UWM_REGS | UWM_SWITCH_STACK),