PSL_C             725 arch/i386/i386/trap.c 		frame.tf_eflags &= ~PSL_C;	/* carry bit */
PSL_C             743 arch/i386/i386/trap.c 		frame.tf_eflags |= PSL_C;	/* carry bit */
PSL_C             777 arch/i386/i386/trap.c 	tf->tf_eflags &= ~PSL_C;