v_putc            144 kern/subr_prf.c void (*v_putc)(int) = cnputc;	/* start with cnputc (normal cons) */
v_putc            349 kern/subr_prf.c 		(*v_putc)(c);
v_putc            130 sys/systm.h    extern void (*v_putc)(int); /* Virtual console putc routine */