map_addr_proc
map_addr_proc(&addr, rlen, 0, 1, as->a_userlimit, ttoproc(caller), 0);
extern void map_addr_proc(caddr_t *addrp, size_t len, offset_t off,
map_addr_proc(addrp, len, off, vacalign, userlimit, curproc, flags);
extern void map_addr_proc(caddr_t *, size_t, offset_t, int, caddr_t,
map_addr_proc(addrp, len, off, vacalign, userlimit, p, flags);