==== run-regress-xonly ====
cc -O2 -pipe  -g -Wall -Wpointer-arith -Wuninitialized -Wstrict-prototypes -Wmissing-prototypes -Wunused -Wsign-compare -Wshadow  -MD -MP  -c /home/src/regress/sys/kern/xonly/xonly.c
cc   -o xonly xonly.o 
./xonly
                                      userland     kernel
ld.so                  0xdacb16824a0  P readable   P unreadable
mmap xz                0xdac65842000  P unreadable P unreadable
mmap x                 0xdac40185000  P readable   P readable  
mmap nrx               0xdac607ba000  P readable   P readable  
mmap nwx               0xdac79408000  P readable   P readable  
mmap xnwx              0xdac569b4000  P readable   P readable  
main                   0xda9dc76a420  P readable   P unreadable
libc                   0xdabf0daebd0  P readable   P unreadable