==== 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                  0x271d24a17a0  P readable   P unreadable
mmap xz                0x2720121e000  P unreadable P unreadable
mmap x                 0x271d101a000  P readable   P readable  
mmap nrx               0x271836c6000  P readable   P readable  
mmap nwx               0x2719ef35000  P readable   P readable  
mmap xnwx              0x2717ebaa000  P readable   P readable  
main                   0x26f56d2d420  P readable   P unreadable
libc                   0x27240cbd930  P readable   P unreadable