==== 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                  0x48cab58a6f0  P readable   P unreadable
mmap xz                0x48cfd890000  P unreadable P unreadable
mmap x                 0x48d254e9000  P readable   P readable  
mmap nrx               0x48ccdc3e000  P readable   P readable  
mmap nwx               0x48cff658000  P readable   P readable  
mmap xnwx              0x48c66771000  P readable   P readable  
main                   0x48a33f57420  P readable   P unreadable
libc                   0x48c908d8360  P readable   P unreadable