==== 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                   0x78d588e490  P readable   P unreadable
mmap xz                 0x78a5ec3000  P unreadable P unreadable
mmap x                  0x7882baa000  P readable   P readable  
mmap nrx                0x79080c6000  P readable   P readable  
mmap nwx                0x78989bf000  P readable   P readable  
mmap xnwx               0x7917c78000  P readable   P readable  
main                    0x761e8d4420  P readable   P unreadable
libc                    0x78740dc120  P readable   P unreadable