==== 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                   0x75836441c0  P readable   P unreadable
mmap xz                 0x757e27f000  P unreadable P unreadable
mmap x                  0x7530398000  P readable   P readable  
mmap nrx                0x74d2fe8000  P readable   P readable  
mmap nwx                0x750a36f000  P readable   P readable  
mmap xnwx               0x74d77d4000  P readable   P readable  
main                    0x72becc6410  P readable   P unreadable
libc                    0x7537ea1ac0  P readable   P unreadable