==== 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                  0x8f6c736c070  P readable   P unreadable
mmap xz                0x8f6def7e000  P unreadable P unreadable
mmap x                 0x8f755e3f000  P readable   P readable  
mmap nrx               0x8f735a8c000  P readable   P readable  
mmap nwx               0x8f6c023b000  P readable   P readable  
mmap xnwx              0x8f6c475e000  P readable   P readable  
main                   0x8f4bff79420  P readable   P unreadable
libc                   0x8f6fcdf7a40  P readable   P unreadable