==== 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                  0x94182d6f880  P readable   P unreadable
mmap xz                0x9421d35f000  P unreadable P unreadable
mmap x                 0x94229b21000  P readable   P readable  
mmap nrx               0x9419c439000  P readable   P readable  
mmap nwx               0x94247c92000  P readable   P readable  
mmap xnwx              0x94187251000  P readable   P readable  
main                   0x93f5d607420  P readable   P unreadable
libc                   0x94193f78390  P readable   P unreadable