==== 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                  0x28169a09d60  P readable   P unreadable
mmap xz                0x28185c12000  P unreadable P unreadable
mmap x                 0x2813fa45000  P readable   P readable  
mmap nrx               0x28163890000  P readable   P readable  
mmap nwx               0x2816edcc000  P readable   P readable  
mmap xnwx              0x280fb3f5000  P readable   P readable  
main                   0x27ebc52a430  P readable   P unreadable
libc                   0x2810b835d10  P readable   P unreadable