==== 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                  0xa3cba0dc850  P readable   P unreadable
mmap xz                0xa3d1b58c000  P unreadable P unreadable
mmap x                 0xa3c85648000  P readable   P readable  
mmap nrx               0xa3c7c944000  P readable   P readable  
mmap nwx               0xa3d0f076000  P readable   P readable  
mmap xnwx              0xa3c46fca000  P readable   P readable  
main                   0xa3a1d2eb420  P readable   P unreadable
libc                   0xa3ccab84d00  P readable   P unreadable