==== 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                  0xad1f7732c70  P readable   P unreadable
mmap xz                0xad1dbb1a000  P unreadable P unreadable
mmap x                 0xad18d084000  P readable   P readable  
mmap nrx               0xad16c3bb000  P readable   P readable  
mmap nwx               0xad1edd88000  P readable   P readable  
mmap xnwx              0xad1b793f000  P readable   P readable  
main                   0xacef9088430  P readable   P unreadable
libc                   0xad16de9eee0  P readable   P unreadable