==== 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                  0x91c46398d00  P readable   P unreadable
mmap xz                0x91c408a0000  P unreadable P unreadable
mmap x                 0x91cbc1eb000  P readable   P readable  
mmap nrx               0x91bfd1f9000  P readable   P readable  
mmap nwx               0x91cc5840000  P readable   P readable  
mmap xnwx              0x91c9ecf0000  P readable   P readable  
main                   0x919cb98e420  P readable   P unreadable
libc                   0x91c4cd35da0  P readable   P unreadable