==== 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                  0x12a25d9ee70  P readable   P unreadable
mmap xz                0x129cc903000  P unreadable P unreadable
mmap x                 0x129c29bc000  P readable   P readable  
mmap nrx               0x12a2ce37000  P readable   P readable  
mmap nwx               0x1299fae3000  P readable   P readable  
mmap xnwx              0x129c76cd000  P readable   P readable  
main                   0x1272d788430  P readable   P unreadable
libc                   0x12a1ff4def0  P readable   P unreadable