==== 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                  0x43edb12fa70  P readable   P unreadable
mmap xz                0x43e90d33000  P unreadable P unreadable
mmap x                 0x43f62bf1000  P readable   P readable  
mmap nrx               0x43f34695000  P readable   P readable  
mmap nwx               0x43f45158000  P readable   P readable  
mmap xnwx              0x43ec29f1000  P readable   P readable  
main                   0x43c7a693430  P readable   P unreadable
libc                   0x43f02a59720  P readable   P unreadable