==== 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                  0x119129720e0  P readable   P unreadable
mmap xz                0x1188f8e4000  P unreadable P unreadable
mmap x                 0x1192fbd4000  P readable   P readable  
mmap nrx               0x119124a4000  P readable   P readable  
mmap nwx               0x118e71d2000  P readable   P readable  
mmap xnwx              0x118d87f4000  P readable   P readable  
main                   0x11675c6c420  P readable   P unreadable
libc                   0x118a3b46170  P readable   P unreadable