==== 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                  0x6262f9a0b10  P readable   P unreadable
mmap xz                0x62625e9e000  P unreadable P unreadable
mmap x                 0x625c1e71000  P readable   P readable  
mmap nrx               0x62626024000  P readable   P readable  
mmap nwx               0x62592747000  P readable   P readable  
mmap xnwx              0x62540521000  P readable   P readable  
main                   0x62330530420  P readable   P unreadable
libc                   0x62546a731a0  P readable   P unreadable