==== 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                  0xacc852db660  P readable   P unreadable
mmap xz                0xaccde14a000  P unreadable P unreadable
mmap x                 0xacd23905000  P readable   P readable  
mmap nrx               0xacceb31c000  P readable   P readable  
mmap nwx               0xacc33ad3000  P readable   P readable  
mmap xnwx              0xaccbc5c0000  P readable   P readable  
main                   0xaca31883410  P readable   P unreadable
libc                   0xaccd53086b0  P readable   P unreadable