==== 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                  0x49dfc4357e0  P readable   P unreadable
mmap xz                0x49e3b918000  P unreadable P unreadable
mmap x                 0x49dc4bc8000  P readable   P readable  
mmap nrx               0x49e78100000  P readable   P readable  
mmap nwx               0x49e26389000  P readable   P readable  
mmap xnwx              0x49e27b42000  P readable   P readable  
main                   0x49b80c4f420  P readable   P unreadable
libc                   0x49e07aa1250  P readable   P unreadable