==== 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                  0x839efdc0d30  P readable   P unreadable
mmap xz                0x839c41e7000  P unreadable P unreadable
mmap x                 0x839d16cc000  P readable   P readable  
mmap nrx               0x83a2daf4000  P readable   P readable  
mmap nwx               0x83a3e4e7000  P readable   P readable  
mmap xnwx              0x83a135b5000  P readable   P readable  
main                   0x837aa5f5420  P readable   P unreadable
libc                   0x839f1404050  P readable   P unreadable