==== 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                  0x38f3d517210  P readable   P unreadable
mmap xz                0x39000a47000  P unreadable P unreadable
mmap x                 0x38fd3f97000  P readable   P readable  
mmap nrx               0x38f62555000  P readable   P readable  
mmap nwx               0x38fd5543000  P readable   P readable  
mmap xnwx              0x38f82e56000  P readable   P readable  
main                   0x38d30e4f420  P readable   P unreadable
libc                   0x38f9943dca0  P readable   P unreadable