==== 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                  0x5c060ad9980  P readable   P unreadable
mmap xz                0x5c0ba699000  P unreadable P unreadable
mmap x                 0x5c0d2a18000  P readable   P readable  
mmap nrx               0x5c0f9f1a000  P readable   P readable  
mmap nwx               0x5c0a5f78000  P readable   P readable  
mmap xnwx              0x5c08c5fb000  P readable   P readable  
main                   0x5be3404c420  P readable   P unreadable
libc                   0x5c0df813c00  P readable   P unreadable