==== 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                  0x67632ae8000  P readable   P unreadable
mmap xz                0x6763c445000  P unreadable P unreadable
mmap x                 0x675cd9e0000  P readable   P readable  
mmap nrx               0x676991be000  P readable   P readable  
mmap nwx               0x6766d463000  P readable   P readable  
mmap xnwx              0x675f6e4f000  P readable   P readable  
main                   0x673a3cec420  P readable   P unreadable
libc                   0x67672683700  P readable   P unreadable