==== 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                  0x814493c4ff0  P readable   P unreadable
mmap xz                0x8144626a000  P unreadable P unreadable
mmap x                 0x814d074a000  P readable   P readable  
mmap nrx               0x8146e838000  P readable   P readable  
mmap nwx               0x81419c50000  P readable   P readable  
mmap xnwx              0x814b076c000  P readable   P readable  
main                   0x811f7e6b430  P readable   P unreadable
libc                   0x81451f47ee0  P readable   P unreadable