==== 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                  0x80a0b587180  P readable   P unreadable
mmap xz                0x80a08a45000  P unreadable P unreadable
mmap x                 0x80a686ae000  P readable   P readable  
mmap nrx               0x809f6014000  P readable   P readable  
mmap nwx               0x809bcc1a000  P readable   P readable  
mmap xnwx              0x809d8c47000  P readable   P readable  
main                   0x80787e62420  P readable   P unreadable
libc                   0x80a339705d0  P readable   P unreadable