==== 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                  0xbf402c1a670  P readable   P unreadable
mmap xz                0xbf35d95a000  P unreadable P unreadable
mmap x                 0xbf366865000  P readable   P readable  
mmap nrx               0xbf3efc7e000  P readable   P readable  
mmap nwx               0xbf3c3f55000  P readable   P readable  
mmap xnwx              0xbf3738e0000  P readable   P readable  
main                   0xbf1372d7420  P readable   P unreadable
libc                   0xbf35a72cb70  P readable   P unreadable