==== 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                  0x3e5862813c0  P readable   P unreadable
mmap xz                0x3e6600e3000  P unreadable P unreadable
mmap x                 0x3e5f6cdf000  P readable   P readable  
mmap nrx               0x3e61b15f000  P readable   P readable  
mmap nwx               0x3e625ca1000  P readable   P readable  
mmap xnwx              0x3e59e7bd000  P readable   P readable  
main                   0x3e361aae410  P readable   P unreadable
libc                   0x3e5f96e3e20  P readable   P unreadable