==== 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                  0xed03f4cca40  P readable   P unreadable
mmap xz                0xed02c4f5000  P unreadable P unreadable
mmap x                 0xecf7a6ab000  P readable   P readable  
mmap nrx               0xecf8c916000  P readable   P readable  
mmap nwx               0xed0293d0000  P readable   P readable  
mmap xnwx              0xecf4a0c2000  P readable   P readable  
main                   0xecd43c8c420  P readable   P unreadable
libc                   0xed030af2ec0  P readable   P unreadable