==== 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                  0x30ec68794f0  P readable   P unreadable
mmap xz                0x30f049ec000  P unreadable P unreadable
mmap x                 0x30ec9210000  P readable   P readable  
mmap nrx               0x30ee0924000  P readable   P readable  
mmap nwx               0x30f950f6000  P readable   P readable  
mmap xnwx              0x30ed5277000  P readable   P readable  
main                   0x30cbceed410  P readable   P unreadable
libc                   0x30f7b1d6f00  P readable   P unreadable