```
machines/m68k/machine.c: In function 'gen_dc':
machines/m68k/machine.c:3503:7: warning: right shift count >= width of type
vumax=zumand(zumrshift(vumax,ul2zum(32UL)),ul2zum(0xffffffff));
^
```
With -std=c9x/gnu9x/c99 -m32, `long` will be a 32-bit type. Specify `long long` to guarantee 64-bit size and get rid of warnings like the above, and possible errors in the generated code.
