On Apr 3, 2018, at 10:27 AM, Eric W. Biederman <[email protected]> wrote:
> Geert Uytterhoeven <[email protected]> writes: > >> On Mon, Apr 2, 2018 at 10:17 PM, Eric W. Biederman <[email protected]> >> wrote: >> >>> A 2-byte alignment for 4 byte pointers. That is a new one to me. >> >> Not just for pointers, also for int and long. > > The smallest I have seen previously has been 64bit integers having > 32bit alignment. 32bit entities having only 16bit alignment on a 32bit > arch was simply a surprise. Even when it works there tend to be good > reasons not to do that by default. The 68K architecture began as 16-bit with the 68000. Rather than tightening requirements, the 68020 not only maintained compatibility with 16-bit alignment, but also forgave byte-misaligned data accesses (albeit with a performance penalty). Jumping to an odd address is still an error, though. Josh
