On Apr 3, 2018, at 10:27 AM, Eric W. Biederman <ebiederm@xxxxxxxxxxxx> wrote:
Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> writes:
On Mon, Apr 2, 2018 at 10:17 PM, Eric W. Biederman <ebiederm@xxxxxxxxxxxx> 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
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