Re: Natural alignment used on NetBSD/m68k

[Anders Magnusson <ragge%tethuvudet.se@localhost>]

> > Do you happen to know whether NetBSD has
> >         always used four bytes or did that
> >         
> >         change in the past?
> >         
> >       
>       
>       AFAIK, it's always been four bytes, at least since the switch to
>       ELF.
    Looking at hp300/include/param.h rev. 1.1 from 1993:
http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/arch/hp300/include/param.h?rev=1.1;content-type=text%2Fx-chdr
/*
 * Round p (pointer or byte index) up to a correctly-aligned value
 * for all data types (int, long, ...).   The result is u_int and
 * must be cast to any desired pointer type.
 */
#define	ALIGN(p)	(((u_int)(p) + (sizeof(int) - 1)) &~ (sizeof(int) - 1))

So, it seems as it has always been 4 bytes.

Side-note:  Even VAX has always (since 32V in 1979) used 4-bytes alignment (even if it didn't have to).

-- R