Re: prebuilding 32-bit caches on a 64-bit system

Mike Frysinger <[email protected]> Fri, 19 Jan 2018 19:05:45 -0500

Newsgroups	gmane.comp.fonts.fontconfig
Message-ID	<20180120000545.GD14915@vapier>

On 20 Jan 2018 12:04, Lawrence D'Oliveiro wrote:
> On Fri, 19 Jan 2018 17:12:00 -0500, Mike Frysinger wrote:
> > there's also pdp endian, but that's probably never been tested
> > anywhere, and fontconfig should just delete it.
> 
> You mean the way 32-bit integers were arranged on the PDP-11? 16-bit
> integers were little-endian, but for some reason for 32-bit, the high
> word was put at the lower address. So the byte numbering, instead of
> going 0-1-2-3 as per usual little-endian, was 2-3-0-1.
> 
> Of course, this was purely a software convention, since the hardware
> was entirely 16-bit.

yes, that weirdness.  for some reason "PDP_ENDIAN" checks still get
copied & pasted into codebases.  i think people look at a system
header, see all three, then get excited about being super portable.
we should torch it all with a flamethrower at this point.
-mike

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