Date: Thu, 9 Jun 2016 19:31:28 +0000 From: Brooks Davis <brooks@freebsd.org> To: Justin Hibbits <jhibbits@freebsd.org> Cc: freebsd-arch@freebsd.org Subject: Re: PowerPC 64-bit time_t Message-ID: <20160609193128.GB34204@spindle.one-eyed-alien.net> In-Reply-To: <3FB65E20-0376-4041-86DE-F8CAB7F37314@freebsd.org> References: <3FB65E20-0376-4041-86DE-F8CAB7F37314@freebsd.org>
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--2fHTh5uZTiUOsy+g Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jun 09, 2016 at 01:41:52PM -0400, Justin Hibbits wrote: > At the devsummit earlier today I mentioned for FreeBSD 12 wanting 64-=20 > bit time_t across the board. It was pointed out that the only ones =20 > with 32-bit time_t are i386 and powerpc (32-bit). I've made the =20 > changes necessary for at least kernel (world is still building right =20 > now), but it's obviously an ABI and KBI incompatible change. =20 > Addressing KBI is a nonissue, as that's expected to break at major =20 > releases. ABI is another issue. I'm unsure how to properly address =20 > ABI breakage -- bumping libc's .so version, or reversion all symbols =20 > that use something with time_t, or something else. If I can address =20 > it before the code freeze, it could be done for FreeBSD 11, which =20 > leaves about 6 hours from now. For i386, the only practical option is going to be a new TARGET_ARCH and likely ELF machine type. For powerpc, I'd be tempted to just break the ABI and leave a way to switch it back for people who build products where the ABI change is an issue. -- Brooks --2fHTh5uZTiUOsy+g Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJXWcQQAAoJEKzQXbSebgfAlgwH/i/dMVG5k8zIiA4H1Nlcm+nz /zUIh9W0FYSIyP9iZjO3m0khnvqPZhf0H6tossmItgkQq9FyVGQWBiswzv3Xxqp5 sRvE863z8smCrMG7E39WazpwPLmaRVUu3wgFLir4aaI14bsYIbNsjRPEMdDJj3x8 J+6zgt2fEFiFpdmTQayQdV2PI5gL9VhFEzfnZu3vDbqNvQ4mSx5U0spedGqG+NoW GfnPQS4ZolNQgBzMpzJtXSlboKGn8OSzEGoFIyOWi6q5Gr4y1DeY38qp3i6SWwf0 zM+3lQgBXeeynGYUuOcWaEjC8sV/r6ave57r7nidzT1jwzHUS+BHbIFgWBVGwFQ= =10uM -----END PGP SIGNATURE----- --2fHTh5uZTiUOsy+g--
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