Date: Mon, 11 Sep 2017 12:05:02 -0700 From: Marcel Moolenaar <marcel@xcllnt.net> To: John Baldwin <jhb@freebsd.org> Cc: arch@freebsd.org Subject: Re: ELF auxiliary vector tags Message-ID: <26458208-EC4B-4647-8271-DF480EDD57DF@xcllnt.net> In-Reply-To: <ecca895d-2553-f2bf-4a44-5e379c07a9d4@FreeBSD.org> References: <ecca895d-2553-f2bf-4a44-5e379c07a9d4@FreeBSD.org>
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> On Sep 8, 2017, at 10:36 AM, John Baldwin <jhb@freebsd.org> wrote: > I know Justin changed time_t to 64-bit on 32-bit powerpc which = effectively broke 32-bit powerpc earlier, but this change would break = both 32-bit and 64-bit powerpc and is probably more disruptive (in = theory some binaries might have worked with a wrong time_t, but renumber = AT_STACKPROT, etc. will probably break every binary). That probably depends on the byte order. I would think widening time_t on a big-endian machine is a lot more disruptive than doing it on a little-endian machine. That said and along the lines of what @imp said: Maybe add a a MD macro (e.g. NO_MI_AUX_VECTORS) whose existence suppresses the MI definitions of AT_* so that MD headers can define their own? --=20 Marcel Moolenaar marcel@xcllnt.net
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