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Re: [RFC 2.0] Implementing hwcap2
- From: Richard Henderson <rth at twiddle dot net>
- To: Roland McGrath <roland at hack dot frob dot com>
- Cc: "Ryan S. Arnold" <rsa at us dot ibm dot com>, libc-alpha at sourceware dot org
- Date: Tue, 09 Apr 2013 06:24:07 -0500
- Subject: Re: [RFC 2.0] Implementing hwcap2
- References: <20130328 dot 173934 dot 1310725546115298719 dot davem at davemloft dot net> <201303281931 dot 43830 dot vapier at gentoo dot org> <20130328234033 dot 9197A2C0A7 at topped-with-meat dot com> <20130328 dot 201048 dot 1654197573467873843 dot davem at davemloft dot net> <20130408220507 dot 5699D2C088 at topped-with-meat dot com>
On 2013-04-08 17:05, Roland McGrath wrote:
The calling convention for IFUNC resolvers is machine-specific.
Thus, it's up to each machine maintainer to decide what it should be
for his machine. Given how rare IFUNC use still is, I'd say it's
also up to each machine maintainer to decide whether or not an
incompatible change to the convention is acceptable at this stage.
While I suppose that's a valid position, my position is that merely
adding a second 32-bit argument to the ifunc resolver maintains
compatability across all machines, and that is good for everyone.
r~