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[Bug libc/6411] PowerPC: Extend fpu fenv operations to operate on 64-bit FPSCR
- From: "drepper at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: 1 Sep 2008 22:06:26 -0000
- Subject: [Bug libc/6411] PowerPC: Extend fpu fenv operations to operate on 64-bit FPSCR
- References: <20080415211350.6411.rsa@us.ibm.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From drepper at redhat dot com 2008-09-01 22:06 -------
(In reply to comment #10)
> 1.) Export a boolean symbol for runtime querying of the FPSCR feature
> availability, e.g. something like __ppc_feature_dfp_available.
We never export variables. Always export functions. And is this case it should
be a function to do the whole work and not just to query which instruction to use.
> 2.) In __libc_start_main search the auxv hwcap for the specific feature, i.e.
> PPC_FEATURE_HAS_DFP, and set the symbol __ppc_feature_dfp_available.
This information only has to be passed from ld.so into libm or libc (see above).
The data can be strored in rtld_globcal_ro.
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What |Removed |Added
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Status|ASSIGNED |WAITING
http://sourceware.org/bugzilla/show_bug.cgi?id=6411
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