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[Bug dynamic-link/15128] dynamic loader may clobber floating-point parameters on AArch64
- From: "bugdal at aerifal dot cx" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 11 Feb 2013 13:36:22 +0000
- Subject: [Bug dynamic-link/15128] dynamic loader may clobber floating-point parameters on AArch64
- Auto-submitted: auto-generated
- References: <bug-15128-131@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=15128
--- Comment #4 from Rich Felker <bugdal at aerifal dot cx> 2013-02-11 13:36:22 UTC ---
Putting ridiculous limitations outside of the standard ABI on what registers
may be used by any function that happens to get called during the resolver is
not a valid fix; if nothing else it's too fragile. The resolver is only called
once per symbol. A few extra cycles to save and restore fp registers will not
matter; the savings elsewhere from being able to use vector ops probably more
than compensate anyway.
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