Re: New optimized string routines for Intel and alignment of stack.

[Mike Frysinger <vapier at gentoo dot org>]

On 07 Jun 2016 17:35, Joseph Myers wrote:
> On Tue, 7 Jun 2016, Florian Weimer wrote:
> > On 06/07/2016 07:56 AM, Carlos O'Donell wrote:
> > > We have had several users that have built legacy applications
> > > for 32-bit x86 with stack alignment that does not match the
> > > ABI.
> > 
> > Let's say the GNU project broke the i386 ABI, which is more accurate. The
> > stack pointer alignment requirement is a recent change.
> 
> I place the ABI change around 2006, when GCC stopped using 
> -mpreferred-stack-boundary=2 even with -Os, and so compatibility 
> requirements as applying to GLIBC_2.4 and older symbols.
> 
> https://sourceware.org/ml/libc-alpha/2013-08/msg00372.html

indeed, the ship has sailed.  i don't think trying to revert things after
10 years makes sense.

https://groups.google.com/forum/#!msg/ia32-abi/T5s-UGmUO_E/0-9QgPuB8_MJ
-mike

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