From: Rich Felker <dalias@libc.org>
To: musl@lists.openwall.com
Subject: Re: [PATCH] arm assembly changes for clang compatibility
Date: Fri, 7 Nov 2014 08:26:44 -0500 [thread overview]
Message-ID: <20141107132644.GF22465@brightrain.aerifal.cx> (raw)
In-Reply-To: <ac01cb47.dNq.dMV.1S.cbknHt@mailjet.com>
On Fri, Nov 07, 2014 at 11:48:05AM +0100, Joakim Sindholt wrote:
> On Fri, 2014-11-07 at 10:37 +0100, Luca Barbato wrote:
> > On 06/11/14 23:38, Joakim Sindholt wrote:
> > > + .word 0xecbc8b10 /* vldmia ip!, {d8-d15} */
> >
> > clang is already notified?
> >
> > lu
>
> I'm not sure what you mean. There isn't a bug in clang as it will
> happily accept "vldmia ip!, {d8-d15}". It just won't accept "ldc p11,
> cr8, [ip], #64" because that's not a legal instruction. Musl just uses
> it because it aliases to the former and gas won't complain about missing
> ARM features.
Yes, the problem is that we can't use the official mnemonic because
the assembler will reject it when the target model lacks fpu, and we
can't use the generic coprocessor mnemonic because ARM and clang
intentionally removed support for it. :(
Rich
next prev parent reply other threads:[~2014-11-07 13:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1415313526-3350676-1-git-send-email-opensource@zhasha.com>
2014-11-06 22:38 ` Joakim Sindholt
2014-11-07 9:37 ` Luca Barbato
2014-11-07 10:48 ` Joakim Sindholt
2014-11-07 13:26 ` Rich Felker [this message]
2014-11-22 20:54 ` Joakim Sindholt
2014-11-22 21:09 ` Rich Felker
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