From: Segher Boessenkool <segher@kernel.crashing.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org, Nicholas Piggin <npiggin@gmail.com>
Subject: Re: [PATCH v3] powerpc/64: Option to use ELF V2 ABI for big-endian kernels
Date: Mon, 18 May 2020 07:19:17 -0500 [thread overview]
Message-ID: <20200518121917.GJ31009@gate.crashing.org> (raw)
In-Reply-To: <87eerhagyd.fsf@mpe.ellerman.id.au>
Hi!
On Mon, May 18, 2020 at 04:35:22PM +1000, Michael Ellerman wrote:
> Nicholas Piggin <npiggin@gmail.com> writes:
> > Provide an option to build big-endian kernels using the ELF V2 ABI. This works
> > on GCC and clang (since about 2014). it is is not officially supported by the
> > GNU toolchain, but it can give big-endian kernels some useful advantages of
> > the V2 ABI (e.g., less stack usage).
> This doesn't build with clang:
>
> /tmp/aesp8-ppc-dad624.s: Assembler messages:
> /tmp/aesp8-ppc-dad624.s: Error: .size expression for aes_p8_set_encrypt_key does not evaluate to a constant
What does this assembler code that clang doesn't swallow look like? Is
that valid code? Etc.
Segher
next prev parent reply other threads:[~2020-05-18 12:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-29 1:19 [PATCH v3] powerpc/64: Option to use ELF V2 ABI for big-endian kernels Nicholas Piggin
2020-05-18 6:35 ` Michael Ellerman
2020-05-18 12:19 ` Segher Boessenkool [this message]
2020-05-21 2:23 ` Nicholas Piggin
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