From: Nick Desaulniers <ndesaulniers@google.com>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: Jian Cai <jiancai@google.com>,
Manoj Gupta <manojgupta@google.com>,
Luis Lozano <llozano@google.com>,
clang-built-linux <clang-built-linux@googlegroups.com>,
Russell King <linux@armlinux.org.uk>,
Nathan Chancellor <natechancellor@gmail.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] Make iwmmxt.S support Clang's integrated assembler
Date: Tue, 10 Nov 2020 11:26:32 -0800 [thread overview]
Message-ID: <CAKwvOdkXz5wOwKQDsi5jt21ov3xETSByAqxGLQ=7U6Gsp46zcQ@mail.gmail.com> (raw)
In-Reply-To: <CAMj1kXHDzj3Q-sCv1szseUC7g2bWRFeVP6WME-sMqDf+0wyU8Q@mail.gmail.com>
On Mon, Nov 9, 2020 at 11:36 PM Ard Biesheuvel <ardb@kernel.org> wrote:
>
> BE32 != BE8
Oh? Sorry, what does BE8 stand for? arch/arm/mm/Kconfig says:
CONFIG_CPU_ENDIAN_BE8
Support for the BE-8 (big-endian) mode on ARMv6 and ARMv7 processors.
vs:
CPU_ENDIAN_BE32
Support for the BE-32 (big-endian) mode on pre-ARMv6 processors.
So BE8 seems newer? It looks like in my tests, enabling
CPU_BIG_ENDIAN via menuconfig enabled CPU_ENDIAN_BE8.
>
> Please use, e.g., ixp4xx_defconfig with IWMMXT and BE enabled. It
> seems like .inst does the right thing here, i.e., the assembler knows
> that it should emit BE for BE32 and LE for BE8, but it needs to be
> confirmed.
Ah and ixp4xx_defconfig selects CPU_ENDIAN_BE32. Yep, and the
disassemblies of those match, too.
--
Thanks,
~Nick Desaulniers
next prev parent reply other threads:[~2020-11-10 19:26 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-09 23:27 [PATCH] ARM: do not assemble iwmmxt.S with LLVM toolchain Jian Cai
2020-04-10 0:01 ` Nick Desaulniers
2020-04-10 0:12 ` Nathan Chancellor
2020-04-10 6:38 ` Sedat Dilek
2020-04-10 7:44 ` Nathan Chancellor
2020-04-10 9:56 ` Arnd Bergmann
2020-04-10 11:15 ` Ard Biesheuvel
2020-04-10 12:33 ` Russell King - ARM Linux admin
2020-04-10 13:09 ` Ard Biesheuvel
2020-04-13 20:45 ` Nick Desaulniers
2020-04-14 8:59 ` Ard Biesheuvel
2020-04-14 18:38 ` Nick Desaulniers
2020-04-14 20:53 ` Kees Cook
2020-04-15 10:32 ` Ard Biesheuvel
2020-04-15 12:58 ` Arnd Bergmann
2020-04-15 14:44 ` Russell King - ARM Linux admin
2020-04-19 11:08 ` Stefan Agner
2020-04-15 15:44 ` Kees Cook
2020-04-17 14:12 ` Masahiro Yamada
2020-04-13 19:23 ` Nick Desaulniers
2020-04-13 21:00 ` Russell King - ARM Linux admin
2020-11-04 20:44 ` Nick Desaulniers
2020-04-13 19:20 ` Nick Desaulniers
2020-04-13 21:15 ` Andrew Lunn
2020-04-10 16:59 ` Andrew Lunn
2020-04-10 18:34 ` Russell King - ARM Linux admin
2020-04-13 19:26 ` Nick Desaulniers
2020-04-13 21:53 ` Russell King - ARM Linux admin
2020-11-07 0:10 ` [PATCH v2] Make iwmmxt.S support Clang's integrated assembler Jian Cai
2020-11-07 8:29 ` Ard Biesheuvel
2020-11-10 1:55 ` Nick Desaulniers
2020-11-10 7:35 ` Ard Biesheuvel
2020-11-10 19:26 ` Nick Desaulniers [this message]
[not found] ` <CA+SOCLJSSR62VfWhKx9R1cxT-CHXD7RN08eJBYxUH8zzyWos9Q@mail.gmail.com>
2020-11-10 20:11 ` Nick Desaulniers
2020-11-10 20:38 ` Arnd Bergmann
2020-11-10 21:35 ` Ard Biesheuvel
2020-11-12 8:42 ` Ard Biesheuvel
2020-11-12 13:06 ` Arnd Bergmann
2020-11-12 20:07 ` [PATCH v3] " Jian Cai
2020-11-17 0:37 ` [PATCH v4] " Jian Cai
2020-11-17 1:20 ` Nick Desaulniers
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