linux-kernel - Re: [PATCH] arm64: LLVMLinux: Provide __aeabi

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Date:	Mon, 8 Sep 2014 14:01:48 -0700
From:	Mark Charlebois <charlebm@...il.com>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	Arnd Bergmann <arnd@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Behan Webster <behanw@...verseincode.com>,
	Will Deacon <Will.Deacon@....com>,
	"zhichang.yuan@...aro.org" <zhichang.yuan@...aro.org>,
	"dsaxena@...aro.org" <dsaxena@...aro.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: LLVMLinux: Provide __aeabi_* symbols which are
 needed for clang

On Sun, Sep 7, 2014 at 12:30 AM, Catalin Marinas
<catalin.marinas@....com> wrote:
> On 7 Sep 2014, at 03:30, Mark Charlebois <charlebm@...il.com> wrote:
>> On Sat, Sep 6, 2014 at 7:16 AM, Arnd Bergmann <arnd@...db.de> wrote:
>>>
>>> On Friday 05 September 2014 16:23:14 behanw@...verseincode.com wrote:
>>>> + *  Copyright (C) 2012  Mark Charlebois
>>>> + */
>>>> +
>>>> +/*
>>>> + * EABI routines
>>>
>>> Does EABI specify these function names? I would think that they are
>>> just random libgcc (whatever that is called in clang) functions.
>>
>> http://infocenter.arm.com/help/topic/com.arm.doc.ihi0043d/IHI0043D_rtabi.pdf
>>
>> See section 4.3.4 Memory copying, clearing, and setting
>
> What does this document have to do with arm64 (AArch64, A64)? We don’t
> need such symbols on arm64. Also, the arm64 kernel links with libgcc (no
> immediate need AFAICT but the compiler does not guarantee the intrinsics
> would always be generated inline).

[reposting in plain text]

This patch was made early in the arm64 kernel support. I just retested
and you are correct, it is no longer needed.  My apologies to all.

-Mark

>
> Catalin
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