From: Segher Boessenkool <segher@kernel.crashing.org>
To: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] powerpc/32: Remove __main()
Date: Tue, 8 Jun 2021 13:25:02 -0500 [thread overview]
Message-ID: <20210608182502.GZ18427@gate.crashing.org> (raw)
In-Reply-To: <d01028f8166b98584eec536b52f14c5e3f98ff6b.1623172922.git.christophe.leroy@csgroup.eu>
On Tue, Jun 08, 2021 at 05:22:51PM +0000, Christophe Leroy wrote:
> Comment says that __main() is there to make GCC happy.
>
> It's been there since the implementation of ppc arch in Linux 1.3.45.
>
> ppc32 is the only architecture having that. Even ppc64 doesn't have it.
>
> Seems like GCC is still happy without it.
>
> Drop it for good.
If you used G++ to build the kernel there could be a call to __main
inserted under some circumstances. It is used in functions called
"main" if there is no other way to do initialisations (this should not
happen if you use -ffreestanding, and there should not be a function
called "main" anyway, but who knows).
Either way, yup, this is ancient history :-)
Segher
next prev parent reply other threads:[~2021-06-08 18:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-08 17:22 [PATCH] powerpc/32: Remove __main() Christophe Leroy
2021-06-08 18:25 ` Segher Boessenkool [this message]
2021-06-18 3:51 ` Michael Ellerman
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