From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andreas Schwab <schwab@linux-m68k.org>
Subject: Re: Writable sys_call_table (was: Re: [uClinux-dev] [PATCH] m68k: Merge mmu and non-mmu versions of sys_call_table)
Date: Tue, 19 Apr 2011 15:25:45 +0200
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In-Reply-To: <201104191416.35746.arnd@arndb.de> (Arnd Bergmann's message of
	"Tue, 19 Apr 2011 14:16:35 +0200")
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To: Arnd Bergmann <arnd@arndb.de>
Cc: Finn Thain <fthain@telegraphics.com.au>, Geert Uytterhoeven <geert@linux-m68k.org>, Greg Ungerer <gerg@snapgear.com>, Gavin Lambert <gavinl@compacsort.com>, uClinux development list <uclinux-dev@uclinux.org>, Philippe De Muyter <phdm@macqel.be>, Linux/m68k <linux-m68k@lists.linux-m68k.org>, linux-arch@vger.kernel.org

Arnd Bergmann <arnd@arndb.de> writes:

> But it's not an array of pointers to function with signature
> void f(void).

It does not matter which kind of function pointer you use since all
function pointers are alike (unlike data pointers).

> It's an array of void pointers that we assign to function pointers of
> various types.

It is an array of function pointers.  It is only void * because that
suppresses a warning (it is only accessed through assembly, so any type
the size of a pointer would do).

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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"And now for something completely different."