linux-kernel - Re: "N" symbols and System.map

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Date:	Mon, 04 May 2009 14:26:14 -0700
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	Andreas Schwab <schwab@...ux-m68k.org>
CC:	Sam Ravnborg <sam@...nborg.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-arch@...r.kernel.org
Subject: Re: "N" symbols and System.map

Andreas Schwab wrote:
> Sam Ravnborg <sam@...nborg.org> writes:
> 
>> Andreas - can you explain what is happning here?
> 
> My best guess would be that it has to do with the fact that the _end
> symbol is attached to the .end section which is located before the debug
> sections, but the .end section is empty, so the symbol has the same
> address as the following debug section.  The ppc linker script does not
> attach the _end symbol to any section, so it becomes an absolute symbol.
> 

Yes; we used to do that in x86 too, but it messes up the post-processing 
for the relocatable kernel.

	-hpa
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