linux-kernel - Re: [PATCH][RFC] getting rid of stupid loop in BUG()

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Message-Id: <20070725.122822.92554727.davem@davemloft.net>
Date:	Wed, 25 Jul 2007 12:28:22 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jeremy@...p.org
Cc:	torvalds@...ux-foundation.org, hpa@...or.com, kaos@....com.au,
	xyzzy@...akeasy.org, viro@....linux.org.uk,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH][RFC] getting rid of stupid loop in BUG()

From: Jeremy Fitzhardinge <jeremy@...p.org>
Date: Wed, 25 Jul 2007 10:00:20 -0700

> No, not any more.  The file and line info is out of line, in a separate
> section, indexed by the ud2a's eip.  The main problem with
> __builtin_trap is that there's no certain way to get the actual ud2a eip
> (ie, paste an asm label onto it).

Yes, I tried very hard to accomplish this myself, it would be
wonderful if it could be made to work.  I tried tricks using __label__
in inline asm, everything.

It would be workable if condition codes could be passed into inline
asm statements somehow, or the address of the builtin_trap() could
be reliably obtained.
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