From: rth@redhat.com (Richard Henderson)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: Convert BUG() to use unreachable()
Date: Mon, 21 Dec 2009 11:30:43 -0800 [thread overview]
Message-ID: <4B2FCCE3.1090209@redhat.com> (raw)
In-Reply-To: <20091217181718.GA4440@n2100.arm.linux.org.uk>
On 12/17/2009 10:17 AM, Russell King - ARM Linux wrote:
> How is "size-optimal trap" defined?
E.g. Sparc and MIPS have "tcc" instructions that trap based on the
condition codes, and so we eliminate the branch. That's the only
optimization we apply with __builtin_trap.
> Let me put it another way: I want this function to terminate with an
> explicit NULL pointer dereference in every case.
Then just use that.
r~
next prev parent reply other threads:[~2009-12-21 19:30 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-08 9:55 [PATCH] ARM: Convert BUG() to use unreachable() Uwe Kleine-König
2009-12-10 17:50 ` Russell King - ARM Linux
[not found] ` <4B213627.5000007@caviumnetworks.com>
2009-12-16 13:58 ` Uwe Kleine-König
2009-12-17 15:01 ` Jamie Lokier
[not found] ` <4B2A65C6.7080009@caviumnetworks.com>
2009-12-17 17:17 ` Richard Guenther
2009-12-17 18:17 ` Russell King - ARM Linux
2009-12-17 18:35 ` Joe Buck
2009-12-17 19:06 ` Russell King - ARM Linux
2009-12-17 19:14 ` Joe Buck
2009-12-17 19:33 ` Russell King - ARM Linux
2009-12-17 19:38 ` Jamie Lokier
2009-12-17 19:48 ` Russell King - ARM Linux
2009-12-17 19:58 ` Russell King - ARM Linux
2009-12-17 19:04 ` Jamie Lokier
2009-12-21 19:30 ` Richard Henderson [this message]
2009-12-21 20:10 ` Russell King - ARM Linux
2009-12-22 14:09 ` Dave Korn
2009-12-22 14:12 ` Russell King - ARM Linux
2009-12-22 14:49 ` Dave Korn
2009-12-22 11:33 ` Paolo Bonzini
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