From: "Andreas Bießmann" <andreas.devel@googlemail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH RFC 3/3] arm920t: do not relocate NULL pointer
Date: Tue, 30 Nov 2010 09:50:45 +0100 [thread overview]
Message-ID: <4CF4BAE5.2060107@gmail.com> (raw)
In-Reply-To: <OF43754554.CFE59E69-ONC12577EB.00301013-C12577EB.00304296@transmode.se>
Dear All,
Am 30.11.2010 09:47, schrieb Joakim Tjernlund:
>>
>> Le 30/11/2010 08:06, Andreas Bie?mann a ?crit :
>>> Signed-off-by: Andreas Bie?mann<andreas.devel@googlemail.com>
>>
>>> + cmp r1, #0 /* symbol == NULL ? */
>>> + beq fixnext
>>
>> Nak. Don't hide a null pointer. NULL pointers are *not* relocated, since
>> they are a constant. If a NULL ends up in relocation tables, that is
>> because of a corruption *or* because it was to be relocated, and should
>> thus never be ignored.
>
> Depends, if the same routine is used for relocating fixups you need
> this test.
> Undefined weaks will generate a NULL fixup entry.
As mentioned by Jens and one other some time ago. Albert, please build
e.g. at91rm9200ek boards and search for board_reset(), defined in
arch/arm/cpu/arm920t/at91/reset.c
regards
Andreas Bie?mann
next prev parent reply other threads:[~2010-11-30 8:50 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-29 19:58 [U-Boot] Try to fix Board eb_cpux9k2 Jens Scharsig
2010-11-30 7:06 ` [U-Boot] [PATCH RFC 0/3] chenages to arm relocation Andreas Bießmann
2010-11-30 7:06 ` [U-Boot] [PATCH RFC 1/3] arm920t: do not set register useless Andreas Bießmann
2010-11-30 8:07 ` Albert ARIBAUD
2010-11-30 8:28 ` Andreas Bießmann
2010-11-30 9:25 ` Albert ARIBAUD
2010-11-30 7:06 ` [U-Boot] [PATCH RFC 2/3] arm920t: do not use r8 for relocation Andreas Bießmann
2010-11-30 8:22 ` Albert ARIBAUD
2010-11-30 8:35 ` Andreas Bießmann
2010-11-30 8:58 ` Albert ARIBAUD
2010-11-30 7:06 ` [U-Boot] [PATCH RFC 3/3] arm920t: do not relocate NULL pointer Andreas Bießmann
2010-11-30 8:32 ` Albert ARIBAUD
2010-11-30 8:47 ` Joakim Tjernlund
2010-11-30 8:50 ` Andreas Bießmann [this message]
2010-11-30 9:02 ` Albert ARIBAUD
2010-11-30 9:41 ` Joakim Tjernlund
2010-11-30 11:48 ` Andreas Bießmann
2010-11-30 11:56 ` Joakim Tjernlund
2010-11-30 8:37 ` [U-Boot] Try to fix Board eb_cpux9k2 Albert ARIBAUD
2010-12-02 20:27 ` Jens Scharsig
2010-12-02 20:49 ` Albert ARIBAUD
2010-12-01 6:44 ` Albert ARIBAUD
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