From: Albert ARIBAUD <albert.aribaud@free.fr>
To: u-boot@lists.denx.de
Subject: [U-Boot] arm: wrong Relocation and not cleared BSS
Date: Sat, 30 Oct 2010 18:01:37 +0200 [thread overview]
Message-ID: <4CCC4161.8000807@free.fr> (raw)
In-Reply-To: <20101030143917.042051522C0@gemini.denx.de>
Le 30/10/2010 16:39, Wolfgang Denk a ?crit :
> Dear Albert ARIBAUD,
>
> In message<4CCC242C.8070303@free.fr> you wrote:
>>
>> You mean the rule is not respected for u-boot? then you should point out
>> (or better yet, submit a patch to fix) parts of code which assume BSS is
>
> It's a requirement of a standard C execution environment. BSS must
> _always_ be cleared.
Just re-checked the C99 specs, and yes, all static scope vars must be
initialized, so I stand corrected as for BSS initialization. I still
think, though, that one should not count on a BSS-allocated variable to
be zero at program start, and if one wants a variable to be zero, one
must initialize it explicitly.
Anyway, as I said, the nand_chip[] issue is not, I believe, related to
initializing BSS, as the writing and reading both occur after setting up
the C environment for running from RAM.
> Best regards,
>
> Wolfgang Denk
Amicalement,
--
Albert.
next prev parent reply other threads:[~2010-10-30 16:01 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-30 13:08 [U-Boot] arm: wrong Relocation and not cleared BSS Alexander Holler
2010-10-30 13:36 ` Albert ARIBAUD
2010-10-30 13:45 ` Alexander Holler
2010-10-30 13:57 ` Albert ARIBAUD
2010-10-30 14:07 ` Alexander Holler
2010-10-30 14:39 ` Wolfgang Denk
2010-10-30 16:01 ` Albert ARIBAUD [this message]
2010-10-30 16:10 ` Wolfgang Denk
2010-10-30 14:37 ` Wolfgang Denk
2010-10-30 14:36 ` Wolfgang Denk
2010-10-31 10:59 ` Alexander Holler
2010-10-31 11:58 ` Wolfgang Denk
2010-10-31 12:21 ` Albert ARIBAUD
2010-10-31 16:18 ` Alexander Holler
2010-10-30 15:00 ` Wolfgang Denk
2010-10-30 17:21 ` Albert ARIBAUD
2010-10-30 18:01 ` Wolfgang Denk
2010-10-31 7:44 ` Heiko Schocher
2010-10-30 15:15 ` Darius Augulis
2010-10-30 16:44 ` Albert ARIBAUD
2010-10-30 20:03 ` Alexander Holler
2010-10-30 20:51 ` Alexander Holler
2010-10-31 7:47 ` Heiko Schocher
2010-11-02 5:39 ` V, Aneesh
2010-11-02 5:58 ` V, Aneesh
2010-11-02 6:32 ` Albert ARIBAUD
2010-11-02 7:18 ` V, Aneesh
2010-11-02 7:37 ` [U-Boot] Bad page state in process 'swapper' sywang
2010-11-02 7:44 ` Albert ARIBAUD
2010-11-02 8:13 ` sywang
2010-11-02 8:44 ` Wolfgang Denk
2010-11-02 8:40 ` Wolfgang Denk
2010-11-03 2:29 ` sywang
2010-11-02 7:41 ` [U-Boot] arm: wrong Relocation and not cleared BSS Albert ARIBAUD
2010-11-02 8:53 ` V, Aneesh
2010-11-02 9:04 ` Albert ARIBAUD
2010-10-31 7:43 ` Heiko Schocher
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