From: Mike Dunn <mikedunn@newsguy.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] compiled failed when turned off gcc optimazition
Date: Mon, 01 Jul 2013 11:03:01 -0700 [thread overview]
Message-ID: <51D1C455.9010801@newsguy.com> (raw)
In-Reply-To: <20130701113747.14BD9380DF7@gemini.denx.de>
On 07/01/2013 04:37 AM, Wolfgang Denk wrote:
> Dear TigerLiu at viatech.com.cn,
>
> please do not top post / full quote.
>
> In message <FE7ADED5C2218B4786C09CD97DC4C49F9403F9@exchbj02.viatech.com.bj> you wrote:
>>
>> During debug u-boot with JTAG tools, maybe turning off optimizations was recommended.
>
> Many people recommend many things. Even strange or non-working or
> incorrect or dangerous ones.
A while back I tried this for the Linux kernel, with similiar results. I just
let it go without investigating further, guessing that maybe some tricks with
compiler directives were incompatible with turning off optimization.
But there's a good motivation for wanting to turn off optimization.
Single-stepping with a debugger at the C source level is almost useless. I've
since gotten better at single-stepping at the assembly level while using the
mixed c and assembly view of gdb.
Mike
next prev parent reply other threads:[~2013-07-01 18:03 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-25 16:49 [U-Boot] [PATCH 0/2] add support for LaCie CloudBox Frederic Leroy
2013-06-25 16:49 ` [U-Boot] [PATCH 1/2] arm: " Frederic Leroy
2013-06-25 18:24 ` Wolfgang Denk
2013-06-30 10:12 ` [U-Boot] [PATCH v2 0/4] " Frédéric Leroy
2013-06-30 10:12 ` [U-Boot] [PATCH v2 1/4] lacie_kw: sort #ifdef lists by CONFIG_ identifiers Frédéric Leroy
2013-06-30 22:15 ` Simon Guinot
2013-06-30 10:12 ` [U-Boot] [PATCH v2 2/4] arm: add support for LaCie CloudBox Frédéric Leroy
2013-06-30 10:12 ` [U-Boot] [PATCH v2 3/4] LaCie/common: Fix cloudbox ethernet leds Frédéric Leroy
2013-06-30 23:01 ` Simon Guinot
2013-07-01 9:51 ` [U-Boot] compiled failed when turned off gcc optimazition TigerLiu at viatech.com.cn
2013-07-01 10:03 ` Wolfgang Denk
2013-07-01 10:08 ` TigerLiu at viatech.com.cn
2013-07-01 11:37 ` Wolfgang Denk
2013-07-01 18:03 ` Mike Dunn [this message]
2013-07-01 19:51 ` Wolfgang Denk
2013-07-02 19:40 ` Mike Dunn
2013-07-02 22:38 ` Graeme Russ
2013-07-05 10:31 ` TigerLiu at viatech.com.cn
2013-07-05 14:00 ` [U-Boot] compiled failed when turned off gcc optimazitionAT Albert ARIBAUD
2013-06-30 10:12 ` [U-Boot] [PATCH v2 4/4] arm: add machine ID for CloudBox Frédéric Leroy
2013-06-30 22:53 ` Simon Guinot
2013-07-01 9:30 ` Frédéric Leroy
2013-07-01 10:01 ` Simon Guinot
2013-06-25 20:50 ` [U-Boot] [PATCH 1/2] arm: add support for LaCie CloudBox Simon Guinot
2013-06-25 21:09 ` Simon Guinot
2013-06-25 16:49 ` [U-Boot] [PATCH 2/2] LaCie/common: Fix cloudbox ethernet leds Frederic Leroy
2013-06-25 18:27 ` Wolfgang Denk
2013-06-25 21:08 ` Simon Guinot
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