From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] examples/standalone: Remove relocation compile flags for PowerPC
Date: Fri, 10 Sep 2010 23:10:15 +0200 [thread overview]
Message-ID: <20100910211015.A35DB153798@gemini.denx.de> (raw)
In-Reply-To: <1284149249.26713.2926.camel@petert>
Dear Peter Tyser,
In message <1284149249.26713.2926.camel@petert> you wrote:
>
> > Sorry, I'm confused. What exactly do you want me to do? Since you
> > applied Peter's patch, the problem has gone away for me.
>
> However, I think there's still the issue that if there are multiple
> functions in a standalone application there's no guarantee the entry
> point function will be at the base of the image. eg if the app were:
That's my understanding as well.
> My last question on the issue was:
> It looks like the -fno-toplevel-reorder flag is only available in gcc >=
> 4.2 (http://gcc.gnu.org/gcc-4.2/changes.html released May 2007). So, do
> we add support to U-Boot to conditionally check for the gcc version like
> Linux to know when to use -fno-toplevel-reorder? Or do we use a linker
> script that would support more versions of gcc at the cost of more
> complexity?
>
> I never heard back about the preferred method. I'd personally lean
> towards checking for compiler version and using the gcc version check +
> -fno-toplevel-reorder.
Given the fact that GCC 4.2 is already pretty old I also tend to add a
gcc version check with -fno-toplevel-reorder instead of increasing the
complexity of the linker scripts.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
You can observe a lot just by watching. - Yogi Berra
next prev parent reply other threads:[~2010-09-10 21:10 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-15 3:25 [U-Boot] [PATCH] examples/standalone: Remove relocation compile flags for PowerPC Peter Tyser
2010-06-15 19:02 ` Timur Tabi
2010-06-15 19:05 ` Timur Tabi
2010-06-15 19:08 ` Peter Tyser
2010-06-15 19:20 ` Timur Tabi
2010-06-15 19:34 ` Peter Tyser
2010-06-15 19:36 ` Peter Tyser
2010-06-15 19:45 ` Timur Tabi
2010-06-15 20:15 ` Peter Tyser
2010-06-15 20:28 ` Wolfgang Denk
2010-06-15 20:39 ` Peter Tyser
2010-06-15 20:51 ` Wolfgang Denk
2010-06-16 3:37 ` Peter Tyser
2010-06-16 14:02 ` Timur Tabi
2010-06-16 14:51 ` Wolfgang Denk
2010-09-10 19:49 ` Wolfgang Denk
2010-09-10 19:53 ` Timur Tabi
2010-09-10 20:07 ` Peter Tyser
2010-09-10 21:10 ` Wolfgang Denk [this message]
2010-09-12 22:38 ` [U-Boot] [PATCH] examples/standalone: Use gcc's -fno-toplevel-reorder Peter Tyser
2010-09-13 2:00 ` Andrew Dyer
2010-09-13 4:48 ` Peter Tyser
2010-09-16 11:49 ` Detlev Zundel
2010-10-12 20:47 ` Wolfgang Denk
2010-06-15 20:39 ` [U-Boot] [PATCH] examples/standalone: Remove relocation compile flags for PowerPC Timur Tabi
2010-06-15 20:54 ` Wolfgang Denk
2010-06-15 21:03 ` Timur Tabi
2010-06-15 22:56 ` Wolfgang Denk
2010-06-15 19:48 ` Wolfgang Denk
2010-06-29 20:29 ` Wolfgang Denk
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