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Message
From: Matjaz Breskvar <phoenix@o...>
Date: Sat, 31 May 2003 14:36:24 +0200
Subject: Re: FW: [openrisc] GCC problem
* Raymond Chow (rchow@n...) wrote:
>
> Thank you for your suggestion to use gcc-3.2.3. It helped, and my problem
> was
> solved but only in non-optimized mode (O0). With any optimization (levels 1,
> 2
> or 3) turned on, system crashes and SP, FP, LR and PC registers get
> corrupted.
> Debugging and analyzing the assembly code for non-optimized and optimized
> version
> of the API where system usually crashes, I noticed that the difference is
> how extensively
> FP register is used for stack store/load operations when optimization is
> turned off, and is
> not used at all when optimization is on. I wonder why is this big difference
> how FP is
> used, and is there a some compiler option that can be used to fix this
> problem?
it would be helpful if you would provide some more detailed information on
your setup, what are you trying to achieve and if possible a simple testcase.
m.
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