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Subject: Re: Using gcc 4.4.0 to compile Rockbox

Re: Using gcc 4.4.0 to compile Rockbox

From: Mark Allums <mark_at_allums.com>
Date: Tue, 24 Feb 2009 04:18:08 -0600

Daniel Stenberg wrote:
> On Tue, 24 Feb 2009, Mark Allums wrote:
>
>> o It crashes trying to play .mp3 with the error message "Undefined
>> instruction at 40018920 (0)"
>> o It crashes trying to play .wma with a similar error message.
>
> My suggested approach:
>
> Use the .map files to track down exactly what function that dies (and
> then you can objdump them to find the exact instruction). Then re-run
> gcc to do assembly output (using -S -fverbose-asm perhaps) for the files
> with both the old and the new gcc and compare the outputs. Hopefully
> that can offer some clues.

I will probably need some coaching here, as I am less experienced than I
should be with the debugging side of things.

However, I'm game.

Mark A.
Received on 2009-02-24


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