Message-ID: <4410EC0D.3090303@kenati.com>
Date: Thu, 09 Mar 2006 19:01:33 -0800
From: Carlos Munoz <carlos@kenati.com>
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To: Lee Revell <rlrevell@joe-job.com>
CC: Valdis.Kletnieks@vt.edu, linux-kernel@vger.kernel.org
Subject: Re: How can I link the kernel with libgcc ?
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Lee Revell wrote:

>On Thu, 2006-03-09 at 20:45 -0500, Valdis.Kletnieks@vt.edu wrote:
>  
>
>>On Thu, 09 Mar 2006 17:44:16 PST, Carlos Munoz said:
>>    
>>
>>>I'm writing an audio driver and the hardware requires floating point 
>>>arithmetic.  When I build the kernel I get the following errors at link 
>>>time:
>>>      
>>>
>>Tough break, that.  You sure you can't figure a way to either push the
>>floating point out to userspace
>>    
>>
>
>Audio drivers should never have to directly manipulate the samples -
>they just manage the DMA buffers and interrupts and wake up the process
>at the right time.  Mixing, routing, volume control, DSP go in
>userspace.
>
>Lee
>
>  
>
Hi Lee,

Unfortunately, the driver needs to populate several coefficient tables 
for the hardware to perform silence suppression and other advance 
features. The values for these tables are calculated using log10 
operations. I don't  see a clean way to push these operations to user 
space without the need for custom applications that build the tables and 
pass them to the driver.

Thanks,


Carlos Munoz
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