llvm dev - May 2009 - [LLVMdev] [PATCH] Add support for accessing the FS segment register on X86

Hi,

  The attached patch adds support for accessing the FS segment register
using address space 255, similarly to the way the GS segment register can be
accessed. This is useful for generating TLS access code on amd64 for
example.

              Zoltan
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Maybe 257 would be better (or other unused), because of r70197, which  
gives special behavior for <256

Shantonu Sen
ssen at apple.com

Sent from my Mac Pro

On May 4, 2009, at 2:28 PM, Zoltan Varga wrote:
> Hi,
>
>   The attached patch adds support for accessing the FS segment  
> register using address space 255, similarly to the way the GS  
> segment register can be accessed. This is useful for generating TLS  
> access code on amd64 for example.
>
>               Zoltan
>
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Hi,

  Here is an updated version of the patch using address space 257.

                Zoltan

On Mon, May 4, 2009 at 11:36 PM, Shantonu Sen <ssen at apple.com> wrote:
> Maybe 257 would be better (or other unused), because of r70197, which gives
> special behavior for <256
>
> Shantonu Sen
> ssen at apple.com
>
> Sent from my Mac Pro
>
>
> On May 4, 2009, at 2:28 PM, Zoltan Varga wrote:
>
>  Hi,
>>
>>  The attached patch adds support for accessing the FS segment register
>> using address space 255, similarly to the way the GS segment register
can be
>> accessed. This is useful for generating TLS access code on amd64 for
>> example.
>>
>>              Zoltan
>>
>>
> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>
>
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
>
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