Re: [PATCH] Use descriptor's functions instead of inline assembly

Frederik Deweerdt wrote:
> On Fri, Jul 20, 2007 at 10:56:01AM -0300, Glauber de Oliveira Costa wrote:
>> This patch provides a new set of functions for managing the descriptor
>> tables that can be used instead of putting the raw assembly in .c files.
>>     
>> Signed-off-by: Glauber de Oliveira Costa <[email protected]>
>>
>> -	asm volatile ("str %0"  : "=m" (ctxt->tr));
>> +	store_gdt((struct desc_ptr *)&ctxt->gdt_limit);
>> +	store_idt((struct desc_ptr *)&ctxt->idt_limit);
>> +	ctxt->tr = store_tr();
>>  
> Would'nt a store_tr(&ctxt->tr) be more homogeneous here?

Not really.  The task register is a segment number (a simple integer),
while the sidt/sgdt instructions write the cached descriptor to memory.

--
				Brian Gerst
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• References:
  • [PATCH] Use descriptor's functions instead of inline assembly
    • From: Glauber de Oliveira Costa <[email protected]>
  • Re: [PATCH] Use descriptor's functions instead of inline assembly
    • From: Frederik Deweerdt <[email protected]>

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