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[Qemu-devel] Re: [PATCH][SPARC] FPU deferred trap-queue


From: Aurelien Jarno
Subject: [Qemu-devel] Re: [PATCH][SPARC] FPU deferred trap-queue
Date: Thu, 5 Apr 2007 19:43:35 +0200
User-agent: Mutt/1.5.13 (2006-08-11)

On Tue, Apr 03, 2007 at 02:12:14AM +0200, Aurelien Jarno wrote:
> Hi,
> 
> The current emulated SPARC FPU does not support deferred trap-queue. In
> such cases the STDFQ instruction should generate an fp_exception trap
> with the FTT field to sequence_error instead of the current
> illegal_instruction trap.
> 
> The attached patch fixes that. It also ensures that the qne bit of the
> FSR register is always zero, ie that there is no deferred trap-queue
> pending.
> 

I have just remarked that my patch breaks the user mode. Please find
attached a new one to fix this problem.

Bye,
Aurelien

-- 
  .''`.  Aurelien Jarno             | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
 `. `'   address@hidden         | address@hidden
   `-    people.debian.org/~aurel32 | www.aurel32.net

Attachment: sparc-qemu-stdfq.diff
Description: Text Data


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