[RTEMS Project] #2270: SPARC: Optimized floating-point context handling

RTEMS trac trac at rtems.org
Mon Mar 2 12:13:37 UTC 2015

#2270: SPARC: Optimized floating-point context handling
 Reporter:  sebastian.huber  |       Owner:  sebastian.huber
     Type:  enhancement      |      Status:  accepted
 Priority:  normal           |   Milestone:  4.11.1
Component:  cpukit           |     Version:  4.11
 Severity:  normal           |  Resolution:
 Keywords:  SPARC            |

Comment (by sebastian.huber):

 Are the FPU instructions really that slow?  I would disable the PSR.EF in
 the _ISR_Handler at

         or       %g5, SPARC_PSR_PIL_MASK, %g5
         wr       %g5, SPARC_PSR_ET_MASK, %psr ! **** ENABLE TRAPS ****

 So why not enable traps and disable EF in one step?

Ticket URL: <http://devel.rtems.org/ticket/2270#comment:13>
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