[RTEMS Project] #4712: powerpc: Add AltiVec VRSAVE support

[RTEMS trac]

#4712: powerpc: Add AltiVec VRSAVE support
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  Reporter:  Sebastian Huber  |      Owner:  Sebastian Huber
      Type:  enhancement      |     Status:  assigned
  Priority:  normal           |  Milestone:  6.1
 Component:  arch/powerpc     |    Version:  6
  Severity:  normal           |   Keywords:
Blocked By:                   |   Blocking:
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 The VRSAVE feature of the Altivec unit can be used to reduce the amount of
 Altivec registers which need to be saved/restored during interrupt
 processing and context switches.

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Ticket URL: <http://devel.rtems.org/ticket/4712>
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