[RTEMS Project] #2363: SPARC: Silent FP context corruption possible

RTEMS trac trac at rtems.org
Tue Jun 9 07:40:10 UTC 2015


#2363: SPARC: Silent FP context corruption possible
-----------------------------+--------------------
 Reporter:  sebastian.huber  |      Owner:
     Type:  defect           |     Status:  new
 Priority:  lowest           |  Milestone:  4.11.1
Component:  cpukit           |    Version:  4.11
 Severity:  critical         |   Keywords:
-----------------------------+--------------------
 On uni-processor configurations the post-switch actions (e.g. signal
 handlers) and context switch extensions may silently corrupt the floating
 point context.  Set test sptests/spcontext01.

 This problem exists for many years and might be working as intended.  It
 is possible to fix this issue using the SPARC_USE_SAFE_FP_SUPPORT option.
 This is already used for the SMP configurations.  The disadavantage is
 that this disables the deferred floating point support.

--
Ticket URL: <http://devel.rtems.org/ticket/2363>
RTEMS Project <http://www.rtems.org/>
RTEMS Project


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