[RTEMS Project] #4923: FPU context init/switch not working well on more than 2 tasks on Cortex-Mx/ARMv7-M platform

RTEMS trac trac at rtems.org
Thu Jul 13 13:23:33 UTC 2023


#4923: FPU context init/switch not working well on more than 2 tasks on Cortex-
Mx/ARMv7-M platform
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 Reporter:  kgardas   |       Owner:  (none)
     Type:  defect    |      Status:  new
 Priority:  normal    |   Milestone:
Component:  arch/arm  |     Version:
 Severity:  major     |  Resolution:
 Keywords:            |  Blocked By:
 Blocking:            |
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Comment (by Sebastian Huber):

 The FPU context corruption happens in _ARMV7M_Pendable_service_call().
 Somehow the FPU context is not restored from the right frame position in
 certain cases. It is not clear, why this error doesn't show up in the
 spcontext01 test.

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Ticket URL: <http://devel.rtems.org/ticket/4923#comment:9>
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