[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
Fri Jul 7 14:19:47 UTC 2023


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

Comment (by Joel Sherrill):

 Maybe the FPU context isn't properly initialized for this CPU variant. The
 first context switch restore is handled special in _Thread_Handler. Easy
 enough to break there and see what is actually being restored. If it's
 wrong, then that's the culprit.

--
Ticket URL: <http://devel.rtems.org/ticket/4923#comment:5>
RTEMS Project <http://www.rtems.org/>
RTEMS Project


More information about the bugs mailing list