[RTEMS Project] #4949: dl05 fails on MicroBlaze

[RTEMS trac]

#4949: dl05 fails on MicroBlaze
-------------------------+--------------------
  Reporter:  Alex White  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  normal      |  Milestone:  7.1
 Component:  tool/gcc    |    Version:  6
  Severity:  normal      |   Keywords:
Blocked By:              |   Blocking:
-------------------------+--------------------
 Test `dl05` fails on MicroBlaze due to this GCC bug:
 [https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61664].

 In the epilogue of `_Unwind_RaiseException`, the return address is 4 bytes
 off from the correct landing pad. If I use gdb to subtract 4 from `r15` in
 the epilogue, the test passes.

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Ticket URL: <http://devel.rtems.org/ticket/4949>
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