RTEMS | microblaze: enhance exception diagnostics (!841)

[Kinsey Moore (@opticron)]

Kinsey Moore started a new discussion on cpukit/score/cpu/microblaze/cpu.c: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/841#note_136309

 > +
 > +  /* See ug984-vivado-microblaze-ref Exception Status Register (ESR) */
 > +  _CPU_esr_ec_code esr_ec_codes[] = {
 > +  {0, "Stream Exception"},
 > +  {1, "Unaligned data access exception"},
 > +  {2,"Illegal op-code exception"},
 > +  {3, "Instruction bus error exception"},
 > +  {4, "Data bus error exception"},
 > +  {5, "Divide exception"},
 > +  {6,"Floating point unit exception"},
 > +  {7, "Privileged instruction or Stack protection violation exception"}, /* Xilinx docs have 2 errors for this id */
 > +  {16,"Data storage exception"},
 > +  {17,"Instruction storage exception"},
 > +  {18,"Data TLB miss exception"},
 > +  {19,"Instruction TLB miss exception"}
 > +  };

I would recommend pulling these definitions out of the function and applying the formatting suggestions from the pipeline.

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/841#note_136309
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