Crash under sparc/rtems-4.11 when compiling with FPU

[Sebastian Huber]

Hello,

since this issue pops up every now and then we should eventually fix it. 
My approach would be to add the following BSP variants:

leon2fp (is the LEON2 still relevant?)
leon3fp

Which compiler flags should we use? We have the following multi-libs 
available:

-mcpu=leon3
-mcpu=leon3v7
-mcpu=leon
-mcpu=leon -mfix-ut699
-mcpu=leon -mfix-at697f

I guess the compiler issue with respect to spurious FP instruction 
generation is fixed:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=18900

However, this should be checked by manual inspection of the 
librtemsbsp.a and librtemscpu.a for each new compiler version.

-- 
Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
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E-Mail  : sebastian.huber at embedded-brains.de
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