SPARC Floating Point Support Changes

Sebastian Huber sebastian.huber at
Fri May 8 06:48:23 UTC 2015


we work currently on an optimization for the SPARC floating point 
support.  See also:

We implement alternative (1). The floating point status register (FSR) 
is volatile according to the SPARC ABI.

We are not sure if this is honoured in the RTEMS applications in 
general. Are there known uses cases which treat the FSR in a thread 
specific non-volatile way? It would be beneficial to rely on a volatile 
only usage since this would lead to a much simpler floating point 
context save/restore code.

Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone   : +49 89 189 47 41-16
Fax     : +49 89 189 47 41-09
E-Mail  : sebastian.huber at
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