On 8/31/2015 5:47 AM, Cudmore, Alan P. (GSFC-5820) wrote:
Having a floating point configuration of the BSP makes sense. I was able
to rebuild the BSP with the hardware floating point compiler option and it
works.
I did get a floating point exception in the FTP task and had to change the
FTP task create to enable floating point. Is it worth submitting a patch
to change that?
What did it use the FPU for? Is this a case where GCC emits FPU instructions
just to move data or calculate array indices?
On some CPUs, when hard FP is turned on, GCC assumes the FPU can be used
for some non-intuitive things and it is safer to implicitly make all tasks
FP rather than letting people trip over implicit uses of the FPU.
--joel
Thanks,
Alan
On 8/31/15, 2:40 AM, "Sebastian Huber"
<sebastian.hu...@embedded-brains.de> wrote:
Hello Alan,
I am not sure how Gaisler manages this in their RCC, but I think for
standard RTEMS we need additional BSPs (e.g. via leon3_fp.cfg and
ngmp_fp.cfg configuration files).
On 17/08/15 17:29, Cudmore, Alan P. (GSFC-5820) wrote:
Hi,
We are currently trying to use the leon3 BSP for RTEMS 4.11.
We have used the 4.10 RCC/Gaisler tools with the Driver Manager in the
past, but we would like to be on 4.11 for the SMP support.
When I build the 4.11 leon3 BSP, I seem to only have soft-float
support. When I try to build with the ‹enable-multilib configure
switch, the build fails. Before I start trying to determine the cause
of the compile failure, I wanted to make sure I am enabling floating
point support for the LEON3 correctly.
Thanks,
Alan
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