[En-Nut-Discussion] Using the FPU on Cortex-M4

Uwe Bonnes bon at elektron.ikp.physik.tu-darmstadt.de
Fri Oct 24 11:03:48 CEST 2014

>>>>> "Philipp" == Philipp Burch <phip at hb9etc.ch> writes:

    Philipp> Hi everyone, as noted earlier, I'm currently porting Nut/OS to
    Philipp> the TIVA TM4C architecture (see branches/devnut_tiva). It works
    Philipp> well so far, as I can take a lot of code from the LM3S
    Philipp> branch. Right now, the operating system itself, the GPIO API
    Philipp> and the UART devices are working.

    Philipp> Can anyone tell me what to do with this?

Getting the use the FPU is hard. There are issues with fp register save on
context switch. Did you compiled th library also with -mfloat-abi=hard?

Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
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