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https://issues.apache.org/jira/browse/MYNEWT-581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marko Kiiskila resolved MYNEWT-581.
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Resolution: Fixed
Now checked in.
To enable; set syscfg variable HARDFLOAT=1.
Also, bsp's pkg.yml needs to set additional cflags based on this syscfg.
> support hw floating point with cortex-m4
> ----------------------------------------
>
> Key: MYNEWT-581
> URL: https://issues.apache.org/jira/browse/MYNEWT-581
> Project: Mynewt
> Issue Type: Improvement
> Reporter: Marko Kiiskila
> Assignee: Marko Kiiskila
> Fix For: v1_0_0_rel
>
>
> Add a syscfg knob for this; hw floating point computations are faster, but
> enabling FPU eats more power/stack space.
> During context switching, swap in/out floating point registers.
> Pass appropriate parameters to compiler to enable floating point instruction
> generation.
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