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    • Differences between the 3 options for floating point ABI?

    Posted by Gryo on 2016-10-31 11:59

    What are the differences between them?
    Also why some of the headers coming with the firmware pack of the stm32 serie i use require soft instead of hard?

    thanks in advance.

    Reads: 8388
    Posted by rbeal on 2016-11-01 11:46

    Hi,

    I have an STM32L4 and i use softfp on linux and hard on windows.
    On Linux, i have just not compiled gcc to works with hard.

    Soft don't works.

    I think theses parameters are to use better the chip. Some chip can use hardware to calculate float.
    I don't know why it not works with soft for me...

    rbeal


         Posted by kfishy on 2016-11-02 02:28
    i believe one is completely software fp, the other redirects soft fp abi code to use the FPU, while the third generates pure floating point code without calling abi functions.