[fpc-devel] What is the best match for for -mfpu=fpv4-sp-d16 on fpc-arm?
mail at michael-ring.org
Sat Apr 11 22:13:50 CEST 2020
I found this reference manual for floating point instructions:
and this high level overview:
What is funny is that I did not find FPV4_S16 in the link above, only
*VFPv4-D32,**VFPv4-D16 and ***VFPv4U**
I only find |vfpv4|, |vfpv4-d16|, |fpv4-sp-d16| so no idea what FPV4_S16
Am 11.04.20 um 21:42 schrieb Florian Klaempfl:
> Am 11.04.2020 um 21:03 schrieb Michael Ring via fpc-devel:
>> I have now set up new target freertos-arm and want to start playing
>> arround with freertos.
>> I have compiled freertos with STM32CubeIDE, only 'problem' is that I
>> need to compile with floting point enabled, with Soft-Float the build
>> For STM32F401RE Chip the C-compiler selects
>> -mfpu=fpv4-sp-d16 -mfloat-abi=hard
>> but Freepascal doex not seem to support exactly this abi, I see:
>> Which setting should I use? VFPV3_D16 or something else?
> Let's just add it. What properties does it have? Do you have know some
> reference by heard?
> fpc-devel maillist - fpc-devel at lists.freepascal.org
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