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Altera_Forum's avatar
Altera_Forum
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14 years ago

Using FPU with uCLinux

Hello folks, i'am just trying to use the floating-point-unit within my uCLinux dist. I have added the corresponding custom instruction to the cpu within my sopc-builder system. After that i co...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

No, as you can see, it's just that that printout is hardcoded.

The config option controls a compiler flag. The kernel doesn't really know whether there is an FPU.

You'll also need to add the compiler flag to your applications.

See: http://www.alterawiki.com/wiki/single-precision_-mcustom-*_options

http://www.alterawiki.com/wiki/custom_instructions

Also, the option is there for the kernel just in case, but the kernel doesn't really use any floating point. You can build the kernel without that option and still use the custom instructions in your applications.