Can't find spi/i2c HAL's API in handbook

Hello,

I am new with NIOS II.
For now, I first try to verify that we have the required APIs.
But searching for spi/i2c APIs in hal reference in "NIOS II Software development handbook", I did not find any mention of it.

Does spi/i2c supported in HAL ? if yes - why I can't find it in the HAL reference.

Thanks,
Ran