Function sbi_rt::get_spec_version

pub fn get_spec_version() -> Version

Return the current SBI specification version.

The minor number of the SBI specification is encoded in the low 24 bits, with the major number encoded in the next 7 bits. Bit 31 must be zero and is reserved for future expansion.

This function is defined in RISC-V SBI Specification chapter 4.1. According to the introduction of chapter 4, all base extension functions must success and return no error code.