Struct BitfieldDescriptor 

pub struct BitfieldDescriptor {
    pub name: String,
    pub offset: u32,
    pub width: u32,
}

A descriptor for a bit-field: its name, offset and width within a word.

Fields

name: String

Name of the bit-field.

offset: u32

Bit offset within the containing word.

width: u32

Width in bits.

Implementations

impl BitfieldDescriptor

pub fn new(name: impl Into<String>, offset: u32, width: u32) -> Self

Create a new BitfieldDescriptor.

pub fn mask(&self) -> u64

The bitmask for this field (within a 64-bit word).

pub fn extract(&self, word: u64) -> u64

Extract this field’s value from a word.

pub fn insert(&self, word: u64, value: u64) -> u64

Insert value into word for this field.

pub fn fits_in(&self, word_bits: u32) -> bool

Check that this field fits within a word of word_bits bits.