[−][src]Enum cortex_a::regs::TCR_EL1::TBI0::Value

#[repr(u64)]pub enum Value {
    Used,
    Ignored,
}

Top Byte ignored - indicates whether the top byte of an address is used for address match for the TTBR0_EL1 region, or ignored and used for tagged addresses. Defined values are:

0 Top Byte used in the address calculation. 1 Top Byte ignored in the address calculation.

This affects addresses generated in EL0 and EL1 using AArch64 where the address would be translated by tables pointed to by TTBR0_EL1. It has an effect whether the EL1&0 translation regime is enabled or not.

If ARMv8.3-PAuth is implemented and TCR_EL1.TBID0 is 1, then this field only applies to Data accesses. Otherwise, if the value of TBI0 is 1 and bit [55] of the target address to be stored to the PC is 0, then bits[63:56] of that target address are also set to 0 before the address is stored in the PC, in the following cases:

• A branch or procedure return within EL0 or EL1. • An exception taken to EL1. • An exception return to EL0 or EL1.

Variants

Used
Ignored

Trait Implementations

impl TryFromValue<u64> for Value[src]

type EnumType = Value

Auto Trait Implementations

impl Send for Value[src]

impl Sync for Value[src]

impl Unpin for Value[src]

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.