Enum aarch64::regs::TCR_EL1::TBI1::Value

#[repr(u64)]
pub enum Value {
    Used = 0,
    Ignored = 1,
}

Top Byte ignored - indicates whether the top byte of an address is used for address match for the TTBR1_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 TTBR1_EL1. It has an effect whether the EL1&0 translation regime is enabled or not.

If ARMv8.3-PAuth is implemented and TCR_EL1.TBID1 is 1, then this field only applies to Data accesses. Otherwise, if the value of TBI1 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 = 0

Ignored = 1

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl PartialEq for Value

fn eq(&self, other: &Value) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFromValue<u64> for Value

type EnumType = Value

fn try_from_value(v: u64) -> Option<<Value as TryFromValue<u64>>::EnumType>

impl Copy for Value

impl Eq for Value

impl StructuralPartialEq for Value