Enum cortex_a::registers::CPACR_EL1::FPEN::Value

#[repr(u64)]
pub enum Value {
    TrapEl0El1,
    TrapEl0,
    TrapEl1El0,
    TrapNothing,
}

Traps execution at EL0 and EL1 of instructions that access the Advanced SIMD and floating-point registers from both Execution states to EL1, reported using ESR_ELx.EC value 0x07, or to EL2 reported using ESR_ELx.EC value 0x00 when EL2 is implemented and enabled in the current Security state and HCR_EL2.TGE is 1, as follows:

• In AArch64 state, accesses to FPCR, FPSR, any of the SIMD and floating-point registers V0-V31, including their views as D0-31 registers or S0-31 registers.

• In AArch32 state, FPSCR, and any of the SIMD and floating-point registers Q0-15, including their views as D0-31 registers or S0-31 registers.

Traps execution at EL1 and EL0 of SVE instructions to EL1, or to EL2 when El2 is implemented and enabled for the current Security state and HCR_EL2.TGE is 1. The exception is reported using ESR_ELx.EC value 0x07.

A trap taken as a result of [CPACR_EL1::ZEN] has precendence over a trap taken as a result of [CPACR_EL1::FPEN].

On a Warm reset, this fields resets to an undefined value.

Variants

TrapEl0El1

This control causes execution of these instructions at EL0 and EL1 to be trapped.

TrapEl0

This control causes execution of these instructions at EL0 to be trapped, but does not cause any instructions at EL1 to be trapped.

TrapEl1El0

This control causes execution of these instructions at EL1 and EL0 to be trapped.

TrapNothing

This control does not cause execution of any instructions to be trapped.

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 From<Value> for FieldValue<u64, Register>

fn from(v: Value) -> Self

Converts to this type from the input type.

impl PartialEq<Value> 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<Self::EnumType>

impl Copy for Value

impl Eq for Value

impl StructuralEq for Value

impl StructuralPartialEq for Value