Enum aarch64::regs::CPACR_EL1::FPEN::Value

#[repr(u64)]
pub enum Value {
    TrapEl0El1 = 0,
    TrapEl0 = 1,
    TrapEl1El0 = 2,
    TrapNothing = 3,
}

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 = 0

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

TrapEl0 = 1

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

TrapEl1El0 = 2

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

TrapNothing = 3

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 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