cranelift_codegen::isa::x64::encoding::rex

Enum LegacyPrefixes

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pub enum LegacyPrefixes {
    None,
    _66,
    _F0,
    _66F0,
    _F2,
    _F3,
    _66F3,
}
Available on crate feature x86 only.
Expand description

We may need to include one or more legacy prefix bytes before the REX prefix. This enum covers only the small set of possibilities that we actually need.

Variants§

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None

No prefix bytes.

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_66

Operand Size Override – here, denoting “16-bit operation”.

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_F0

The Lock prefix.

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_66F0

Operand size override and Lock.

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_F2

REPNE, but no specific meaning here – is just an opcode extension.

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_F3

REP/REPE, but no specific meaning here – is just an opcode extension.

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_66F3

Operand size override and same effect as F3.

Trait Implementations§

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impl Default for LegacyPrefixes

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl PartialEq for LegacyPrefixes

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for LegacyPrefixes

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.