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Terminator

Enum Terminator 

Source
pub enum Terminator {
    Fallthrough,
    UnconditionalBranch {
        target: VAddr,
    },
    ConditionalBranch {
        taken: VAddr,
        fallthrough: VAddr,
    },
    Return,
    IndirectBranch,
    InvalidOrUnreachable,
}
Expand description

How control flow leaves a basic block.

Calls are deliberately not terminators: the standard CFG convention treats a call as a regular instruction whose semantics include transferring control elsewhere and eventually returning.

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Fallthrough

Reached only at the very end of a function whose body simply ran out of recorded bytes (e.g. nops for alignment with no branch back). Rare in real code but possible.

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UnconditionalBranch

Unconditional direct branch (jmp rel32, etc.) to a known target.

Fields

§target: VAddr
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ConditionalBranch

Conditional direct branch (jcc); has both a taken target and a fall-through edge to the next address.

Fields

§taken: VAddr
§fallthrough: VAddr
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Return

Return from function (ret, iret, etc.).

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IndirectBranch

Indirect branch or call where the target is not a constant (jmp rax, jmp [rip+...], call rax). Static analysis can’t resolve these; downstream passes may attempt jump-table recovery.

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InvalidOrUnreachable

ud2, int3 reaching here as a terminator, or any other instruction that surfaces as flow-control “exception” / “interrupt” / “unreachable”.

Trait Implementations§

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impl Clone for Terminator

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fn clone(&self) -> Terminator

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for Terminator

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for Terminator

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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 Eq for Terminator

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impl StructuralPartialEq for Terminator

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.