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SFrameFlexControlData

Struct SFrameFlexControlData 

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pub struct SFrameFlexControlData { /* private fields */ }
Expand description

Flex FDE Control Data Word

For flexible FDE types (SFRAME_FDE_TYPE_FLEX), the variable-length bytes trailing an SFrame FRE are interpreted as pairs of Control Data and Offset Data for each tracked entity (CFA, RA, FP).

Ref: https://sourceware.org/binutils/docs-2.46/sframe-spec.html#Flexible-FDE-Type-Interpretation

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impl SFrameFlexControlData

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pub fn new(value: i32) -> Self

Create a new Control Data from raw value

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pub fn is_padding(&self) -> bool

Check if this is a padding data word (value is 0)

A value of 0 indicates that no further data words follow for the tracked entity, meaning the fixed offsets apply or the entity is absent.

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pub fn reg_p(&self) -> bool

Register-based Location Rule

If true, the base is a DWARF register (encoded in regnum bits). If false, the base is the CFA (used for RA/FP recovery).

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pub fn deref_p(&self) -> bool

Dereference Flag

If true, the location of the value is the address (Base + Offset): value = *(Base + Offset) If false, the value is (Base + Offset).

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pub fn regnum(&self) -> i32

DWARF register number used as the base

Effective only if reg_p is true.

Trait Implementations§

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impl Clone for SFrameFlexControlData

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fn clone(&self) -> SFrameFlexControlData

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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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 Copy for SFrameFlexControlData

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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.