Enum gimli::read::RegisterRule
source · pub enum RegisterRule<R: Reader> {
Undefined,
SameValue,
Offset(i64),
ValOffset(i64),
Register(Register),
Expression(Expression<R>),
ValExpression(Expression<R>),
Architectural,
}Expand description
An entry in the abstract CFI table that describes how to find the value of a register.
“The register columns contain rules that describe whether a given register has been saved and the rule to find the value for the register in the previous frame.”
Variants
Undefined
A register that has this rule has no recoverable value in the previous frame. (By convention, it is not preserved by a callee.)
SameValue
This register has not been modified from the previous frame. (By convention, it is preserved by the callee, but the callee has not modified it.)
Offset(i64)
“The previous value of this register is saved at the address CFA+N where CFA is the current CFA value and N is a signed offset.”
ValOffset(i64)
“The previous value of this register is the value CFA+N where CFA is the current CFA value and N is a signed offset.”
Register(Register)
“The previous value of this register is stored in another register numbered R.”
Expression(Expression<R>)
“The previous value of this register is located at the address produced by executing the DWARF expression.”
ValExpression(Expression<R>)
“The previous value of this register is the value produced by executing the DWARF expression.”
Architectural
“The rule is defined externally to this specification by the augmenter.”
Trait Implementations
sourceimpl<R: Clone + Reader> Clone for RegisterRule<R>
impl<R: Clone + Reader> Clone for RegisterRule<R>
sourcefn clone(&self) -> RegisterRule<R>
fn clone(&self) -> RegisterRule<R>
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moresourceimpl<R: Debug + Reader> Debug for RegisterRule<R>
impl<R: Debug + Reader> Debug for RegisterRule<R>
sourceimpl<R: PartialEq + Reader> PartialEq<RegisterRule<R>> for RegisterRule<R>
impl<R: PartialEq + Reader> PartialEq<RegisterRule<R>> for RegisterRule<R>
sourcefn eq(&self, other: &RegisterRule<R>) -> bool
fn eq(&self, other: &RegisterRule<R>) -> bool
impl<R: Eq + Reader> Eq for RegisterRule<R>
impl<R: Reader> StructuralEq for RegisterRule<R>
impl<R: Reader> StructuralPartialEq for RegisterRule<R>
Auto Trait Implementations
impl<R> RefUnwindSafe for RegisterRule<R>where
R: RefUnwindSafe,
impl<R> Send for RegisterRule<R>where
R: Send,
impl<R> Sync for RegisterRule<R>where
R: Sync,
impl<R> Unpin for RegisterRule<R>where
R: Unpin,
impl<R> UnwindSafe for RegisterRule<R>where
R: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
sourceimpl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
sourcefn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key and return true if they are equal.