liblisa::encoding::dataflows

Struct MemoryAccess

pub struct MemoryAccess<A: Arch> {
    pub kind: AccessKind,
    pub inputs: Inputs<A>,
    pub size: Range<u64>,
    pub calculation: AddressComputation,
    pub alignment: usize,
}
Expand description

A memory access.

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§kind: AccessKind

The type of access that is performed.

§inputs: Inputs<A>

The inputs for calculation.

§size: Range<u64>

The determined size range of the access. The lower bound is the largest number of bytes that could be observed as being acesssed. The upper bound is set to one below the smallest byte index for which we could observe that it was not accessed.

§calculation: AddressComputation

A simple expression for the calculation of the address of the form i1 + i2 + .. + i_k * c + i_k+1 + i_k+1 .. i_n + c. That is, all inputs are summed, one input can be multiplied by a certain factor, which is then offset by a constant value c. This allows for the computation of most common addresses. It speeds up enumeration by ~20% on average up to ~40% in extreme cases. Obviously the speedup gets bigger if the amount of memory accesses increases or if the number of randomize_new() and adapt() calls is greater.

§alignment: usize

An alignment of 1 means that every address is OK. An alignment of 2 means that only addresses of the form 2n are ok. An alignment of 4 means that addresses of the form 4n are OK. Etc. NOTE: Only powers of 2 are acceptable values. Any other value will produce unspecified behavior.

Implementations§

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impl<A: Arch> MemoryAccess<A>

pub fn inputs(&self) -> &Inputs<A>

The inputs of the address calculation.

pub fn compute_address(&self, state: &SystemState<A>) -> Addr

Computes the address that this memory access will access, given the provided CPU state.

pub fn has_fixed_addr(&self) -> bool

Returns true if the memory address is fixed or only dependent on immediate values in the instruction.

pub fn compute_fixed_addr(&self) -> Addr

Computes the fixed address for this access. Only returns a valid value if Self::has_fixed_addr returns true.

Trait Implementations§

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impl<A: Clone + Arch> Clone for MemoryAccess<A>

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fn clone(&self) -> MemoryAccess<A>

Returns a copy 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<A: Arch> Debug for MemoryAccess<A>

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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<'de, A: Arch> Deserialize<'de> for MemoryAccess<A>

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl<A: Arch> Display for MemoryAccess<A>

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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<A: Hash + Arch> Hash for MemoryAccess<A>

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<A> JsonSchema for MemoryAccess<A>
where A: JsonSchema + Arch, A::Reg: JsonSchema,

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fn schema_name() -> String

The name of the generated JSON Schema. Read more
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fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type. Read more
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fn json_schema(gen: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type. Read more
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fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword. Read more
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impl<A: PartialEq + Arch> PartialEq for MemoryAccess<A>

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fn eq(&self, other: &MemoryAccess<A>) -> 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<A: Arch> Serialize for MemoryAccess<A>

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl<A: Eq + Arch> Eq for MemoryAccess<A>

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impl<A: Arch> StructuralPartialEq for MemoryAccess<A>

Auto Trait Implementations§

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impl<A> Freeze for MemoryAccess<A>

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impl<A> RefUnwindSafe for MemoryAccess<A>
where <A as Arch>::Reg: RefUnwindSafe,

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impl<A> Send for MemoryAccess<A>

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impl<A> Sync for MemoryAccess<A>

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impl<A> Unpin for MemoryAccess<A>
where <A as Arch>::Reg: Unpin,

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impl<A> UnwindSafe for MemoryAccess<A>
where <A as Arch>::Reg: UnwindSafe,

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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, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. 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, W> HasTypeWitness<W> for T
where W: MakeTypeWitness<Arg = T>, T: ?Sized,

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const WITNESS: W = W::MAKE

A constant of the type witness
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impl<T> Identity for T
where T: ?Sized,

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const TYPE_EQ: TypeEq<T, <T as Identity>::Type> = TypeEq::NEW

Proof that Self is the same type as Self::Type, provides methods for casting between Self and Self::Type.
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type Type = T

The same type as Self, used to emulate type equality bounds (T == U) with associated type equality constraints (T: Identity<Type = U>).
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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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> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. 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.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,