Struct wasmtime_environ::wasmparser::MemArg

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pub struct MemArg {
    pub align: u8,
    pub max_align: u8,
    pub offset: u64,
    pub memory: u32,
}
Expand description

Represents a memory immediate in a WebAssembly memory instruction.

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§align: u8

Alignment, stored as n where the actual alignment is 2^n

§max_align: u8

Maximum alignment, stored as n where the actual alignment is 2^n.

Note that this field is not actually read from the binary format, it will be a constant depending on which instruction this MemArg is a payload for.

§offset: u64

A fixed byte-offset that this memory immediate specifies.

Note that the memory64 proposal can specify a full 64-bit byte offset while otherwise only 32-bit offsets are allowed. Once validated memory immediates for 32-bit memories are guaranteed to be at most u32::MAX whereas 64-bit memories can use the full 64-bits.

§memory: u32

The index of the memory this immediate points to.

Note that this points within the module’s own memory index space, and is always zero unless the multi-memory proposal of WebAssembly is enabled.

Trait Implementations§

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impl Clone for MemArg

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fn clone(&self) -> MemArg

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 Debug for MemArg

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

Formats the value using the given formatter. Read more
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impl Copy for MemArg

Auto Trait Implementations§

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impl Freeze for MemArg

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impl RefUnwindSafe for MemArg

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impl Send for MemArg

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impl Sync for MemArg

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impl Unpin for MemArg

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impl UnwindSafe for MemArg

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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: Copy,

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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> CloneToUninit for T
where T: Clone,

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default 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> 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.