Struct AddrG32

pub struct AddrG32 {
    pub host_heap_base: XReg,
    pub host_heap_bound: XReg,
    pub wasm_addr: XReg,
    pub offset: u16,
}

Immediate used for the “g32” addressing mode.

This addressing mode represents the computation of a WebAssembly address for a 32-bit linear memory. This automatically folds a bounds-check into the address computation to generate a trap if the address is out-of-bounds.

Fields

host_heap_base: XReg

The register holding the base address of the linear memory that is being accessed.

host_heap_bound: XReg

The register holding the byte bound limit of the heap being accessed.

wasm_addr: XReg

The register holding a 32-bit WebAssembly address into linear memory.

This is zero-extended on 64-bit platforms when performing the bounds check.

offset: u16

A static byte offset from host_heap_base that is added to wasm_addr when computing the bounds check.

Implementations

impl AddrG32

pub fn from_bits(bits: u32) -> AddrG32

Decodes this immediate from a 32-bit integer.

pub fn to_bits(&self) -> u32

Encodes this immediate into a 32-bit integer.

Trait Implementations

impl<'arbitrary> Arbitrary<'arbitrary> for AddrG32

fn arbitrary(u: &mut Unstructured<'arbitrary>) -> Result<Self>

Generate an arbitrary value of Self from the given unstructured data.

fn arbitrary_take_rest(u: Unstructured<'arbitrary>) -> Result<Self>

Generate an arbitrary value of Self from the entirety of the given unstructured data.

fn size_hint(depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

fn try_size_hint( depth: usize, ) -> Result<(usize, Option<usize>), MaxRecursionReached>

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

impl Clone for AddrG32

fn clone(&self) -> AddrG32

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AddrG32

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

Formats the value using the given formatter.

impl Decode for AddrG32

Available on crate feature decode only.

fn decode<T>(bytecode: &mut T) -> Result<Self, T::Error>

where T: BytecodeStream,

Decode this type from the given bytecode stream.

impl Encode for AddrG32

Available on crate feature encode only.

const WIDTH: u8 = 4u8

The encoded width of this instruction.

fn encode<E>(&self, sink: &mut E)

where E: Extend<u8>,

Encodes this operand or instruction into the provided sink.

impl Hash for AddrG32

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for AddrG32

fn cmp(&self, other: &AddrG32) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for AddrG32

fn eq(&self, other: &AddrG32) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for AddrG32

fn partial_cmp(&self, other: &AddrG32) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for AddrG32

impl Eq for AddrG32

impl StructuralPartialEq for AddrG32