Trait wasmtime_environ::PtrSize

source · 
pub trait PtrSize {

Show 16 methods    fn size(&self) -> u8;

    fn vmcaller_checked_anyfunc_func_ptr(&self) -> u8 { ... }
    fn vmcaller_checked_anyfunc_type_index(&self) -> u8 { ... }
    fn vmcaller_checked_anyfunc_vmctx(&self) -> u8 { ... }
    fn size_of_vmcaller_checked_anyfunc(&self) -> u8 { ... }
    fn size_of_vmglobal_definition(&self) -> u8 { ... }
    fn vmruntime_limits_stack_limit(&self) -> u8 { ... }
    fn vmruntime_limits_fuel_consumed(&self) -> u8 { ... }
    fn vmruntime_limits_epoch_deadline(&self) -> u8 { ... }
    fn vmruntime_limits_last_wasm_exit_fp(&self) -> u8 { ... }
    fn vmruntime_limits_last_wasm_exit_pc(&self) -> u8 { ... }
    fn vmruntime_limits_last_wasm_entry_sp(&self) -> u8 { ... }
    fn vmmemory_definition_base(&self) -> u8 { ... }
    fn vmmemory_definition_current_length(&self) -> u8 { ... }
    fn size_of_vmmemory_definition(&self) -> u8 { ... }
    fn size_of_vmmemory_pointer(&self) -> u8 { ... }

}
Expand description

Trait used for the ptr representation of the field of VMOffsets

Required Methods§

Returns the pointer size, in bytes, for the target.

Provided Methods§

The offset of the func_ptr field.

The offset of the type_index field.

The offset of the vmctx field.

Return the size of VMCallerCheckedAnyfunc.

Examples found in repository?
src/vmoffsets.rs (line 431)
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    fn from(fields: VMOffsetsFields<P>) -> VMOffsets<P> {
        let mut ret = Self {
            ptr: fields.ptr,
            num_imported_functions: fields.num_imported_functions,
            num_imported_tables: fields.num_imported_tables,
            num_imported_memories: fields.num_imported_memories,
            num_imported_globals: fields.num_imported_globals,
            num_defined_tables: fields.num_defined_tables,
            num_defined_memories: fields.num_defined_memories,
            num_owned_memories: fields.num_owned_memories,
            num_defined_globals: fields.num_defined_globals,
            num_escaped_funcs: fields.num_escaped_funcs,
            magic: 0,
            runtime_limits: 0,
            callee: 0,
            epoch_ptr: 0,
            externref_activations_table: 0,
            store: 0,
            builtin_functions: 0,
            signature_ids: 0,
            imported_functions: 0,
            imported_tables: 0,
            imported_memories: 0,
            imported_globals: 0,
            defined_tables: 0,
            defined_memories: 0,
            owned_memories: 0,
            defined_globals: 0,
            defined_anyfuncs: 0,
            size: 0,
        };

        // Convenience functions for checked addition and multiplication.
        // As side effect this reduces binary size by using only a single
        // `#[track_caller]` location for each function instead of one for
        // each individual invocation.
        #[inline]
        fn cadd(count: u32, size: u32) -> u32 {
            count.checked_add(size).unwrap()
        }

        #[inline]
        fn cmul(count: u32, size: u8) -> u32 {
            count.checked_mul(u32::from(size)).unwrap()
        }

        let mut next_field_offset = 0;

        macro_rules! fields {
            (size($field:ident) = $size:expr, $($rest:tt)*) => {
                ret.$field = next_field_offset;
                next_field_offset = cadd(next_field_offset, u32::from($size));
                fields!($($rest)*);
            };
            (align($align:expr), $($rest:tt)*) => {
                next_field_offset = align(next_field_offset, $align);
                fields!($($rest)*);
            };
            () => {};
        }

        fields! {
            size(magic) = 4u32,
            align(u32::from(ret.ptr.size())),
            size(runtime_limits) = ret.ptr.size(),
            size(callee) = ret.ptr.size(),
            size(epoch_ptr) = ret.ptr.size(),
            size(externref_activations_table) = ret.ptr.size(),
            size(store) = ret.ptr.size() * 2,
            size(builtin_functions) = ret.pointer_size(),
            size(signature_ids) = ret.ptr.size(),
            size(imported_functions)
                = cmul(ret.num_imported_functions, ret.size_of_vmfunction_import()),
            size(imported_tables)
                = cmul(ret.num_imported_tables, ret.size_of_vmtable_import()),
            size(imported_memories)
                = cmul(ret.num_imported_memories, ret.size_of_vmmemory_import()),
            size(imported_globals)
                = cmul(ret.num_imported_globals, ret.size_of_vmglobal_import()),
            size(defined_tables)
                = cmul(ret.num_defined_tables, ret.size_of_vmtable_definition()),
            size(defined_memories)
                = cmul(ret.num_defined_memories, ret.ptr.size_of_vmmemory_pointer()),
            size(owned_memories)
                = cmul(ret.num_owned_memories, ret.ptr.size_of_vmmemory_definition()),
            align(16),
            size(defined_globals)
                = cmul(ret.num_defined_globals, ret.ptr.size_of_vmglobal_definition()),
            size(defined_anyfuncs) = cmul(
                ret.num_escaped_funcs,
                ret.ptr.size_of_vmcaller_checked_anyfunc(),
            ),
        }

        ret.size = next_field_offset;

        // This is required by the implementation of `VMContext::instance` and
        // `VMContext::instance_mut`. If this value changes then those locations
        // need to be updated.
        assert_eq!(ret.magic, 0);

        return ret;
    }
}

impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `body` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmfunction_import_body(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmfunction_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMFunctionImport`.
    #[inline]
    pub fn size_of_vmfunction_import(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `*const VMFunctionBody`.
impl<P: PtrSize> VMOffsets<P> {
    /// The size of the `current_elements` field.
    #[allow(clippy::identity_op)]
    pub fn size_of_vmfunction_body_ptr(&self) -> u8 {
        1 * self.pointer_size()
    }
}

/// Offsets for `VMTableImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmtable_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmtable_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMTableImport`.
    #[inline]
    pub fn size_of_vmtable_import(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `VMTableDefinition`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `base` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmtable_definition_base(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `current_elements` field.
    #[allow(clippy::identity_op)]
    pub fn vmtable_definition_current_elements(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// The size of the `current_elements` field.
    #[inline]
    pub fn size_of_vmtable_definition_current_elements(&self) -> u8 {
        4
    }

    /// Return the size of `VMTableDefinition`.
    #[inline]
    pub fn size_of_vmtable_definition(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `VMMemoryImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmmemory_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmmemory_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMMemoryImport`.
    #[inline]
    pub fn size_of_vmmemory_import(&self) -> u8 {
        3 * self.pointer_size()
    }
}

/// Offsets for `VMGlobalImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmglobal_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// Return the size of `VMGlobalImport`.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn size_of_vmglobal_import(&self) -> u8 {
        1 * self.pointer_size()
    }
}

/// Offsets for `VMSharedSignatureIndex`.
impl<P: PtrSize> VMOffsets<P> {
    /// Return the size of `VMSharedSignatureIndex`.
    #[inline]
    pub fn size_of_vmshared_signature_index(&self) -> u8 {
        4
    }
}

/// Offsets for `VMContext`.
impl<P: PtrSize> VMOffsets<P> {
    /// Return the offset to the `magic` value in this `VMContext`.
    #[inline]
    pub fn vmctx_magic(&self) -> u32 {
        self.magic
    }

    /// Return the offset to the `VMRuntimeLimits` structure
    #[inline]
    pub fn vmctx_runtime_limits(&self) -> u32 {
        self.runtime_limits
    }

    /// Return the offset to the `callee` member in this `VMContext`.
    pub fn vmctx_callee(&self) -> u32 {
        self.callee
    }

    /// Return the offset to the `*const AtomicU64` epoch-counter
    /// pointer.
    #[inline]
    pub fn vmctx_epoch_ptr(&self) -> u32 {
        self.epoch_ptr
    }

    /// The offset of the `*mut VMExternRefActivationsTable` member.
    #[inline]
    pub fn vmctx_externref_activations_table(&self) -> u32 {
        self.externref_activations_table
    }

    /// The offset of the `*const dyn Store` member.
    #[inline]
    pub fn vmctx_store(&self) -> u32 {
        self.store
    }

    /// The offset of the `signature_ids` array pointer.
    #[inline]
    pub fn vmctx_signature_ids_array(&self) -> u32 {
        self.signature_ids
    }

    /// The offset of the `tables` array.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmctx_imported_functions_begin(&self) -> u32 {
        self.imported_functions
    }

    /// The offset of the `tables` array.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmctx_imported_tables_begin(&self) -> u32 {
        self.imported_tables
    }

    /// The offset of the `memories` array.
    #[inline]
    pub fn vmctx_imported_memories_begin(&self) -> u32 {
        self.imported_memories
    }

    /// The offset of the `globals` array.
    #[inline]
    pub fn vmctx_imported_globals_begin(&self) -> u32 {
        self.imported_globals
    }

    /// The offset of the `tables` array.
    #[inline]
    pub fn vmctx_tables_begin(&self) -> u32 {
        self.defined_tables
    }

    /// The offset of the `memories` array.
    #[inline]
    pub fn vmctx_memories_begin(&self) -> u32 {
        self.defined_memories
    }

    /// The offset of the `owned_memories` array.
    #[inline]
    pub fn vmctx_owned_memories_begin(&self) -> u32 {
        self.owned_memories
    }

    /// The offset of the `globals` array.
    #[inline]
    pub fn vmctx_globals_begin(&self) -> u32 {
        self.defined_globals
    }

    /// The offset of the `anyfuncs` array.
    #[inline]
    pub fn vmctx_anyfuncs_begin(&self) -> u32 {
        self.defined_anyfuncs
    }

    /// The offset of the builtin functions array.
    #[inline]
    pub fn vmctx_builtin_functions(&self) -> u32 {
        self.builtin_functions
    }

    /// Return the size of the `VMContext` allocation.
    #[inline]
    pub fn size_of_vmctx(&self) -> u32 {
        self.size
    }

    /// Return the offset to `VMFunctionImport` index `index`.
    #[inline]
    pub fn vmctx_vmfunction_import(&self, index: FuncIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_functions);
        self.vmctx_imported_functions_begin()
            + index.as_u32() * u32::from(self.size_of_vmfunction_import())
    }

    /// Return the offset to `VMTableImport` index `index`.
    #[inline]
    pub fn vmctx_vmtable_import(&self, index: TableIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_tables);
        self.vmctx_imported_tables_begin()
            + index.as_u32() * u32::from(self.size_of_vmtable_import())
    }

    /// Return the offset to `VMMemoryImport` index `index`.
    #[inline]
    pub fn vmctx_vmmemory_import(&self, index: MemoryIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_memories);
        self.vmctx_imported_memories_begin()
            + index.as_u32() * u32::from(self.size_of_vmmemory_import())
    }

    /// Return the offset to `VMGlobalImport` index `index`.
    #[inline]
    pub fn vmctx_vmglobal_import(&self, index: GlobalIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_globals);
        self.vmctx_imported_globals_begin()
            + index.as_u32() * u32::from(self.size_of_vmglobal_import())
    }

    /// Return the offset to `VMTableDefinition` index `index`.
    #[inline]
    pub fn vmctx_vmtable_definition(&self, index: DefinedTableIndex) -> u32 {
        assert!(index.as_u32() < self.num_defined_tables);
        self.vmctx_tables_begin() + index.as_u32() * u32::from(self.size_of_vmtable_definition())
    }

    /// Return the offset to the `*mut VMMemoryDefinition` at index `index`.
    #[inline]
    pub fn vmctx_vmmemory_pointer(&self, index: DefinedMemoryIndex) -> u32 {
        assert!(index.as_u32() < self.num_defined_memories);
        self.vmctx_memories_begin()
            + index.as_u32() * u32::from(self.ptr.size_of_vmmemory_pointer())
    }

    /// Return the offset to the owned `VMMemoryDefinition` at index `index`.
    #[inline]
    pub fn vmctx_vmmemory_definition(&self, index: OwnedMemoryIndex) -> u32 {
        assert!(index.as_u32() < self.num_owned_memories);
        self.vmctx_owned_memories_begin()
            + index.as_u32() * u32::from(self.ptr.size_of_vmmemory_definition())
    }

    /// Return the offset to the `VMGlobalDefinition` index `index`.
    #[inline]
    pub fn vmctx_vmglobal_definition(&self, index: DefinedGlobalIndex) -> u32 {
        assert!(index.as_u32() < self.num_defined_globals);
        self.vmctx_globals_begin()
            + index.as_u32() * u32::from(self.ptr.size_of_vmglobal_definition())
    }

    /// Return the offset to the `VMCallerCheckedAnyfunc` for the given function
    /// index (either imported or defined).
    #[inline]
    pub fn vmctx_anyfunc(&self, index: AnyfuncIndex) -> u32 {
        assert!(!index.is_reserved_value());
        assert!(index.as_u32() < self.num_escaped_funcs);
        self.vmctx_anyfuncs_begin()
            + index.as_u32() * u32::from(self.ptr.size_of_vmcaller_checked_anyfunc())
    }

Return the size of VMGlobalDefinition; this is the size of the largest value type (i.e. a V128).

Examples found in repository?
src/vmoffsets.rs (line 428)
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    fn from(fields: VMOffsetsFields<P>) -> VMOffsets<P> {
        let mut ret = Self {
            ptr: fields.ptr,
            num_imported_functions: fields.num_imported_functions,
            num_imported_tables: fields.num_imported_tables,
            num_imported_memories: fields.num_imported_memories,
            num_imported_globals: fields.num_imported_globals,
            num_defined_tables: fields.num_defined_tables,
            num_defined_memories: fields.num_defined_memories,
            num_owned_memories: fields.num_owned_memories,
            num_defined_globals: fields.num_defined_globals,
            num_escaped_funcs: fields.num_escaped_funcs,
            magic: 0,
            runtime_limits: 0,
            callee: 0,
            epoch_ptr: 0,
            externref_activations_table: 0,
            store: 0,
            builtin_functions: 0,
            signature_ids: 0,
            imported_functions: 0,
            imported_tables: 0,
            imported_memories: 0,
            imported_globals: 0,
            defined_tables: 0,
            defined_memories: 0,
            owned_memories: 0,
            defined_globals: 0,
            defined_anyfuncs: 0,
            size: 0,
        };

        // Convenience functions for checked addition and multiplication.
        // As side effect this reduces binary size by using only a single
        // `#[track_caller]` location for each function instead of one for
        // each individual invocation.
        #[inline]
        fn cadd(count: u32, size: u32) -> u32 {
            count.checked_add(size).unwrap()
        }

        #[inline]
        fn cmul(count: u32, size: u8) -> u32 {
            count.checked_mul(u32::from(size)).unwrap()
        }

        let mut next_field_offset = 0;

        macro_rules! fields {
            (size($field:ident) = $size:expr, $($rest:tt)*) => {
                ret.$field = next_field_offset;
                next_field_offset = cadd(next_field_offset, u32::from($size));
                fields!($($rest)*);
            };
            (align($align:expr), $($rest:tt)*) => {
                next_field_offset = align(next_field_offset, $align);
                fields!($($rest)*);
            };
            () => {};
        }

        fields! {
            size(magic) = 4u32,
            align(u32::from(ret.ptr.size())),
            size(runtime_limits) = ret.ptr.size(),
            size(callee) = ret.ptr.size(),
            size(epoch_ptr) = ret.ptr.size(),
            size(externref_activations_table) = ret.ptr.size(),
            size(store) = ret.ptr.size() * 2,
            size(builtin_functions) = ret.pointer_size(),
            size(signature_ids) = ret.ptr.size(),
            size(imported_functions)
                = cmul(ret.num_imported_functions, ret.size_of_vmfunction_import()),
            size(imported_tables)
                = cmul(ret.num_imported_tables, ret.size_of_vmtable_import()),
            size(imported_memories)
                = cmul(ret.num_imported_memories, ret.size_of_vmmemory_import()),
            size(imported_globals)
                = cmul(ret.num_imported_globals, ret.size_of_vmglobal_import()),
            size(defined_tables)
                = cmul(ret.num_defined_tables, ret.size_of_vmtable_definition()),
            size(defined_memories)
                = cmul(ret.num_defined_memories, ret.ptr.size_of_vmmemory_pointer()),
            size(owned_memories)
                = cmul(ret.num_owned_memories, ret.ptr.size_of_vmmemory_definition()),
            align(16),
            size(defined_globals)
                = cmul(ret.num_defined_globals, ret.ptr.size_of_vmglobal_definition()),
            size(defined_anyfuncs) = cmul(
                ret.num_escaped_funcs,
                ret.ptr.size_of_vmcaller_checked_anyfunc(),
            ),
        }

        ret.size = next_field_offset;

        // This is required by the implementation of `VMContext::instance` and
        // `VMContext::instance_mut`. If this value changes then those locations
        // need to be updated.
        assert_eq!(ret.magic, 0);

        return ret;
    }
}

impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `body` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmfunction_import_body(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmfunction_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMFunctionImport`.
    #[inline]
    pub fn size_of_vmfunction_import(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `*const VMFunctionBody`.
impl<P: PtrSize> VMOffsets<P> {
    /// The size of the `current_elements` field.
    #[allow(clippy::identity_op)]
    pub fn size_of_vmfunction_body_ptr(&self) -> u8 {
        1 * self.pointer_size()
    }
}

/// Offsets for `VMTableImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmtable_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmtable_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMTableImport`.
    #[inline]
    pub fn size_of_vmtable_import(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `VMTableDefinition`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `base` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmtable_definition_base(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `current_elements` field.
    #[allow(clippy::identity_op)]
    pub fn vmtable_definition_current_elements(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// The size of the `current_elements` field.
    #[inline]
    pub fn size_of_vmtable_definition_current_elements(&self) -> u8 {
        4
    }

    /// Return the size of `VMTableDefinition`.
    #[inline]
    pub fn size_of_vmtable_definition(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `VMMemoryImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmmemory_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmmemory_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMMemoryImport`.
    #[inline]
    pub fn size_of_vmmemory_import(&self) -> u8 {
        3 * self.pointer_size()
    }
}

/// Offsets for `VMGlobalImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmglobal_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// Return the size of `VMGlobalImport`.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn size_of_vmglobal_import(&self) -> u8 {
        1 * self.pointer_size()
    }
}

/// Offsets for `VMSharedSignatureIndex`.
impl<P: PtrSize> VMOffsets<P> {
    /// Return the size of `VMSharedSignatureIndex`.
    #[inline]
    pub fn size_of_vmshared_signature_index(&self) -> u8 {
        4
    }
}

/// Offsets for `VMContext`.
impl<P: PtrSize> VMOffsets<P> {
    /// Return the offset to the `magic` value in this `VMContext`.
    #[inline]
    pub fn vmctx_magic(&self) -> u32 {
        self.magic
    }

    /// Return the offset to the `VMRuntimeLimits` structure
    #[inline]
    pub fn vmctx_runtime_limits(&self) -> u32 {
        self.runtime_limits
    }

    /// Return the offset to the `callee` member in this `VMContext`.
    pub fn vmctx_callee(&self) -> u32 {
        self.callee
    }

    /// Return the offset to the `*const AtomicU64` epoch-counter
    /// pointer.
    #[inline]
    pub fn vmctx_epoch_ptr(&self) -> u32 {
        self.epoch_ptr
    }

    /// The offset of the `*mut VMExternRefActivationsTable` member.
    #[inline]
    pub fn vmctx_externref_activations_table(&self) -> u32 {
        self.externref_activations_table
    }

    /// The offset of the `*const dyn Store` member.
    #[inline]
    pub fn vmctx_store(&self) -> u32 {
        self.store
    }

    /// The offset of the `signature_ids` array pointer.
    #[inline]
    pub fn vmctx_signature_ids_array(&self) -> u32 {
        self.signature_ids
    }

    /// The offset of the `tables` array.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmctx_imported_functions_begin(&self) -> u32 {
        self.imported_functions
    }

    /// The offset of the `tables` array.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmctx_imported_tables_begin(&self) -> u32 {
        self.imported_tables
    }

    /// The offset of the `memories` array.
    #[inline]
    pub fn vmctx_imported_memories_begin(&self) -> u32 {
        self.imported_memories
    }

    /// The offset of the `globals` array.
    #[inline]
    pub fn vmctx_imported_globals_begin(&self) -> u32 {
        self.imported_globals
    }

    /// The offset of the `tables` array.
    #[inline]
    pub fn vmctx_tables_begin(&self) -> u32 {
        self.defined_tables
    }

    /// The offset of the `memories` array.
    #[inline]
    pub fn vmctx_memories_begin(&self) -> u32 {
        self.defined_memories
    }

    /// The offset of the `owned_memories` array.
    #[inline]
    pub fn vmctx_owned_memories_begin(&self) -> u32 {
        self.owned_memories
    }

    /// The offset of the `globals` array.
    #[inline]
    pub fn vmctx_globals_begin(&self) -> u32 {
        self.defined_globals
    }

    /// The offset of the `anyfuncs` array.
    #[inline]
    pub fn vmctx_anyfuncs_begin(&self) -> u32 {
        self.defined_anyfuncs
    }

    /// The offset of the builtin functions array.
    #[inline]
    pub fn vmctx_builtin_functions(&self) -> u32 {
        self.builtin_functions
    }

    /// Return the size of the `VMContext` allocation.
    #[inline]
    pub fn size_of_vmctx(&self) -> u32 {
        self.size
    }

    /// Return the offset to `VMFunctionImport` index `index`.
    #[inline]
    pub fn vmctx_vmfunction_import(&self, index: FuncIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_functions);
        self.vmctx_imported_functions_begin()
            + index.as_u32() * u32::from(self.size_of_vmfunction_import())
    }

    /// Return the offset to `VMTableImport` index `index`.
    #[inline]
    pub fn vmctx_vmtable_import(&self, index: TableIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_tables);
        self.vmctx_imported_tables_begin()
            + index.as_u32() * u32::from(self.size_of_vmtable_import())
    }

    /// Return the offset to `VMMemoryImport` index `index`.
    #[inline]
    pub fn vmctx_vmmemory_import(&self, index: MemoryIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_memories);
        self.vmctx_imported_memories_begin()
            + index.as_u32() * u32::from(self.size_of_vmmemory_import())
    }

    /// Return the offset to `VMGlobalImport` index `index`.
    #[inline]
    pub fn vmctx_vmglobal_import(&self, index: GlobalIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_globals);
        self.vmctx_imported_globals_begin()
            + index.as_u32() * u32::from(self.size_of_vmglobal_import())
    }

    /// Return the offset to `VMTableDefinition` index `index`.
    #[inline]
    pub fn vmctx_vmtable_definition(&self, index: DefinedTableIndex) -> u32 {
        assert!(index.as_u32() < self.num_defined_tables);
        self.vmctx_tables_begin() + index.as_u32() * u32::from(self.size_of_vmtable_definition())
    }

    /// Return the offset to the `*mut VMMemoryDefinition` at index `index`.
    #[inline]
    pub fn vmctx_vmmemory_pointer(&self, index: DefinedMemoryIndex) -> u32 {
        assert!(index.as_u32() < self.num_defined_memories);
        self.vmctx_memories_begin()
            + index.as_u32() * u32::from(self.ptr.size_of_vmmemory_pointer())
    }

    /// Return the offset to the owned `VMMemoryDefinition` at index `index`.
    #[inline]
    pub fn vmctx_vmmemory_definition(&self, index: OwnedMemoryIndex) -> u32 {
        assert!(index.as_u32() < self.num_owned_memories);
        self.vmctx_owned_memories_begin()
            + index.as_u32() * u32::from(self.ptr.size_of_vmmemory_definition())
    }

    /// Return the offset to the `VMGlobalDefinition` index `index`.
    #[inline]
    pub fn vmctx_vmglobal_definition(&self, index: DefinedGlobalIndex) -> u32 {
        assert!(index.as_u32() < self.num_defined_globals);
        self.vmctx_globals_begin()
            + index.as_u32() * u32::from(self.ptr.size_of_vmglobal_definition())
    }

Return the offset of the stack_limit field of VMRuntimeLimits

Return the offset of the fuel_consumed field of VMRuntimeLimits

Examples found in repository?
src/vmoffsets.rs (line 151)
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    fn vmruntime_limits_epoch_deadline(&self) -> u8 {
        self.vmruntime_limits_fuel_consumed() + 8 // `stack_limit` is a pointer; `fuel_consumed` is an `i64`
    }

Return the offset of the epoch_deadline field of VMRuntimeLimits

Examples found in repository?
src/vmoffsets.rs (line 156)
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    fn vmruntime_limits_last_wasm_exit_fp(&self) -> u8 {
        self.vmruntime_limits_epoch_deadline() + 8
    }

Return the offset of the last_wasm_exit_fp field of VMRuntimeLimits.

Examples found in repository?
src/vmoffsets.rs (line 161)
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    fn vmruntime_limits_last_wasm_exit_pc(&self) -> u8 {
        self.vmruntime_limits_last_wasm_exit_fp() + self.size()
    }

Return the offset of the last_wasm_exit_pc field of VMRuntimeLimits.

Examples found in repository?
src/vmoffsets.rs (line 166)
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    fn vmruntime_limits_last_wasm_entry_sp(&self) -> u8 {
        self.vmruntime_limits_last_wasm_exit_pc() + self.size()
    }
source

fn vmruntime_limits_last_wasm_entry_sp(&self) -> u8

Return the offset of the last_enty_sp field of VMRuntimeLimits.

The offset of the base field.

Examples found in repository?
src/vmoffsets.rs (line 807)
806
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    pub fn vmctx_vmmemory_definition_base(&self, index: OwnedMemoryIndex) -> u32 {
        self.vmctx_vmmemory_definition(index) + u32::from(self.ptr.vmmemory_definition_base())
    }

The offset of the current_length field.

Examples found in repository?
src/vmoffsets.rs (line 814)
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    pub fn vmctx_vmmemory_definition_current_length(&self, index: OwnedMemoryIndex) -> u32 {
        self.vmctx_vmmemory_definition(index)
            + u32::from(self.ptr.vmmemory_definition_current_length())
    }

Return the size of VMMemoryDefinition.

Examples found in repository?
src/vmoffsets.rs (line 425)
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    fn from(fields: VMOffsetsFields<P>) -> VMOffsets<P> {
        let mut ret = Self {
            ptr: fields.ptr,
            num_imported_functions: fields.num_imported_functions,
            num_imported_tables: fields.num_imported_tables,
            num_imported_memories: fields.num_imported_memories,
            num_imported_globals: fields.num_imported_globals,
            num_defined_tables: fields.num_defined_tables,
            num_defined_memories: fields.num_defined_memories,
            num_owned_memories: fields.num_owned_memories,
            num_defined_globals: fields.num_defined_globals,
            num_escaped_funcs: fields.num_escaped_funcs,
            magic: 0,
            runtime_limits: 0,
            callee: 0,
            epoch_ptr: 0,
            externref_activations_table: 0,
            store: 0,
            builtin_functions: 0,
            signature_ids: 0,
            imported_functions: 0,
            imported_tables: 0,
            imported_memories: 0,
            imported_globals: 0,
            defined_tables: 0,
            defined_memories: 0,
            owned_memories: 0,
            defined_globals: 0,
            defined_anyfuncs: 0,
            size: 0,
        };

        // Convenience functions for checked addition and multiplication.
        // As side effect this reduces binary size by using only a single
        // `#[track_caller]` location for each function instead of one for
        // each individual invocation.
        #[inline]
        fn cadd(count: u32, size: u32) -> u32 {
            count.checked_add(size).unwrap()
        }

        #[inline]
        fn cmul(count: u32, size: u8) -> u32 {
            count.checked_mul(u32::from(size)).unwrap()
        }

        let mut next_field_offset = 0;

        macro_rules! fields {
            (size($field:ident) = $size:expr, $($rest:tt)*) => {
                ret.$field = next_field_offset;
                next_field_offset = cadd(next_field_offset, u32::from($size));
                fields!($($rest)*);
            };
            (align($align:expr), $($rest:tt)*) => {
                next_field_offset = align(next_field_offset, $align);
                fields!($($rest)*);
            };
            () => {};
        }

        fields! {
            size(magic) = 4u32,
            align(u32::from(ret.ptr.size())),
            size(runtime_limits) = ret.ptr.size(),
            size(callee) = ret.ptr.size(),
            size(epoch_ptr) = ret.ptr.size(),
            size(externref_activations_table) = ret.ptr.size(),
            size(store) = ret.ptr.size() * 2,
            size(builtin_functions) = ret.pointer_size(),
            size(signature_ids) = ret.ptr.size(),
            size(imported_functions)
                = cmul(ret.num_imported_functions, ret.size_of_vmfunction_import()),
            size(imported_tables)
                = cmul(ret.num_imported_tables, ret.size_of_vmtable_import()),
            size(imported_memories)
                = cmul(ret.num_imported_memories, ret.size_of_vmmemory_import()),
            size(imported_globals)
                = cmul(ret.num_imported_globals, ret.size_of_vmglobal_import()),
            size(defined_tables)
                = cmul(ret.num_defined_tables, ret.size_of_vmtable_definition()),
            size(defined_memories)
                = cmul(ret.num_defined_memories, ret.ptr.size_of_vmmemory_pointer()),
            size(owned_memories)
                = cmul(ret.num_owned_memories, ret.ptr.size_of_vmmemory_definition()),
            align(16),
            size(defined_globals)
                = cmul(ret.num_defined_globals, ret.ptr.size_of_vmglobal_definition()),
            size(defined_anyfuncs) = cmul(
                ret.num_escaped_funcs,
                ret.ptr.size_of_vmcaller_checked_anyfunc(),
            ),
        }

        ret.size = next_field_offset;

        // This is required by the implementation of `VMContext::instance` and
        // `VMContext::instance_mut`. If this value changes then those locations
        // need to be updated.
        assert_eq!(ret.magic, 0);

        return ret;
    }
}

impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `body` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmfunction_import_body(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmfunction_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMFunctionImport`.
    #[inline]
    pub fn size_of_vmfunction_import(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `*const VMFunctionBody`.
impl<P: PtrSize> VMOffsets<P> {
    /// The size of the `current_elements` field.
    #[allow(clippy::identity_op)]
    pub fn size_of_vmfunction_body_ptr(&self) -> u8 {
        1 * self.pointer_size()
    }
}

/// Offsets for `VMTableImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmtable_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmtable_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMTableImport`.
    #[inline]
    pub fn size_of_vmtable_import(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `VMTableDefinition`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `base` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmtable_definition_base(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `current_elements` field.
    #[allow(clippy::identity_op)]
    pub fn vmtable_definition_current_elements(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// The size of the `current_elements` field.
    #[inline]
    pub fn size_of_vmtable_definition_current_elements(&self) -> u8 {
        4
    }

    /// Return the size of `VMTableDefinition`.
    #[inline]
    pub fn size_of_vmtable_definition(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `VMMemoryImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmmemory_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmmemory_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMMemoryImport`.
    #[inline]
    pub fn size_of_vmmemory_import(&self) -> u8 {
        3 * self.pointer_size()
    }
}

/// Offsets for `VMGlobalImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmglobal_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// Return the size of `VMGlobalImport`.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn size_of_vmglobal_import(&self) -> u8 {
        1 * self.pointer_size()
    }
}

/// Offsets for `VMSharedSignatureIndex`.
impl<P: PtrSize> VMOffsets<P> {
    /// Return the size of `VMSharedSignatureIndex`.
    #[inline]
    pub fn size_of_vmshared_signature_index(&self) -> u8 {
        4
    }
}

/// Offsets for `VMContext`.
impl<P: PtrSize> VMOffsets<P> {
    /// Return the offset to the `magic` value in this `VMContext`.
    #[inline]
    pub fn vmctx_magic(&self) -> u32 {
        self.magic
    }

    /// Return the offset to the `VMRuntimeLimits` structure
    #[inline]
    pub fn vmctx_runtime_limits(&self) -> u32 {
        self.runtime_limits
    }

    /// Return the offset to the `callee` member in this `VMContext`.
    pub fn vmctx_callee(&self) -> u32 {
        self.callee
    }

    /// Return the offset to the `*const AtomicU64` epoch-counter
    /// pointer.
    #[inline]
    pub fn vmctx_epoch_ptr(&self) -> u32 {
        self.epoch_ptr
    }

    /// The offset of the `*mut VMExternRefActivationsTable` member.
    #[inline]
    pub fn vmctx_externref_activations_table(&self) -> u32 {
        self.externref_activations_table
    }

    /// The offset of the `*const dyn Store` member.
    #[inline]
    pub fn vmctx_store(&self) -> u32 {
        self.store
    }

    /// The offset of the `signature_ids` array pointer.
    #[inline]
    pub fn vmctx_signature_ids_array(&self) -> u32 {
        self.signature_ids
    }

    /// The offset of the `tables` array.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmctx_imported_functions_begin(&self) -> u32 {
        self.imported_functions
    }

    /// The offset of the `tables` array.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmctx_imported_tables_begin(&self) -> u32 {
        self.imported_tables
    }

    /// The offset of the `memories` array.
    #[inline]
    pub fn vmctx_imported_memories_begin(&self) -> u32 {
        self.imported_memories
    }

    /// The offset of the `globals` array.
    #[inline]
    pub fn vmctx_imported_globals_begin(&self) -> u32 {
        self.imported_globals
    }

    /// The offset of the `tables` array.
    #[inline]
    pub fn vmctx_tables_begin(&self) -> u32 {
        self.defined_tables
    }

    /// The offset of the `memories` array.
    #[inline]
    pub fn vmctx_memories_begin(&self) -> u32 {
        self.defined_memories
    }

    /// The offset of the `owned_memories` array.
    #[inline]
    pub fn vmctx_owned_memories_begin(&self) -> u32 {
        self.owned_memories
    }

    /// The offset of the `globals` array.
    #[inline]
    pub fn vmctx_globals_begin(&self) -> u32 {
        self.defined_globals
    }

    /// The offset of the `anyfuncs` array.
    #[inline]
    pub fn vmctx_anyfuncs_begin(&self) -> u32 {
        self.defined_anyfuncs
    }

    /// The offset of the builtin functions array.
    #[inline]
    pub fn vmctx_builtin_functions(&self) -> u32 {
        self.builtin_functions
    }

    /// Return the size of the `VMContext` allocation.
    #[inline]
    pub fn size_of_vmctx(&self) -> u32 {
        self.size
    }

    /// Return the offset to `VMFunctionImport` index `index`.
    #[inline]
    pub fn vmctx_vmfunction_import(&self, index: FuncIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_functions);
        self.vmctx_imported_functions_begin()
            + index.as_u32() * u32::from(self.size_of_vmfunction_import())
    }

    /// Return the offset to `VMTableImport` index `index`.
    #[inline]
    pub fn vmctx_vmtable_import(&self, index: TableIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_tables);
        self.vmctx_imported_tables_begin()
            + index.as_u32() * u32::from(self.size_of_vmtable_import())
    }

    /// Return the offset to `VMMemoryImport` index `index`.
    #[inline]
    pub fn vmctx_vmmemory_import(&self, index: MemoryIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_memories);
        self.vmctx_imported_memories_begin()
            + index.as_u32() * u32::from(self.size_of_vmmemory_import())
    }

    /// Return the offset to `VMGlobalImport` index `index`.
    #[inline]
    pub fn vmctx_vmglobal_import(&self, index: GlobalIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_globals);
        self.vmctx_imported_globals_begin()
            + index.as_u32() * u32::from(self.size_of_vmglobal_import())
    }

    /// Return the offset to `VMTableDefinition` index `index`.
    #[inline]
    pub fn vmctx_vmtable_definition(&self, index: DefinedTableIndex) -> u32 {
        assert!(index.as_u32() < self.num_defined_tables);
        self.vmctx_tables_begin() + index.as_u32() * u32::from(self.size_of_vmtable_definition())
    }

    /// Return the offset to the `*mut VMMemoryDefinition` at index `index`.
    #[inline]
    pub fn vmctx_vmmemory_pointer(&self, index: DefinedMemoryIndex) -> u32 {
        assert!(index.as_u32() < self.num_defined_memories);
        self.vmctx_memories_begin()
            + index.as_u32() * u32::from(self.ptr.size_of_vmmemory_pointer())
    }

    /// Return the offset to the owned `VMMemoryDefinition` at index `index`.
    #[inline]
    pub fn vmctx_vmmemory_definition(&self, index: OwnedMemoryIndex) -> u32 {
        assert!(index.as_u32() < self.num_owned_memories);
        self.vmctx_owned_memories_begin()
            + index.as_u32() * u32::from(self.ptr.size_of_vmmemory_definition())
    }

Return the size of *mut VMMemoryDefinition.

Examples found in repository?
src/vmoffsets.rs (line 423)
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    fn from(fields: VMOffsetsFields<P>) -> VMOffsets<P> {
        let mut ret = Self {
            ptr: fields.ptr,
            num_imported_functions: fields.num_imported_functions,
            num_imported_tables: fields.num_imported_tables,
            num_imported_memories: fields.num_imported_memories,
            num_imported_globals: fields.num_imported_globals,
            num_defined_tables: fields.num_defined_tables,
            num_defined_memories: fields.num_defined_memories,
            num_owned_memories: fields.num_owned_memories,
            num_defined_globals: fields.num_defined_globals,
            num_escaped_funcs: fields.num_escaped_funcs,
            magic: 0,
            runtime_limits: 0,
            callee: 0,
            epoch_ptr: 0,
            externref_activations_table: 0,
            store: 0,
            builtin_functions: 0,
            signature_ids: 0,
            imported_functions: 0,
            imported_tables: 0,
            imported_memories: 0,
            imported_globals: 0,
            defined_tables: 0,
            defined_memories: 0,
            owned_memories: 0,
            defined_globals: 0,
            defined_anyfuncs: 0,
            size: 0,
        };

        // Convenience functions for checked addition and multiplication.
        // As side effect this reduces binary size by using only a single
        // `#[track_caller]` location for each function instead of one for
        // each individual invocation.
        #[inline]
        fn cadd(count: u32, size: u32) -> u32 {
            count.checked_add(size).unwrap()
        }

        #[inline]
        fn cmul(count: u32, size: u8) -> u32 {
            count.checked_mul(u32::from(size)).unwrap()
        }

        let mut next_field_offset = 0;

        macro_rules! fields {
            (size($field:ident) = $size:expr, $($rest:tt)*) => {
                ret.$field = next_field_offset;
                next_field_offset = cadd(next_field_offset, u32::from($size));
                fields!($($rest)*);
            };
            (align($align:expr), $($rest:tt)*) => {
                next_field_offset = align(next_field_offset, $align);
                fields!($($rest)*);
            };
            () => {};
        }

        fields! {
            size(magic) = 4u32,
            align(u32::from(ret.ptr.size())),
            size(runtime_limits) = ret.ptr.size(),
            size(callee) = ret.ptr.size(),
            size(epoch_ptr) = ret.ptr.size(),
            size(externref_activations_table) = ret.ptr.size(),
            size(store) = ret.ptr.size() * 2,
            size(builtin_functions) = ret.pointer_size(),
            size(signature_ids) = ret.ptr.size(),
            size(imported_functions)
                = cmul(ret.num_imported_functions, ret.size_of_vmfunction_import()),
            size(imported_tables)
                = cmul(ret.num_imported_tables, ret.size_of_vmtable_import()),
            size(imported_memories)
                = cmul(ret.num_imported_memories, ret.size_of_vmmemory_import()),
            size(imported_globals)
                = cmul(ret.num_imported_globals, ret.size_of_vmglobal_import()),
            size(defined_tables)
                = cmul(ret.num_defined_tables, ret.size_of_vmtable_definition()),
            size(defined_memories)
                = cmul(ret.num_defined_memories, ret.ptr.size_of_vmmemory_pointer()),
            size(owned_memories)
                = cmul(ret.num_owned_memories, ret.ptr.size_of_vmmemory_definition()),
            align(16),
            size(defined_globals)
                = cmul(ret.num_defined_globals, ret.ptr.size_of_vmglobal_definition()),
            size(defined_anyfuncs) = cmul(
                ret.num_escaped_funcs,
                ret.ptr.size_of_vmcaller_checked_anyfunc(),
            ),
        }

        ret.size = next_field_offset;

        // This is required by the implementation of `VMContext::instance` and
        // `VMContext::instance_mut`. If this value changes then those locations
        // need to be updated.
        assert_eq!(ret.magic, 0);

        return ret;
    }
}

impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `body` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmfunction_import_body(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmfunction_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMFunctionImport`.
    #[inline]
    pub fn size_of_vmfunction_import(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `*const VMFunctionBody`.
impl<P: PtrSize> VMOffsets<P> {
    /// The size of the `current_elements` field.
    #[allow(clippy::identity_op)]
    pub fn size_of_vmfunction_body_ptr(&self) -> u8 {
        1 * self.pointer_size()
    }
}

/// Offsets for `VMTableImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmtable_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmtable_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMTableImport`.
    #[inline]
    pub fn size_of_vmtable_import(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `VMTableDefinition`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `base` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmtable_definition_base(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `current_elements` field.
    #[allow(clippy::identity_op)]
    pub fn vmtable_definition_current_elements(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// The size of the `current_elements` field.
    #[inline]
    pub fn size_of_vmtable_definition_current_elements(&self) -> u8 {
        4
    }

    /// Return the size of `VMTableDefinition`.
    #[inline]
    pub fn size_of_vmtable_definition(&self) -> u8 {
        2 * self.pointer_size()
    }
}

/// Offsets for `VMMemoryImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmmemory_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// The offset of the `vmctx` field.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmmemory_import_vmctx(&self) -> u8 {
        1 * self.pointer_size()
    }

    /// Return the size of `VMMemoryImport`.
    #[inline]
    pub fn size_of_vmmemory_import(&self) -> u8 {
        3 * self.pointer_size()
    }
}

/// Offsets for `VMGlobalImport`.
impl<P: PtrSize> VMOffsets<P> {
    /// The offset of the `from` field.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmglobal_import_from(&self) -> u8 {
        0 * self.pointer_size()
    }

    /// Return the size of `VMGlobalImport`.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn size_of_vmglobal_import(&self) -> u8 {
        1 * self.pointer_size()
    }
}

/// Offsets for `VMSharedSignatureIndex`.
impl<P: PtrSize> VMOffsets<P> {
    /// Return the size of `VMSharedSignatureIndex`.
    #[inline]
    pub fn size_of_vmshared_signature_index(&self) -> u8 {
        4
    }
}

/// Offsets for `VMContext`.
impl<P: PtrSize> VMOffsets<P> {
    /// Return the offset to the `magic` value in this `VMContext`.
    #[inline]
    pub fn vmctx_magic(&self) -> u32 {
        self.magic
    }

    /// Return the offset to the `VMRuntimeLimits` structure
    #[inline]
    pub fn vmctx_runtime_limits(&self) -> u32 {
        self.runtime_limits
    }

    /// Return the offset to the `callee` member in this `VMContext`.
    pub fn vmctx_callee(&self) -> u32 {
        self.callee
    }

    /// Return the offset to the `*const AtomicU64` epoch-counter
    /// pointer.
    #[inline]
    pub fn vmctx_epoch_ptr(&self) -> u32 {
        self.epoch_ptr
    }

    /// The offset of the `*mut VMExternRefActivationsTable` member.
    #[inline]
    pub fn vmctx_externref_activations_table(&self) -> u32 {
        self.externref_activations_table
    }

    /// The offset of the `*const dyn Store` member.
    #[inline]
    pub fn vmctx_store(&self) -> u32 {
        self.store
    }

    /// The offset of the `signature_ids` array pointer.
    #[inline]
    pub fn vmctx_signature_ids_array(&self) -> u32 {
        self.signature_ids
    }

    /// The offset of the `tables` array.
    #[allow(clippy::erasing_op)]
    #[inline]
    pub fn vmctx_imported_functions_begin(&self) -> u32 {
        self.imported_functions
    }

    /// The offset of the `tables` array.
    #[allow(clippy::identity_op)]
    #[inline]
    pub fn vmctx_imported_tables_begin(&self) -> u32 {
        self.imported_tables
    }

    /// The offset of the `memories` array.
    #[inline]
    pub fn vmctx_imported_memories_begin(&self) -> u32 {
        self.imported_memories
    }

    /// The offset of the `globals` array.
    #[inline]
    pub fn vmctx_imported_globals_begin(&self) -> u32 {
        self.imported_globals
    }

    /// The offset of the `tables` array.
    #[inline]
    pub fn vmctx_tables_begin(&self) -> u32 {
        self.defined_tables
    }

    /// The offset of the `memories` array.
    #[inline]
    pub fn vmctx_memories_begin(&self) -> u32 {
        self.defined_memories
    }

    /// The offset of the `owned_memories` array.
    #[inline]
    pub fn vmctx_owned_memories_begin(&self) -> u32 {
        self.owned_memories
    }

    /// The offset of the `globals` array.
    #[inline]
    pub fn vmctx_globals_begin(&self) -> u32 {
        self.defined_globals
    }

    /// The offset of the `anyfuncs` array.
    #[inline]
    pub fn vmctx_anyfuncs_begin(&self) -> u32 {
        self.defined_anyfuncs
    }

    /// The offset of the builtin functions array.
    #[inline]
    pub fn vmctx_builtin_functions(&self) -> u32 {
        self.builtin_functions
    }

    /// Return the size of the `VMContext` allocation.
    #[inline]
    pub fn size_of_vmctx(&self) -> u32 {
        self.size
    }

    /// Return the offset to `VMFunctionImport` index `index`.
    #[inline]
    pub fn vmctx_vmfunction_import(&self, index: FuncIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_functions);
        self.vmctx_imported_functions_begin()
            + index.as_u32() * u32::from(self.size_of_vmfunction_import())
    }

    /// Return the offset to `VMTableImport` index `index`.
    #[inline]
    pub fn vmctx_vmtable_import(&self, index: TableIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_tables);
        self.vmctx_imported_tables_begin()
            + index.as_u32() * u32::from(self.size_of_vmtable_import())
    }

    /// Return the offset to `VMMemoryImport` index `index`.
    #[inline]
    pub fn vmctx_vmmemory_import(&self, index: MemoryIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_memories);
        self.vmctx_imported_memories_begin()
            + index.as_u32() * u32::from(self.size_of_vmmemory_import())
    }

    /// Return the offset to `VMGlobalImport` index `index`.
    #[inline]
    pub fn vmctx_vmglobal_import(&self, index: GlobalIndex) -> u32 {
        assert!(index.as_u32() < self.num_imported_globals);
        self.vmctx_imported_globals_begin()
            + index.as_u32() * u32::from(self.size_of_vmglobal_import())
    }

    /// Return the offset to `VMTableDefinition` index `index`.
    #[inline]
    pub fn vmctx_vmtable_definition(&self, index: DefinedTableIndex) -> u32 {
        assert!(index.as_u32() < self.num_defined_tables);
        self.vmctx_tables_begin() + index.as_u32() * u32::from(self.size_of_vmtable_definition())
    }

    /// Return the offset to the `*mut VMMemoryDefinition` at index `index`.
    #[inline]
    pub fn vmctx_vmmemory_pointer(&self, index: DefinedMemoryIndex) -> u32 {
        assert!(index.as_u32() < self.num_defined_memories);
        self.vmctx_memories_begin()
            + index.as_u32() * u32::from(self.ptr.size_of_vmmemory_pointer())
    }

Implementations on Foreign Types§

Implementors§