Struct wasmtime_environ::VMOffsets

pub struct VMOffsets {
    pub pointer_size: u8,
    pub num_signature_ids: u32,
    pub num_imported_functions: u32,
    pub num_imported_tables: u32,
    pub num_imported_memories: u32,
    pub num_imported_globals: u32,
    pub num_defined_functions: u32,
    pub num_defined_tables: u32,
    pub num_defined_memories: u32,
    pub num_defined_globals: u32,
    // some fields omitted
}

This class computes offsets to fields within VMContext and other related structs that JIT code accesses directly.

Fields

pointer_size: u8

The size in bytes of a pointer on the target.

num_signature_ids: u32

The number of signature declarations in the module.

num_imported_functions: u32

The number of imported functions in the module.

num_imported_tables: u32

The number of imported tables in the module.

num_imported_memories: u32

The number of imported memories in the module.

num_imported_globals: u32

The number of imported globals in the module.

num_defined_functions: u32

The number of defined functions in the module.

num_defined_tables: u32

The number of defined tables in the module.

num_defined_memories: u32

The number of defined memories in the module.

num_defined_globals: u32

The number of defined globals in the module.

Implementations

impl VMOffsets

pub fn new(pointer_size: u8, module: &Module) -> Self

Return a new VMOffsets instance, for a given pointer size.

impl VMOffsets

Offsets for VMFunctionImport.

pub fn vmfunction_import_body(&self) -> u8

The offset of the body field.

pub fn vmfunction_import_vmctx(&self) -> u8

The offset of the vmctx field.

pub fn size_of_vmfunction_import(&self) -> u8

Return the size of VMFunctionImport.

impl VMOffsets

Offsets for *const VMFunctionBody.

pub fn size_of_vmfunction_body_ptr(&self) -> u8

The size of the current_elements field.

impl VMOffsets

Offsets for VMTableImport.

pub fn vmtable_import_from(&self) -> u8

The offset of the from field.

pub fn vmtable_import_vmctx(&self) -> u8

The offset of the vmctx field.

pub fn size_of_vmtable_import(&self) -> u8

Return the size of VMTableImport.

impl VMOffsets

Offsets for VMTableDefinition.

pub fn vmtable_definition_base(&self) -> u8

The offset of the base field.

pub fn vmtable_definition_current_elements(&self) -> u8

The offset of the current_elements field.

pub fn size_of_vmtable_definition_current_elements(&self) -> u8

The size of the current_elements field.

pub fn size_of_vmtable_definition(&self) -> u8

Return the size of VMTableDefinition.

pub fn type_of_vmtable_definition_current_elements(&self) -> Type

The type of the current_elements field.

impl VMOffsets

Offsets for VMMemoryImport.

pub fn vmmemory_import_from(&self) -> u8

The offset of the from field.

pub fn vmmemory_import_vmctx(&self) -> u8

The offset of the vmctx field.

pub fn size_of_vmmemory_import(&self) -> u8

Return the size of VMMemoryImport.

impl VMOffsets

Offsets for VMMemoryDefinition.

pub fn vmmemory_definition_base(&self) -> u8

The offset of the base field.

pub fn vmmemory_definition_current_length(&self) -> u8

The offset of the current_length field.

pub fn size_of_vmmemory_definition_current_length(&self) -> u8

The size of the current_length field.

pub fn size_of_vmmemory_definition(&self) -> u8

Return the size of VMMemoryDefinition.

pub fn type_of_vmmemory_definition_current_length(&self) -> Type

The type of the current_length field.

impl VMOffsets

Offsets for VMGlobalImport.

pub fn vmglobal_import_from(&self) -> u8

The offset of the from field.

pub fn size_of_vmglobal_import(&self) -> u8

Return the size of VMGlobalImport.

impl VMOffsets

Offsets for VMGlobalDefinition.

pub fn size_of_vmglobal_definition(&self) -> u8

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

impl VMOffsets

Offsets for VMSharedSignatureIndex.

pub fn size_of_vmshared_signature_index(&self) -> u8

Return the size of VMSharedSignatureIndex.

impl VMOffsets

Offsets for VMInterrupts.

pub fn vminterrupts_stack_limit(&self) -> u8

Return the offset of the stack_limit field of VMInterrupts

pub fn vminterrupts_fuel_consumed(&self) -> u8

Return the offset of the fuel_consumed field of VMInterrupts

impl VMOffsets

Offsets for VMCallerCheckedAnyfunc.

pub fn vmcaller_checked_anyfunc_func_ptr(&self) -> u8

The offset of the func_ptr field.

pub fn vmcaller_checked_anyfunc_type_index(&self) -> u8

The offset of the type_index field.

pub fn vmcaller_checked_anyfunc_vmctx(&self) -> u8

The offset of the vmctx field.

pub fn size_of_vmcaller_checked_anyfunc(&self) -> u8

Return the size of VMCallerCheckedAnyfunc.

impl VMOffsets

Offsets for VMContext.

pub fn vmctx_interrupts(&self) -> u32

Return the offset to the VMInterrupts structure

pub fn vmctx_externref_activations_table(&self) -> u32

The offset of the VMExternRefActivationsTable member.

pub fn vmctx_module_info_lookup(&self) -> u32

The offset of the *const dyn ModuleInfoLookup member.

pub fn vmctx_signature_ids_begin(&self) -> u32

The offset of the signature_ids array.

pub fn vmctx_imported_functions_begin(&self) -> u32

The offset of the tables array.

pub fn vmctx_imported_tables_begin(&self) -> u32

The offset of the tables array.

pub fn vmctx_imported_memories_begin(&self) -> u32

The offset of the memories array.

pub fn vmctx_imported_globals_begin(&self) -> u32

The offset of the globals array.

pub fn vmctx_tables_begin(&self) -> u32

The offset of the tables array.

pub fn vmctx_memories_begin(&self) -> u32

The offset of the memories array.

pub fn vmctx_globals_begin(&self) -> u32

The offset of the globals array.

pub fn vmctx_anyfuncs_begin(&self) -> u32

The offset of the anyfuncs array.

pub fn vmctx_builtin_functions_begin(&self) -> u32

The offset of the builtin functions array.

pub fn size_of_vmctx(&self) -> u32

Return the size of the VMContext allocation.

pub fn vmctx_vmshared_signature_id(&self, index: TypeIndex) -> u32

Return the offset to VMSharedSignatureId index index.

pub fn vmctx_vmfunction_import(&self, index: FuncIndex) -> u32

Return the offset to VMFunctionImport index index.

pub fn vmctx_vmtable_import(&self, index: TableIndex) -> u32

Return the offset to VMTableImport index index.

pub fn vmctx_vmmemory_import(&self, index: MemoryIndex) -> u32

Return the offset to VMMemoryImport index index.

pub fn vmctx_vmglobal_import(&self, index: GlobalIndex) -> u32

Return the offset to VMGlobalImport index index.

pub fn vmctx_vmtable_definition(&self, index: DefinedTableIndex) -> u32

Return the offset to VMTableDefinition index index.

pub fn vmctx_vmmemory_definition(&self, index: DefinedMemoryIndex) -> u32

Return the offset to VMMemoryDefinition index index.

pub fn vmctx_vmglobal_definition(&self, index: DefinedGlobalIndex) -> u32

Return the offset to the VMGlobalDefinition index index.

pub fn vmctx_anyfunc(&self, index: FuncIndex) -> u32

Return the offset to the VMCallerCheckedAnyfunc for the given function index (either imported or defined).

pub fn vmctx_vmfunction_import_body(&self, index: FuncIndex) -> u32

Return the offset to the body field in *const VMFunctionBody index index.

pub fn vmctx_vmfunction_import_vmctx(&self, index: FuncIndex) -> u32

Return the offset to the vmctx field in *const VMFunctionBody index index.

pub fn vmctx_vmtable_import_from(&self, index: TableIndex) -> u32

Return the offset to the from field in VMTableImport index index.

pub fn vmctx_vmtable_definition_base(&self, index: DefinedTableIndex) -> u32

Return the offset to the base field in VMTableDefinition index index.

pub fn vmctx_vmtable_definition_current_elements(
    &self,
    index: DefinedTableIndex
) -> u32

Return the offset to the current_elements field in VMTableDefinition index index.

pub fn vmctx_vmmemory_import_from(&self, index: MemoryIndex) -> u32

Return the offset to the from field in VMMemoryImport index index.

pub fn vmctx_vmmemory_import_vmctx(&self, index: MemoryIndex) -> u32

Return the offset to the vmctx field in VMMemoryImport index index.

pub fn vmctx_vmmemory_definition_base(&self, index: DefinedMemoryIndex) -> u32

Return the offset to the base field in VMMemoryDefinition index index.

pub fn vmctx_vmmemory_definition_current_length(
    &self,
    index: DefinedMemoryIndex
) -> u32

Return the offset to the current_length field in VMMemoryDefinition index index.

pub fn vmctx_vmglobal_import_from(&self, index: GlobalIndex) -> u32

Return the offset to the from field in VMGlobalImport index index.

pub fn vmctx_builtin_function(&self, index: BuiltinFunctionIndex) -> u32

Return the offset to builtin function in VMBuiltinFunctionsArray index index.

impl VMOffsets

Offsets for VMExternData.

pub fn vm_extern_data_ref_count() -> u32

Return the offset for VMExternData::ref_count.

impl VMOffsets

Offsets for VMExternRefActivationsTable.

pub fn vm_extern_ref_activation_table_next(&self) -> u32

Return the offset for VMExternRefActivationsTable::next.

pub fn vm_extern_ref_activation_table_end(&self) -> u32

Return the offset for VMExternRefActivationsTable::end.

Trait Implementations

impl Clone for VMOffsets

fn clone(&self) -> VMOffsets

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VMOffsets

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

Formats the value using the given formatter.

impl From<VMOffsetsFields> for VMOffsets

fn from(fields: VMOffsetsFields) -> VMOffsets

Performs the conversion.

impl Copy for VMOffsets