Struct VMOffsets 

pub struct VMOffsets {

    pointer_size: u8,
    num_imported_functions: u32,
    num_imported_tables: u32,
    num_imported_memories: u32,
    num_tag_ids: u32,
    num_imported_globals: u32,
    num_local_tables: u32,
    num_local_memories: u32,
    num_local_globals: u32,
    local_fixed_funcref_table_offsets: Vec<Option<u32>>,
    size_of_local_fixed_funcref_tables: u32,
    vmctx_imported_functions_begin: u32,
    vmctx_imported_tables_begin: u32,
    vmctx_imported_memories_begin: u32,
    vmctx_tag_ids_begin: u32,
    vmctx_imported_globals_begin: u32,
    vmctx_tables_begin: u32,
    vmctx_fixed_funcref_tables_begin: u32,
    vmctx_memories_begin: u32,
    vmctx_globals_begin: u32,
    vmctx_builtin_functions_begin: u32,
    vmctx_trap_handler_begin: u32,
    vmctx_gas_limiter_pointer: u32,
    vmctx_stack_limit_begin: u32,
    vmctx_stack_limit_initial_begin: u32,
    size_of_vmctx: u32,
}

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_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_tag_ids: u32

The number of tags in the module.

num_imported_globals: u32

The number of imported globals in the module.

num_local_tables: u32

The number of defined tables in the module.

num_local_memories: u32

The number of defined memories in the module.

num_local_globals: u32

The number of defined globals in the module.

local_fixed_funcref_table_offsets: Vec<Option<u32>>

Relative offsets of inline VMCallerCheckedAnyfunc arrays for local fixed funcref tables. Non-fixed tables do not have inline storage.

size_of_local_fixed_funcref_tables: u32

Total size in bytes of all inline fixed funcref table storage in VMContext.

vmctx_imported_functions_begin: u32

vmctx_imported_tables_begin: u32

vmctx_imported_memories_begin: u32

vmctx_tag_ids_begin: u32

vmctx_imported_globals_begin: u32

vmctx_tables_begin: u32

vmctx_fixed_funcref_tables_begin: u32

vmctx_memories_begin: u32

vmctx_globals_begin: u32

vmctx_builtin_functions_begin: u32

vmctx_trap_handler_begin: u32

vmctx_gas_limiter_pointer: u32

vmctx_stack_limit_begin: u32

vmctx_stack_limit_initial_begin: u32

size_of_vmctx: u32

Implementations

impl VMOffsets

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

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

pub fn new_for_trampolines(pointer_size: u8) -> Self

Return a new VMOffsets instance, for a given pointer size skipping the ModuleInfo.

Note: This should only when generating code for trampolines.

pub fn num_local_tables(&self) -> u32

Number of local tables defined in the module

pub fn num_local_memories(&self) -> u32

Number of local memories defined in the module

pub fn num_local_globals(&self) -> u32

Number of local globals defined in the module

fn precompute(&mut self)

impl VMOffsets

Offsets for VMFunctionImport.

pub const fn vmfunction_import_body(&self) -> u8

The offset of the body field.

pub const fn vmfunction_import_vmctx(&self) -> u8

The offset of the vmctx field.

pub const fn vmfunction_import_handle(&self) -> u8

The offset of the handle field.

pub const fn vmfunction_import_include_m0_param(&self) -> u8

The offset of the include_m0_param field.

pub const fn size_of_vmfunction_import(&self) -> u8

Return the size of VMFunctionImport.

impl VMOffsets

Offsets for VMDynamicFunctionContext.

pub const fn vmdynamicfunction_import_context_address(&self) -> u8

The offset of the address field.

pub const fn vmdynamicfunction_import_context_ctx(&self) -> u8

The offset of the ctx field.

pub const fn size_of_vmdynamicfunction_import_context(&self) -> u8

Return the size of VMDynamicFunctionContext.

impl VMOffsets

Offsets for *const VMFunctionBody.

pub const fn size_of_vmfunction_body_ptr(&self) -> u8

The size of the current_elements field.

impl VMOffsets

Offsets for VMTableImport.

pub const fn vmtable_import_definition(&self) -> u8

The offset of the definition field.

pub const fn vmtable_import_handle(&self) -> u8

The offset of the handle field.

pub const fn size_of_vmtable_import(&self) -> u8

Return the size of VMTableImport.

impl VMOffsets

Offsets for VMTableDefinition.

pub const fn vmtable_definition_base(&self) -> u8

The offset of the base field.

pub const fn vmtable_definition_current_elements(&self) -> u8

The offset of the current_elements field.

pub const fn size_of_vmtable_definition_current_elements(&self) -> u8

The size of the current_elements field.

pub const fn size_of_vmtable_definition(&self) -> u8

Return the size of VMTableDefinition.

impl VMOffsets

Offsets for VMMemoryImport.

pub const fn vmmemory_import_definition(&self) -> u8

The offset of the from field.

pub const fn vmmemory_import_handle(&self) -> u8

The offset of the handle field.

pub const fn size_of_vmmemory_import(&self) -> u8

Return the size of VMMemoryImport.

impl VMOffsets

Offsets for VMMemoryDefinition.

pub const fn vmmemory_definition_base(&self) -> u8

The offset of the base field.

pub const fn vmmemory_definition_current_length(&self) -> u8

The offset of the current_length field.

pub const fn size_of_vmmemory_definition_current_length(&self) -> u8

The size of the current_length field.

pub const fn size_of_vmmemory_definition(&self) -> u8

Return the size of VMMemoryDefinition.

impl VMOffsets

Offsets for VMGlobalImport.

pub const fn vmglobal_import_definition(&self) -> u8

The offset of the definition field.

pub const fn vmglobal_import_handle(&self) -> u8

The offset of the handle field.

pub const fn size_of_vmglobal_import(&self) -> u8

Return the size of VMGlobalImport.

impl VMOffsets

Offsets for a VMGlobalDefinition used as a local global.

pub const fn size_of_vmglobal_local(&self) -> u8

Return the size of a VMGlobalDefinition.

Local globals are stored inline in the VMContext, and the definition is a 16-byte RawValue aligned to 16.

impl VMOffsets

Offsets for VMCallerCheckedAnyfunc.

pub const fn vmcaller_checked_anyfunc_func_ptr(&self) -> u8

The offset of the func_ptr field.

pub const fn vmcaller_checked_anyfunc_signature_hash(&self) -> u8

The offset of the VMSignatureHash field.

pub const fn vmcaller_checked_anyfunc_vmctx(&self) -> u8

The offset of the vmctx field.

pub const fn vmcaller_checked_anyfunc_call_trampoline(&self) -> u8

The offset of the call_trampoline field.

pub const fn size_of_vmcaller_checked_anyfunc(&self) -> u8

Return the size of VMCallerCheckedAnyfunc.

impl VMOffsets

Offsets for VMFuncRef.

pub const fn vm_funcref_anyfunc_ptr(&self) -> u8

The offset to the pointer to the anyfunc inside the ref.

pub const fn size_of_vm_funcref(&self) -> u8

Return the size of VMFuncRef.

impl VMOffsets

Offsets for VMSharedTagIndex.

pub const fn size_of_vmshared_tag_index(&self) -> u8

Return the size of VMSharedTagIndex.

impl VMOffsets

Offsets for VMContext.

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_tag_ids_begin(&self) -> u32

The offset of the tags array.

pub fn vmctx_tables_begin(&self) -> u32

The offset of the tables array.

pub fn vmctx_fixed_funcref_tables_begin(&self) -> u32

The offset of the inline fixed funcref table storage.

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_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_vmfunction_import(&self, index: FunctionIndex) -> 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: LocalTableIndex) -> u32

Return the offset to VMTableDefinition index index.

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

Return the offset to VMMemoryDefinition index index.

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

Return the offset to the VMGlobalDefinition index index.

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

Return the offset to the body field in *const VMFunctionBody index index. Remember updating precompute upon changes

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

Return the offset to the vmctx field in *const VMFunctionBody index index. Remember updating precompute upon changes

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

Return the offset to the definition field in VMTableImport index index. Remember updating precompute upon changes

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

Return the offset to the base field in VMTableDefinition index index. Remember updating precompute upon changes

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

Return the offset to the current_elements field in VMTableDefinition index index. Remember updating precompute upon changes

pub fn vmctx_fixed_funcref_table_anyfuncs( &self, index: LocalTableIndex, ) -> Option<u32>

Return the offset to the inline VMCallerCheckedAnyfunc array for a local fixed funcref table.

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

Return the offset to the from field in VMMemoryImport index index. Remember updating precompute upon changes

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

Return the offset to the vmctx field in VMMemoryImport index index. Remember updating precompute upon changes

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

Return the offset to the base field in VMMemoryDefinition index index. Remember updating precompute upon changes

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

Return the offset to the current_length field in VMMemoryDefinition index index. Remember updating precompute upon changes

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

Return the offset to the from field in VMGlobalImport index index. Remember updating precompute upon changes

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

Return the offset to builtin function in VMBuiltinFunctionsArray index index. Remember updating precompute upon changes

Trait Implementations

impl Clone for VMOffsets

fn clone(&self) -> VMOffsets

Returns a duplicate 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.