[][src]Crate wasmer_clif_fork_wasm

Performs translation from a wasm module in binary format to the in-memory form of Cranelift IR. More particularly, it translates the code of all the functions bodies and interacts with an environment implementing the ModuleEnvironment trait to deal with tables, globals and linear memory.

The crate provides a DummyEnvironment struct that will allow to translate the code of the functions but will fail at execution.

The main function of this module is translate_module.

Macros

wasm_unsupported

Return an Err(WasmError::Unsupported(msg)) where msg the string built by calling format! on the arguments to this macro.

Structs

DefinedFuncIndex

Index type of a defined function inside the WebAssembly module.

DefinedGlobalIndex

Index type of a defined global inside the WebAssembly module.

DefinedMemoryIndex

Index type of a defined memory inside the WebAssembly module.

DefinedTableIndex

Index type of a defined table inside the WebAssembly module.

DummyEnvironment

This ModuleEnvironment implementation is a "naïve" one, doing essentially nothing and emitting placeholders when forced to. Don't try to execute code translated for this environment, essentially here for translation debug purposes.

FuncIndex

Index type of a function (imported or defined) inside the WebAssembly module.

FuncTranslationState

Contains information passed along during a function's translation and that records:

FuncTranslator

WebAssembly to Cranelift IR function translator.

Global

WebAssembly global.

GlobalIndex

Index type of a global variable (imported or defined) inside the WebAssembly module.

Memory

WebAssembly linear memory.

MemoryIndex

Index type of a linear memory (imported or defined) inside the WebAssembly module.

ModuleTranslationState

Contains information decoded from the Wasm module that must be referenced during each Wasm function's translation.

SignatureIndex

Index type of a signature (imported or defined) inside the WebAssembly module.

Table

WebAssembly table.

TableIndex

Index type of a table (imported or defined) inside the WebAssembly module.

Enums

GlobalInit

Globals are initialized via the const operators or by referring to another import.

GlobalVariable

The value of a WebAssembly global variable.

ReturnMode

How to return from functions.

TableElementType

WebAssembly table element. Can be a function or a scalar type.

WasmError

A WebAssembly translation error.

Constants

VERSION

Version number of this crate.

Traits

FuncEnvironment

Environment affecting the translation of a single WebAssembly function.

ModuleEnvironment

An object satisfying the ModuleEnvironment trait can be passed as argument to the translate_module function. These methods should not be called by the user, they are only for cranelift-wasm internal use.

TargetEnvironment

Environment affecting the translation of a WebAssembly.

Functions

declare_locals

Declare count local variables of the same type, starting from next_local.

get_vmctx_value_label

Special VMContext value label. It is tracked as 0xffff_fffe label.

translate_module

Translate a sequence of bytes forming a valid Wasm binary into a list of valid Cranelift IR Function.

translate_operator

Translates wasm operators into Cranelift IR instructions. Returns true if it inserted a return.

Type Definitions

WasmResult

A convenient alias for a Result that uses WasmError as the error type.