Crate wasmtime_environ

Standalone environment for WebAssembly using Cranelift. Provides functions to translate get_global, set_global, memory.size, memory.grow, call_indirect that hardcode in the translation the base addresses of regions of memory that will hold the globals, tables and linear memories.

Re-exports

pub use crate::cranelift::Cranelift;

Modules

cranelift	Support for compiling with Cranelift.
entity
ir
isa
settings
wasm

Structs

BuiltinFunctionIndex	An index type for builtin functions.
Compilation	The result of compiling a WebAssembly module's functions.
CompiledFunction	Compiled function: machine code body, jump table offsets, and unwind information.
CompiledFunctionUnwindInfoReloc	Relocation entry for unwind info.
DataInitializer	A data initializer for linear memory.
DataInitializerLocation	A memory index and offset within that memory where a data initialization should is to be performed.
FunctionAddressMap	Function and its instructions addresses mappings.
FunctionBodyData	Contains function data: byte code and its offset in the module.
InstructionAddressMap	Single source location to generated address mapping.
MemoryPlan	A WebAssembly linear memory description along with our chosen style for implementing it.
Module	A translated WebAssembly module, excluding the function bodies and memory initializers.
ModuleEnvironment	Object containing the standalone environment information.
ModuleSyncString	Allows module strings to be cached as reused across multiple threads. Useful for debug/trace information.
ModuleTranslation	The result of translating via ModuleEnvironment. Function bodies are not yet translated, and data initializers have not yet been copied out of the original buffer.
ModuleVmctxInfo	Module vmctx related info.
Relocation	A record of a relocation to perform.
TableElements	A WebAssembly table initializer.
TablePlan	A WebAssembly table description along with our chosen style for implementing it.
TargetSharedSignatureIndex	Target specific type for shared signature index.
TrapInformation	Information about trap.
Tunables	Tunable parameters for WebAssembly compilation.
VMOffsets	This class computes offsets to fields within VMContext and other related structs that JIT code accesses directly.

Enums

CompileError	An error while compiling WebAssembly to machine code.
CompiledFunctionUnwindInfo	Compiled function unwind information.
Export	An entity to export.
MemoryStyle	Implemenation styles for WebAssembly linear memory.
RelocationTarget	Destination function. Can be either user function or some special one, like memory.grow.
TableStyle	Implemenation styles for WebAssembly tables.

Constants

VERSION	Version number of this crate.
WASM_MAX_PAGES	The number of pages we can have before we run out of byte index space.
WASM_PAGE_SIZE	WebAssembly page sizes are defined to be 64KiB.

Traits

Compiler

An implementation of a compiler from parsed WebAssembly module to native code.

Functions

cache_create_new_config	Creates a new configuration file at specified path, or default path if None is passed. Fails if file already exists.
cache_init	Initializes the cache system. Should be called exactly once, and before using the cache system. Otherwise it can panic. Returns list of errors. If empty, initialization succeeded.
translate_signature	Add environment-specific function parameters.

Type Definitions

ModuleAddressMap	Module functions addresses mappings.
Relocations	Relocations to apply to function bodies.
Traps	Information about traps associated with the functions where the traps are placed.
ValueLabelsRanges	Value ranges for functions.