Expand description
Runtime library support for Wasmer.
Modules
Runtime library calls.
Structs
This iterator allows us to iterate over the exports
and offer nice API ergonomics over it.
A safe wrapper around
VMFunctionBody.Resolved import pointers.
This iterator allows us to iterate over the imports
and offer nice API ergonomics over it.
This is an intermediate type that manages the raw allocation and
metadata when creating an [
Instance].A handle holding an
Instance of a WebAssembly module.Internal handle to an object owned by the current context.
A simple struct consisting of a page-aligned pointer to page-aligned
and initially-zeroed memory and a length.
A translated WebAssembly module, excluding the function bodies and
memory initializers.
Pointers to section data.
WebAssembly requires that the caller and callee signatures in an indirect
call must match. To implement this efficiently, keep a registry of all
signatures, shared by all instances, so that call sites can just do an
index comparison.
Handle to an object managed by a context.
Unique ID to identify a context.
Set of objects managed by a context.
Target specific type for shared signature index.
An index type for builtin functions.
The VM caller-checked “anyfunc” record, for caller-side signature checking.
It consists of the actual function pointer and a signature id to be checked
by the caller.
The VM “context”, which is pointed to by the
vmctx arg in the compiler.
This has information about globals, memories, tables, and other runtime
state associated with the current instance.The
VMDynamicFunctionContext is the context that dynamic
functions will receive when called (rather than vmctx).
A dynamic function is a function for which we don’t know the signature
until runtime.Underlying object referenced by a
VMExternRef.Represents an opaque reference to any data within WebAssembly.
A function reference. A single word that points to metadata about a function.
A function export value.
A placeholder byte-sized type which is just used to provide some amount of type
safety when dealing with pointers to JIT-compiled function bodies. Note that it’s
deliberately not Copy, as we shouldn’t be carelessly copying function body bytes
around.
Underlying FunctionEnvironment used by a
VMFunction.An imported function.
A Global instance
The storage for a WebAssembly global defined within the instance.
The fields compiled code needs to access to utilize a WebAssembly global
variable imported from another instance.
Represents linear memory that can be either owned or shared
The fields compiled code needs to access to utilize a WebAssembly linear
memory defined within the instance, namely the start address and the
size in bytes.
The fields compiled code needs to access to utilize a WebAssembly linear
memory imported from another instance.
This class computes offsets to fields within VMContext and other
related structs that JIT code accesses directly.
A linear memory instance.
A shared linear memory instance.
An index into the shared signature registry, usable for checking signatures
at indirect calls.
A table instance.
The fields compiled code needs to access to utilize a WebAssembly table
defined within the instance.
The fields compiled code needs to access to utilize a WebAssembly table
imported from another instance.
Enums
The name of a runtime library routine.
Data used by the generated code is generally located inline within the
VMContext for items defined in an instance. Host-defined objects are
allocated separately and owned directly by the context.Error type describing things that can go wrong when operating on Wasm Memories.
Implementation styles for WebAssembly linear memory.
A reference stored in a table. Can be either an externref or a funcref.
Implementation styles for WebAssembly tables.
Stores trace message with backtrace.
A trap code describing the reason for a trap.
The value of an export passed from one instance to another.
A function kind is a calling convention into and out of wasm code.
Constants
The probestack for 32bit Windows when compiled with MSVC (note the singular underscore)
Version number of this crate.
Traits
Represents memory that is used by the WebAsssembly module
A package of functionality needed by
catch_traps to figure out what to do
when handling a trap.Functions
Catches any wasm traps that happen within the execution of
closure,
returning them as a Result.This function is required to be called before any WebAssembly is entered.
This will configure global state such as signal handlers to prepare the
process to receive wasm traps.
When executing on the Wasm stack, temporarily switch back to the host stack
to perform an operation that should not be constrainted by the Wasm stack
limits.
Raises a trap from inside library code immediately.
Raises a user-defined trap immediately.
Carries a Rust panic across wasm code and resumes the panic on the other
side.
Call the wasm function pointed to by
callee.Type Definitions
Function which may handle custom signals while processing traps.
Unions
Union representing the first parameter passed when calling a function.