mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-03 18:47:53 +00:00
b40ac20343
This commit implements a framework for creating 'intrinsics' which are
natively implemented functions that are exposable as wasm functions
that can be called or linked against. A simple 8-bit vector product for
flexible vectors is implemented as a proof of concept.
The basic API is:
```
let module = wasmIntrinsicI8VecMul(); // WebAssembly.Module
let memory = new WebAssembly.Module({ initial: pageSize });
let instance = new WebAssembly.Instance(module,
{ "": { memory } });
instance.exports.i8vecmul(dest, src1, src2, len);
```
The implementation is mainly done through `CompileIntrisicModule` which
manually builds a ModuleEnvironment with an imported memory, and a single
exported function which is of the bytecode form:
```
(func (params ...)
local.get 0
...
local.get n
private_intrinsic_opcode
)
```
The private_intrinsic_opcode is implemented as an instance call. An
additional heap base parameter is added which allows quick bounds
checking, similar to Instance::memory32Copy.
A followup will implement the intrinsic for the firefox
translations project.
Differential Revision: https://phabricator.services.mozilla.com/D119919
|
||
|---|---|---|
| .. | ||
| ductwork/debugger | ||
| examples | ||
| public | ||
| src | ||
| xpconnect | ||
| app.mozbuild | ||
| ffi.configure | ||
| moz.build | ||
| moz.configure | ||
| sub.configure | ||