1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/*
* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibJS/Runtime/Object.h>
#include <LibWasm/AbstractMachine/AbstractMachine.h>
#include <LibWeb/Forward.h>
#include <LibWeb/WebAssembly/WebAssemblyInstanceObjectPrototype.h>
namespace Web::Bindings {
class WebAssemblyMemoryObject;
Result<size_t, JS::Value> parse_module(JS::GlobalObject& global_object, JS::Object* buffer);
JS::NativeFunction* create_native_function(JS::GlobalObject& global_object, Wasm::FunctionAddress address, String const& name);
JS::Value to_js_value(JS::GlobalObject& global_object, Wasm::Value& wasm_value);
Optional<Wasm::Value> to_webassembly_value(JS::GlobalObject& global_object, JS::Value value, const Wasm::ValueType& type);
class WebAssemblyObject final : public JS::Object {
JS_OBJECT(WebAssemblyObject, JS::Object);
public:
explicit WebAssemblyObject(JS::GlobalObject&);
virtual void initialize(JS::GlobalObject&) override;
virtual ~WebAssemblyObject() override = default;
virtual void visit_edges(Cell::Visitor&) override;
static Result<size_t, JS::Value> instantiate_module(Wasm::Module const&, JS::VM&, JS::GlobalObject&);
struct CompiledWebAssemblyModule {
explicit CompiledWebAssemblyModule(Wasm::Module&& module)
: module(move(module))
{
}
Wasm::Module module;
};
// FIXME: These should just be members of the module (instance) object,
// but the module needs to stick around while its instance is alive
// so ideally this would be a refcounted object, shared between
// WebAssemblyModuleObject's and WebAssemblyInstantiatedModuleObject's.
struct ModuleCache {
HashMap<Wasm::FunctionAddress, JS::FunctionObject*> function_instances;
HashMap<Wasm::MemoryAddress, WebAssemblyMemoryObject*> memory_instances;
};
struct GlobalModuleCache {
HashMap<Wasm::FunctionAddress, JS::NativeFunction*> function_instances;
};
static NonnullOwnPtrVector<CompiledWebAssemblyModule> s_compiled_modules;
static NonnullOwnPtrVector<Wasm::ModuleInstance> s_instantiated_modules;
static Vector<ModuleCache> s_module_caches;
static GlobalModuleCache s_global_cache;
static Wasm::AbstractMachine s_abstract_machine;
private:
JS_DECLARE_OLD_NATIVE_FUNCTION(validate);
JS_DECLARE_OLD_NATIVE_FUNCTION(compile);
JS_DECLARE_OLD_NATIVE_FUNCTION(instantiate);
};
class WebAssemblyMemoryObject final : public JS::Object {
JS_OBJECT(WebAssemblyMemoryObject, JS::Object);
public:
explicit WebAssemblyMemoryObject(JS::GlobalObject&, Wasm::MemoryAddress);
virtual ~WebAssemblyMemoryObject() override = default;
auto address() const { return m_address; }
private:
Wasm::MemoryAddress m_address;
};
}
|
