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-rw-r--r-- | js/src/wasm/WasmBuiltinModule.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/js/src/wasm/WasmBuiltinModule.h b/js/src/wasm/WasmBuiltinModule.h new file mode 100644 index 0000000000..42faffec73 --- /dev/null +++ b/js/src/wasm/WasmBuiltinModule.h @@ -0,0 +1,104 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + * + * Copyright 2021 Mozilla Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef wasm_builtin_module_h +#define wasm_builtin_module_h + +#include "mozilla/EnumeratedArray.h" +#include "mozilla/Maybe.h" +#include "mozilla/Span.h" + +#include "wasm/WasmBuiltins.h" +#include "wasm/WasmCompileArgs.h" +#include "wasm/WasmConstants.h" +#include "wasm/WasmSerialize.h" +#include "wasm/WasmTypeDecls.h" +#include "wasm/WasmTypeDef.h" + +namespace js { +namespace wasm { + +struct MOZ_STACK_CLASS BuiltinModuleInstances { + explicit BuiltinModuleInstances(JSContext* cx) + : selfTest(cx), intGemm(cx), jsString(cx) {} + + Rooted<JSObject*> selfTest; + Rooted<JSObject*> intGemm; + Rooted<JSObject*> jsString; + + MutableHandle<JSObject*> operator[](BuiltinModuleId module) { + switch (module) { + case BuiltinModuleId::SelfTest: { + return &selfTest; + } + case BuiltinModuleId::IntGemm: { + return &intGemm; + } + case BuiltinModuleId::JSString: { + return &jsString; + } + default: { + MOZ_CRASH(); + } + } + } +}; + +// An builtin module func is a natively implemented function that may be +// compiled into a 'builtin module', which may be instantiated with a provided +// memory yielding an exported WebAssembly function wrapping the builtin module. +struct BuiltinModuleFunc { + // The name of the func as it is exported + const char* exportName; + // The params taken by the func. + mozilla::Span<const ValType> params; + // The optional result returned by the func. + mozilla::Maybe<const ValType> result; + // The signature of the builtin that implements the func + const SymbolicAddressSignature& signature; + // Whether this function takes a pointer to the memory base as a hidden final + // parameter. + bool usesMemory; + + // Allocate a FuncType for this func, returning false for OOM + bool funcType(FuncType* type) const; + + // Get the BuiltinModuleFunc for an BuiltinModuleFuncId. BuiltinModuleFuncId + // must be validated. + static const BuiltinModuleFunc& getFromId(BuiltinModuleFuncId id); +}; + +Maybe<BuiltinModuleId> ImportMatchesBuiltinModule( + mozilla::Span<const char> importName, BuiltinModuleIds enabledBuiltins); +Maybe<const BuiltinModuleFunc*> ImportMatchesBuiltinModuleFunc( + mozilla::Span<const char> importName, BuiltinModuleId module); + +// Compile and return the builtin module for a particular +// builtin module. +bool CompileBuiltinModule(JSContext* cx, BuiltinModuleId module, + MutableHandle<WasmModuleObject*> result); + +// Compile, instantiate and return the builtin module instance for a particular +// builtin module. +bool InstantiateBuiltinModule(JSContext* cx, BuiltinModuleId module, + MutableHandle<JSObject*> result); + +} // namespace wasm +} // namespace js + +#endif // wasm_builtin_module_h |