From 5c2f4ab22367d04753678fbd12d67b4dc2a29010 Mon Sep 17 00:00:00 2001 From: Alon Zakai Date: Mon, 28 Aug 2017 15:21:34 -0700 Subject: Safe heap pass (#1145) Adds --safe-heap which instruments the code to check heap loads and stores for validity (null pointer derefs, within range of valid sbrk memory, and alignment). Used in SAFE_HEAP in emscripten. --- src/ast/import-utils.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 src/ast/import-utils.h (limited to 'src/ast/import-utils.h') diff --git a/src/ast/import-utils.h b/src/ast/import-utils.h new file mode 100644 index 000000000..d12c23182 --- /dev/null +++ b/src/ast/import-utils.h @@ -0,0 +1,41 @@ +/* + * Copyright 2017 WebAssembly Community Group participants + * + * 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_ast_import_h +#define wasm_ast_import_h + +#include "literal.h" +#include "wasm.h" + +namespace wasm { + +namespace ImportUtils { + // find an import by the module.base that is being imported. + // return the internal name + inline Name getImport(Module& wasm, Name module, Name base) { + for (auto& import : wasm.imports) { + if (import->module == module && import->base == base) { + return import->name; + } + } + return Name(); + } +}; + +} // namespace wasm + +#endif // wasm_ast_import_h + -- cgit v1.2.3