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/*
* 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.
*/
//
// Emit a wasm spec interpreter wrapper to run a wasm module with some test
// values, useful for fuzzing.
//
namespace wasm {
static std::string generateSpecWrapper(Module& wasm) {
std::string ret;
for (auto& exp : wasm.exports) {
auto* func = wasm.getFunctionOrNull(exp->value);
if (!func) {
continue; // something exported other than a function
}
ret += std::string("(invoke \"hangLimitInitializer\") (invoke \"") +
exp->name.str + "\" ";
for (const auto& param : func->sig.params) {
// zeros in arguments TODO more?
TODO_SINGLE_COMPOUND(param);
switch (param.getBasic()) {
case Type::i32:
ret += "(i32.const 0)";
break;
case Type::i64:
ret += "(i64.const 0)";
break;
case Type::f32:
ret += "(f32.const 0)";
break;
case Type::f64:
ret += "(f64.const 0)";
break;
case Type::v128:
ret += "(v128.const i32x4 0 0 0 0)";
break;
case Type::funcref:
case Type::externref:
case Type::nullref:
case Type::exnref:
ret += "(ref.null)";
break;
case Type::none:
case Type::unreachable:
WASM_UNREACHABLE("unexpected type");
}
ret += " ";
}
ret += ") ";
}
return ret;
}
} // namespace wasm
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