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/*
* Copyright 2018 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.
*/
#include "gtest/gtest.h"
#include <memory>
#include "src/binary-reader.h"
#include "src/binary-reader-interp.h"
#include "src/cast.h"
#include "src/error-handler.h"
#include "src/interp.h"
#include "src/make-unique.h"
using namespace wabt;
namespace {
class TrapHostImportDelegate : public interp::HostImportDelegate {
public:
Result ImportFunc(interp::FuncImport* import,
interp::Func* func,
interp::FuncSignature* func_sig,
const ErrorCallback& callback) override {
cast<interp::HostFunc>(func)->callback = TrapCallback;
return Result::Ok;
}
Result ImportTable(interp::TableImport* import,
interp::Table* table,
const ErrorCallback& callback) override {
return Result::Error;
}
Result ImportMemory(interp::MemoryImport* import,
interp::Memory* memory,
const ErrorCallback& callback) override {
return Result::Error;
}
Result ImportGlobal(interp::GlobalImport* import,
interp::Global* global,
const ErrorCallback& callback) override {
return Result::Error;
}
private:
static interp::Result TrapCallback(const interp::HostFunc* func,
const interp::FuncSignature* sig,
Index num_args,
interp::TypedValue* args,
Index num_results,
interp::TypedValue* out_results,
void* user_data) {
return interp::Result::TrapHostTrapped;
}
};
class HostTrapTest : public ::testing::Test {
protected:
virtual void SetUp() {
interp::HostModule* host_module = env_.AppendHostModule("host");
host_module->import_delegate = MakeUnique<TrapHostImportDelegate>();
executor_ = MakeUnique<interp::Executor>(&env_);
}
virtual void TearDown() {}
interp::ExecResult LoadModuleAndRunStartFunction(
const std::vector<uint8_t>& data) {
ErrorHandlerFile error_handler(Location::Type::Binary);
interp::DefinedModule* module = nullptr;
ReadBinaryOptions options;
Result result = ReadBinaryInterp(&env_, data.data(), data.size(), options,
&error_handler, &module);
EXPECT_EQ(Result::Ok, result);
if (result == Result::Ok) {
return executor_->RunStartFunction(module);
} else {
return {};
}
}
interp::Environment env_;
std::unique_ptr<interp::Executor> executor_;
};
} // end of anonymous namespace
TEST_F(HostTrapTest, Call) {
// (import "host" "a" (func $0))
// (func $1 call $0)
// (start $1)
std::vector<uint8_t> data = {
0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x04, 0x01,
0x60, 0x00, 0x00, 0x02, 0x0a, 0x01, 0x04, 0x68, 0x6f, 0x73, 0x74,
0x01, 0x61, 0x00, 0x00, 0x03, 0x02, 0x01, 0x00, 0x08, 0x01, 0x01,
0x0a, 0x06, 0x01, 0x04, 0x00, 0x10, 0x00, 0x0b,
};
ASSERT_EQ(interp::Result::TrapHostTrapped,
LoadModuleAndRunStartFunction(data).result);
}
TEST_F(HostTrapTest, CallIndirect) {
// (import "host" "a" (func $0))
// (table anyfunc (elem $0))
// (func $1 i32.const 0 call_indirect)
// (start $1)
std::vector<uint8_t> data = {
0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x04, 0x01, 0x60,
0x00, 0x00, 0x02, 0x0a, 0x01, 0x04, 0x68, 0x6f, 0x73, 0x74, 0x01, 0x61,
0x00, 0x00, 0x03, 0x02, 0x01, 0x00, 0x04, 0x05, 0x01, 0x70, 0x01, 0x01,
0x01, 0x08, 0x01, 0x01, 0x09, 0x07, 0x01, 0x00, 0x41, 0x00, 0x0b, 0x01,
0x00, 0x0a, 0x09, 0x01, 0x07, 0x00, 0x41, 0x00, 0x11, 0x00, 0x00, 0x0b,
};
ASSERT_EQ(interp::Result::TrapHostTrapped,
LoadModuleAndRunStartFunction(data).result);
}
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