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// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "test/wasm-api-tests/wasm-api-test.h"
namespace v8 {
namespace internal {
namespace wasm {
using ::wasm::FUNCREF;
using ::wasm::Limits;
using ::wasm::TableType;
namespace {
own<Trap> Negate(const Val args[], Val results[]) {
results[0] = Val(-args[0].i32());
return nullptr;
}
void ExpectTrap(const Func* func, int arg1, int arg2) {
Val args[2] = {Val::i32(arg1), Val::i32(arg2)};
Val results[1];
own<Trap> trap = func->call(args, results);
EXPECT_NE(nullptr, trap);
}
void ExpectResult(int expected, const Func* func, int arg1, int arg2) {
Val args[2] = {Val::i32(arg1), Val::i32(arg2)};
Val results[1];
own<Trap> trap = func->call(args, results);
EXPECT_EQ(nullptr, trap);
EXPECT_EQ(expected, results[0].i32());
}
} // namespace
TEST_F(WasmCapiTest, Table) {
builder()->AllocateIndirectFunctions(2);
builder()->SetMaxTableSize(10);
builder()->AddExport(CStrVector("table"), kExternalTable, 0);
const uint32_t sig_i_i_index = builder()->AddSignature(wasm_i_i_sig());
ValueType reps[] = {kWasmI32, kWasmI32, kWasmI32};
FunctionSig call_sig(1, 2, reps);
byte call_code[] = {
WASM_CALL_INDIRECT1(sig_i_i_index, WASM_GET_LOCAL(1), WASM_GET_LOCAL(0))};
AddExportedFunction(CStrVector("call_indirect"), call_code, sizeof(call_code),
&call_sig);
byte f_code[] = {WASM_GET_LOCAL(0)};
AddExportedFunction(CStrVector("f"), f_code, sizeof(f_code), wasm_i_i_sig());
byte g_code[] = {WASM_I32V_1(42)};
AddExportedFunction(CStrVector("g"), g_code, sizeof(g_code), wasm_i_i_sig());
// Set table[1] to {f}, which has function index 1.
builder()->SetIndirectFunction(1, 1);
Instantiate(nullptr);
Table* table = GetExportedTable(0);
Func* call_indirect = GetExportedFunction(1);
Func* f = GetExportedFunction(2);
Func* g = GetExportedFunction(3);
own<Func> h = Func::make(store(), cpp_i_i_sig(), Negate);
// Try cloning.
EXPECT_TRUE(table->copy()->same(table));
// Check initial table state.
EXPECT_EQ(2u, table->size());
EXPECT_EQ(nullptr, table->get(0));
EXPECT_NE(nullptr, table->get(1));
ExpectTrap(call_indirect, 0, 0);
ExpectResult(7, call_indirect, 7, 1);
ExpectTrap(call_indirect, 0, 2);
// Mutate table.
EXPECT_TRUE(table->set(0, g));
EXPECT_TRUE(table->set(1, nullptr));
EXPECT_FALSE(table->set(2, f));
EXPECT_NE(nullptr, table->get(0));
EXPECT_EQ(nullptr, table->get(1));
ExpectResult(42, call_indirect, 7, 0);
ExpectTrap(call_indirect, 0, 1);
ExpectTrap(call_indirect, 0, 2);
// Grow table.
EXPECT_TRUE(table->grow(3));
EXPECT_EQ(5u, table->size());
EXPECT_TRUE(table->set(2, f));
EXPECT_TRUE(table->set(3, h.get()));
EXPECT_FALSE(table->set(5, nullptr));
EXPECT_NE(nullptr, table->get(2));
EXPECT_NE(nullptr, table->get(3));
EXPECT_EQ(nullptr, table->get(4));
ExpectResult(5, call_indirect, 5, 2);
ExpectResult(-6, call_indirect, 6, 3);
ExpectTrap(call_indirect, 0, 4);
ExpectTrap(call_indirect, 0, 5);
EXPECT_TRUE(table->grow(2, f));
EXPECT_EQ(7u, table->size());
EXPECT_NE(nullptr, table->get(5));
EXPECT_NE(nullptr, table->get(6));
EXPECT_FALSE(table->grow(5));
EXPECT_TRUE(table->grow(3));
EXPECT_TRUE(table->grow(0));
// Create standalone table.
// TODO(wasm+): Once Wasm allows multiple tables, turn this into import.
own<TableType> tabletype =
TableType::make(ValType::make(FUNCREF), Limits(5, 5));
own<Table> table2 = Table::make(store(), tabletype.get());
EXPECT_EQ(5u, table2->size());
EXPECT_FALSE(table2->grow(1));
EXPECT_TRUE(table2->grow(0));
}
} // namespace wasm
} // namespace internal
} // namespace v8