blob: d5cddb3ed6f05f15cb4026f841b5b4a033f5c4c1 [file] [log] [blame]
// 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.
// Flags: --experimental-wasm-bulk-memory --experimental-wasm-anyref
load('test/mjsunit/wasm/wasm-module-builder.js');
let kTableSize = 5;
let table = new WebAssembly.Table(
{element: 'anyref', initial: kTableSize, maximum: kTableSize});
let builder = new WasmModuleBuilder();
builder.addImportedTable('m', 'table', kTableSize, kTableSize, kWasmAnyRef);
builder.addTable(kWasmAnyFunc, 1000);
builder.addFunction('copy', kSig_v_iii)
.addBody([
kExprGetLocal, 0, kExprGetLocal, 1, kExprGetLocal, 2, kNumericPrefix,
kExprTableCopy, kTableZero, kTableZero
])
.exportFunc();
const instance = builder.instantiate({m: {table: table}});
function resetTable() {
table.set(0, 1000);
table.set(1, 1001);
table.set(2, 1002);
table.set(3, 1003);
table.set(4, 1004);
}
function assertTable(values) {
for (let i = 0; i < kTableSize; ++i) {
assertEquals(table.get(i), values[i]);
}
}
resetTable();
instance.exports.copy(0, 1, 1);
assertTable([1001, 1001, 1002, 1003, 1004]);
resetTable();
instance.exports.copy(0, 1, 2);
assertTable([1001, 1002, 1002, 1003, 1004]);
resetTable();
instance.exports.copy(3, 0, 2);
assertTable([1000, 1001, 1002, 1000, 1001]);
// Non-overlapping, src < dst. Because of src < dst, we copy backwards.
// Therefore the first access already traps, and the table is not changed.
resetTable();
assertTraps(kTrapTableOutOfBounds, () => instance.exports.copy(3, 0, 3));
assertTable([1000, 1001, 1002, 1003, 1004]);
// Non-overlapping, dst < src.
resetTable();
assertTraps(kTrapTableOutOfBounds, () => instance.exports.copy(0, 4, 2));
assertTable([1004, 1001, 1002, 1003, 1004]);
// Overlapping, src < dst. This is required to copy backward, but the first
// access will be out-of-bounds, so nothing changes.
resetTable();
assertTraps(kTrapTableOutOfBounds, () => instance.exports.copy(3, 0, 99));
assertTable([1000, 1001, 1002, 1003, 1004]);
// Overlapping, dst < src.
resetTable();
assertTraps(kTrapTableOutOfBounds, () => instance.exports.copy(0, 1, 99));
assertTable([1001, 1002, 1003, 1004, 1004]);