v8/test/mjsunit/wasm/bulk-memory.js
Ben Smith 787d83c57c [wasm] Update bulk-memory instruction immediates
* There are now two indexes for table.copy and memory.copy, one for the
source and the one for the destination table/memory. (see
https://github.com/WebAssembly/bulk-memory-operations/pull/43)

* Reverse the order of the table.init and memory.init indexes, so the
segment index is first and the table/memory index is second. (see
https://github.com/WebAssembly/bulk-memory-operations/pull/45)

Change-Id: I1781edd4200a7b693e3d0814999e6292aafa58d3
Reviewed-on: https://chromium-review.googlesource.com/c/1446149
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59259}
2019-01-31 18:24:17 +00:00

353 lines
11 KiB
JavaScript

// Copyright 2018 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
load("test/mjsunit/wasm/wasm-module-builder.js");
(function TestPassiveDataSegment() {
const builder = new WasmModuleBuilder();
builder.addMemory(1, 1, false);
builder.addPassiveDataSegment([0, 1, 2]);
builder.addPassiveDataSegment([3, 4]);
// Should not throw.
builder.instantiate();
})();
(function TestPassiveElementSegment() {
const builder = new WasmModuleBuilder();
builder.addFunction('f', kSig_v_v).addBody([]);
builder.setTableBounds(1, 1);
builder.addPassiveElementSegment([0, 0, 0]);
builder.addPassiveElementSegment([0, 0]);
// Should not throw.
builder.instantiate();
})();
function assertBufferContents(buf, expected) {
for (let i = 0; i < expected.length; ++i) {
assertEquals(expected[i], buf[i]);
}
for (let i = expected.length; i < buf.length; ++i) {
assertEquals(0, buf[i]);
}
}
function getMemoryInit(mem, segment_data) {
const builder = new WasmModuleBuilder();
builder.addImportedMemory("", "mem", 0);
builder.addPassiveDataSegment(segment_data);
builder.addFunction('init', kSig_v_iii)
.addBody([
kExprGetLocal, 0, // Dest.
kExprGetLocal, 1, // Source.
kExprGetLocal, 2, // Size in bytes.
kNumericPrefix, kExprMemoryInit,
0, // Data segment index.
0, // Memory index.
])
.exportAs('init');
return builder.instantiate({'': {mem}}).exports.init;
}
(function TestMemoryInit() {
const mem = new WebAssembly.Memory({initial: 1});
const memoryInit = getMemoryInit(mem, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
const u8a = new Uint8Array(mem.buffer);
// All zeroes.
assertBufferContents(u8a, []);
// Copy all bytes from data segment 0, to memory at [10, 20).
memoryInit(10, 0, 10);
assertBufferContents(u8a, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
// Copy bytes in range [5, 10) from data segment 0, to memory at [0, 5).
memoryInit(0, 5, 5);
assertBufferContents(u8a, [5, 6, 7, 8, 9, 0, 0, 0, 0, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
})();
(function TestMemoryInitOutOfBounds() {
const mem = new WebAssembly.Memory({initial: 1});
// Create a data segment that has a length of kPageSize.
const memoryInit = getMemoryInit(mem, new Array(kPageSize));
// OK, copy the full data segment to memory.
memoryInit(0, 0, kPageSize);
// Source range must not be out of bounds.
assertTraps(kTrapMemOutOfBounds, () => memoryInit(0, 1, kPageSize));
assertTraps(kTrapMemOutOfBounds, () => memoryInit(0, 1000, kPageSize));
assertTraps(kTrapMemOutOfBounds, () => memoryInit(0, kPageSize, 1));
// Destination range must not be out of bounds.
assertTraps(kTrapMemOutOfBounds, () => memoryInit(1, 0, kPageSize));
assertTraps(kTrapMemOutOfBounds, () => memoryInit(1000, 0, kPageSize));
assertTraps(kTrapMemOutOfBounds, () => memoryInit(kPageSize, 0, 1));
// Make sure bounds aren't checked with 32-bit wrapping.
assertTraps(kTrapMemOutOfBounds, () => memoryInit(1, 1, -1));
mem.grow(1);
// Works properly after grow.
memoryInit(kPageSize, 0, 1000);
// Traps at new boundary.
assertTraps(
kTrapMemOutOfBounds, () => memoryInit(kPageSize + 1, 0, kPageSize));
})();
(function TestMemoryInitOnActiveSegment() {
const builder = new WasmModuleBuilder();
builder.addMemory(1);
builder.addPassiveDataSegment([1, 2, 3]);
builder.addDataSegment(0, [4, 5, 6]);
builder.addFunction('init', kSig_v_v)
.addBody([
kExprI32Const, 0, // Dest.
kExprI32Const, 0, // Source.
kExprI32Const, 0, // Size in bytes.
kNumericPrefix, kExprMemoryInit,
1, // Data segment index.
0, // Memory index.
])
.exportAs('init');
// Instantiation succeeds, because using memory.init with an active segment
// is a trap, not a validation error.
const instance = builder.instantiate();
assertTraps(kTrapDataSegmentDropped, () => instance.exports.init());
})();
(function TestMemoryInitOnDroppedSegment() {
const builder = new WasmModuleBuilder();
builder.addMemory(1);
builder.addPassiveDataSegment([1, 2, 3]);
builder.addFunction('init', kSig_v_v)
.addBody([
kExprI32Const, 0, // Dest.
kExprI32Const, 0, // Source.
kExprI32Const, 0, // Size in bytes.
kNumericPrefix, kExprMemoryInit,
0, // Data segment index.
0, // Memory index.
])
.exportAs('init');
builder.addFunction('drop', kSig_v_v)
.addBody([
kNumericPrefix, kExprMemoryDrop,
0, // Data segment index.
])
.exportAs('drop');
// Instantiation succeeds, because using memory.init with an active segment
// is a trap, not a validation error.
const instance = builder.instantiate();
// OK, segment hasn't been dropped.
instance.exports.init();
instance.exports.drop();
// After segment has been dropped, memory.init and memory.drop fail.
assertTraps(kTrapDataSegmentDropped, () => instance.exports.init());
assertTraps(kTrapDataSegmentDropped, () => instance.exports.drop());
})();
(function TestMemoryDropOnActiveSegment() {
const builder = new WasmModuleBuilder();
builder.addMemory(1);
builder.addPassiveDataSegment([1, 2, 3]);
builder.addDataSegment(0, [4, 5, 6]);
builder.addFunction('drop', kSig_v_v)
.addBody([
kNumericPrefix, kExprMemoryDrop,
1, // Data segment index.
])
.exportAs('drop');
const instance = builder.instantiate();
assertTraps(kTrapDataSegmentDropped, () => instance.exports.drop());
})();
function getMemoryCopy(mem) {
const builder = new WasmModuleBuilder();
builder.addImportedMemory("", "mem", 0);
builder.addFunction("copy", kSig_v_iii).addBody([
kExprGetLocal, 0, // Dest.
kExprGetLocal, 1, // Source.
kExprGetLocal, 2, // Size in bytes.
kNumericPrefix, kExprMemoryCopy, 0, 0,
]).exportAs("copy");
return builder.instantiate({'': {mem}}).exports.copy;
}
(function TestMemoryCopy() {
const mem = new WebAssembly.Memory({initial: 1});
const memoryCopy = getMemoryCopy(mem);
const u8a = new Uint8Array(mem.buffer);
u8a.set([0, 11, 22, 33, 44, 55, 66, 77]);
memoryCopy(10, 1, 8);
assertBufferContents(u8a, [0, 11, 22, 33, 44, 55, 66, 77, 0, 0,
11, 22, 33, 44, 55, 66, 77]);
// Copy 0 bytes does nothing.
memoryCopy(10, 1, 0);
assertBufferContents(u8a, [0, 11, 22, 33, 44, 55, 66, 77, 0, 0,
11, 22, 33, 44, 55, 66, 77]);
})();
(function TestMemoryCopyOverlapping() {
const mem = new WebAssembly.Memory({initial: 1});
const memoryCopy = getMemoryCopy(mem);
const u8a = new Uint8Array(mem.buffer);
u8a.set([10, 20, 30]);
// Copy from [0, 3] -> [2, 5]. The copy must not overwrite 30 before copying
// it (i.e. cannot copy forward in this case).
memoryCopy(2, 0, 3);
assertBufferContents(u8a, [10, 20, 10, 20, 30]);
// Copy from [2, 5] -> [0, 3]. The copy must not write the first 10 (i.e.
// cannot copy backward in this case).
memoryCopy(0, 2, 3);
assertBufferContents(u8a, [10, 20, 30, 20, 30]);
})();
(function TestMemoryCopyOutOfBounds() {
const mem = new WebAssembly.Memory({initial: 1});
const memoryCopy = getMemoryCopy(mem);
memoryCopy(0, 0, kPageSize);
// Source range must not be out of bounds.
assertTraps(kTrapMemOutOfBounds, () => memoryCopy(0, 1, kPageSize));
assertTraps(kTrapMemOutOfBounds, () => memoryCopy(0, 1000, kPageSize));
assertTraps(kTrapMemOutOfBounds, () => memoryCopy(0, kPageSize, 1));
// Destination range must not be out of bounds.
assertTraps(kTrapMemOutOfBounds, () => memoryCopy(1, 0, kPageSize));
assertTraps(kTrapMemOutOfBounds, () => memoryCopy(1000, 0, kPageSize));
assertTraps(kTrapMemOutOfBounds, () => memoryCopy(kPageSize, 0, 1));
// Make sure bounds aren't checked with 32-bit wrapping.
assertTraps(kTrapMemOutOfBounds, () => memoryCopy(1, 1, -1));
mem.grow(1);
// Works properly after grow.
memoryCopy(0, kPageSize, 1000);
// Traps at new boundary.
assertTraps(
kTrapMemOutOfBounds, () => memoryCopy(0, kPageSize + 1, kPageSize));
})();
function getMemoryFill(mem) {
const builder = new WasmModuleBuilder();
builder.addImportedMemory("", "mem", 0);
builder.addFunction("fill", kSig_v_iii).addBody([
kExprGetLocal, 0, // Dest.
kExprGetLocal, 1, // Byte value.
kExprGetLocal, 2, // Size.
kNumericPrefix, kExprMemoryFill, 0,
]).exportAs("fill");
return builder.instantiate({'': {mem}}).exports.fill;
}
(function TestMemoryFill() {
const mem = new WebAssembly.Memory({initial: 1});
const memoryFill = getMemoryFill(mem);
const u8a = new Uint8Array(mem.buffer);
memoryFill(1, 33, 5);
assertBufferContents(u8a, [0, 33, 33, 33, 33, 33]);
memoryFill(4, 66, 4);
assertBufferContents(u8a, [0, 33, 33, 33, 66, 66, 66, 66]);
// Fill 0 bytes does nothing.
memoryFill(4, 66, 0);
assertBufferContents(u8a, [0, 33, 33, 33, 66, 66, 66, 66]);
})();
(function TestMemoryFillValueWrapsToByte() {
const mem = new WebAssembly.Memory({initial: 1});
const memoryFill = getMemoryFill(mem);
const u8a = new Uint8Array(mem.buffer);
memoryFill(0, 1000, 3);
const expected = 1000 & 255;
assertBufferContents(u8a, [expected, expected, expected]);
})();
(function TestMemoryFillOutOfBounds() {
const mem = new WebAssembly.Memory({initial: 1});
const memoryFill = getMemoryFill(mem);
const v = 123;
memoryFill(0, 0, kPageSize);
// Destination range must not be out of bounds.
assertTraps(kTrapMemOutOfBounds, () => memoryFill(1, v, kPageSize));
assertTraps(kTrapMemOutOfBounds, () => memoryFill(1000, v, kPageSize));
assertTraps(kTrapMemOutOfBounds, () => memoryFill(kPageSize, v, 1));
// Make sure bounds aren't checked with 32-bit wrapping.
assertTraps(kTrapMemOutOfBounds, () => memoryFill(1, v, -1));
mem.grow(1);
// Works properly after grow.
memoryFill(kPageSize, v, 1000);
// Traps at new boundary.
assertTraps(
kTrapMemOutOfBounds, () => memoryFill(kPageSize + 1, v, kPageSize));
})();
(function TestTableDropActive() {
const builder = new WasmModuleBuilder();
builder.setTableBounds(5, 5);
builder.addElementSegment(0, false, [0, 0, 0]);
builder.addFunction('drop', kSig_v_v)
.addBody([
kNumericPrefix, kExprTableDrop,
0, // Element segment index.
])
.exportAs('drop');
const instance = builder.instantiate();
assertTraps(kTrapElemSegmentDropped, () => instance.exports.drop());
})();
(function TestTableDropTwice() {
const builder = new WasmModuleBuilder();
builder.setTableBounds(5, 5);
builder.addPassiveElementSegment([0, 0, 0]);
builder.addFunction('drop', kSig_v_v)
.addBody([
kNumericPrefix, kExprTableDrop,
0, // Element segment index.
])
.exportAs('drop');
const instance = builder.instantiate();
instance.exports.drop();
assertTraps(kTrapElemSegmentDropped, () => instance.exports.drop());
})();