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// Copyright 2015 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: --expose-wasm --expose-gc --stress-compaction
load("test/mjsunit/wasm/wasm-constants.js");
var kMemSize = 4096;
function genModule(memory) {
var kBodySize = 27;
var kNameMainOffset = 28 + kBodySize + 1;
var data = bytes(
kDeclMemory,
12, 12, 1, // memory
// -- signatures
kDeclSignatures, 1,
1, kAstI32, kAstI32, // int->int
// -- main function
kDeclFunctions, 1,
kDeclFunctionLocals | kDeclFunctionName | kDeclFunctionExport,
0, 0,
kNameMainOffset, 0, 0, 0, // name offset
1, 0, // local int32 count
0, 0, // local int64 count
0, 0, // local float32 count
0, 0, // local float64 count
kBodySize, 0, // code size
// main body: while(i) { if(mem[i]) return -1; i -= 4; } return 0;
kExprBlock,2,
kExprLoop,1,
kExprIf,
kExprGetLocal,0,
kExprBr, 0,
kExprIfElse,
kExprI32LoadMem,0,kExprGetLocal,0,
kExprBr,2, kExprI8Const, 255,
kExprSetLocal,0,
kExprI32Sub,kExprGetLocal,0,kExprI8Const,4,
kExprI8Const,0,
// names
kDeclEnd,
'm', 'a', 'i', 'n', 0 // --
);
return _WASMEXP_.instantiateModule(data, null, memory);
}
function testPokeMemory() {
var module = genModule(null);
var buffer = module.memory;
assertEquals(kMemSize, buffer.byteLength);
var array = new Int8Array(buffer);
assertEquals(kMemSize, array.length);
for (var i = 0; i < kMemSize; i++) {
assertEquals(0, array[i]);
}
for (var i = 0; i < 10; i++) {
assertEquals(0, module.main(kMemSize - 4));
array[kMemSize/2 + i] = 1;
assertEquals(0, module.main(kMemSize/2 - 4));
assertEquals(-1, module.main(kMemSize - 4));
array[kMemSize/2 + i] = 0;
assertEquals(0, module.main(kMemSize - 4));
}
}
testPokeMemory();
function testSurvivalAcrossGc() {
var checker = genModule(null).main;
for (var i = 0; i < 5; i++) {
print("gc run ", i);
assertEquals(0, checker(kMemSize - 4));
gc();
}
}
testSurvivalAcrossGc();
testSurvivalAcrossGc();
testSurvivalAcrossGc();
testSurvivalAcrossGc();
function testPokeOuterMemory() {
var buffer = new ArrayBuffer(kMemSize);
var module = genModule(buffer);
assertEquals(kMemSize, buffer.byteLength);
var array = new Int8Array(buffer);
assertEquals(kMemSize, array.length);
for (var i = 0; i < kMemSize; i++) {
assertEquals(0, array[i]);
}
for (var i = 0; i < 10; i++) {
assertEquals(0, module.main(kMemSize - 4));
array[kMemSize/2 + i] = 1;
assertEquals(0, module.main(kMemSize/2 - 4));
assertEquals(-1, module.main(kMemSize - 4));
array[kMemSize/2 + i] = 0;
assertEquals(0, module.main(kMemSize - 4));
}
}
testPokeOuterMemory();
function testOuterMemorySurvivalAcrossGc() {
var buffer = new ArrayBuffer(kMemSize);
var checker = genModule(buffer).main;
for (var i = 0; i < 5; i++) {
print("gc run ", i);
assertEquals(0, checker(kMemSize - 4));
gc();
}
}
testOuterMemorySurvivalAcrossGc();
testOuterMemorySurvivalAcrossGc();
testOuterMemorySurvivalAcrossGc();
testOuterMemorySurvivalAcrossGc();
function testOOBThrows() {
var kBodySize = 8;
var kNameMainOffset = 29 + kBodySize + 1;
var data = bytes(
kDeclMemory,
12, 12, 1, // memory = 4KB
// -- signatures
kDeclSignatures, 1,
2, kAstI32, kAstI32, kAstI32, // int->int
// -- main function
kDeclFunctions, 1,
kDeclFunctionLocals | kDeclFunctionName | kDeclFunctionExport,
0, 0,
kNameMainOffset, 0, 0, 0, // name offset
1, 0, // local int32 count
0, 0, // local int64 count
0, 0, // local float32 count
0, 0, // local float64 count
kBodySize, 0, // code size
// geti: return mem[a] = mem[b]
kExprI32StoreMem, 0, kExprGetLocal, 0, kExprI32LoadMem, 0, kExprGetLocal, 1,
// names
kDeclEnd,
'g','e','t','i', 0 // --
);
var memory = null;
var module = _WASMEXP_.instantiateModule(data, null, memory);
var offset;
function read() { return module.geti(0, offset); }
function write() { return module.geti(offset, 0); }
for (offset = 0; offset < 4092; offset++) {
assertEquals(0, read());
assertEquals(0, write());
}
for (offset = 4093; offset < 4124; offset++) {
assertTraps(kTrapMemOutOfBounds, read);
assertTraps(kTrapMemOutOfBounds, write);
}
}
testOOBThrows();
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