1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
// Copyright 2020 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 --wasm-expose-debug-eval
const {session, contextGroup, Protocol} =
InspectorTest.start('Tests wasm debug-evaluate');
utils.load('test/mjsunit/wasm/wasm-module-builder.js');
function instantiate(bytes) {
let buffer = new ArrayBuffer(bytes.length);
let view = new Uint8Array(buffer);
for (let i = 0; i < bytes.length; ++i) {
view[i] = bytes[i] | 0;
}
let module = new WebAssembly.Module(buffer);
return new WebAssembly.Instance(module);
}
contextGroup.addScript(instantiate.toString());
function printFailure(message) {
if (!message.result) {
InspectorTest.logMessage(message);
}
return message;
}
async function getWasmScript() {
while (true) {
const script = await Protocol.Debugger.onceScriptParsed();
if (script.params.url.startsWith('wasm://')) return script.params;
}
}
async function handleDebuggerPaused(data, messageObject) {
const topFrameId = messageObject.params.callFrames[0].callFrameId;
const params = {callFrameId: topFrameId, evaluator: data};
try {
const evalResult = await Protocol.Debugger.executeWasmEvaluator(params);
InspectorTest.log('Result: ' + evalResult.result.result.value);
} catch (err) {
InspectorTest.log(
'Eval failed: ' + err + '\nGot: ' + JSON.stringify(evalResult));
}
await Protocol.Debugger.resume();
}
async function runTest(testName, breakLine, debuggeeBytes, snippetBytes) {
try {
await Protocol.Debugger.onPaused(
handleDebuggerPaused.bind(null, snippetBytes));
InspectorTest.log('Test: ' + testName);
const scriptListener = getWasmScript();
const module = JSON.stringify(debuggeeBytes);
await Protocol.Runtime.evaluate(
{'expression': `const instance = instantiate(${module})`});
const script = await scriptListener;
const msg = await Protocol.Debugger.setBreakpoint({
'location': {
'scriptId': script.scriptId,
'lineNumber': 0,
'columnNumber': breakLine
}
});
printFailure(msg);
const eval = await Protocol.Runtime.evaluate(
{'expression': 'instance.exports.main()'});
InspectorTest.log(
'Expected: ' + String.fromCharCode(eval.result.result.value));
InspectorTest.log('Finished!');
} catch (err) {
InspectorTest.log(err.message);
}
}
// copied from v8
function encode64(data) {
const BASE =
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
const PAD = '=';
var ret = '';
var leftchar = 0;
var leftbits = 0;
for (var i = 0; i < data.length; i++) {
leftchar = (leftchar << 8) | data[i];
leftbits += 8;
while (leftbits >= 6) {
const curr = (leftchar >> (leftbits - 6)) & 0x3f;
leftbits -= 6;
ret += BASE[curr];
}
}
if (leftbits == 2) {
ret += BASE[(leftchar & 3) << 4];
ret += PAD + PAD;
} else if (leftbits == 4) {
ret += BASE[(leftchar & 0xf) << 2];
ret += PAD;
}
return ret;
}
(async () => {
try {
await Protocol.Debugger.enable();
await (async function TestGetMemory() {
const debuggee_builder = new WasmModuleBuilder();
debuggee_builder.addMemory(256, 256);
const mainFunc =
debuggee_builder.addFunction('main', kSig_i_v)
.addBody([
// clang-format off
kExprI32Const, 32,
kExprI32Const, 50,
kExprI32StoreMem, 0, 0,
kExprI32Const, 32,
kExprI32LoadMem, 0, 0,
kExprReturn
// clang-format on
])
.exportAs('main');
const snippet_builder = new WasmModuleBuilder();
snippet_builder.addMemory(1, 1);
const getMemoryIdx = snippet_builder.addImport(
'env', '__getMemory', makeSig([kWasmI32, kWasmI32, kWasmI32], []));
const heapBase = 32; // Just pick some position in memory
snippet_builder.addFunction('wasm_format', kSig_i_v)
.addBody([
// clang-format off
// __getMemory(32, 4, heapBase)
kExprI32Const, 32, kExprI32Const, 4, kExprI32Const, heapBase,
kExprCallFunction, getMemoryIdx,
// return heapBase
kExprI32Const, heapBase,
kExprReturn
// clang-format on
])
.exportAs('wasm_format');
const debuggeeModule = debuggee_builder.toArray();
await runTest(
'TestGetMemory', mainFunc.body_offset + 9, debuggeeModule,
encode64(snippet_builder.toArray()));
})();
} catch (err) {
InspectorTest.log(err)
}
InspectorTest.completeTest();
})();
|
