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
|
// 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.
utils.load('test/inspector/wasm-inspector-test.js');
const {session, contextGroup, Protocol} =
InspectorTest.start('Test scope inspection and stepping after a trap.');
session.setupScriptMap();
const builder = new WasmModuleBuilder();
// Create a function which computes the div of the first two arguments.
builder.addFunction('div', kSig_i_iii)
.addLocals(
{i32_count: 2}, ['a', 'b', 'unused', 'local_zero', 'local_const_11'])
.addBody([
kExprI32Const, 11, // const 11
kExprLocalSet, 4, // set local #4 ('local_const_11')
kExprLocalGet, 0, // param 0
kExprLocalGet, 1, // param 1
kExprI32DivS // div
])
.exportFunc();
const module_bytes = builder.toArray();
function getShortLocationString(location) {
return `${location.lineNumber}:${location.columnNumber}`;
}
let actions = ['stepInto', 'resume', 'stepInto', 'resume'];
Protocol.Debugger.onPaused(async msg => {
InspectorTest.log('Paused at:');
for (let [nr, frame] of msg.params.callFrames.entries()) {
InspectorTest.log(`--- ${nr} ---`);
await session.logSourceLocation(frame.location);
if (/^wasm/.test(frame.url)) await printLocalScope(frame);
}
InspectorTest.log('-------------');
let action = actions.shift();
if (!action) {
InspectorTest.log('ERROR: no more expected action');
action = 'resume';
}
InspectorTest.log(`-> ${action}`);
Protocol.Debugger[action]();
});
function call_div() {
instance.exports.div(0, 1, 4711); // does not trap
try {
instance.exports.div(1, 0, 4711); // traps (div by zero)
} catch (e) {
e.stack; // step target of first pause
}
try {
instance.exports.div(0x80000000, -1, 4711); // traps (unrepresentable)
} catch (e) {
e.stack; // step target of second pause
}
}
contextGroup.addScript(call_div.toString());
(async function test() {
await Protocol.Debugger.enable();
await Protocol.Debugger.setPauseOnExceptions({state: 'all'});
InspectorTest.log('Instantiating.');
await WasmInspectorTest.instantiate(module_bytes);
InspectorTest.log('Calling div function.');
await Protocol.Runtime.evaluate({'expression': 'call_div()'});
InspectorTest.log('Finished.');
InspectorTest.completeTest();
})();
async function printLocalScope(frame) {
InspectorTest.log(`scope at ${frame.functionName} (${
frame.location.lineNumber}:${frame.location.columnNumber}):`);
for (let scope of frame.scopeChain) {
if (scope.type != 'local') continue;
let properties = await Protocol.Runtime.getProperties(
{'objectId': scope.object.objectId});
for (let value of properties.result.result) {
InspectorTest.log(` ${value.name}: ${value.value.value}`);
}
}
}
|
