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
156
157
158
159
160
161
162
163
164
165
|
// Copyright 2017 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: --debug-in-liftoff
let {session, contextGroup, Protocol} = InspectorTest.start(
'Test retrieving scope information when pausing in wasm functions');
session.setupScriptMap();
Protocol.Debugger.enable();
Protocol.Debugger.onPaused(printPauseLocationsAndContinue);
let evaluate = code => Protocol.Runtime.evaluate({expression: code});
let breakpointLocation = undefined; // Will be set by {instantiateWasm}.
(async function test() {
// Instantiate wasm and wait for three wasm scripts for the three functions.
instantiateWasm();
let scriptIds = await waitForWasmScripts();
// Set a breakpoint.
InspectorTest.log(
'Setting breakpoint on first instruction of second function');
let breakpoint = await Protocol.Debugger.setBreakpoint({
'location' : {
'scriptId' : scriptIds[0],
'lineNumber' : 0,
'columnNumber' : breakpointLocation
}
});
printIfFailure(breakpoint);
InspectorTest.logMessage(breakpoint.result.actualLocation);
// Now run the wasm code.
await evaluate('instance.exports.main(4)');
InspectorTest.log('exports.main returned. Test finished.');
InspectorTest.completeTest();
})();
async function printPauseLocationsAndContinue(msg) {
let loc = msg.params.callFrames[0].location;
InspectorTest.log('Paused:');
await session.logSourceLocation(loc);
InspectorTest.log('Scope:');
for (var frame of msg.params.callFrames) {
var isWasmFrame = /^wasm/.test(frame.url);
var functionName = frame.functionName || '(anonymous)';
var lineNumber = frame.location.lineNumber;
var columnNumber = frame.location.columnNumber;
InspectorTest.log(`at ${functionName} (${lineNumber}:${columnNumber}):`);
for (var scope of frame.scopeChain) {
InspectorTest.logObject(' - scope (' + scope.type + '):');
if (!isWasmFrame && scope.type == 'global') {
// Skip global scope for non wasm-functions.
InspectorTest.logObject(' -- skipped globals');
continue;
}
var properties = await Protocol.Runtime.getProperties(
{'objectId': scope.object.objectId});
await dumpScopeProperties(properties);
}
}
InspectorTest.log();
Protocol.Debugger.stepOver();
}
async function instantiateWasm() {
utils.load('test/mjsunit/wasm/wasm-module-builder.js');
var builder = new WasmModuleBuilder();
// Also add a global, so we have some global scope.
builder.addGlobal(kWasmI32, true);
// Add a function without breakpoint, to check that locals are shown
// correctly in compiled code.
builder.addFunction('call_func', kSig_v_i).addLocals({f32_count: 1}).addBody([
// Set local 1 to 7.2.
...wasmF32Const(7.2), kExprLocalSet, 1,
// Call function 'func', forwarding param 0.
kExprLocalGet, 0, kExprCallFunction, 1
]).exportAs('main');
// A second function which will be stepped through.
let func = builder.addFunction('func', kSig_v_i)
.addLocals(
{i32_count: 1, i64_count: 1, f64_count: 3},
['i32Arg', undefined, 'i64_local', 'unicode☼f64', '0', '0'])
.addBody([
// Set param 0 to 11.
kExprI32Const, 11, kExprLocalSet, 0,
// Set local 1 to 47.
kExprI32Const, 47, kExprLocalSet, 1,
// Set local 2 to 0x7FFFFFFFFFFFFFFF (max i64).
kExprI64Const, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0,
kExprLocalSet, 2,
// Set local 2 to 0x8000000000000000 (min i64).
kExprI64Const, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x7f,
kExprLocalSet, 2,
// Set local 3 to 1/7.
kExprI32Const, 1, kExprF64UConvertI32, kExprI32Const, 7,
kExprF64UConvertI32, kExprF64Div, kExprLocalSet, 3,
// Set global 0 to 15
kExprI32Const, 15, kExprGlobalSet, 0,
]);
let moduleBytes = builder.toArray();
breakpointLocation = func.body_offset;
function instantiate(bytes) {
var buffer = new ArrayBuffer(bytes.length);
var view = new Uint8Array(buffer);
for (var i = 0; i < bytes.length; ++i) {
view[i] = bytes[i] | 0;
}
var module = new WebAssembly.Module(buffer);
return new WebAssembly.Instance(module);
}
InspectorTest.log('Calling instantiate function.');
evaluate(`var instance = (${instantiate})(${JSON.stringify(moduleBytes)})`);
}
function printIfFailure(message) {
if (!message.result) {
InspectorTest.logMessage(message);
}
return message;
}
async function waitForWasmScripts() {
InspectorTest.log('Waiting for wasm script to be parsed.');
let wasm_script_ids = [];
while (wasm_script_ids.length < 1) {
let script_msg = await Protocol.Debugger.onceScriptParsed();
let url = script_msg.params.url;
if (url.startsWith('wasm://')) {
InspectorTest.log('Got wasm script!');
wasm_script_ids.push(script_msg.params.scriptId);
}
}
return wasm_script_ids;
}
async function getScopeValues(value) {
if (value.type == 'object') {
let msg = await Protocol.Runtime.getProperties({objectId: value.objectId});
printIfFailure(msg);
const printProperty = function(elem) {
return `"${elem.name}": ${elem.value.value} (${elem.value.type})`;
}
return msg.result.result.map(printProperty).join(', ');
}
return value.value + ' (' + value.type + ')';
}
async function dumpScopeProperties(message) {
printIfFailure(message);
for (var value of message.result.result) {
var value_str = await getScopeValues(value.value);
InspectorTest.log(' ' + value.name + ': ' + value_str);
}
}
|
