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
|
// Copyright 2019 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.
let {session, contextGroup, Protocol} =
InspectorTest.start('Tests stepping through wasm scripts by byte offsets');
session.setupScriptMap();
utils.load('test/mjsunit/wasm/wasm-module-builder.js');
var builder = new WasmModuleBuilder();
var func_a_idx =
builder.addFunction('wasm_A', kSig_v_i).addBody([kExprNop, kExprNop]).index;
// wasm_B calls wasm_A <param0> times.
builder.addFunction('wasm_B', kSig_v_i)
.addBody([
// clang-format off
kExprLoop, kWasmStmt, // while
kExprLocalGet, 0, // -
kExprIf, kWasmStmt, // if <param0> != 0
kExprLocalGet, 0, // -
kExprI32Const, 1, // -
kExprI32Sub, // -
kExprLocalSet, 0, // decrease <param0>
...wasmI32Const(1024), // some longer i32 const (2 byte imm)
kExprCallFunction, func_a_idx, // -
kExprBr, 1, // continue
kExprEnd, // -
kExprEnd, // break
// clang-format on
])
.exportAs('main');
var module_bytes = builder.toArray();
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);
// Set global variable.
instance = new WebAssembly.Instance(module);
}
(async function test() {
for (const action of ['stepInto', 'stepOver', 'stepOut', 'resume'])
InspectorTest.logProtocolCommandCalls('Debugger.' + action);
await Protocol.Debugger.enable();
InspectorTest.log('Setting up global instance variable.');
Protocol.Runtime.evaluate({
expression: `var instance;` +
`(${instantiate.toString()})(${JSON.stringify(module_bytes)})`
});
const [, {params: wasmScript}] = await Protocol.Debugger.onceScriptParsed(2);
InspectorTest.log('Got wasm script: ' + wasmScript.url);
// Set the breakpoint on a non-breakable position. This should resolve to the
// next instruction.
InspectorTest.log(
`Setting breakpoint on offset 59 (should be propagated to 60, the ` +
`offset of the call), url ${wasmScript.url}`);
const bpmsg = await Protocol.Debugger.setBreakpoint({
location: {scriptId: wasmScript.scriptId, lineNumber: 0, columnNumber: 59}
});
const actualLocation = bpmsg.result.actualLocation;
InspectorTest.logMessage(actualLocation);
Protocol.Runtime.evaluate({ expression: 'instance.exports.main(4)' });
await waitForPauseAndStep('stepInto'); // into call to wasm_A
await waitForPauseAndStep('stepOver'); // over first nop
await waitForPauseAndStep('stepOut'); // out of wasm_A
await waitForPauseAndStep('stepOut'); // out of wasm_B, stop on breakpoint
await waitForPauseAndStep('stepOver'); // over call
await waitForPauseAndStep('stepInto'); // == stepOver br
await waitForPauseAndStep('resume'); // to next breakpoint (3rd iteration)
await waitForPauseAndStep('stepInto'); // into wasm_A
await waitForPauseAndStep('stepOut'); // out to wasm_B
// Now step 9 times, until we are in wasm_A again.
for (let i = 0; i < 9; ++i) await waitForPauseAndStep('stepInto');
// 3 more times, back to wasm_B.
for (let i = 0; i < 3; ++i) await waitForPauseAndStep('stepInto');
// Then just resume.
await waitForPauseAndStep('resume');
InspectorTest.log('exports.main returned!');
InspectorTest.log('Finished!');
})().catch(reason => InspectorTest.log(`Failed: ${reason}`))
.finally(InspectorTest.completeTest);
async function waitForPauseAndStep(stepAction) {
const {params: {callFrames}} = await Protocol.Debugger.oncePaused();
await session.logSourceLocation(callFrames[0].location);
for (var frame of callFrames) {
const functionName = frame.functionName || '(anonymous)';
const lineNumber = frame.location.lineNumber;
const columnNumber = frame.location.columnNumber;
InspectorTest.log(`at ${functionName} (${lineNumber}:${columnNumber}):`);
for (var scope of frame.scopeChain) {
InspectorTest.logObject(' - scope (' + scope.type + '):');
if (scope.type === 'module' || scope.type === 'global') {
InspectorTest.logObject(' -- skipped');
} else {
const {result: {result: {value}}} =
await Protocol.Runtime.callFunctionOn({
objectId: scope.object.objectId,
functionDeclaration: 'function() { return this; }',
returnByValue: true
});
if (scope.type === 'local') {
InspectorTest.log(` locals: ${JSON.stringify(value.locals)}`);
} else {
InspectorTest.log(` ${JSON.stringify(value)}`);
}
}
}
}
Protocol.Debugger[stepAction]();
}
|
