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// 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);
}
}
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