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// 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.
// Flags: --experimental-wasm-type-reflection
utils.load('test/inspector/wasm-inspector-test.js');
let {session, contextGroup, Protocol} = InspectorTest.start(
'Test retrieving scope information from compiled Liftoff frames');
session.setupScriptMap();
Protocol.Runtime.enable();
Protocol.Debugger.enable();
Protocol.Debugger.onPaused(printPauseLocationsAndContinue);
let breakpointLocation = -1;
InspectorTest.runAsyncTestSuite([
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 line 2 (first instruction) of third 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 WasmInspectorTest.evalWithUrl('instance.exports.main(42)', 'runWasm');
InspectorTest.log('exports.main returned. Test finished.');
}
]);
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 WasmInspectorTest.dumpScopeProperties(properties);
}
}
InspectorTest.log();
Protocol.Debugger.stepOver();
}
async function instantiateWasm() {
var builder = new WasmModuleBuilder();
// Add a global, memory and exports to populate the module scope.
builder.addGlobal(kWasmI32, true).exportAs('exported_global');
builder.addMemory(1,1).exportMemoryAs('exported_memory');
builder.addTable(kWasmAnyFunc, 3).exportAs('exported_table');
// Add two functions without breakpoint, to check that locals and operand
// stack values are shown correctly in Liftoff code.
// Function A will have its parameter spilled to the stack, because it calls
// function B.
// Function B has a local with a constant value (not using a register), the
// parameter will be held in a register.
const main = builder.addFunction('A (liftoff)', kSig_v_i)
.addBody([
// Call function 'B', forwarding param 0.
kExprLocalGet, 0, kExprCallFunction, 1
])
.exportAs('main');
builder.addFunction('B (liftoff)', kSig_v_i, ['i32_arg'])
.addLocals(kWasmI32, 1, ['i32_local'])
.addLocals(kWasmF32, 4, ['f32_local', '0', '0'])
.addLocals(kWasmS128, 1, ['v128_local'])
.addBody([
// Load a parameter and a constant onto the operand stack.
kExprLocalGet, 0, kExprI32Const, 3,
// Set local 6 to v128 i32.x4 23, 23, 23, 23.
kExprI32Const, 23,
kSimdPrefix, kExprI32x4Splat,
kExprLocalSet, 6,
// Set local 2 to 7.2.
...wasmF32Const(7.2), kExprLocalSet, 2,
// Call function 'C', forwarding param 0.
kExprLocalGet, 0, kExprCallFunction, 2,
// Drop the two operand stack values.
kExprDrop, kExprDrop
]);
// A third function which will be stepped through.
let func = builder.addFunction('C (interpreted)', kSig_v_i, ['i32_arg'])
.addLocals(kWasmI32, 1, ['i32_local'])
.addLocals(kWasmF32, 1, [''])
.addBody([
// Set global 0 to param 0.
kExprLocalGet, 0, kExprGlobalSet, 0,
// Set local 1 to 47.
kExprI32Const, 47, kExprLocalSet, 1,
]);
// Append function to table to test function table output.
builder.appendToTable([main.index]);
var module_bytes = builder.toArray();
breakpointLocation = func.body_offset;
function addWasmJSToTable() {
// Create WasmJS functions to test the function tables output.
const js_func = function js_func() { return 7; };
const wasmjs_func = new WebAssembly.Function({parameters:[], results:['i32']}, js_func);
const wasmjs_anonymous_func = new WebAssembly.Function({parameters:[], results:['i32']}, _ => 7);
instance.exports.exported_table.set(0, wasmjs_func);
instance.exports.exported_table.set(1, wasmjs_anonymous_func);
}
InspectorTest.log('Calling instantiate function.');
await WasmInspectorTest.instantiate(module_bytes);
await WasmInspectorTest.evalWithUrl(`(${addWasmJSToTable})()`, 'populateTable');
}
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;
}
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