f10edd0900
BREAKING CHANGE: The values of Wasm locals, stack, and globals are now represented as objects instead of holding the (primitive) values directly, and SIMD128 values are no longer represented as Uint8Arrays. The DWARF extension has been prepared for this breaking change. The new `WasmValue` comes with `type` and `value` properties that hold its contents. The motivation here is that this is a more extensible approach. In case of SIMD128, the `value` property holds the canonical string representation, which has the additional advantage that these values can be compared with `===` (and `==`). This partially reverts https://crrev.com/c/2614428, the main difference here being that WasmValue is now a proper JSObject that can be exposed on the DebugEvaluate proxy API. Screenshot: https://imgur.com/rcahNKM.png Bug: chromium:1170282, chromium:1071432, chromium:1159402 Change-Id: Iea304e3680775123c41deb4c3d172ac949da1b98 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2643384 Reviewed-by: Philip Pfaffe <pfaffe@chromium.org> Reviewed-by: Zhi An Ng <zhin@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#72570}
80 lines
2.8 KiB
JavaScript
80 lines
2.8 KiB
JavaScript
// Copyright 2020 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// Flags: --allow-natives-syntax
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utils.load('test/inspector/wasm-inspector-test.js');
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let {session, contextGroup, Protocol} =
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InspectorTest.start('Tests pausing a running script and stepping');
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var builder = new WasmModuleBuilder();
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let pause = builder.addImport('imports', 'pause', kSig_v_v);
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let f = builder.addFunction('f', kSig_i_i)
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.addBody([
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kExprLocalGet, 0,
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kExprI32Const, 1,
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kExprI32Add]);
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let main = builder.addFunction('main', kSig_i_v)
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.addBody([
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kExprCallFunction, pause,
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kExprI32Const, 12, kExprCallFunction, f.index])
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.exportFunc();
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var module_bytes = builder.toArray();
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function instantiate(bytes, imports) {
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var buffer = new ArrayBuffer(bytes.length);
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var view = new Uint8Array(buffer);
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for (var i = 0; i < bytes.length; ++i) {
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view[i] = bytes[i] | 0;
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}
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const module = new WebAssembly.Module(buffer);
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return new WebAssembly.Instance(module, imports);
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}
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InspectorTest.runAsyncTestSuite([
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async function testPauseAndStep() {
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await Protocol.Debugger.enable();
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InspectorTest.log('Instantiate');
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const instantiate_code = `var instance = (${instantiate})(${JSON.stringify(module_bytes)}, {'imports': {'pause': () => { %ScheduleBreak() } }});`;
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WasmInspectorTest.evalWithUrl(instantiate_code, 'instantiate');
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InspectorTest.log('Wait for script');
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const [, {params: wasmScript}] = await Protocol.Debugger.onceScriptParsed(2);
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InspectorTest.log('Got wasm script: ' + wasmScript.url);
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InspectorTest.log('Run');
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Protocol.Runtime.evaluate({expression: 'instance.exports.main()'});
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InspectorTest.log('Expecting to pause at ' + (f.body_offset - 1));
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await waitForPauseAndStep('stepInto');
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await waitForPauseAndStep('stepInto');
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await waitForPauseAndStep('stepInto');
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await waitForPauseAndStep('stepInto');
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await waitForPauseAndStep('resume');
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}
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]);
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async function waitForPauseAndStep(stepAction) {
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const msg = await Protocol.Debugger.oncePaused();
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await inspect(msg.params.callFrames[0]);
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Protocol.Debugger[stepAction]();
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}
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async function inspect(frame) {
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let loc = frame.location;
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let line = [`Paused at offset ${loc.columnNumber}`];
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// Inspect only the top wasm frame.
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for (var scope of frame.scopeChain) {
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if (scope.type == 'module') continue;
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var scope_properties =
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await Protocol.Runtime.getProperties({objectId: scope.object.objectId});
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let str = (await Promise.all(scope_properties.result.result.map(
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elem => WasmInspectorTest.getWasmValue(elem.value))))
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.join(', ');
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line.push(`${scope.type}: [${str}]`);
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}
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InspectorTest.log(line.join('; '));
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}
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