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}
89 lines
2.9 KiB
JavaScript
89 lines
2.9 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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utils.load('test/inspector/wasm-inspector-test.js');
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const {session, contextGroup, Protocol} =
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InspectorTest.start('Test scope inspection and stepping after a trap.');
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session.setupScriptMap();
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const builder = new WasmModuleBuilder();
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// Create a function which computes the div of the first two arguments.
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builder.addFunction('div', kSig_i_iii, ['a', 'b', 'unused'])
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.addLocals(kWasmI32, 2, ['local_zero', 'local_const_11'])
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.addBody([
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kExprI32Const, 11, // const 11
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kExprLocalSet, 4, // set local #4 ('local_const_11')
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kExprLocalGet, 0, // param 0
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kExprLocalGet, 1, // param 1
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kExprI32DivS // div
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])
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.exportFunc();
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const module_bytes = builder.toArray();
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function getShortLocationString(location) {
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return `${location.lineNumber}:${location.columnNumber}`;
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}
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let actions = ['stepInto', 'resume', 'stepInto', 'resume'];
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Protocol.Debugger.onPaused(async msg => {
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InspectorTest.log('Paused at:');
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for (let [nr, frame] of msg.params.callFrames.entries()) {
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InspectorTest.log(`--- ${nr} ---`);
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await session.logSourceLocation(frame.location);
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if (/^wasm/.test(frame.url)) await printLocalScope(frame);
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}
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InspectorTest.log('-------------');
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let action = actions.shift();
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if (!action) {
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InspectorTest.log('ERROR: no more expected action');
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action = 'resume';
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}
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InspectorTest.log(`-> ${action}`);
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Protocol.Debugger[action]();
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});
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function call_div() {
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instance.exports.div(0, 1, 4711); // does not trap
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try {
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instance.exports.div(1, 0, 4711); // traps (div by zero)
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} catch (e) {
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e.stack; // step target of first pause
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}
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try {
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instance.exports.div(0x80000000, -1, 4711); // traps (unrepresentable)
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} catch (e) {
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e.stack; // step target of second pause
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}
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}
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contextGroup.addScript(call_div.toString());
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InspectorTest.runAsyncTestSuite([
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async function test() {
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await Protocol.Debugger.enable();
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await Protocol.Debugger.setPauseOnExceptions({state: 'all'});
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InspectorTest.log('Instantiating.');
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await WasmInspectorTest.instantiate(module_bytes);
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InspectorTest.log('Calling div function.');
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await Protocol.Runtime.evaluate({'expression': 'call_div()'});
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}
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]);
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async function printLocalScope(frame) {
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InspectorTest.log(`scope at ${frame.functionName} (${
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frame.location.lineNumber}:${frame.location.columnNumber}):`);
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for (let scope of frame.scopeChain) {
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if (scope.type != 'local') continue;
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let properties = await Protocol.Runtime.getProperties(
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{'objectId': scope.object.objectId});
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for (let {name, value} of properties.result.result) {
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value = await WasmInspectorTest.getWasmValue(value);
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InspectorTest.log(` ${name}: ${value}`);
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}
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}
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}
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