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}
76 lines
2.8 KiB
JavaScript
76 lines
2.8 KiB
JavaScript
// Copyright 2021 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 conditional breakpoints in wasm.');
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session.setupScriptMap();
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const builder = new WasmModuleBuilder();
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const fib_body = [
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kExprLocalGet, 0, // i (for br_if or i32.sub)
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kExprLocalGet, 0, kExprI32Const, 2, kExprI32LeS, // i < 2 ?
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kExprBrIf, 0, // --> return i
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kExprI32Const, 1, kExprI32Sub, // i - 1
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kExprCallFunction, 0, // fib(i - 1)
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kExprLocalGet, 0, kExprI32Const, 2, kExprI32Sub, // i - 2
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kExprCallFunction, 0, // fib(i - 2)
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kExprI32Add // add (and return)
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];
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const fib = builder.addFunction('fib', kSig_i_i).addBody(fib_body).exportFunc();
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const module_bytes = builder.toArray();
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const find_offset = opcode => fib.body_offset + fib_body.indexOf(opcode);
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const breakpoints = [
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{loc: find_offset(kExprLocalGet), cond: 'false'},
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{loc: find_offset(kExprBrIf), cond: 'true'},
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{loc: find_offset(kExprCallFunction), cond: '$var0.value==3'}
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];
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Protocol.Debugger.onPaused(async msg => {
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var frames = msg.params.callFrames;
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await session.logSourceLocation(frames[0].location);
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var frame = msg.params.callFrames[0];
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for (var scope of frame.scopeChain) {
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if (scope.type != 'local') continue;
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var properties = await Protocol.Runtime.getProperties(
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{'objectId': scope.object.objectId});
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for (var {name, value} of properties.result.result) {
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value = await WasmInspectorTest.getWasmValue(value);
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InspectorTest.log(`${name}: ${value}`);
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}
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}
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Protocol.Debugger.resume();
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});
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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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InspectorTest.log('Instantiating.');
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// Spawn asynchronously:
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WasmInspectorTest.instantiate(module_bytes);
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InspectorTest.log('Waiting for wasm script.');
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const [, {params: wasm_script}] = await Protocol.Debugger.onceScriptParsed(2);
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InspectorTest.log(`Got wasm script: ${wasm_script.url}`);
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for (let breakpoint of breakpoints) {
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InspectorTest.log(`Setting breakpoint at offset ${breakpoint.loc}, condition "${breakpoint.cond}"`);
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InspectorTest.logMessage(await Protocol.Debugger.setBreakpoint({
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'location': {
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'scriptId': wasm_script.scriptId,
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'lineNumber': 0,
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'columnNumber': breakpoint.loc
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},
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condition: breakpoint.cond
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}));
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}
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InspectorTest.log('Calling fib(5)');
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await WasmInspectorTest.evalWithUrl('instance.exports.fib(5)', 'runWasm');
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InspectorTest.log('fib returned!');
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}
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]);
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