ce45f687dc
Spill registers before stack checks so that we can inspect them, similar to traps. OSR during a stack check is still unsupported and will be fixed in a follow-up CL. R=clemensb@chromium.org Bug: v8:10235 Change-Id: I22c2da6b3f79b30c3838c568f9680204afc85d36 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339467 Commit-Queue: Thibaud Michaud <thibaudm@chromium.org> Reviewed-by: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/master@{#69277}
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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(async function pauseAndStep() {
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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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// TODO(thibaudm): Fix source position and OSR at stack checks.
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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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InspectorTest.log('Finished!');
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InspectorTest.completeTest();
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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 ${loc.columnNumber}`];
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// Inspect only the top wasm frame.
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for (var scope of frame.scopeChain) {
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if (scope.type == 'module') continue;
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var scope_properties =
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await Protocol.Runtime.getProperties({objectId: scope.object.objectId});
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let str = scope_properties.result.result.map(
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elem => WasmInspectorTest.getWasmValue(elem.value)).join(', ');
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line.push(`${scope.type}: [${str}]`);
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}
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InspectorTest.log(line.join('; '));
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}
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