9009939437
R=clemensb@chromium.org Bug: v8:10321 Change-Id: Ia082b842de8947ead3931943b3bc05903a0f9e29 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2101002 Reviewed-by: Clemens Backes <clemensb@chromium.org> Commit-Queue: Thibaud Michaud <thibaudm@chromium.org> Cr-Commit-Position: refs/heads/master@{#66704}
100 lines
3.7 KiB
JavaScript
100 lines
3.7 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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// Flags: --debug-in-liftoff
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let {session, contextGroup, Protocol} =
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InspectorTest.start('Tests stepping through wasm scripts by byte offsets');
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utils.load('test/mjsunit/wasm/wasm-module-builder.js');
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var builder = new WasmModuleBuilder();
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var func_a_idx =
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builder.addFunction('wasm_A', kSig_v_i).addBody([kExprNop, kExprNop]).index;
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// wasm_B calls wasm_A <param0> times.
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builder.addFunction('wasm_B', kSig_v_i)
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.addBody([
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// clang-format off
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kExprLoop, kWasmStmt, // while
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kExprLocalGet, 0, // -
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kExprIf, kWasmStmt, // if <param0> != 0
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kExprLocalGet, 0, // -
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kExprI32Const, 1, // -
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kExprI32Sub, // -
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kExprLocalSet, 0, // decrease <param0>
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...wasmI32Const(1024), // some longer i32 const (2 byte imm)
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kExprCallFunction, func_a_idx, // -
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kExprBr, 1, // continue
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kExprEnd, // -
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kExprEnd, // break
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// clang-format on
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])
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.exportAs('main');
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var module_bytes = builder.toArray();
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function instantiate(bytes) {
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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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var module = new WebAssembly.Module(buffer);
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// Set global variable.
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instance = new WebAssembly.Instance(module);
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}
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(async function test() {
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for (const action of ['stepInto', 'stepOver', 'stepOut', 'resume'])
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InspectorTest.logProtocolCommandCalls('Debugger.' + action);
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await Protocol.Debugger.enable();
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InspectorTest.log('Setting up global instance variable.');
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Protocol.Runtime.evaluate({
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expression: `var instance;` +
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`(${instantiate.toString()})(${JSON.stringify(module_bytes)})`
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});
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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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// Set the breakpoint on a non-breakable position. This should resolve to the
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// next instruction.
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InspectorTest.log(
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`Setting breakpoint on offset 59 (should be propagated to 60, the ` +
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`offset of the call), url ${wasmScript.url}`);
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const bpmsg = await Protocol.Debugger.setBreakpoint({
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location: {scriptId: wasmScript.scriptId, lineNumber: 0, columnNumber: 59}
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});
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const actualLocation = bpmsg.result.actualLocation;
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InspectorTest.logMessage(actualLocation);
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Protocol.Runtime.evaluate({ expression: 'instance.exports.main(4)' });
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await waitForPauseAndStep('stepOver'); // over call to wasm_A
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await waitForPauseAndStep('resume'); // stop on breakpoint
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await waitForPauseAndStep('stepOver'); // over call
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await waitForPauseAndStep('stepOver'); // over br
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await waitForPauseAndStep('resume'); // to next breakpoint (3rd iteration)
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await waitForPauseAndStep('stepOver'); // over wasm_A
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// Step over 10 times.
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for (let i = 0; i < 10; ++i) await waitForPauseAndStep('stepOver');
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// Then just resume.
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await waitForPauseAndStep('resume');
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InspectorTest.log('exports.main returned!');
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InspectorTest.log('Finished!');
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})().catch(reason => InspectorTest.log(`Failed: ${reason}`))
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.finally(InspectorTest.completeTest);
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async function waitForPauseAndStep(stepAction) {
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const {params: {callFrames}} = await Protocol.Debugger.oncePaused();
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const topFrame = callFrames[0];
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InspectorTest.log(
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`Paused at ${topFrame.url}:${topFrame.location.lineNumber}:${topFrame.location.columnNumber}`);
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Protocol.Debugger[stepAction]();
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}
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