v8/test/inspector/debugger/wasm-scripts-disassembly.js
Jakob Kummerow 966e6f02c1 [wasm] Expose disassembler to DevTools
Bug: v8:12917
Change-Id: I8942664831c591f9b5566ee5b1609f68948601e7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3749208
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Philip Pfaffe <pfaffe@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81826}
2022-07-19 17:43:16 +00:00

85 lines
3.0 KiB
JavaScript

// Copyright 2022 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
utils.load('test/inspector/wasm-inspector-test.js');
InspectorTest.log("Tests disassembling wasm scripts");
let contextGroup = new InspectorTest.ContextGroup();
let { id: sessionId, Protocol } = contextGroup.connect();
Protocol.Debugger.enable();
const scriptPromise = new Promise(resolve => {
Protocol.Debugger.onScriptParsed(event => {
if (event.params.url.startsWith('wasm://')) {
resolve(event.params);
}
});
}).then(params => loadScript(params));
async function loadScript({url, scriptId}) {
InspectorTest.log(`Session #${sessionId}: Script parsed. URL: ${url}.`);
({result: {scriptSource, bytecode}} =
await Protocol.Debugger.getScriptSource({scriptId}));
({result: {
streamId,
totalNumberOfLines,
functionBodyOffsets,
chunk: {lines, bytecodeOffsets}
}} = await Protocol.Debugger.disassembleWasmModule({scriptId}));
InspectorTest.log(`Session #${sessionId}: Source for ${url}:`);
bytecode = InspectorTest.decodeBase64(bytecode);
const bytes = [];
for (let i = 0; i < bytecode.length; i++) {
let byte = bytecode[i];
bytes.push((byte < 0x10 ? '0x0' : '0x') + byte.toString(16) + " ");
if ((i & 7) == 7) bytes.push(` ;; offset ${i-7}..${i}\n`);
}
InspectorTest.log(`bytecode:\n${bytes.join("")}`);
InspectorTest.log(`streamid: ${streamId}`);
InspectorTest.log(`functionBodyOffsets: ${functionBodyOffsets}`);
InspectorTest.log(`totalNumberOfLines: ${totalNumberOfLines}`);
InspectorTest.log(`lines: \n${lines.join("\n")}`);
InspectorTest.log(`bytecodeOffsets: ${bytecodeOffsets}`);
if (streamId) {
({result: {chunk: {lines, bytecodeOffsets}}} =
await Protocol.Debugger.nextWasmDissassemblyChunk({streamId}));
InspectorTest.log(`chunk #2:`);
InspectorTest.log(`lines: \n${lines.join("\n")}`);
InspectorTest.log(`bytecodeOffsets: ${bytecodeOffsets}`);
}
}
const builder = new WasmModuleBuilder();
builder.addFunction('f1', kSig_i_r)
.addLocals(kWasmI32, 1, ["xyz"])
.addLocals(kWasmF64, 1)
.addBody([
kExprLocalGet, 1, kExprDrop, kExprI32Const, 42
]);
builder.addFunction('f2', kSig_v_v).addBody([kExprNop, kExprNop]);
builder.setName('moduleName');
const module_bytes = builder.toArray();
function testFunction(bytes) {
// Compilation triggers registration of wasm scripts.
new WebAssembly.Module(new Uint8Array(bytes));
}
contextGroup.addScript(testFunction.toString(), 0, 0, 'v8://test/testFunction');
contextGroup.addScript('const module_bytes = ' + JSON.stringify(module_bytes));
Protocol.Runtime
.evaluate({
'expression': '//# sourceURL=v8://test/runTestFunction\n' +
'testFunction(module_bytes);'
})
.then(() => scriptPromise)
.catch(err => {
InspectorTest.log(err.stack);
})
.then(() => InspectorTest.completeTest());