v8/test/mjsunit/wasm/frame-inspection.js
titzer 2f8ed90582 [wasm] Enable wasm frame inspection for debugging
This changes many interfaces to accept StandardFrames instead of
JavaScriptFrames, and use the StackTraceFrameIterator instead of the
JavaScriptFrameIterator.
Also, the detailed frame information array now contains the script in
addition to the function, as wasm frames are not associated to any
javascript function.

This is a rebase of (https://codereview.chromium.org/2069823003/), since clemensh's internship has ended.

R=yangguo@chromium.org,ahaas@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2109093003
Cr-Commit-Position: refs/heads/master@{#37379}
2016-06-29 10:23:09 +00:00

75 lines
2.2 KiB
JavaScript

// Copyright 2016 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.
// Flags: --expose-wasm --expose-debug-as debug
load("test/mjsunit/wasm/wasm-constants.js");
load("test/mjsunit/wasm/wasm-module-builder.js");
Debug = debug.Debug
var exception = null;
var break_count = 0;
const expected_num_frames = 5;
const expected_wasm_frames = [false, true, true, false, false];
const expected_wasm_positions = [0, 1, 2, 0, 0];
const expected_function_names = ["call_debugger", "wasm_2", "wasm_1", "testFrameInspection", ""];
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
++break_count;
try {
var break_id = exec_state.break_id;
var frame_count = exec_state.frameCount();
assertEquals(expected_num_frames, frame_count);
for (var i = 0; i < frame_count; ++i) {
var frame = exec_state.frame(i);
// wasm frames have unresolved function, others resolved ones.
assertEquals(expected_wasm_frames[i], !frame.func().resolved());
assertEquals(expected_function_names[i], frame.func().name());
if (expected_wasm_frames[i]) {
var script = frame.details().script();
assertNotNull(script);
assertEquals(expected_wasm_positions[i], frame.details().sourcePosition());
var loc = script.locationFromPosition(frame.details().sourcePosition());
assertEquals(expected_wasm_positions[i], loc.column);
assertEquals(expected_wasm_positions[i], loc.position);
}
}
} catch (e) {
exception = e;
}
};
var builder = new WasmModuleBuilder();
// wasm_1 calls wasm_2 on offset 2.
// wasm_2 calls call_debugger on offset 1.
builder.addImport("func", kSig_v_v);
builder.addFunction("wasm_1", kSig_v_v)
.addBody([kExprNop, kExprCallFunction, kArity0, 1])
.exportAs("main");
builder.addFunction("wasm_2", kSig_v_v)
.addBody([kExprCallImport, kArity0, 0]);
function call_debugger() {
debugger;
}
var module = builder.instantiate({func: call_debugger});
(function testFrameInspection() {
Debug.setListener(listener);
module.exports.main();
Debug.setListener(null);
assertEquals(1, break_count);
if (exception) throw exception;
})();