74e9318689
This changelist makes the GDB-stub actually execute GDB-remote commands, by accessing the Wasm engine state. More precisely: - class GdbServer registers DebugDelegates that receive debug notifications when a new Wasm module is loaded, when execution suspends at a breakpoint or for an unhandled exception. - Since the GDB-remote commands arrive on a separate thread, all queries from the debugger are transformed into Task objects, that are posted into a TaskRunner that runs in the Isolate thread. - class WasmModuleDebug contains the logic to retrieve the value of globals, locals, memory ranges from the Wasm engine and to add/remove breakpoints. Build with: v8_enable_wasm_gdb_remote_debugging = true Run with: --wasm-gdb-remote Test with: python tools\run-tests.py --outdir=out\debug_x64 debugging -j 1 Bug: chromium:1010467 Change-Id: I9703894620a027d3c920926db92e2ff809d84ab8 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1941139 Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Clemens Backes <clemensb@chromium.org> Commit-Queue: Paolo Severini <paolosev@microsoft.com> Cr-Commit-Position: refs/heads/master@{#67412}
32 lines
733 B
JavaScript
32 lines
733 B
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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load('test/mjsunit/wasm/wasm-module-builder.js');
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var builder = new WasmModuleBuilder();
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builder
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.addFunction('mul', kSig_i_ii)
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// input is 2 args of type int and output is int
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.addBody([
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kExprLocalGet, 0, // local.get i0
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kExprLocalGet, 1, // local.get i1
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kExprI32Mul
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]) // i32.mul i0 i1
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.exportFunc();
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const instance = builder.instantiate();
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const wasm_f = instance.exports.mul;
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function f() {
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var result = wasm_f(21, 2);
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return result;
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}
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try {
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let val = f();
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f();
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} catch (e) {
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print('*exception:* ' + e);
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}
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