918e478354
It turned out that executing 1 million (wasm) instructions can take way over a minute on a simulator. Thus changing this back to 16k instructions (as it was before https://crrev.com/c/4078983). This takes around 5 seconds on my machine. R=jkummerow@chromium.org Bug: chromium:1396351, chromium:1396237 Change-Id: Ibf2ae2c81816be93807e564876b75aec18a57c42 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4079195 Commit-Queue: Clemens Backes <clemensb@chromium.org> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Cr-Commit-Position: refs/heads/main@{#84691}
60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
// Copyright 2016 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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#ifndef WASM_FUZZER_COMMON_H_
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#define WASM_FUZZER_COMMON_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <memory>
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#include "src/wasm/module-decoder.h"
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#include "src/wasm/wasm-module-builder.h"
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namespace v8::internal::wasm::fuzzer {
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// A default value for {max_executed_instructions} in {ExecuteAgainstReference}.
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#ifdef USE_SIMULATOR
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constexpr int kDefaultMaxFuzzerExecutedInstructions = 16'000;
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#else
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constexpr int kDefaultMaxFuzzerExecutedInstructions = 1'000'000;
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#endif
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// First creates a reference module fully compiled with Liftoff, with
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// instrumentation to stop after a given number of steps and to record any
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// nondeterminism while executing. If execution finishes within {max_steps},
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// {module_object} is instantiated, its "main" function is executed, and the
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// result is compared against the reference execution. If non-determinism was
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// detected during the reference execution, the result is allowed to differ.
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void ExecuteAgainstReference(Isolate* isolate,
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Handle<WasmModuleObject> module_object,
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int32_t max_executed_instructions);
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void GenerateTestCase(Isolate* isolate, ModuleWireBytes wire_bytes,
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bool compiles);
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// On the first call, enables all staged wasm features and experimental features
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// that are ready for fuzzing. All subsequent calls are no-ops. This avoids race
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// conditions with threads reading the flags. Fuzzers are executed in their own
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// process anyway, so this should not interfere with anything.
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void EnableExperimentalWasmFeatures(v8::Isolate* isolate);
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class WasmExecutionFuzzer {
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public:
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virtual ~WasmExecutionFuzzer() = default;
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void FuzzWasmModule(base::Vector<const uint8_t> data,
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bool require_valid = false);
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virtual size_t max_input_size() const { return 512; }
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protected:
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virtual bool GenerateModule(Isolate* isolate, Zone* zone,
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base::Vector<const uint8_t> data,
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ZoneBuffer* buffer) = 0;
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};
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} // namespace v8::internal::wasm::fuzzer
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#endif // WASM_FUZZER_COMMON_H_
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