b83c5a06c5
Make WasmFeatures a proper class which uses an EnumSet under the hood. This way, it inherits all behaviour of EnumSet like comparison, merge, etc. Accesses change from being simple field access into the struct to actually bit tests in the EnumSet. R=mstarzinger@chromium.org Bug: v8:10019 Change-Id: I768f92b90ac0294156f4482defba5ce00bc70165 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1934334 Commit-Queue: Clemens Backes <clemensb@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#65184}
75 lines
2.8 KiB
C++
75 lines
2.8 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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#include <limits.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "include/v8.h"
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#include "src/execution/isolate-inl.h"
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#include "src/heap/factory.h"
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#include "src/objects/objects-inl.h"
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#include "src/wasm/wasm-engine.h"
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#include "src/wasm/wasm-feature-flags.h"
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#include "src/wasm/wasm-module.h"
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#include "test/common/wasm/flag-utils.h"
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#include "test/common/wasm/wasm-module-runner.h"
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#include "test/fuzzer/fuzzer-support.h"
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#include "test/fuzzer/wasm-fuzzer-common.h"
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namespace i = v8::internal;
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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// We explicitly enable staged WebAssembly features here to increase fuzzer
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// coverage. For libfuzzer fuzzers it is not possible that the fuzzer enables
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// the flag by itself.
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#define ENABLE_STAGED_FEATURES(feat, desc, val) \
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i::FlagScope<bool> enable_##feat(&i::FLAG_experimental_wasm_##feat, true);
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FOREACH_WASM_STAGING_FEATURE_FLAG(ENABLE_STAGED_FEATURES)
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#undef ENABLE_STAGED_FEATURES
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// We reduce the maximum memory size and table size of WebAssembly instances
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// to avoid OOMs in the fuzzer.
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i::FlagScope<uint32_t> max_mem_flag_scope(&i::FLAG_wasm_max_mem_pages, 32);
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i::FlagScope<uint32_t> max_table_size_scope(&i::FLAG_wasm_max_table_size,
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100);
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v8_fuzzer::FuzzerSupport* support = v8_fuzzer::FuzzerSupport::Get();
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v8::Isolate* isolate = support->GetIsolate();
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i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
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// Clear any pending exceptions from a prior run.
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if (i_isolate->has_pending_exception()) {
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i_isolate->clear_pending_exception();
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}
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v8::Isolate::Scope isolate_scope(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Context::Scope context_scope(support->GetContext());
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v8::TryCatch try_catch(isolate);
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i::wasm::testing::SetupIsolateForWasmModule(i_isolate);
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i::wasm::ModuleWireBytes wire_bytes(data, data + size);
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i::HandleScope scope(i_isolate);
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i::wasm::ErrorThrower thrower(i_isolate, "wasm fuzzer");
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i::Handle<i::WasmModuleObject> module_object;
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auto enabled_features = i::wasm::WasmFeatures::FromIsolate(i_isolate);
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bool compiles =
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i_isolate->wasm_engine()
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->SyncCompile(i_isolate, enabled_features, &thrower, wire_bytes)
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.ToHandle(&module_object);
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if (i::FLAG_wasm_fuzzer_gen_test) {
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i::wasm::fuzzer::GenerateTestCase(i_isolate, wire_bytes, compiles);
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}
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if (compiles) {
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i::wasm::fuzzer::InterpretAndExecuteModule(i_isolate, module_object);
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}
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// Pump the message loop and run micro tasks, e.g. GC finalization tasks.
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support->PumpMessageLoop(v8::platform::MessageLoopBehavior::kDoNotWait);
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isolate->RunMicrotasks();
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return 0;
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}
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