41b34f2a55
Instead of returning 0xDEADBEEF, return a struct with proper information. Otherwise a function returning 0xDEADBEEF would be misidentified as trapping in the interpreter. R=ahaas@chromium.org Bug: chromium:906997 Change-Id: I92fc3a9972d76d2f8a5b313bf6be6eb027cfc1e9 Reviewed-on: https://chromium-review.googlesource.com/c/1344111 Reviewed-by: Andreas Haas <ahaas@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#57658}
121 lines
4.4 KiB
C++
121 lines
4.4 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 V8_WASM_MODULE_RUNNER_H_
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#define V8_WASM_MODULE_RUNNER_H_
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#include "src/isolate.h"
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#include "src/objects.h"
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#include "src/wasm/wasm-interpreter.h"
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#include "src/wasm/wasm-module.h"
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#include "src/wasm/wasm-objects.h"
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#include "src/wasm/wasm-result.h"
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#include "src/zone/zone.h"
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namespace v8 {
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namespace internal {
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template <typename T>
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class Handle;
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template <typename T>
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class MaybeHandle;
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namespace wasm {
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namespace testing {
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// Decodes the given encoded module.
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std::shared_ptr<WasmModule> DecodeWasmModuleForTesting(
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Isolate* isolate, ErrorThrower* thrower, const byte* module_start,
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const byte* module_end, ModuleOrigin origin, bool verify_functions = false);
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// Returns a MaybeHandle to the JsToWasm wrapper of the wasm function exported
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// with the given name by the provided instance.
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MaybeHandle<WasmExportedFunction> GetExportedFunction(
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Isolate* isolate, Handle<WasmInstanceObject> instance, const char* name);
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// Call an exported wasm function by name. Returns -1 if the export does not
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// exist or throws an error. Errors are cleared from the isolate before
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// returning.
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int32_t CallWasmFunctionForTesting(Isolate* isolate,
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Handle<WasmInstanceObject> instance,
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ErrorThrower* thrower, const char* name,
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int argc, Handle<Object> argv[]);
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// Interprets an exported wasm function by name. Returns false if it was not
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// possible to execute the function (e.g. because it does not exist), or if the
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// interpretation does not finish after kMaxNumSteps. Otherwise returns true.
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// The arguments array is extended with default values if necessary.
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bool InterpretWasmModuleForTesting(Isolate* isolate,
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Handle<WasmInstanceObject> instance,
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const char* name, size_t argc,
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WasmValue* args);
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// Decode, verify, and run the function labeled "main" in the
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// given encoded module. The module should have no imports.
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int32_t CompileAndRunWasmModule(Isolate* isolate, const byte* module_start,
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const byte* module_end);
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// Decode, compile, and instantiate the given module with no imports.
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MaybeHandle<WasmInstanceObject> CompileAndInstantiateForTesting(
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Isolate* isolate, ErrorThrower* thrower, const ModuleWireBytes& bytes);
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class WasmInterpretationResult {
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public:
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static WasmInterpretationResult Stopped() { return {kStopped, 0, false}; }
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static WasmInterpretationResult Trapped(bool possible_nondeterminism) {
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return {kTrapped, 0, possible_nondeterminism};
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}
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static WasmInterpretationResult Finished(int32_t result,
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bool possible_nondeterminism) {
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return {kFinished, result, possible_nondeterminism};
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}
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bool stopped() const { return status_ == kStopped; }
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bool trapped() const { return status_ == kTrapped; }
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bool finished() const { return status_ == kFinished; }
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int32_t result() const {
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DCHECK_EQ(status_, kFinished);
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return result_;
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}
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bool possible_nondeterminism() const { return possible_nondeterminism_; }
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private:
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enum Status { kFinished, kTrapped, kStopped };
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const Status status_;
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const int32_t result_;
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const bool possible_nondeterminism_;
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WasmInterpretationResult(Status status, int32_t result,
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bool possible_nondeterminism)
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: status_(status),
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result_(result),
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possible_nondeterminism_(possible_nondeterminism) {}
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};
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// Interprets the given module, starting at the function specified by
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// {function_index}. The return type of the function has to be int32. The module
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// should not have any imports or exports
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WasmInterpretationResult InterpretWasmModule(
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Isolate* isolate, Handle<WasmInstanceObject> instance,
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int32_t function_index, WasmValue* args);
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// Runs the module instance with arguments.
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int32_t RunWasmModuleForTesting(Isolate* isolate,
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Handle<WasmInstanceObject> instance, int argc,
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Handle<Object> argv[]);
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// Install function map, module symbol for testing
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void SetupIsolateForWasmModule(Isolate* isolate);
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} // namespace testing
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} // namespace wasm
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} // namespace internal
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} // namespace v8
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#endif // V8_WASM_MODULE_RUNNER_H_
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