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// 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.
#include "src/api.h"
#include "src/assembler-inl.h"
#include "src/trap-handler/trap-handler.h"
#include "test/cctest/cctest.h"
#include "test/cctest/compiler/value-helper.h"
#include "test/cctest/wasm/wasm-run-utils.h"
#include "test/common/wasm/test-signatures.h"
#include "test/common/wasm/wasm-macro-gen.h"
namespace v8 {
namespace internal {
namespace wasm {
namespace test_wasm_trap_position {
using v8::Local;
using v8::Utils;
namespace {
#define CHECK_CSTREQ(exp, found) \
do { \
const char* exp_ = (exp); \
const char* found_ = (found); \
DCHECK_NOT_NULL(exp); \
if (V8_UNLIKELY(found_ == nullptr || strcmp(exp_, found_) != 0)) { \
V8_Fatal(__FILE__, __LINE__, \
"Check failed: (%s) != (%s) ('%s' vs '%s').", #exp, #found, \
exp_, found_ ? found_ : "<null>"); \
} \
} while (0)
struct ExceptionInfo {
const char* func_name;
int line_nr;
int column;
};
template <int N>
void CheckExceptionInfos(v8::internal::Isolate* i_isolate, Handle<Object> exc,
const ExceptionInfo (&excInfos)[N]) {
// Check that it's indeed an Error object.
CHECK(exc->IsJSError());
v8::Isolate* v8_isolate = reinterpret_cast<v8::Isolate*>(i_isolate);
exc->Print();
// Extract stack frame from the exception.
Local<v8::Value> localExc = Utils::ToLocal(exc);
v8::Local<v8::StackTrace> stack = v8::Exception::GetStackTrace(localExc);
CHECK(!stack.IsEmpty());
CHECK_EQ(N, stack->GetFrameCount());
for (int frameNr = 0; frameNr < N; ++frameNr) {
v8::Local<v8::StackFrame> frame = stack->GetFrame(frameNr);
v8::String::Utf8Value funName(v8_isolate, frame->GetFunctionName());
CHECK_CSTREQ(excInfos[frameNr].func_name, *funName);
CHECK_EQ(excInfos[frameNr].line_nr, frame->GetLineNumber());
CHECK_EQ(excInfos[frameNr].column, frame->GetColumn());
}
}
#undef CHECK_CSTREQ
} // namespace
// Trigger a trap for executing unreachable.
WASM_EXEC_TEST(Unreachable) {
// Create a WasmRunner with stack checks and traps enabled.
WasmRunner<void> r(execution_mode, 0, "main", kRuntimeExceptionSupport);
TestSignatures sigs;
BUILD(r, WASM_UNREACHABLE);
uint32_t wasm_index = r.function()->func_index;
Handle<JSFunction> js_wasm_wrapper = r.builder().WrapCode(wasm_index);
Handle<JSFunction> js_trampoline = Handle<JSFunction>::cast(
v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast(
CompileRun("(function callFn(fn) { fn(); })"))));
Isolate* isolate = js_wasm_wrapper->GetIsolate();
isolate->SetCaptureStackTraceForUncaughtExceptions(true, 10,
v8::StackTrace::kOverview);
Handle<Object> global(isolate->context()->global_object(), isolate);
MaybeHandle<Object> maybe_exc;
Handle<Object> args[] = {js_wasm_wrapper};
MaybeHandle<Object> returnObjMaybe =
Execution::TryCall(isolate, js_trampoline, global, 1, args,
Execution::MessageHandling::kReport, &maybe_exc);
CHECK(returnObjMaybe.is_null());
// Line and column are 1-based, so add 1 for the expected wasm output.
ExceptionInfo expected_exceptions[] = {
{"main", static_cast<int>(wasm_index) + 1, 2}, // --
{"callFn", 1, 24} // --
};
CheckExceptionInfos(isolate, maybe_exc.ToHandleChecked(),
expected_exceptions);
}
// Trigger a trap for loading from out-of-bounds.
WASM_EXEC_TEST(IllegalLoad) {
WasmRunner<void> r(execution_mode, 0, "main", kRuntimeExceptionSupport);
TestSignatures sigs;
r.builder().AddMemory(0L);
BUILD(r, WASM_IF(WASM_ONE, WASM_SEQ(WASM_LOAD_MEM(MachineType::Int32(),
WASM_I32V_1(-3)),
WASM_DROP)));
uint32_t wasm_index_1 = r.function()->func_index;
WasmFunctionCompiler& f2 = r.NewFunction<void>("call_main");
// Insert a NOP such that the position of the call is not one.
BUILD(f2, WASM_NOP, WASM_CALL_FUNCTION0(wasm_index_1));
uint32_t wasm_index_2 = f2.function_index();
Handle<JSFunction> js_wasm_wrapper = r.builder().WrapCode(wasm_index_2);
Handle<JSFunction> js_trampoline = Handle<JSFunction>::cast(
v8::Utils::OpenHandle(*v8::Local<v8::Function>::Cast(
CompileRun("(function callFn(fn) { fn(); })"))));
Isolate* isolate = js_wasm_wrapper->GetIsolate();
isolate->SetCaptureStackTraceForUncaughtExceptions(true, 10,
v8::StackTrace::kOverview);
Handle<Object> global(isolate->context()->global_object(), isolate);
MaybeHandle<Object> maybe_exc;
Handle<Object> args[] = {js_wasm_wrapper};
MaybeHandle<Object> returnObjMaybe =
Execution::TryCall(isolate, js_trampoline, global, 1, args,
Execution::MessageHandling::kReport, &maybe_exc);
CHECK(returnObjMaybe.is_null());
// Line and column are 1-based, so add 1 for the expected wasm output.
ExceptionInfo expected_exceptions[] = {
{"main", static_cast<int>(wasm_index_1) + 1, 8}, // --
{"call_main", static_cast<int>(wasm_index_2) + 1, 3}, // --
{"callFn", 1, 24} // --
};
CheckExceptionInfos(isolate, maybe_exc.ToHandleChecked(),
expected_exceptions);
}
} // namespace test_wasm_trap_position
} // namespace wasm
} // namespace internal
} // namespace v8
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