// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <stdlib.h>
#include <wchar.h>
#include "v8.h"
#include "compiler.h"
#include "disasm.h"
#include "disassembler.h"
#include "execution.h"
#include "factory.h"
#include "platform.h"
#include "cctest.h"
using namespace v8::internal;
// --- P r i n t E x t e n s i o n ---
class PrintExtension : public v8::Extension {
public:
PrintExtension() : v8::Extension("v8/print", kSource) { }
virtual v8::Handle<v8::FunctionTemplate> GetNativeFunctionTemplate(
v8::Isolate* isolate,
v8::Handle<v8::String> name);
static void Print(const v8::FunctionCallbackInfo<v8::Value>& args);
private:
static const char* kSource;
};
const char* PrintExtension::kSource = "native function print();";
v8::Handle<v8::FunctionTemplate> PrintExtension::GetNativeFunctionTemplate(
v8::Isolate* isolate,
v8::Handle<v8::String> str) {
return v8::FunctionTemplate::New(PrintExtension::Print);
}
void PrintExtension::Print(const v8::FunctionCallbackInfo<v8::Value>& args) {
for (int i = 0; i < args.Length(); i++) {
if (i != 0) printf(" ");
v8::HandleScope scope(args.GetIsolate());
v8::String::Utf8Value str(args[i]);
if (*str == NULL) return;
printf("%s", *str);
}
printf("\n");
}
static PrintExtension kPrintExtension;
v8::DeclareExtension kPrintExtensionDeclaration(&kPrintExtension);
static MaybeObject* GetGlobalProperty(const char* name) {
Isolate* isolate = CcTest::i_isolate();
Handle<String> internalized_name =
isolate->factory()->InternalizeUtf8String(name);
return isolate->context()->global_object()->GetProperty(*internalized_name);
}
static void SetGlobalProperty(const char* name, Object* value) {
Isolate* isolate = CcTest::i_isolate();
Handle<Object> object(value, isolate);
Handle<String> internalized_name =
isolate->factory()->InternalizeUtf8String(name);
Handle<JSObject> global(isolate->context()->global_object());
Runtime::SetObjectProperty(isolate, global, internalized_name, object, NONE,
kNonStrictMode);
}
static Handle<JSFunction> Compile(const char* source) {
Isolate* isolate = CcTest::i_isolate();
Handle<String> source_code(
isolate->factory()->NewStringFromUtf8(CStrVector(source)));
Handle<SharedFunctionInfo> shared_function =
Compiler::Compile(source_code,
Handle<String>(),
0,
0,
false,
Handle<Context>(isolate->native_context()),
NULL,
NULL,
Handle<String>::null(),
NOT_NATIVES_CODE);
return isolate->factory()->NewFunctionFromSharedFunctionInfo(
shared_function, isolate->native_context());
}
static double Inc(Isolate* isolate, int x) {
const char* source = "result = %d + 1;";
EmbeddedVector<char, 512> buffer;
OS::SNPrintF(buffer, source, x);
Handle<JSFunction> fun = Compile(buffer.start());
if (fun.is_null()) return -1;
bool has_pending_exception;
Handle<JSObject> global(isolate->context()->global_object());
Execution::Call(isolate, fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
return GetGlobalProperty("result")->ToObjectChecked()->Number();
}
TEST(Inc) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CHECK_EQ(4.0, Inc(CcTest::i_isolate(), 3));
}
static double Add(Isolate* isolate, int x, int y) {
Handle<JSFunction> fun = Compile("result = x + y;");
if (fun.is_null()) return -1;
SetGlobalProperty("x", Smi::FromInt(x));
SetGlobalProperty("y", Smi::FromInt(y));
bool has_pending_exception;
Handle<JSObject> global(isolate->context()->global_object());
Execution::Call(isolate, fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
return GetGlobalProperty("result")->ToObjectChecked()->Number();
}
TEST(Add) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CHECK_EQ(5.0, Add(CcTest::i_isolate(), 2, 3));
}
static double Abs(Isolate* isolate, int x) {
Handle<JSFunction> fun = Compile("if (x < 0) result = -x; else result = x;");
if (fun.is_null()) return -1;
SetGlobalProperty("x", Smi::FromInt(x));
bool has_pending_exception;
Handle<JSObject> global(isolate->context()->global_object());
Execution::Call(isolate, fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
return GetGlobalProperty("result")->ToObjectChecked()->Number();
}
TEST(Abs) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CHECK_EQ(3.0, Abs(CcTest::i_isolate(), -3));
}
static double Sum(Isolate* isolate, int n) {
Handle<JSFunction> fun =
Compile("s = 0; while (n > 0) { s += n; n -= 1; }; result = s;");
if (fun.is_null()) return -1;
SetGlobalProperty("n", Smi::FromInt(n));
bool has_pending_exception;
Handle<JSObject> global(isolate->context()->global_object());
Execution::Call(isolate, fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
return GetGlobalProperty("result")->ToObjectChecked()->Number();
}
TEST(Sum) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
CHECK_EQ(5050.0, Sum(CcTest::i_isolate(), 100));
}
TEST(Print) {
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> context = CcTest::NewContext(PRINT_EXTENSION);
v8::Context::Scope context_scope(context);
const char* source = "for (n = 0; n < 100; ++n) print(n, 1, 2);";
Handle<JSFunction> fun = Compile(source);
if (fun.is_null()) return;
bool has_pending_exception;
Handle<JSObject> global(CcTest::i_isolate()->context()->global_object());
Execution::Call(
CcTest::i_isolate(), fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
}
// The following test method stems from my coding efforts today. It
// tests all the functionality I have added to the compiler today
TEST(Stuff) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
const char* source =
"r = 0;\n"
"a = new Object;\n"
"if (a == a) r+=1;\n" // 1
"if (a != new Object()) r+=2;\n" // 2
"a.x = 42;\n"
"if (a.x == 42) r+=4;\n" // 4
"function foo() { var x = 87; return x; }\n"
"if (foo() == 87) r+=8;\n" // 8
"function bar() { var x; x = 99; return x; }\n"
"if (bar() == 99) r+=16;\n" // 16
"function baz() { var x = 1, y, z = 2; y = 3; return x + y + z; }\n"
"if (baz() == 6) r+=32;\n" // 32
"function Cons0() { this.x = 42; this.y = 87; }\n"
"if (new Cons0().x == 42) r+=64;\n" // 64
"if (new Cons0().y == 87) r+=128;\n" // 128
"function Cons2(x, y) { this.sum = x + y; }\n"
"if (new Cons2(3,4).sum == 7) r+=256;"; // 256
Handle<JSFunction> fun = Compile(source);
CHECK(!fun.is_null());
bool has_pending_exception;
Handle<JSObject> global(CcTest::i_isolate()->context()->global_object());
Execution::Call(
CcTest::i_isolate(), fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
CHECK_EQ(511.0, GetGlobalProperty("r")->ToObjectChecked()->Number());
}
TEST(UncaughtThrow) {
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
const char* source = "throw 42;";
Handle<JSFunction> fun = Compile(source);
CHECK(!fun.is_null());
bool has_pending_exception;
Isolate* isolate = fun->GetIsolate();
Handle<JSObject> global(isolate->context()->global_object());
Execution::Call(isolate, fun, global, 0, NULL, &has_pending_exception);
CHECK(has_pending_exception);
CHECK_EQ(42.0, isolate->pending_exception()->ToObjectChecked()->Number());
}
// Tests calling a builtin function from C/C++ code, and the builtin function
// performs GC. It creates a stack frame looks like following:
// | C (PerformGC) |
// | JS-to-C |
// | JS |
// | C-to-JS |
TEST(C2JSFrames) {
v8::HandleScope scope(CcTest::isolate());
v8::Local<v8::Context> context =
CcTest::NewContext(PRINT_EXTENSION | GC_EXTENSION);
v8::Context::Scope context_scope(context);
const char* source = "function foo(a) { gc(), print(a); }";
Handle<JSFunction> fun0 = Compile(source);
CHECK(!fun0.is_null());
Isolate* isolate = fun0->GetIsolate();
// Run the generated code to populate the global object with 'foo'.
bool has_pending_exception;
Handle<JSObject> global(isolate->context()->global_object());
Execution::Call(
isolate, fun0, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
Object* foo_string = isolate->factory()->InternalizeOneByteString(
STATIC_ASCII_VECTOR("foo"))->ToObjectChecked();
MaybeObject* fun1_object = isolate->context()->global_object()->
GetProperty(String::cast(foo_string));
Handle<Object> fun1(fun1_object->ToObjectChecked(), isolate);
CHECK(fun1->IsJSFunction());
Handle<Object> argv[] = { isolate->factory()->InternalizeOneByteString(
STATIC_ASCII_VECTOR("hello")) };
Execution::Call(isolate,
Handle<JSFunction>::cast(fun1),
global,
ARRAY_SIZE(argv),
argv,
&has_pending_exception);
CHECK(!has_pending_exception);
}
// Regression 236. Calling InitLineEnds on a Script with undefined
// source resulted in crash.
TEST(Regression236) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
Factory* factory = isolate->factory();
v8::HandleScope scope(CcTest::isolate());
Handle<Script> script = factory->NewScript(factory->empty_string());
script->set_source(CcTest::heap()->undefined_value());
CHECK_EQ(-1, GetScriptLineNumber(script, 0));
CHECK_EQ(-1, GetScriptLineNumber(script, 100));
CHECK_EQ(-1, GetScriptLineNumber(script, -1));
}
TEST(GetScriptLineNumber) {
LocalContext context;
v8::HandleScope scope(CcTest::isolate());
v8::ScriptOrigin origin =
v8::ScriptOrigin(v8::String::NewFromUtf8(CcTest::isolate(), "test"));
const char function_f[] = "function f() {}";
const int max_rows = 1000;
const int buffer_size = max_rows + sizeof(function_f);
ScopedVector<char> buffer(buffer_size);
memset(buffer.start(), '\n', buffer_size - 1);
buffer[buffer_size - 1] = '\0';
for (int i = 0; i < max_rows; ++i) {
if (i > 0)
buffer[i - 1] = '\n';
OS::MemCopy(&buffer[i], function_f, sizeof(function_f) - 1);
v8::Handle<v8::String> script_body =
v8::String::NewFromUtf8(CcTest::isolate(), buffer.start());
v8::Script::Compile(script_body, &origin)->Run();
v8::Local<v8::Function> f =
v8::Local<v8::Function>::Cast(context->Global()->Get(
v8::String::NewFromUtf8(CcTest::isolate(), "f")));
CHECK_EQ(i, f->GetScriptLineNumber());
}
}
// Test that optimized code for different closures is actually shared
// immediately by the FastNewClosureStub when run in the same context.
TEST(OptimizedCodeSharing) {
// Skip test if --cache-optimized-code is not activated by default because
// FastNewClosureStub that is baked into the snapshot is incorrect.
if (!FLAG_cache_optimized_code) return;
FLAG_stress_compaction = false;
FLAG_allow_natives_syntax = true;
CcTest::InitializeVM();
v8::HandleScope scope(CcTest::isolate());
for (int i = 0; i < 10; i++) {
LocalContext env;
env->Global()->Set(v8::String::NewFromUtf8(CcTest::isolate(), "x"),
v8::Integer::New(i));
CompileRun("function MakeClosure() {"
" return function() { return x; };"
"}"
"var closure0 = MakeClosure();"
"%DebugPrint(closure0());"
"%OptimizeFunctionOnNextCall(closure0);"
"%DebugPrint(closure0());"
"var closure1 = MakeClosure();"
"var closure2 = MakeClosure();");
Handle<JSFunction> fun1 = v8::Utils::OpenHandle(
*v8::Local<v8::Function>::Cast(env->Global()->Get(v8_str("closure1"))));
Handle<JSFunction> fun2 = v8::Utils::OpenHandle(
*v8::Local<v8::Function>::Cast(env->Global()->Get(v8_str("closure2"))));
CHECK(fun1->IsOptimized()
|| !CcTest::i_isolate()->use_crankshaft() || !fun1->IsOptimizable());
CHECK(fun2->IsOptimized()
|| !CcTest::i_isolate()->use_crankshaft() || !fun2->IsOptimizable());
CHECK_EQ(fun1->code(), fun2->code());
}
}
#ifdef ENABLE_DISASSEMBLER
static Handle<JSFunction> GetJSFunction(v8::Handle<v8::Object> obj,
const char* property_name) {
v8::Local<v8::Function> fun =
v8::Local<v8::Function>::Cast(obj->Get(v8_str(property_name)));
return v8::Utils::OpenHandle(*fun);
}
static void CheckCodeForUnsafeLiteral(Handle<JSFunction> f) {
// Create a disassembler with default name lookup.
disasm::NameConverter name_converter;
disasm::Disassembler d(name_converter);
if (f->code()->kind() == Code::FUNCTION) {
Address pc = f->code()->instruction_start();
int decode_size =
Min(f->code()->instruction_size(),
static_cast<int>(f->code()->back_edge_table_offset()));
Address end = pc + decode_size;
v8::internal::EmbeddedVector<char, 128> decode_buffer;
v8::internal::EmbeddedVector<char, 128> smi_hex_buffer;
Smi* smi = Smi::FromInt(12345678);
OS::SNPrintF(smi_hex_buffer, "0x%lx", reinterpret_cast<intptr_t>(smi));
while (pc < end) {
int num_const = d.ConstantPoolSizeAt(pc);
if (num_const >= 0) {
pc += (num_const + 1) * kPointerSize;
} else {
pc += d.InstructionDecode(decode_buffer, pc);
CHECK(strstr(decode_buffer.start(), smi_hex_buffer.start()) == NULL);
}
}
}
}
TEST(SplitConstantsInFullCompiler) {
LocalContext context;
v8::HandleScope scope(CcTest::isolate());
CompileRun("function f() { a = 12345678 }; f();");
CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
CompileRun("function f(x) { a = 12345678 + x}; f(1);");
CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
CompileRun("function f(x) { var arguments = 1; x += 12345678}; f(1);");
CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
CompileRun("function f(x) { var arguments = 1; x = 12345678}; f(1);");
CheckCodeForUnsafeLiteral(GetJSFunction(context->Global(), "f"));
}
#endif