1// Copyright 2012 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28#include <stdlib.h> 29#include <wchar.h> 30 31#include "v8.h" 32 33#include "compiler.h" 34#include "disasm.h" 35#include "disassembler.h" 36#include "execution.h" 37#include "factory.h" 38#include "platform.h" 39#include "cctest.h" 40 41using namespace v8::internal; 42 43static v8::Persistent<v8::Context> env; 44 45// --- P r i n t E x t e n s i o n --- 46 47class PrintExtension : public v8::Extension { 48 public: 49 PrintExtension() : v8::Extension("v8/print", kSource) { } 50 virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction( 51 v8::Handle<v8::String> name); 52 static v8::Handle<v8::Value> Print(const v8::Arguments& args); 53 private: 54 static const char* kSource; 55}; 56 57 58const char* PrintExtension::kSource = "native function print();"; 59 60 61v8::Handle<v8::FunctionTemplate> PrintExtension::GetNativeFunction( 62 v8::Handle<v8::String> str) { 63 return v8::FunctionTemplate::New(PrintExtension::Print); 64} 65 66 67v8::Handle<v8::Value> PrintExtension::Print(const v8::Arguments& args) { 68 for (int i = 0; i < args.Length(); i++) { 69 if (i != 0) printf(" "); 70 v8::HandleScope scope; 71 v8::Handle<v8::Value> arg = args[i]; 72 v8::Handle<v8::String> string_obj = arg->ToString(); 73 if (string_obj.IsEmpty()) return string_obj; 74 int length = string_obj->Length(); 75 uint16_t* string = NewArray<uint16_t>(length + 1); 76 string_obj->Write(string); 77 for (int j = 0; j < length; j++) 78 printf("%lc", static_cast<wchar_t>(string[j])); 79 DeleteArray(string); 80 } 81 printf("\n"); 82 return v8::Undefined(); 83} 84 85 86static PrintExtension kPrintExtension; 87v8::DeclareExtension kPrintExtensionDeclaration(&kPrintExtension); 88 89 90static void InitializeVM() { 91 if (env.IsEmpty()) { 92 v8::HandleScope scope; 93 const char* extensions[] = { "v8/print", "v8/gc" }; 94 v8::ExtensionConfiguration config(2, extensions); 95 env = v8::Context::New(&config); 96 } 97 v8::HandleScope scope; 98 env->Enter(); 99} 100 101 102static MaybeObject* GetGlobalProperty(const char* name) { 103 Handle<String> symbol = FACTORY->LookupAsciiSymbol(name); 104 return Isolate::Current()->context()->global()->GetProperty(*symbol); 105} 106 107 108static void SetGlobalProperty(const char* name, Object* value) { 109 Handle<Object> object(value); 110 Handle<String> symbol = FACTORY->LookupAsciiSymbol(name); 111 Handle<JSObject> global(Isolate::Current()->context()->global()); 112 SetProperty(global, symbol, object, NONE, kNonStrictMode); 113} 114 115 116static Handle<JSFunction> Compile(const char* source) { 117 Handle<String> source_code(FACTORY->NewStringFromUtf8(CStrVector(source))); 118 Handle<SharedFunctionInfo> shared_function = 119 Compiler::Compile(source_code, 120 Handle<String>(), 121 0, 122 0, 123 NULL, 124 NULL, 125 Handle<String>::null(), 126 NOT_NATIVES_CODE); 127 return FACTORY->NewFunctionFromSharedFunctionInfo(shared_function, 128 Isolate::Current()->global_context()); 129} 130 131 132static double Inc(int x) { 133 const char* source = "result = %d + 1;"; 134 EmbeddedVector<char, 512> buffer; 135 OS::SNPrintF(buffer, source, x); 136 137 Handle<JSFunction> fun = Compile(buffer.start()); 138 if (fun.is_null()) return -1; 139 140 bool has_pending_exception; 141 Handle<JSObject> global(Isolate::Current()->context()->global()); 142 Execution::Call(fun, global, 0, NULL, &has_pending_exception); 143 CHECK(!has_pending_exception); 144 return GetGlobalProperty("result")->ToObjectChecked()->Number(); 145} 146 147 148TEST(Inc) { 149 InitializeVM(); 150 v8::HandleScope scope; 151 CHECK_EQ(4.0, Inc(3)); 152} 153 154 155static double Add(int x, int y) { 156 Handle<JSFunction> fun = Compile("result = x + y;"); 157 if (fun.is_null()) return -1; 158 159 SetGlobalProperty("x", Smi::FromInt(x)); 160 SetGlobalProperty("y", Smi::FromInt(y)); 161 bool has_pending_exception; 162 Handle<JSObject> global(Isolate::Current()->context()->global()); 163 Execution::Call(fun, global, 0, NULL, &has_pending_exception); 164 CHECK(!has_pending_exception); 165 return GetGlobalProperty("result")->ToObjectChecked()->Number(); 166} 167 168 169TEST(Add) { 170 InitializeVM(); 171 v8::HandleScope scope; 172 CHECK_EQ(5.0, Add(2, 3)); 173} 174 175 176static double Abs(int x) { 177 Handle<JSFunction> fun = Compile("if (x < 0) result = -x; else result = x;"); 178 if (fun.is_null()) return -1; 179 180 SetGlobalProperty("x", Smi::FromInt(x)); 181 bool has_pending_exception; 182 Handle<JSObject> global(Isolate::Current()->context()->global()); 183 Execution::Call(fun, global, 0, NULL, &has_pending_exception); 184 CHECK(!has_pending_exception); 185 return GetGlobalProperty("result")->ToObjectChecked()->Number(); 186} 187 188 189TEST(Abs) { 190 InitializeVM(); 191 v8::HandleScope scope; 192 CHECK_EQ(3.0, Abs(-3)); 193} 194 195 196static double Sum(int n) { 197 Handle<JSFunction> fun = 198 Compile("s = 0; while (n > 0) { s += n; n -= 1; }; result = s;"); 199 if (fun.is_null()) return -1; 200 201 SetGlobalProperty("n", Smi::FromInt(n)); 202 bool has_pending_exception; 203 Handle<JSObject> global(Isolate::Current()->context()->global()); 204 Execution::Call(fun, global, 0, NULL, &has_pending_exception); 205 CHECK(!has_pending_exception); 206 return GetGlobalProperty("result")->ToObjectChecked()->Number(); 207} 208 209 210TEST(Sum) { 211 InitializeVM(); 212 v8::HandleScope scope; 213 CHECK_EQ(5050.0, Sum(100)); 214} 215 216 217TEST(Print) { 218 InitializeVM(); 219 v8::HandleScope scope; 220 const char* source = "for (n = 0; n < 100; ++n) print(n, 1, 2);"; 221 Handle<JSFunction> fun = Compile(source); 222 if (fun.is_null()) return; 223 bool has_pending_exception; 224 Handle<JSObject> global(Isolate::Current()->context()->global()); 225 Execution::Call(fun, global, 0, NULL, &has_pending_exception); 226 CHECK(!has_pending_exception); 227} 228 229 230// The following test method stems from my coding efforts today. It 231// tests all the functionality I have added to the compiler today 232TEST(Stuff) { 233 InitializeVM(); 234 v8::HandleScope scope; 235 const char* source = 236 "r = 0;\n" 237 "a = new Object;\n" 238 "if (a == a) r+=1;\n" // 1 239 "if (a != new Object()) r+=2;\n" // 2 240 "a.x = 42;\n" 241 "if (a.x == 42) r+=4;\n" // 4 242 "function foo() { var x = 87; return x; }\n" 243 "if (foo() == 87) r+=8;\n" // 8 244 "function bar() { var x; x = 99; return x; }\n" 245 "if (bar() == 99) r+=16;\n" // 16 246 "function baz() { var x = 1, y, z = 2; y = 3; return x + y + z; }\n" 247 "if (baz() == 6) r+=32;\n" // 32 248 "function Cons0() { this.x = 42; this.y = 87; }\n" 249 "if (new Cons0().x == 42) r+=64;\n" // 64 250 "if (new Cons0().y == 87) r+=128;\n" // 128 251 "function Cons2(x, y) { this.sum = x + y; }\n" 252 "if (new Cons2(3,4).sum == 7) r+=256;"; // 256 253 254 Handle<JSFunction> fun = Compile(source); 255 CHECK(!fun.is_null()); 256 bool has_pending_exception; 257 Handle<JSObject> global(Isolate::Current()->context()->global()); 258 Execution::Call(fun, global, 0, NULL, &has_pending_exception); 259 CHECK(!has_pending_exception); 260 CHECK_EQ(511.0, GetGlobalProperty("r")->ToObjectChecked()->Number()); 261} 262 263 264TEST(UncaughtThrow) { 265 InitializeVM(); 266 v8::HandleScope scope; 267 268 const char* source = "throw 42;"; 269 Handle<JSFunction> fun = Compile(source); 270 CHECK(!fun.is_null()); 271 bool has_pending_exception; 272 Handle<JSObject> global(Isolate::Current()->context()->global()); 273 Execution::Call(fun, global, 0, NULL, &has_pending_exception); 274 CHECK(has_pending_exception); 275 CHECK_EQ(42.0, Isolate::Current()->pending_exception()-> 276 ToObjectChecked()->Number()); 277} 278 279 280// Tests calling a builtin function from C/C++ code, and the builtin function 281// performs GC. It creates a stack frame looks like following: 282// | C (PerformGC) | 283// | JS-to-C | 284// | JS | 285// | C-to-JS | 286TEST(C2JSFrames) { 287 InitializeVM(); 288 v8::HandleScope scope; 289 290 const char* source = "function foo(a) { gc(), print(a); }"; 291 292 Handle<JSFunction> fun0 = Compile(source); 293 CHECK(!fun0.is_null()); 294 295 // Run the generated code to populate the global object with 'foo'. 296 bool has_pending_exception; 297 Handle<JSObject> global(Isolate::Current()->context()->global()); 298 Execution::Call(fun0, global, 0, NULL, &has_pending_exception); 299 CHECK(!has_pending_exception); 300 301 Object* foo_symbol = FACTORY->LookupAsciiSymbol("foo")->ToObjectChecked(); 302 MaybeObject* fun1_object = Isolate::Current()->context()->global()-> 303 GetProperty(String::cast(foo_symbol)); 304 Handle<Object> fun1(fun1_object->ToObjectChecked()); 305 CHECK(fun1->IsJSFunction()); 306 307 Handle<Object> argv[] = { FACTORY->LookupAsciiSymbol("hello") }; 308 Execution::Call(Handle<JSFunction>::cast(fun1), 309 global, 310 ARRAY_SIZE(argv), 311 argv, 312 &has_pending_exception); 313 CHECK(!has_pending_exception); 314} 315 316 317// Regression 236. Calling InitLineEnds on a Script with undefined 318// source resulted in crash. 319TEST(Regression236) { 320 InitializeVM(); 321 v8::HandleScope scope; 322 323 Handle<Script> script = FACTORY->NewScript(FACTORY->empty_string()); 324 script->set_source(HEAP->undefined_value()); 325 CHECK_EQ(-1, GetScriptLineNumber(script, 0)); 326 CHECK_EQ(-1, GetScriptLineNumber(script, 100)); 327 CHECK_EQ(-1, GetScriptLineNumber(script, -1)); 328} 329 330 331TEST(GetScriptLineNumber) { 332 LocalContext env; 333 v8::HandleScope scope; 334 v8::ScriptOrigin origin = v8::ScriptOrigin(v8::String::New("test")); 335 const char function_f[] = "function f() {}"; 336 const int max_rows = 1000; 337 const int buffer_size = max_rows + sizeof(function_f); 338 ScopedVector<char> buffer(buffer_size); 339 memset(buffer.start(), '\n', buffer_size - 1); 340 buffer[buffer_size - 1] = '\0'; 341 342 for (int i = 0; i < max_rows; ++i) { 343 if (i > 0) 344 buffer[i - 1] = '\n'; 345 memcpy(&buffer[i], function_f, sizeof(function_f) - 1); 346 v8::Handle<v8::String> script_body = v8::String::New(buffer.start()); 347 v8::Script::Compile(script_body, &origin)->Run(); 348 v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast( 349 env->Global()->Get(v8::String::New("f"))); 350 CHECK_EQ(i, f->GetScriptLineNumber()); 351 } 352} 353 354 355#ifdef ENABLE_DISASSEMBLER 356static Handle<JSFunction> GetJSFunction(v8::Handle<v8::Object> obj, 357 const char* property_name) { 358 v8::Local<v8::Function> fun = 359 v8::Local<v8::Function>::Cast(obj->Get(v8_str(property_name))); 360 return v8::Utils::OpenHandle(*fun); 361} 362 363 364static void CheckCodeForUnsafeLiteral(Handle<JSFunction> f) { 365 // Create a disassembler with default name lookup. 366 disasm::NameConverter name_converter; 367 disasm::Disassembler d(name_converter); 368 369 if (f->code()->kind() == Code::FUNCTION) { 370 Address pc = f->code()->instruction_start(); 371 int decode_size = 372 Min(f->code()->instruction_size(), 373 static_cast<int>(f->code()->stack_check_table_offset())); 374 Address end = pc + decode_size; 375 376 v8::internal::EmbeddedVector<char, 128> decode_buffer; 377 while (pc < end) { 378 int num_const = d.ConstantPoolSizeAt(pc); 379 if (num_const >= 0) { 380 pc += (num_const + 1) * kPointerSize; 381 } else { 382 pc += d.InstructionDecode(decode_buffer, pc); 383 CHECK(strstr(decode_buffer.start(), "mov eax,0x178c29c") == NULL); 384 CHECK(strstr(decode_buffer.start(), "push 0x178c29c") == NULL); 385 CHECK(strstr(decode_buffer.start(), "0x178c29c") == NULL); 386 } 387 } 388 } 389} 390 391 392TEST(SplitConstantsInFullCompiler) { 393 v8::HandleScope scope; 394 LocalContext env; 395 396 CompileRun("function f() { a = 12345678 }; f();"); 397 CheckCodeForUnsafeLiteral(GetJSFunction(env->Global(), "f")); 398 CompileRun("function f(x) { a = 12345678 + x}; f(1);"); 399 CheckCodeForUnsafeLiteral(GetJSFunction(env->Global(), "f")); 400 CompileRun("function f(x) { var arguments = 1; x += 12345678}; f(1);"); 401 CheckCodeForUnsafeLiteral(GetJSFunction(env->Global(), "f")); 402 CompileRun("function f(x) { var arguments = 1; x = 12345678}; f(1);"); 403 CheckCodeForUnsafeLiteral(GetJSFunction(env->Global(), "f")); 404} 405#endif 406