| // Copyright 2006-2008 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 "v8.h" |
| |
| #include "api.h" |
| #include "bootstrapper.h" |
| #include "builtins.h" |
| #include "ic-inl.h" |
| |
| namespace v8 { namespace internal { |
| |
| // ---------------------------------------------------------------------------- |
| // Support macros for defining builtins in C. |
| // ---------------------------------------------------------------------------- |
| // |
| // A builtin function is defined by writing: |
| // |
| // BUILTIN(name) { |
| // ... |
| // } |
| // BUILTIN_END |
| // |
| // In the body of the builtin function, the variable 'receiver' is visible. |
| // The arguments can be accessed through: |
| // |
| // BUILTIN_ARG(0): Receiver (also available as 'receiver') |
| // BUILTIN_ARG(1): First argument |
| // ... |
| // BUILTIN_ARG(n): Last argument |
| // |
| // and they evaluate to undefined values if too few arguments were |
| // passed to the builtin function invocation. |
| // |
| // __argc__ is the number of arguments including the receiver. |
| // ---------------------------------------------------------------------------- |
| |
| |
| // TODO(1238487): We should consider passing whether or not the |
| // builtin was invoked as a constructor as part of the |
| // arguments. Maybe we also want to pass the called function? |
| #define BUILTIN(name) \ |
| static Object* Builtin_##name(int __argc__, Object** __argv__) { \ |
| Handle<Object> receiver(&__argv__[0]); |
| |
| |
| // Use an inline function to avoid evaluating the index (n) more than |
| // once in the BUILTIN_ARG macro. |
| static inline Object* __builtin_arg__(int n, int argc, Object** argv) { |
| ASSERT(n >= 0); |
| return (argc > n) ? argv[-n] : Heap::undefined_value(); |
| } |
| |
| |
| // NOTE: Argument 0 is the receiver. The first 'real' argument is |
| // argument 1 - BUILTIN_ARG(1). |
| #define BUILTIN_ARG(n) (__builtin_arg__(n, __argc__, __argv__)) |
| |
| |
| #define BUILTIN_END \ |
| return Heap::undefined_value(); \ |
| } |
| |
| |
| // TODO(1238487): Get rid of this function that determines if the |
| // builtin is called as a constructor. This may be a somewhat slow |
| // operation due to the stack frame iteration. |
| static inline bool CalledAsConstructor() { |
| StackFrameIterator it; |
| ASSERT(it.frame()->is_exit()); |
| it.Advance(); |
| StackFrame* frame = it.frame(); |
| return frame->is_construct(); |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| |
| |
| Handle<Code> Builtins::GetCode(JavaScript id, bool* resolved) { |
| Code* code = Builtins::builtin(Builtins::Illegal); |
| *resolved = false; |
| |
| if (Top::context() != NULL) { |
| Object* object = Top::builtins()->javascript_builtin(id); |
| if (object->IsJSFunction()) { |
| Handle<JSFunction> function(JSFunction::cast(object)); |
| // Make sure the number of parameters match the formal parameter count. |
| ASSERT(function->shared()->formal_parameter_count() == |
| Builtins::GetArgumentsCount(id)); |
| if (function->is_compiled() || CompileLazy(function, CLEAR_EXCEPTION)) { |
| code = function->code(); |
| *resolved = true; |
| } |
| } |
| } |
| |
| return Handle<Code>(code); |
| } |
| |
| |
| BUILTIN(Illegal) { |
| UNREACHABLE(); |
| } |
| BUILTIN_END |
| |
| |
| BUILTIN(EmptyFunction) { |
| } |
| BUILTIN_END |
| |
| |
| BUILTIN(ArrayCode) { |
| JSArray* array; |
| if (CalledAsConstructor()) { |
| array = JSArray::cast(*receiver); |
| } else { |
| // Allocate the JS Array |
| JSFunction* constructor = |
| Top::context()->global_context()->array_function(); |
| Object* obj = Heap::AllocateJSObject(constructor); |
| if (obj->IsFailure()) return obj; |
| array = JSArray::cast(obj); |
| } |
| |
| // 'array' now contains the JSArray we should initialize. |
| |
| // Optimize the case where there is one argument and the argument is a |
| // small smi. |
| if (__argc__ == 2) { |
| Object* obj = BUILTIN_ARG(1); |
| if (obj->IsSmi()) { |
| int len = Smi::cast(obj)->value(); |
| if (len >= 0 && len < JSObject::kInitialMaxFastElementArray) { |
| Object* obj = Heap::AllocateFixedArrayWithHoles(len); |
| if (obj->IsFailure()) return obj; |
| array->SetContent(FixedArray::cast(obj)); |
| return array; |
| } |
| } |
| // Take the argument as the length. |
| obj = array->Initialize(0); |
| if (obj->IsFailure()) return obj; |
| if (__argc__ == 2) return array->SetElementsLength(BUILTIN_ARG(1)); |
| } |
| |
| // Optimize the case where there are no parameters passed. |
| if (__argc__ == 1) return array->Initialize(4); |
| |
| // Take the arguments as elements. |
| int number_of_elements = __argc__ - 1; |
| Smi* len = Smi::FromInt(number_of_elements); |
| Object* obj = Heap::AllocateFixedArrayWithHoles(len->value()); |
| if (obj->IsFailure()) return obj; |
| FixedArray* elms = FixedArray::cast(obj); |
| WriteBarrierMode mode = elms->GetWriteBarrierMode(); |
| // Fill in the content |
| for (int index = 0; index < number_of_elements; index++) { |
| elms->set(index, BUILTIN_ARG(index+1), mode); |
| } |
| |
| // Set length and elements on the array. |
| array->set_elements(FixedArray::cast(obj)); |
| array->set_length(len, SKIP_WRITE_BARRIER); |
| |
| return array; |
| } |
| BUILTIN_END |
| |
| |
| BUILTIN(ArrayPush) { |
| JSArray* array = JSArray::cast(*receiver); |
| ASSERT(array->HasFastElements()); |
| |
| // Make sure we have space for the elements. |
| int len = Smi::cast(array->length())->value(); |
| |
| // Set new length. |
| int new_length = len + __argc__ - 1; |
| FixedArray* elms = FixedArray::cast(array->elements()); |
| |
| if (new_length <= elms->length()) { |
| // Backing storage has extra space for the provided values. |
| for (int index = 0; index < __argc__ - 1; index++) { |
| elms->set(index + len, BUILTIN_ARG(index+1)); |
| } |
| } else { |
| // New backing storage is needed. |
| int capacity = new_length + (new_length >> 1) + 16; |
| Object* obj = Heap::AllocateFixedArrayWithHoles(capacity); |
| if (obj->IsFailure()) return obj; |
| FixedArray* new_elms = FixedArray::cast(obj); |
| WriteBarrierMode mode = new_elms->GetWriteBarrierMode(); |
| // Fill out the new array with old elements. |
| for (int i = 0; i < len; i++) new_elms->set(i, elms->get(i), mode); |
| // Add the provided values. |
| for (int index = 0; index < __argc__ - 1; index++) { |
| new_elms->set(index + len, BUILTIN_ARG(index+1), mode); |
| } |
| // Set the new backing storage. |
| array->set_elements(new_elms); |
| } |
| // Set the length. |
| array->set_length(Smi::FromInt(new_length), SKIP_WRITE_BARRIER); |
| return array->length(); |
| } |
| BUILTIN_END |
| |
| |
| BUILTIN(ArrayPop) { |
| JSArray* array = JSArray::cast(*receiver); |
| ASSERT(array->HasFastElements()); |
| Object* undefined = Heap::undefined_value(); |
| |
| int len = Smi::cast(array->length())->value(); |
| if (len == 0) return undefined; |
| |
| // Get top element |
| FixedArray* elms = FixedArray::cast(array->elements()); |
| Object* top = elms->get(len - 1); |
| |
| // Set the length. |
| array->set_length(Smi::FromInt(len - 1), SKIP_WRITE_BARRIER); |
| |
| if (!top->IsTheHole()) { |
| // Delete the top element. |
| elms->set_the_hole(len - 1); |
| return top; |
| } |
| |
| // Remember to check the prototype chain. |
| JSFunction* array_function = |
| Top::context()->global_context()->array_function(); |
| JSObject* prototype = JSObject::cast(array_function->prototype()); |
| top = prototype->GetElement(len - 1); |
| |
| return top; |
| } |
| BUILTIN_END |
| |
| |
| // ----------------------------------------------------------------------------- |
| // |
| |
| |
| // Returns the holder JSObject if the function can legally be called |
| // with this receiver. Returns Heap::null_value() if the call is |
| // illegal. Any arguments that don't fit the expected type is |
| // overwritten with undefined. Arguments that do fit the expected |
| // type is overwritten with the object in the prototype chain that |
| // actually has that type. |
| static inline Object* TypeCheck(int argc, |
| Object** argv, |
| FunctionTemplateInfo* info) { |
| Object* recv = argv[0]; |
| Object* sig_obj = info->signature(); |
| if (sig_obj->IsUndefined()) return recv; |
| SignatureInfo* sig = SignatureInfo::cast(sig_obj); |
| // If necessary, check the receiver |
| Object* recv_type = sig->receiver(); |
| |
| Object* holder = recv; |
| if (!recv_type->IsUndefined()) { |
| for (; holder != Heap::null_value(); holder = holder->GetPrototype()) { |
| if (holder->IsInstanceOf(FunctionTemplateInfo::cast(recv_type))) { |
| break; |
| } |
| } |
| if (holder == Heap::null_value()) return holder; |
| } |
| Object* args_obj = sig->args(); |
| // If there is no argument signature we're done |
| if (args_obj->IsUndefined()) return holder; |
| FixedArray* args = FixedArray::cast(args_obj); |
| int length = args->length(); |
| if (argc <= length) length = argc - 1; |
| for (int i = 0; i < length; i++) { |
| Object* argtype = args->get(i); |
| if (argtype->IsUndefined()) continue; |
| Object** arg = &argv[-1 - i]; |
| Object* current = *arg; |
| for (; current != Heap::null_value(); current = current->GetPrototype()) { |
| if (current->IsInstanceOf(FunctionTemplateInfo::cast(argtype))) { |
| *arg = current; |
| break; |
| } |
| } |
| if (current == Heap::null_value()) *arg = Heap::undefined_value(); |
| } |
| return holder; |
| } |
| |
| |
| BUILTIN(HandleApiCall) { |
| HandleScope scope; |
| bool is_construct = CalledAsConstructor(); |
| |
| // TODO(1238487): This is not nice. We need to get rid of this |
| // kludgy behavior and start handling API calls in a more direct |
| // way - maybe compile specialized stubs lazily?. |
| Handle<JSFunction> function = |
| Handle<JSFunction>(JSFunction::cast(Builtins::builtin_passed_function)); |
| |
| if (is_construct) { |
| Handle<FunctionTemplateInfo> desc = |
| Handle<FunctionTemplateInfo>( |
| FunctionTemplateInfo::cast(function->shared()->function_data())); |
| bool pending_exception = false; |
| Factory::ConfigureInstance(desc, Handle<JSObject>::cast(receiver), |
| &pending_exception); |
| ASSERT(Top::has_pending_exception() == pending_exception); |
| if (pending_exception) return Failure::Exception(); |
| } |
| |
| FunctionTemplateInfo* fun_data = |
| FunctionTemplateInfo::cast(function->shared()->function_data()); |
| Object* raw_holder = TypeCheck(__argc__, __argv__, fun_data); |
| |
| if (raw_holder->IsNull()) { |
| // This function cannot be called with the given receiver. Abort! |
| Handle<Object> obj = |
| Factory::NewTypeError("illegal_invocation", HandleVector(&function, 1)); |
| return Top::Throw(*obj); |
| } |
| |
| Object* raw_call_data = fun_data->call_code(); |
| if (!raw_call_data->IsUndefined()) { |
| CallHandlerInfo* call_data = CallHandlerInfo::cast(raw_call_data); |
| Object* callback_obj = call_data->callback(); |
| v8::InvocationCallback callback = |
| v8::ToCData<v8::InvocationCallback>(callback_obj); |
| Object* data_obj = call_data->data(); |
| Object* result; |
| |
| v8::Local<v8::Object> self = |
| v8::Utils::ToLocal(Handle<JSObject>::cast(receiver)); |
| Handle<Object> data_handle(data_obj); |
| v8::Local<v8::Value> data = v8::Utils::ToLocal(data_handle); |
| ASSERT(raw_holder->IsJSObject()); |
| v8::Local<v8::Function> callee = v8::Utils::ToLocal(function); |
| Handle<JSObject> holder_handle(JSObject::cast(raw_holder)); |
| v8::Local<v8::Object> holder = v8::Utils::ToLocal(holder_handle); |
| LOG(ApiObjectAccess("call", JSObject::cast(*receiver))); |
| v8::Arguments args = v8::ImplementationUtilities::NewArguments( |
| data, |
| holder, |
| callee, |
| is_construct, |
| reinterpret_cast<void**>(__argv__ - 1), |
| __argc__ - 1); |
| |
| v8::Handle<v8::Value> value; |
| { |
| // Leaving JavaScript. |
| VMState state(EXTERNAL); |
| value = callback(args); |
| } |
| if (value.IsEmpty()) { |
| result = Heap::undefined_value(); |
| } else { |
| result = *reinterpret_cast<Object**>(*value); |
| } |
| |
| RETURN_IF_SCHEDULED_EXCEPTION(); |
| if (!is_construct || result->IsJSObject()) return result; |
| } |
| |
| return *receiver; |
| } |
| BUILTIN_END |
| |
| |
| // Handle calls to non-function objects created through the API that |
| // support calls. |
| BUILTIN(HandleApiCallAsFunction) { |
| // Non-functions are never called as constructors. |
| ASSERT(!CalledAsConstructor()); |
| |
| // Get the object called. |
| JSObject* obj = JSObject::cast(*receiver); |
| |
| // Get the invocation callback from the function descriptor that was |
| // used to create the called object. |
| ASSERT(obj->map()->has_instance_call_handler()); |
| JSFunction* constructor = JSFunction::cast(obj->map()->constructor()); |
| Object* template_info = constructor->shared()->function_data(); |
| Object* handler = |
| FunctionTemplateInfo::cast(template_info)->instance_call_handler(); |
| ASSERT(!handler->IsUndefined()); |
| CallHandlerInfo* call_data = CallHandlerInfo::cast(handler); |
| Object* callback_obj = call_data->callback(); |
| v8::InvocationCallback callback = |
| v8::ToCData<v8::InvocationCallback>(callback_obj); |
| |
| // Get the data for the call and perform the callback. |
| Object* data_obj = call_data->data(); |
| Object* result; |
| { HandleScope scope; |
| v8::Local<v8::Object> self = |
| v8::Utils::ToLocal(Handle<JSObject>::cast(receiver)); |
| Handle<Object> data_handle(data_obj); |
| v8::Local<v8::Value> data = v8::Utils::ToLocal(data_handle); |
| Handle<JSFunction> callee_handle(constructor); |
| v8::Local<v8::Function> callee = v8::Utils::ToLocal(callee_handle); |
| LOG(ApiObjectAccess("call non-function", JSObject::cast(*receiver))); |
| v8::Arguments args = v8::ImplementationUtilities::NewArguments( |
| data, |
| self, |
| callee, |
| false, |
| reinterpret_cast<void**>(__argv__ - 1), |
| __argc__ - 1); |
| v8::Handle<v8::Value> value; |
| { |
| // Leaving JavaScript. |
| VMState state(EXTERNAL); |
| value = callback(args); |
| } |
| if (value.IsEmpty()) { |
| result = Heap::undefined_value(); |
| } else { |
| result = *reinterpret_cast<Object**>(*value); |
| } |
| } |
| // Check for exceptions and return result. |
| RETURN_IF_SCHEDULED_EXCEPTION(); |
| return result; |
| } |
| BUILTIN_END |
| |
| |
| // TODO(1238487): This is a nasty hack. We need to improve the way we |
| // call builtins considerable to get rid of this and the hairy macros |
| // in builtins.cc. |
| Object* Builtins::builtin_passed_function; |
| |
| |
| |
| static void Generate_LoadIC_ArrayLength(MacroAssembler* masm) { |
| LoadIC::GenerateArrayLength(masm); |
| } |
| |
| |
| static void Generate_LoadIC_StringLength(MacroAssembler* masm) { |
| LoadIC::GenerateStringLength(masm); |
| } |
| |
| |
| static void Generate_LoadIC_FunctionPrototype(MacroAssembler* masm) { |
| LoadIC::GenerateFunctionPrototype(masm); |
| } |
| |
| |
| static void Generate_LoadIC_Initialize(MacroAssembler* masm) { |
| LoadIC::GenerateInitialize(masm); |
| } |
| |
| |
| static void Generate_LoadIC_PreMonomorphic(MacroAssembler* masm) { |
| LoadIC::GeneratePreMonomorphic(masm); |
| } |
| |
| |
| static void Generate_LoadIC_Miss(MacroAssembler* masm) { |
| LoadIC::GenerateMiss(masm); |
| } |
| |
| |
| static void Generate_LoadIC_Megamorphic(MacroAssembler* masm) { |
| LoadIC::GenerateMegamorphic(masm); |
| } |
| |
| |
| static void Generate_LoadIC_Normal(MacroAssembler* masm) { |
| LoadIC::GenerateNormal(masm); |
| } |
| |
| |
| static void Generate_KeyedLoadIC_Initialize(MacroAssembler* masm) { |
| KeyedLoadIC::GenerateInitialize(masm); |
| } |
| |
| |
| static void Generate_KeyedLoadIC_Miss(MacroAssembler* masm) { |
| KeyedLoadIC::GenerateMiss(masm); |
| } |
| |
| |
| static void Generate_KeyedLoadIC_Generic(MacroAssembler* masm) { |
| KeyedLoadIC::GenerateGeneric(masm); |
| } |
| |
| |
| static void Generate_KeyedLoadIC_PreMonomorphic(MacroAssembler* masm) { |
| KeyedLoadIC::GeneratePreMonomorphic(masm); |
| } |
| |
| |
| static void Generate_StoreIC_Initialize(MacroAssembler* masm) { |
| StoreIC::GenerateInitialize(masm); |
| } |
| |
| |
| static void Generate_StoreIC_Miss(MacroAssembler* masm) { |
| StoreIC::GenerateMiss(masm); |
| } |
| |
| |
| static void Generate_StoreIC_ExtendStorage(MacroAssembler* masm) { |
| StoreIC::GenerateExtendStorage(masm); |
| } |
| |
| static void Generate_StoreIC_Megamorphic(MacroAssembler* masm) { |
| StoreIC::GenerateMegamorphic(masm); |
| } |
| |
| |
| static void Generate_KeyedStoreIC_Generic(MacroAssembler* masm) { |
| KeyedStoreIC::GenerateGeneric(masm); |
| } |
| |
| |
| static void Generate_KeyedStoreIC_ExtendStorage(MacroAssembler* masm) { |
| KeyedStoreIC::GenerateExtendStorage(masm); |
| } |
| |
| |
| static void Generate_KeyedStoreIC_Miss(MacroAssembler* masm) { |
| KeyedStoreIC::GenerateMiss(masm); |
| } |
| |
| |
| static void Generate_KeyedStoreIC_Initialize(MacroAssembler* masm) { |
| KeyedStoreIC::GenerateInitialize(masm); |
| } |
| |
| |
| #ifdef ENABLE_DEBUGGER_SUPPORT |
| static void Generate_LoadIC_DebugBreak(MacroAssembler* masm) { |
| Debug::GenerateLoadICDebugBreak(masm); |
| } |
| |
| |
| static void Generate_StoreIC_DebugBreak(MacroAssembler* masm) { |
| Debug::GenerateStoreICDebugBreak(masm); |
| } |
| |
| |
| static void Generate_KeyedLoadIC_DebugBreak(MacroAssembler* masm) { |
| Debug::GenerateKeyedLoadICDebugBreak(masm); |
| } |
| |
| |
| static void Generate_KeyedStoreIC_DebugBreak(MacroAssembler* masm) { |
| Debug::GenerateKeyedStoreICDebugBreak(masm); |
| } |
| |
| |
| static void Generate_ConstructCall_DebugBreak(MacroAssembler* masm) { |
| Debug::GenerateConstructCallDebugBreak(masm); |
| } |
| |
| |
| static void Generate_Return_DebugBreak(MacroAssembler* masm) { |
| Debug::GenerateReturnDebugBreak(masm); |
| } |
| |
| |
| static void Generate_Return_DebugBreakEntry(MacroAssembler* masm) { |
| Debug::GenerateReturnDebugBreakEntry(masm); |
| } |
| |
| |
| static void Generate_StubNoRegisters_DebugBreak(MacroAssembler* masm) { |
| Debug::GenerateStubNoRegistersDebugBreak(masm); |
| } |
| #endif |
| |
| Object* Builtins::builtins_[builtin_count] = { NULL, }; |
| const char* Builtins::names_[builtin_count] = { NULL, }; |
| |
| #define DEF_ENUM_C(name) FUNCTION_ADDR(Builtin_##name), |
| Address Builtins::c_functions_[cfunction_count] = { |
| BUILTIN_LIST_C(DEF_ENUM_C) |
| }; |
| #undef DEF_ENUM_C |
| |
| #define DEF_JS_NAME(name, ignore) #name, |
| #define DEF_JS_ARGC(ignore, argc) argc, |
| const char* Builtins::javascript_names_[id_count] = { |
| BUILTINS_LIST_JS(DEF_JS_NAME) |
| }; |
| |
| int Builtins::javascript_argc_[id_count] = { |
| BUILTINS_LIST_JS(DEF_JS_ARGC) |
| }; |
| #undef DEF_JS_NAME |
| #undef DEF_JS_ARGC |
| |
| static bool is_initialized = false; |
| void Builtins::Setup(bool create_heap_objects) { |
| ASSERT(!is_initialized); |
| |
| // Create a scope for the handles in the builtins. |
| HandleScope scope; |
| |
| struct BuiltinDesc { |
| byte* generator; |
| byte* c_code; |
| const char* s_name; // name is only used for generating log information. |
| int name; |
| Code::Flags flags; |
| }; |
| |
| #define DEF_FUNCTION_PTR_C(name) \ |
| { FUNCTION_ADDR(Generate_Adaptor), \ |
| FUNCTION_ADDR(Builtin_##name), \ |
| #name, \ |
| c_##name, \ |
| Code::ComputeFlags(Code::BUILTIN) \ |
| }, |
| |
| #define DEF_FUNCTION_PTR_A(name, kind, state) \ |
| { FUNCTION_ADDR(Generate_##name), \ |
| NULL, \ |
| #name, \ |
| name, \ |
| Code::ComputeFlags(Code::kind, state) \ |
| }, |
| |
| // Define array of pointers to generators and C builtin functions. |
| static BuiltinDesc functions[] = { |
| BUILTIN_LIST_C(DEF_FUNCTION_PTR_C) |
| BUILTIN_LIST_A(DEF_FUNCTION_PTR_A) |
| BUILTIN_LIST_DEBUG_A(DEF_FUNCTION_PTR_A) |
| // Terminator: |
| { NULL, NULL, NULL, builtin_count, static_cast<Code::Flags>(0) } |
| }; |
| |
| #undef DEF_FUNCTION_PTR_C |
| #undef DEF_FUNCTION_PTR_A |
| |
| // For now we generate builtin adaptor code into a stack-allocated |
| // buffer, before copying it into individual code objects. |
| byte buffer[4*KB]; |
| |
| // Traverse the list of builtins and generate an adaptor in a |
| // separate code object for each one. |
| for (int i = 0; i < builtin_count; i++) { |
| if (create_heap_objects) { |
| MacroAssembler masm(buffer, sizeof buffer); |
| // Generate the code/adaptor. |
| typedef void (*Generator)(MacroAssembler*, int); |
| Generator g = FUNCTION_CAST<Generator>(functions[i].generator); |
| // We pass all arguments to the generator, but it may not use all of |
| // them. This works because the first arguments are on top of the |
| // stack. |
| g(&masm, functions[i].name); |
| // Move the code into the object heap. |
| CodeDesc desc; |
| masm.GetCode(&desc); |
| Code::Flags flags = functions[i].flags; |
| Object* code; |
| { |
| // During startup it's OK to always allocate and defer GC to later. |
| // This simplifies things because we don't need to retry. |
| AlwaysAllocateScope __scope__; |
| code = Heap::CreateCode(desc, NULL, flags, masm.CodeObject()); |
| if (code->IsFailure()) { |
| v8::internal::V8::FatalProcessOutOfMemory("CreateCode"); |
| } |
| } |
| // Add any unresolved jumps or calls to the fixup list in the |
| // bootstrapper. |
| Bootstrapper::AddFixup(Code::cast(code), &masm); |
| // Log the event and add the code to the builtins array. |
| LOG(CodeCreateEvent("Builtin", Code::cast(code), functions[i].s_name)); |
| builtins_[i] = code; |
| #ifdef ENABLE_DISASSEMBLER |
| if (FLAG_print_builtin_code) { |
| PrintF("Builtin: %s\n", functions[i].s_name); |
| Code::cast(code)->Disassemble(functions[i].s_name); |
| PrintF("\n"); |
| } |
| #endif |
| } else { |
| // Deserializing. The values will be filled in during IterateBuiltins. |
| builtins_[i] = NULL; |
| } |
| names_[i] = functions[i].s_name; |
| } |
| |
| // Mark as initialized. |
| is_initialized = true; |
| } |
| |
| |
| void Builtins::TearDown() { |
| is_initialized = false; |
| } |
| |
| |
| void Builtins::IterateBuiltins(ObjectVisitor* v) { |
| v->VisitPointers(&builtins_[0], &builtins_[0] + builtin_count); |
| } |
| |
| |
| const char* Builtins::Lookup(byte* pc) { |
| if (is_initialized) { // may be called during initialization (disassembler!) |
| for (int i = 0; i < builtin_count; i++) { |
| Code* entry = Code::cast(builtins_[i]); |
| if (entry->contains(pc)) { |
| return names_[i]; |
| } |
| } |
| } |
| return NULL; |
| } |
| |
| |
| } } // namespace v8::internal |