// Copyright 2012 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. #if V8_TARGET_ARCH_MIPS #include "src/codegen.h" #include "src/debug/debug.h" #include "src/deoptimizer.h" #include "src/full-codegen/full-codegen.h" #include "src/runtime/runtime.h" namespace v8 { namespace internal { #define __ ACCESS_MASM(masm) void Builtins::Generate_Adaptor(MacroAssembler* masm, CFunctionId id, BuiltinExtraArguments extra_args) { // ----------- S t a t e ------------- // -- a0 : number of arguments excluding receiver // -- a1 : target // -- a3 : new.target // -- sp[0] : last argument // -- ... // -- sp[4 * (argc - 1)] : first argument // -- sp[4 * agrc] : receiver // ----------------------------------- __ AssertFunction(a1); // Make sure we operate in the context of the called function (for example // ConstructStubs implemented in C++ will be run in the context of the caller // instead of the callee, due to the way that [[Construct]] is defined for // ordinary functions). __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); // Insert extra arguments. int num_extra_args = 0; switch (extra_args) { case BuiltinExtraArguments::kTarget: __ Push(a1); ++num_extra_args; break; case BuiltinExtraArguments::kNewTarget: __ Push(a3); ++num_extra_args; break; case BuiltinExtraArguments::kTargetAndNewTarget: __ Push(a1, a3); num_extra_args += 2; break; case BuiltinExtraArguments::kNone: break; } // JumpToExternalReference expects a0 to contain the number of arguments // including the receiver and the extra arguments. __ Addu(a0, a0, num_extra_args + 1); __ JumpToExternalReference(ExternalReference(id, masm->isolate())); } // Load the built-in InternalArray function from the current context. static void GenerateLoadInternalArrayFunction(MacroAssembler* masm, Register result) { // Load the InternalArray function from the native context. __ LoadNativeContextSlot(Context::INTERNAL_ARRAY_FUNCTION_INDEX, result); } // Load the built-in Array function from the current context. static void GenerateLoadArrayFunction(MacroAssembler* masm, Register result) { // Load the Array function from the native context. __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, result); } void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : number of arguments // -- ra : return address // -- sp[...]: constructor arguments // ----------------------------------- Label generic_array_code, one_or_more_arguments, two_or_more_arguments; // Get the InternalArray function. GenerateLoadInternalArrayFunction(masm, a1); if (FLAG_debug_code) { // Initial map for the builtin InternalArray functions should be maps. __ lw(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset)); __ SmiTst(a2, t0); __ Assert(ne, kUnexpectedInitialMapForInternalArrayFunction, t0, Operand(zero_reg)); __ GetObjectType(a2, a3, t0); __ Assert(eq, kUnexpectedInitialMapForInternalArrayFunction, t0, Operand(MAP_TYPE)); } // Run the native code for the InternalArray function called as a normal // function. // Tail call a stub. InternalArrayConstructorStub stub(masm->isolate()); __ TailCallStub(&stub); } void Builtins::Generate_ArrayCode(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : number of arguments // -- ra : return address // -- sp[...]: constructor arguments // ----------------------------------- Label generic_array_code; // Get the Array function. GenerateLoadArrayFunction(masm, a1); if (FLAG_debug_code) { // Initial map for the builtin Array functions should be maps. __ lw(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset)); __ SmiTst(a2, t0); __ Assert(ne, kUnexpectedInitialMapForArrayFunction1, t0, Operand(zero_reg)); __ GetObjectType(a2, a3, t0); __ Assert(eq, kUnexpectedInitialMapForArrayFunction2, t0, Operand(MAP_TYPE)); } // Run the native code for the Array function called as a normal function. // Tail call a stub. __ mov(a3, a1); __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); ArrayConstructorStub stub(masm->isolate()); __ TailCallStub(&stub); } // static void Builtins::Generate_NumberConstructor(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : number of arguments // -- a1 : constructor function // -- ra : return address // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) // -- sp[argc * 4] : receiver // ----------------------------------- // 1. Load the first argument into a0 and get rid of the rest (including the // receiver). Label no_arguments; { __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg)); __ Subu(a0, a0, Operand(1)); __ sll(a0, a0, kPointerSizeLog2); __ Addu(sp, a0, sp); __ lw(a0, MemOperand(sp)); __ Drop(2); } // 2a. Convert first argument to number. ToNumberStub stub(masm->isolate()); __ TailCallStub(&stub); // 2b. No arguments, return +0. __ bind(&no_arguments); __ Move(v0, Smi::FromInt(0)); __ DropAndRet(1); } // static void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : number of arguments // -- a1 : constructor function // -- a3 : new target // -- ra : return address // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) // -- sp[argc * 4] : receiver // ----------------------------------- // 1. Make sure we operate in the context of the called function. __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); // 2. Load the first argument into a0 and get rid of the rest (including the // receiver). { Label no_arguments, done; __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg)); __ Subu(a0, a0, Operand(1)); __ sll(a0, a0, kPointerSizeLog2); __ Addu(sp, a0, sp); __ lw(a0, MemOperand(sp)); __ Drop(2); __ jmp(&done); __ bind(&no_arguments); __ Move(a0, Smi::FromInt(0)); __ Drop(1); __ bind(&done); } // 3. Make sure a0 is a number. { Label done_convert; __ JumpIfSmi(a0, &done_convert); __ GetObjectType(a0, a2, a2); __ Branch(&done_convert, eq, a2, Operand(HEAP_NUMBER_TYPE)); { FrameScope scope(masm, StackFrame::INTERNAL); __ Push(a1, a3); ToNumberStub stub(masm->isolate()); __ CallStub(&stub); __ Move(a0, v0); __ Pop(a1, a3); } __ bind(&done_convert); } // 4. Check if new target and constructor differ. Label new_object; __ Branch(&new_object, ne, a1, Operand(a3)); // 5. Allocate a JSValue wrapper for the number. __ AllocateJSValue(v0, a1, a0, a2, t0, &new_object); __ Ret(); // 6. Fallback to the runtime to create new object. __ bind(&new_object); { FrameScope scope(masm, StackFrame::INTERNAL); __ Push(a0, a1, a3); // first argument, constructor, new target __ CallRuntime(Runtime::kNewObject); __ Pop(a0); } __ Ret(USE_DELAY_SLOT); __ sw(a0, FieldMemOperand(v0, JSValue::kValueOffset)); // In delay slot } // static void Builtins::Generate_StringConstructor(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : number of arguments // -- a1 : constructor function // -- ra : return address // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) // -- sp[argc * 4] : receiver // ----------------------------------- // 1. Load the first argument into a0 and get rid of the rest (including the // receiver). Label no_arguments; { __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg)); __ Subu(a0, a0, Operand(1)); __ sll(a0, a0, kPointerSizeLog2); __ Addu(sp, a0, sp); __ lw(a0, MemOperand(sp)); __ Drop(2); } // 2a. At least one argument, return a0 if it's a string, otherwise // dispatch to appropriate conversion. Label to_string, symbol_descriptive_string; { __ JumpIfSmi(a0, &to_string); __ GetObjectType(a0, a1, a1); STATIC_ASSERT(FIRST_NONSTRING_TYPE == SYMBOL_TYPE); __ Subu(a1, a1, Operand(FIRST_NONSTRING_TYPE)); __ Branch(&symbol_descriptive_string, eq, a1, Operand(zero_reg)); __ Branch(&to_string, gt, a1, Operand(zero_reg)); __ Ret(USE_DELAY_SLOT); __ mov(v0, a0); } // 2b. No arguments, return the empty string (and pop the receiver). __ bind(&no_arguments); { __ LoadRoot(v0, Heap::kempty_stringRootIndex); __ DropAndRet(1); } // 3a. Convert a0 to a string. __ bind(&to_string); { ToStringStub stub(masm->isolate()); __ TailCallStub(&stub); } // 3b. Convert symbol in a0 to a string. __ bind(&symbol_descriptive_string); { __ Push(a0); __ TailCallRuntime(Runtime::kSymbolDescriptiveString); } } // static void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : number of arguments // -- a1 : constructor function // -- a3 : new target // -- ra : return address // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) // -- sp[argc * 4] : receiver // ----------------------------------- // 1. Make sure we operate in the context of the called function. __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); // 2. Load the first argument into a0 and get rid of the rest (including the // receiver). { Label no_arguments, done; __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg)); __ Subu(a0, a0, Operand(1)); __ sll(a0, a0, kPointerSizeLog2); __ Addu(sp, a0, sp); __ lw(a0, MemOperand(sp)); __ Drop(2); __ jmp(&done); __ bind(&no_arguments); __ LoadRoot(a0, Heap::kempty_stringRootIndex); __ Drop(1); __ bind(&done); } // 3. Make sure a0 is a string. { Label convert, done_convert; __ JumpIfSmi(a0, &convert); __ GetObjectType(a0, a2, a2); __ And(t0, a2, Operand(kIsNotStringMask)); __ Branch(&done_convert, eq, t0, Operand(zero_reg)); __ bind(&convert); { FrameScope scope(masm, StackFrame::INTERNAL); ToStringStub stub(masm->isolate()); __ Push(a1, a3); __ CallStub(&stub); __ Move(a0, v0); __ Pop(a1, a3); } __ bind(&done_convert); } // 4. Check if new target and constructor differ. Label new_object; __ Branch(&new_object, ne, a1, Operand(a3)); // 5. Allocate a JSValue wrapper for the string. __ AllocateJSValue(v0, a1, a0, a2, t0, &new_object); __ Ret(); // 6. Fallback to the runtime to create new object. __ bind(&new_object); { FrameScope scope(masm, StackFrame::INTERNAL); __ Push(a0, a1, a3); // first argument, constructor, new target __ CallRuntime(Runtime::kNewObject); __ Pop(a0); } __ Ret(USE_DELAY_SLOT); __ sw(a0, FieldMemOperand(v0, JSValue::kValueOffset)); // In delay slot } static void CallRuntimePassFunction( MacroAssembler* masm, Runtime::FunctionId function_id) { // ----------- S t a t e ------------- // -- a1 : target function (preserved for callee) // -- a3 : new target (preserved for callee) // ----------------------------------- FrameScope scope(masm, StackFrame::INTERNAL); // Push a copy of the target function and the new target. // Push function as parameter to the runtime call. __ Push(a1, a3, a1); __ CallRuntime(function_id, 1); // Restore target function and new target. __ Pop(a1, a3); } static void GenerateTailCallToSharedCode(MacroAssembler* masm) { __ lw(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); __ lw(a2, FieldMemOperand(a2, SharedFunctionInfo::kCodeOffset)); __ Addu(at, a2, Operand(Code::kHeaderSize - kHeapObjectTag)); __ Jump(at); } static void GenerateTailCallToReturnedCode(MacroAssembler* masm) { __ Addu(at, v0, Operand(Code::kHeaderSize - kHeapObjectTag)); __ Jump(at); } void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) { // Checking whether the queued function is ready for install is optional, // since we come across interrupts and stack checks elsewhere. However, // not checking may delay installing ready functions, and always checking // would be quite expensive. A good compromise is to first check against // stack limit as a cue for an interrupt signal. Label ok; __ LoadRoot(t0, Heap::kStackLimitRootIndex); __ Branch(&ok, hs, sp, Operand(t0)); CallRuntimePassFunction(masm, Runtime::kTryInstallOptimizedCode); GenerateTailCallToReturnedCode(masm); __ bind(&ok); GenerateTailCallToSharedCode(masm); } static void Generate_JSConstructStubHelper(MacroAssembler* masm, bool is_api_function, bool create_implicit_receiver) { // ----------- S t a t e ------------- // -- a0 : number of arguments // -- a1 : constructor function // -- a2 : allocation site or undefined // -- a3 : new target // -- ra : return address // -- sp[...]: constructor arguments // ----------------------------------- Isolate* isolate = masm->isolate(); // Enter a construct frame. { FrameScope scope(masm, StackFrame::CONSTRUCT); // Preserve the incoming parameters on the stack. __ AssertUndefinedOrAllocationSite(a2, t0); __ SmiTag(a0); __ Push(a2, a0); if (create_implicit_receiver) { // Try to allocate the object without transitioning into C code. If any of // the preconditions is not met, the code bails out to the runtime call. Label rt_call, allocated; if (FLAG_inline_new) { // Verify that the new target is a JSFunction. __ GetObjectType(a3, t1, t0); __ Branch(&rt_call, ne, t0, Operand(JS_FUNCTION_TYPE)); // Load the initial map and verify that it is in fact a map. // a3: new target __ lw(a2, FieldMemOperand(a3, JSFunction::kPrototypeOrInitialMapOffset)); __ JumpIfSmi(a2, &rt_call); __ GetObjectType(a2, t5, t4); __ Branch(&rt_call, ne, t4, Operand(MAP_TYPE)); // Fall back to runtime if the expected base constructor and base // constructor differ. __ lw(t1, FieldMemOperand(a2, Map::kConstructorOrBackPointerOffset)); __ Branch(&rt_call, ne, a1, Operand(t1)); // Check that the constructor is not constructing a JSFunction (see // comments in Runtime_NewObject in runtime.cc). In which case the // initial map's instance type would be JS_FUNCTION_TYPE. // a1: constructor function // a2: initial map __ lbu(t5, FieldMemOperand(a2, Map::kInstanceTypeOffset)); __ Branch(&rt_call, eq, t5, Operand(JS_FUNCTION_TYPE)); // Now allocate the JSObject on the heap. // a1: constructor function // a2: initial map // a3: new target __ lbu(t3, FieldMemOperand(a2, Map::kInstanceSizeOffset)); __ Allocate(t3, t4, t3, t6, &rt_call, SIZE_IN_WORDS); // Allocated the JSObject, now initialize the fields. Map is set to // initial map and properties and elements are set to empty fixed array. // a1: constructor function // a2: initial map // a3: new target // t4: JSObject (not HeapObject tagged - the actual address). // t3: start of next object __ LoadRoot(t6, Heap::kEmptyFixedArrayRootIndex); __ mov(t5, t4); STATIC_ASSERT(0 * kPointerSize == JSObject::kMapOffset); __ sw(a2, MemOperand(t5, JSObject::kMapOffset)); STATIC_ASSERT(1 * kPointerSize == JSObject::kPropertiesOffset); __ sw(t6, MemOperand(t5, JSObject::kPropertiesOffset)); STATIC_ASSERT(2 * kPointerSize == JSObject::kElementsOffset); __ sw(t6, MemOperand(t5, JSObject::kElementsOffset)); STATIC_ASSERT(3 * kPointerSize == JSObject::kHeaderSize); __ Addu(t5, t5, Operand(3 * kPointerSize)); // Add the object tag to make the JSObject real, so that we can continue // and jump into the continuation code at any time from now on. __ Addu(t4, t4, Operand(kHeapObjectTag)); // Fill all the in-object properties with appropriate filler. // t4: JSObject (tagged) // t5: First in-object property of JSObject (not tagged) __ LoadRoot(t7, Heap::kUndefinedValueRootIndex); if (!is_api_function) { Label no_inobject_slack_tracking; MemOperand bit_field3 = FieldMemOperand(a2, Map::kBitField3Offset); // Check if slack tracking is enabled. __ lw(t0, bit_field3); __ DecodeField(t2, t0); // t2: slack tracking counter __ Branch(&no_inobject_slack_tracking, lt, t2, Operand(Map::kSlackTrackingCounterEnd)); // Decrease generous allocation count. __ Subu(t0, t0, Operand(1 << Map::ConstructionCounter::kShift)); __ sw(t0, bit_field3); // Allocate object with a slack. __ lbu(a0, FieldMemOperand(a2, Map::kUnusedPropertyFieldsOffset)); __ sll(a0, a0, kPointerSizeLog2); __ subu(a0, t3, a0); // a0: offset of first field after pre-allocated fields if (FLAG_debug_code) { __ Assert(le, kUnexpectedNumberOfPreAllocatedPropertyFields, t5, Operand(a0)); } __ InitializeFieldsWithFiller(t5, a0, t7); // To allow truncation fill the remaining fields with one pointer // filler map. __ LoadRoot(t7, Heap::kOnePointerFillerMapRootIndex); __ InitializeFieldsWithFiller(t5, t3, t7); // t2: slack tracking counter value before decreasing. __ Branch(&allocated, ne, t2, Operand(Map::kSlackTrackingCounterEnd)); // Push the constructor, new_target and the object to the stack, // and then the initial map as an argument to the runtime call. __ Push(a1, a3, t4, a2); __ CallRuntime(Runtime::kFinalizeInstanceSize); __ Pop(a1, a3, t4); // Continue with JSObject being successfully allocated. // a1: constructor function // a3: new target // t4: JSObject __ jmp(&allocated); __ bind(&no_inobject_slack_tracking); } __ InitializeFieldsWithFiller(t5, t3, t7); // Continue with JSObject being successfully allocated. // a1: constructor function // a3: new target // t4: JSObject __ jmp(&allocated); } // Allocate the new receiver object using the runtime call. // a1: constructor function // a3: new target __ bind(&rt_call); // Push the constructor and new_target twice, second pair as arguments // to the runtime call. __ Push(a1, a3, a1, a3); // constructor function, new target __ CallRuntime(Runtime::kNewObject); __ mov(t4, v0); __ Pop(a1, a3); // Receiver for constructor call allocated. // a1: constructor function // a3: new target // t4: JSObject __ bind(&allocated); // Retrieve smi-tagged arguments count from the stack. __ lw(a0, MemOperand(sp)); } __ SmiUntag(a0); if (create_implicit_receiver) { // Push the allocated receiver to the stack. We need two copies // because we may have to return the original one and the calling // conventions dictate that the called function pops the receiver. __ Push(t4, t4); } else { __ PushRoot(Heap::kTheHoleValueRootIndex); } // Set up pointer to last argument. __ Addu(a2, fp, Operand(StandardFrameConstants::kCallerSPOffset)); // Copy arguments and receiver to the expression stack. // a0: number of arguments // a1: constructor function // a2: address of last argument (caller sp) // a3: new target // t4: number of arguments (smi-tagged) // sp[0]: receiver // sp[1]: receiver // sp[2]: number of arguments (smi-tagged) Label loop, entry; __ SmiTag(t4, a0); __ jmp(&entry); __ bind(&loop); __ sll(t0, t4, kPointerSizeLog2 - kSmiTagSize); __ Addu(t0, a2, Operand(t0)); __ lw(t1, MemOperand(t0)); __ push(t1); __ bind(&entry); __ Addu(t4, t4, Operand(-2)); __ Branch(&loop, greater_equal, t4, Operand(zero_reg)); // Call the function. // a0: number of arguments // a1: constructor function // a3: new target if (is_api_function) { __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); Handle code = masm->isolate()->builtins()->HandleApiCallConstruct(); __ Call(code, RelocInfo::CODE_TARGET); } else { ParameterCount actual(a0); __ InvokeFunction(a1, a3, actual, CALL_FUNCTION, CheckDebugStepCallWrapper()); } // Store offset of return address for deoptimizer. if (create_implicit_receiver && !is_api_function) { masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset()); } // Restore context from the frame. __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); if (create_implicit_receiver) { // If the result is an object (in the ECMA sense), we should get rid // of the receiver and use the result; see ECMA-262 section 13.2.2-7 // on page 74. Label use_receiver, exit; // If the result is a smi, it is *not* an object in the ECMA sense. // v0: result // sp[0]: receiver (newly allocated object) // sp[1]: number of arguments (smi-tagged) __ JumpIfSmi(v0, &use_receiver); // If the type of the result (stored in its map) is less than // FIRST_JS_RECEIVER_TYPE, it is not an object in the ECMA sense. __ GetObjectType(v0, a1, a3); __ Branch(&exit, greater_equal, a3, Operand(FIRST_JS_RECEIVER_TYPE)); // Throw away the result of the constructor invocation and use the // on-stack receiver as the result. __ bind(&use_receiver); __ lw(v0, MemOperand(sp)); // Remove receiver from the stack, remove caller arguments, and // return. __ bind(&exit); // v0: result // sp[0]: receiver (newly allocated object) // sp[1]: number of arguments (smi-tagged) __ lw(a1, MemOperand(sp, 1 * kPointerSize)); } else { __ lw(a1, MemOperand(sp)); } // Leave construct frame. } __ sll(t0, a1, kPointerSizeLog2 - 1); __ Addu(sp, sp, t0); __ Addu(sp, sp, kPointerSize); if (create_implicit_receiver) { __ IncrementCounter(isolate->counters()->constructed_objects(), 1, a1, a2); } __ Ret(); } void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) { Generate_JSConstructStubHelper(masm, false, true); } void Builtins::Generate_JSConstructStubApi(MacroAssembler* masm) { Generate_JSConstructStubHelper(masm, true, true); } void Builtins::Generate_JSBuiltinsConstructStub(MacroAssembler* masm) { Generate_JSConstructStubHelper(masm, false, false); } void Builtins::Generate_ConstructedNonConstructable(MacroAssembler* masm) { FrameScope scope(masm, StackFrame::INTERNAL); __ Push(a1); __ CallRuntime(Runtime::kThrowConstructedNonConstructable); } enum IsTagged { kArgcIsSmiTagged, kArgcIsUntaggedInt }; // Clobbers a2; preserves all other registers. static void Generate_CheckStackOverflow(MacroAssembler* masm, Register argc, IsTagged argc_is_tagged) { // Check the stack for overflow. We are not trying to catch // interruptions (e.g. debug break and preemption) here, so the "real stack // limit" is checked. Label okay; __ LoadRoot(a2, Heap::kRealStackLimitRootIndex); // Make a2 the space we have left. The stack might already be overflowed // here which will cause a2 to become negative. __ Subu(a2, sp, a2); // Check if the arguments will overflow the stack. if (argc_is_tagged == kArgcIsSmiTagged) { __ sll(t3, argc, kPointerSizeLog2 - kSmiTagSize); } else { DCHECK(argc_is_tagged == kArgcIsUntaggedInt); __ sll(t3, argc, kPointerSizeLog2); } // Signed comparison. __ Branch(&okay, gt, a2, Operand(t3)); // Out of stack space. __ CallRuntime(Runtime::kThrowStackOverflow); __ bind(&okay); } static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, bool is_construct) { // Called from JSEntryStub::GenerateBody // ----------- S t a t e ------------- // -- a0: new.target // -- a1: function // -- a2: receiver_pointer // -- a3: argc // -- s0: argv // ----------------------------------- ProfileEntryHookStub::MaybeCallEntryHook(masm); // Clear the context before we push it when entering the JS frame. __ mov(cp, zero_reg); // Enter an internal frame. { FrameScope scope(masm, StackFrame::INTERNAL); // Setup the context (we need to use the caller context from the isolate). ExternalReference context_address(Isolate::kContextAddress, masm->isolate()); __ li(cp, Operand(context_address)); __ lw(cp, MemOperand(cp)); // Push the function and the receiver onto the stack. __ Push(a1, a2); // Check if we have enough stack space to push all arguments. // Clobbers a2. Generate_CheckStackOverflow(masm, a3, kArgcIsUntaggedInt); // Remember new.target. __ mov(t1, a0); // Copy arguments to the stack in a loop. // a3: argc // s0: argv, i.e. points to first arg Label loop, entry; __ sll(t0, a3, kPointerSizeLog2); __ addu(t2, s0, t0); __ b(&entry); __ nop(); // Branch delay slot nop. // t2 points past last arg. __ bind(&loop); __ lw(t0, MemOperand(s0)); // Read next parameter. __ addiu(s0, s0, kPointerSize); __ lw(t0, MemOperand(t0)); // Dereference handle. __ push(t0); // Push parameter. __ bind(&entry); __ Branch(&loop, ne, s0, Operand(t2)); // Setup new.target and argc. __ mov(a0, a3); __ mov(a3, t1); // Initialize all JavaScript callee-saved registers, since they will be seen // by the garbage collector as part of handlers. __ LoadRoot(t0, Heap::kUndefinedValueRootIndex); __ mov(s1, t0); __ mov(s2, t0); __ mov(s3, t0); __ mov(s4, t0); __ mov(s5, t0); // s6 holds the root address. Do not clobber. // s7 is cp. Do not init. // Invoke the code. Handle builtin = is_construct ? masm->isolate()->builtins()->Construct() : masm->isolate()->builtins()->Call(); __ Call(builtin, RelocInfo::CODE_TARGET); // Leave internal frame. } __ Jump(ra); } void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { Generate_JSEntryTrampolineHelper(masm, false); } void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { Generate_JSEntryTrampolineHelper(masm, true); } // Generate code for entering a JS function with the interpreter. // On entry to the function the receiver and arguments have been pushed on the // stack left to right. The actual argument count matches the formal parameter // count expected by the function. // // The live registers are: // o a1: the JS function object being called. // o a3: the new target // o cp: our context // o fp: the caller's frame pointer // o sp: stack pointer // o ra: return address // // The function builds a JS frame. Please see JavaScriptFrameConstants in // frames-mips.h for its layout. // TODO(rmcilroy): We will need to include the current bytecode pointer in the // frame. void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) { // Open a frame scope to indicate that there is a frame on the stack. The // MANUAL indicates that the scope shouldn't actually generate code to set up // the frame (that is done below). FrameScope frame_scope(masm, StackFrame::MANUAL); __ Push(ra, fp, cp, a1); __ Addu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); __ Push(a3); // Push zero for bytecode array offset. __ Push(zero_reg); // Get the bytecode array from the function object and load the pointer to the // first entry into kInterpreterBytecodeRegister. __ lw(a0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); __ lw(kInterpreterBytecodeArrayRegister, FieldMemOperand(a0, SharedFunctionInfo::kFunctionDataOffset)); if (FLAG_debug_code) { // Check function data field is actually a BytecodeArray object. __ SmiTst(kInterpreterBytecodeArrayRegister, t0); __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, t0, Operand(zero_reg)); __ GetObjectType(kInterpreterBytecodeArrayRegister, t0, t0); __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, t0, Operand(BYTECODE_ARRAY_TYPE)); } // Allocate the local and temporary register file on the stack. { // Load frame size from the BytecodeArray object. __ lw(t0, FieldMemOperand(kInterpreterBytecodeArrayRegister, BytecodeArray::kFrameSizeOffset)); // Do a stack check to ensure we don't go over the limit. Label ok; __ Subu(t1, sp, Operand(t0)); __ LoadRoot(a2, Heap::kRealStackLimitRootIndex); __ Branch(&ok, hs, t1, Operand(a2)); __ CallRuntime(Runtime::kThrowStackOverflow); __ bind(&ok); // If ok, push undefined as the initial value for all register file entries. Label loop_header; Label loop_check; __ LoadRoot(t1, Heap::kUndefinedValueRootIndex); __ Branch(&loop_check); __ bind(&loop_header); // TODO(rmcilroy): Consider doing more than one push per loop iteration. __ push(t1); // Continue loop if not done. __ bind(&loop_check); __ Subu(t0, t0, Operand(kPointerSize)); __ Branch(&loop_header, ge, t0, Operand(zero_reg)); } // TODO(rmcilroy): List of things not currently dealt with here but done in // fullcodegen's prologue: // - Support profiler (specifically profiling_counter). // - Call ProfileEntryHookStub when isolate has a function_entry_hook. // - Allow simulator stop operations if FLAG_stop_at is set. // - Code aging of the BytecodeArray object. // Perform stack guard check. { Label ok; __ LoadRoot(at, Heap::kStackLimitRootIndex); __ Branch(&ok, hs, sp, Operand(at)); __ push(kInterpreterBytecodeArrayRegister); __ CallRuntime(Runtime::kStackGuard); __ pop(kInterpreterBytecodeArrayRegister); __ bind(&ok); } // Load bytecode offset and dispatch table into registers. __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex); __ Addu(kInterpreterRegisterFileRegister, fp, Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); __ li(kInterpreterBytecodeOffsetRegister, Operand(BytecodeArray::kHeaderSize - kHeapObjectTag)); __ LoadRoot(kInterpreterDispatchTableRegister, Heap::kInterpreterTableRootIndex); __ Addu(kInterpreterDispatchTableRegister, kInterpreterDispatchTableRegister, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); // Dispatch to the first bytecode handler for the function. __ Addu(a0, kInterpreterBytecodeArrayRegister, kInterpreterBytecodeOffsetRegister); __ lbu(a0, MemOperand(a0)); __ sll(at, a0, kPointerSizeLog2); __ Addu(at, kInterpreterDispatchTableRegister, at); __ lw(at, MemOperand(at)); // TODO(rmcilroy): Make dispatch table point to code entrys to avoid untagging // and header removal. __ Addu(at, at, Operand(Code::kHeaderSize - kHeapObjectTag)); __ Call(at); } void Builtins::Generate_InterpreterExitTrampoline(MacroAssembler* masm) { // TODO(rmcilroy): List of things not currently dealt with here but done in // fullcodegen's EmitReturnSequence. // - Supporting FLAG_trace for Runtime::TraceExit. // - Support profiler (specifically decrementing profiling_counter // appropriately and calling out to HandleInterrupts if necessary). // The return value is in accumulator, which is already in v0. // Leave the frame (also dropping the register file). __ LeaveFrame(StackFrame::JAVA_SCRIPT); // Drop receiver + arguments and return. __ lw(at, FieldMemOperand(kInterpreterBytecodeArrayRegister, BytecodeArray::kParameterSizeOffset)); __ Addu(sp, sp, at); __ Jump(ra); } // static void Builtins::Generate_InterpreterPushArgsAndCall(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a2 : the address of the first argument to be pushed. Subsequent // arguments should be consecutive above this, in the same order as // they are to be pushed onto the stack. // -- a1 : the target to call (can be any Object). // ----------------------------------- // Find the address of the last argument. __ Addu(a3, a0, Operand(1)); // Add one for receiver. __ sll(a3, a3, kPointerSizeLog2); __ Subu(a3, a2, Operand(a3)); // Push the arguments. Label loop_header, loop_check; __ Branch(&loop_check); __ bind(&loop_header); __ lw(t0, MemOperand(a2)); __ Addu(a2, a2, Operand(-kPointerSize)); __ push(t0); __ bind(&loop_check); __ Branch(&loop_header, gt, a2, Operand(a3)); // Call the target. __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); } // static void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : argument count (not including receiver) // -- a3 : new target // -- a1 : constructor to call // -- a2 : address of the first argument // ----------------------------------- // Find the address of the last argument. __ sll(t0, a0, kPointerSizeLog2); __ Subu(t0, a2, Operand(t0)); // Push a slot for the receiver. __ push(zero_reg); // Push the arguments. Label loop_header, loop_check; __ Branch(&loop_check); __ bind(&loop_header); __ lw(t1, MemOperand(a2)); __ Addu(a2, a2, Operand(-kPointerSize)); __ push(t1); __ bind(&loop_check); __ Branch(&loop_header, gt, a2, Operand(t0)); // Call the constructor with a0, a1, and a3 unmodified. __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); } static void Generate_InterpreterNotifyDeoptimizedHelper( MacroAssembler* masm, Deoptimizer::BailoutType type) { // Enter an internal frame. { FrameScope scope(masm, StackFrame::INTERNAL); __ push(kInterpreterAccumulatorRegister); // Save accumulator register. // Pass the deoptimization type to the runtime system. __ li(a1, Operand(Smi::FromInt(static_cast(type)))); __ push(a1); __ CallRuntime(Runtime::kNotifyDeoptimized); __ pop(kInterpreterAccumulatorRegister); // Restore accumulator register. // Tear down internal frame. } // Drop state (we don't use this for interpreter deopts). __ Drop(1); // Initialize register file register and dispatch table register. __ Addu(kInterpreterRegisterFileRegister, fp, Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); __ LoadRoot(kInterpreterDispatchTableRegister, Heap::kInterpreterTableRootIndex); __ Addu(kInterpreterDispatchTableRegister, kInterpreterDispatchTableRegister, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); // Get the context from the frame. // TODO(rmcilroy): Update interpreter frame to expect current context at the // context slot instead of the function context. __ lw(kContextRegister, MemOperand(kInterpreterRegisterFileRegister, InterpreterFrameConstants::kContextFromRegisterPointer)); // Get the bytecode array pointer from the frame. __ lw(a1, MemOperand(kInterpreterRegisterFileRegister, InterpreterFrameConstants::kFunctionFromRegisterPointer)); __ lw(a1, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); __ lw(kInterpreterBytecodeArrayRegister, FieldMemOperand(a1, SharedFunctionInfo::kFunctionDataOffset)); if (FLAG_debug_code) { // Check function data field is actually a BytecodeArray object. __ SmiTst(kInterpreterBytecodeArrayRegister, at); __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, at, Operand(zero_reg)); __ GetObjectType(kInterpreterBytecodeArrayRegister, a1, a1); __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, a1, Operand(BYTECODE_ARRAY_TYPE)); } // Get the target bytecode offset from the frame. __ lw(kInterpreterBytecodeOffsetRegister, MemOperand( kInterpreterRegisterFileRegister, InterpreterFrameConstants::kBytecodeOffsetFromRegisterPointer)); __ SmiUntag(kInterpreterBytecodeOffsetRegister); // Dispatch to the target bytecode. __ Addu(a1, kInterpreterBytecodeArrayRegister, kInterpreterBytecodeOffsetRegister); __ lbu(a1, MemOperand(a1)); __ sll(a1, a1, kPointerSizeLog2); __ Addu(a1, kInterpreterDispatchTableRegister, a1); __ lw(a1, MemOperand(a1)); __ Addu(a1, a1, Operand(Code::kHeaderSize - kHeapObjectTag)); __ Jump(a1); } void Builtins::Generate_InterpreterNotifyDeoptimized(MacroAssembler* masm) { Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); } void Builtins::Generate_InterpreterNotifySoftDeoptimized(MacroAssembler* masm) { Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::SOFT); } void Builtins::Generate_InterpreterNotifyLazyDeoptimized(MacroAssembler* masm) { Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::LAZY); } void Builtins::Generate_CompileLazy(MacroAssembler* masm) { CallRuntimePassFunction(masm, Runtime::kCompileLazy); GenerateTailCallToReturnedCode(masm); } void Builtins::Generate_CompileOptimized(MacroAssembler* masm) { CallRuntimePassFunction(masm, Runtime::kCompileOptimized_NotConcurrent); GenerateTailCallToReturnedCode(masm); } void Builtins::Generate_CompileOptimizedConcurrent(MacroAssembler* masm) { CallRuntimePassFunction(masm, Runtime::kCompileOptimized_Concurrent); GenerateTailCallToReturnedCode(masm); } static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { // For now, we are relying on the fact that make_code_young doesn't do any // garbage collection which allows us to save/restore the registers without // worrying about which of them contain pointers. We also don't build an // internal frame to make the code faster, since we shouldn't have to do stack // crawls in MakeCodeYoung. This seems a bit fragile. // Set a0 to point to the head of the PlatformCodeAge sequence. __ Subu(a0, a0, Operand(kNoCodeAgeSequenceLength - Assembler::kInstrSize)); // The following registers must be saved and restored when calling through to // the runtime: // a0 - contains return address (beginning of patch sequence) // a1 - isolate // a3 - new target RegList saved_regs = (a0.bit() | a1.bit() | a3.bit() | ra.bit() | fp.bit()) & ~sp.bit(); FrameScope scope(masm, StackFrame::MANUAL); __ MultiPush(saved_regs); __ PrepareCallCFunction(2, 0, a2); __ li(a1, Operand(ExternalReference::isolate_address(masm->isolate()))); __ CallCFunction( ExternalReference::get_make_code_young_function(masm->isolate()), 2); __ MultiPop(saved_regs); __ Jump(a0); } #define DEFINE_CODE_AGE_BUILTIN_GENERATOR(C) \ void Builtins::Generate_Make##C##CodeYoungAgainEvenMarking( \ MacroAssembler* masm) { \ GenerateMakeCodeYoungAgainCommon(masm); \ } \ void Builtins::Generate_Make##C##CodeYoungAgainOddMarking( \ MacroAssembler* masm) { \ GenerateMakeCodeYoungAgainCommon(masm); \ } CODE_AGE_LIST(DEFINE_CODE_AGE_BUILTIN_GENERATOR) #undef DEFINE_CODE_AGE_BUILTIN_GENERATOR void Builtins::Generate_MarkCodeAsExecutedOnce(MacroAssembler* masm) { // For now, as in GenerateMakeCodeYoungAgainCommon, we are relying on the fact // that make_code_young doesn't do any garbage collection which allows us to // save/restore the registers without worrying about which of them contain // pointers. // Set a0 to point to the head of the PlatformCodeAge sequence. __ Subu(a0, a0, Operand(kNoCodeAgeSequenceLength - Assembler::kInstrSize)); // The following registers must be saved and restored when calling through to // the runtime: // a0 - contains return address (beginning of patch sequence) // a1 - isolate // a3 - new target RegList saved_regs = (a0.bit() | a1.bit() | a3.bit() | ra.bit() | fp.bit()) & ~sp.bit(); FrameScope scope(masm, StackFrame::MANUAL); __ MultiPush(saved_regs); __ PrepareCallCFunction(2, 0, a2); __ li(a1, Operand(ExternalReference::isolate_address(masm->isolate()))); __ CallCFunction( ExternalReference::get_mark_code_as_executed_function(masm->isolate()), 2); __ MultiPop(saved_regs); // Perform prologue operations usually performed by the young code stub. __ Push(ra, fp, cp, a1); __ Addu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); // Jump to point after the code-age stub. __ Addu(a0, a0, Operand(kNoCodeAgeSequenceLength)); __ Jump(a0); } void Builtins::Generate_MarkCodeAsExecutedTwice(MacroAssembler* masm) { GenerateMakeCodeYoungAgainCommon(masm); } void Builtins::Generate_MarkCodeAsToBeExecutedOnce(MacroAssembler* masm) { Generate_MarkCodeAsExecutedOnce(masm); } static void Generate_NotifyStubFailureHelper(MacroAssembler* masm, SaveFPRegsMode save_doubles) { { FrameScope scope(masm, StackFrame::INTERNAL); // Preserve registers across notification, this is important for compiled // stubs that tail call the runtime on deopts passing their parameters in // registers. __ MultiPush(kJSCallerSaved | kCalleeSaved); // Pass the function and deoptimization type to the runtime system. __ CallRuntime(Runtime::kNotifyStubFailure, save_doubles); __ MultiPop(kJSCallerSaved | kCalleeSaved); } __ Addu(sp, sp, Operand(kPointerSize)); // Ignore state __ Jump(ra); // Jump to miss handler } void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) { Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs); } void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) { Generate_NotifyStubFailureHelper(masm, kSaveFPRegs); } static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm, Deoptimizer::BailoutType type) { { FrameScope scope(masm, StackFrame::INTERNAL); // Pass the function and deoptimization type to the runtime system. __ li(a0, Operand(Smi::FromInt(static_cast(type)))); __ push(a0); __ CallRuntime(Runtime::kNotifyDeoptimized); } // Get the full codegen state from the stack and untag it -> t2. __ lw(t2, MemOperand(sp, 0 * kPointerSize)); __ SmiUntag(t2); // Switch on the state. Label with_tos_register, unknown_state; __ Branch(&with_tos_register, ne, t2, Operand(FullCodeGenerator::NO_REGISTERS)); __ Ret(USE_DELAY_SLOT); // Safe to fill delay slot Addu will emit one instruction. __ Addu(sp, sp, Operand(1 * kPointerSize)); // Remove state. __ bind(&with_tos_register); __ lw(v0, MemOperand(sp, 1 * kPointerSize)); __ Branch(&unknown_state, ne, t2, Operand(FullCodeGenerator::TOS_REG)); __ Ret(USE_DELAY_SLOT); // Safe to fill delay slot Addu will emit one instruction. __ Addu(sp, sp, Operand(2 * kPointerSize)); // Remove state. __ bind(&unknown_state); __ stop("no cases left"); } void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) { Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); } void Builtins::Generate_NotifySoftDeoptimized(MacroAssembler* masm) { Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::SOFT); } void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) { Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY); } // Clobbers {t2, t3, t4, t5}. static void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver, Register function_template_info, Label* receiver_check_failed) { Register signature = t2; Register map = t3; Register constructor = t4; Register scratch = t5; // If there is no signature, return the holder. __ lw(signature, FieldMemOperand(function_template_info, FunctionTemplateInfo::kSignatureOffset)); Label receiver_check_passed; __ JumpIfRoot(signature, Heap::kUndefinedValueRootIndex, &receiver_check_passed); // Walk the prototype chain. __ lw(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); Label prototype_loop_start; __ bind(&prototype_loop_start); // Get the constructor, if any. __ GetMapConstructor(constructor, map, scratch, scratch); Label next_prototype; __ Branch(&next_prototype, ne, scratch, Operand(JS_FUNCTION_TYPE)); Register type = constructor; __ lw(type, FieldMemOperand(constructor, JSFunction::kSharedFunctionInfoOffset)); __ lw(type, FieldMemOperand(type, SharedFunctionInfo::kFunctionDataOffset)); // Loop through the chain of inheriting function templates. Label function_template_loop; __ bind(&function_template_loop); // If the signatures match, we have a compatible receiver. __ Branch(&receiver_check_passed, eq, signature, Operand(type), USE_DELAY_SLOT); // If the current type is not a FunctionTemplateInfo, load the next prototype // in the chain. __ JumpIfSmi(type, &next_prototype); __ GetObjectType(type, scratch, scratch); __ Branch(&next_prototype, ne, scratch, Operand(FUNCTION_TEMPLATE_INFO_TYPE)); // Otherwise load the parent function template and iterate. __ lw(type, FieldMemOperand(type, FunctionTemplateInfo::kParentTemplateOffset)); __ Branch(&function_template_loop); // Load the next prototype and iterate. __ bind(&next_prototype); __ lw(receiver, FieldMemOperand(map, Map::kPrototypeOffset)); // End if the prototype is null or not hidden. __ JumpIfRoot(receiver, Heap::kNullValueRootIndex, receiver_check_failed); __ lw(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); __ lw(scratch, FieldMemOperand(map, Map::kBitField3Offset)); __ DecodeField(scratch); __ Branch(receiver_check_failed, eq, scratch, Operand(zero_reg)); __ Branch(&prototype_loop_start); __ bind(&receiver_check_passed); } void Builtins::Generate_HandleFastApiCall(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : number of arguments excluding receiver // -- a1 : callee // -- ra : return address // -- sp[0] : last argument // -- ... // -- sp[4 * (argc - 1)] : first argument // -- sp[4 * argc] : receiver // ----------------------------------- // Load the FunctionTemplateInfo. __ lw(t1, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); __ lw(t1, FieldMemOperand(t1, SharedFunctionInfo::kFunctionDataOffset)); // Do the compatible receiver check. Label receiver_check_failed; __ sll(at, a0, kPointerSizeLog2); __ Addu(t8, sp, at); __ lw(t0, MemOperand(t8)); CompatibleReceiverCheck(masm, t0, t1, &receiver_check_failed); // Get the callback offset from the FunctionTemplateInfo, and jump to the // beginning of the code. __ lw(t2, FieldMemOperand(t1, FunctionTemplateInfo::kCallCodeOffset)); __ lw(t2, FieldMemOperand(t2, CallHandlerInfo::kFastHandlerOffset)); __ Addu(t2, t2, Operand(Code::kHeaderSize - kHeapObjectTag)); __ Jump(t2); // Compatible receiver check failed: throw an Illegal Invocation exception. __ bind(&receiver_check_failed); // Drop the arguments (including the receiver); __ Addu(t8, t8, Operand(kPointerSize)); __ addu(sp, t8, zero_reg); __ TailCallRuntime(Runtime::kThrowIllegalInvocation); } void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) { // Lookup the function in the JavaScript frame. __ lw(a0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); { FrameScope scope(masm, StackFrame::INTERNAL); // Pass function as argument. __ push(a0); __ CallRuntime(Runtime::kCompileForOnStackReplacement); } // If the code object is null, just return to the unoptimized code. __ Ret(eq, v0, Operand(Smi::FromInt(0))); // Load deoptimization data from the code object. // = [#deoptimization_data_offset] __ lw(a1, MemOperand(v0, Code::kDeoptimizationDataOffset - kHeapObjectTag)); // Load the OSR entrypoint offset from the deoptimization data. // = [#header_size + #osr_pc_offset] __ lw(a1, MemOperand(a1, FixedArray::OffsetOfElementAt( DeoptimizationInputData::kOsrPcOffsetIndex) - kHeapObjectTag)); __ SmiUntag(a1); // Compute the target address = code_obj + header_size + osr_offset // = + #header_size + __ addu(v0, v0, a1); __ addiu(ra, v0, Code::kHeaderSize - kHeapObjectTag); // And "return" to the OSR entry point of the function. __ Ret(); } void Builtins::Generate_OsrAfterStackCheck(MacroAssembler* masm) { // We check the stack limit as indicator that recompilation might be done. Label ok; __ LoadRoot(at, Heap::kStackLimitRootIndex); __ Branch(&ok, hs, sp, Operand(at)); { FrameScope scope(masm, StackFrame::INTERNAL); __ CallRuntime(Runtime::kStackGuard); } __ Jump(masm->isolate()->builtins()->OnStackReplacement(), RelocInfo::CODE_TARGET); __ bind(&ok); __ Ret(); } // static void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm, int field_index) { // ----------- S t a t e ------------- // -- sp[0] : receiver // ----------------------------------- // 1. Pop receiver into a0 and check that it's actually a JSDate object. Label receiver_not_date; { __ Pop(a0); __ JumpIfSmi(a0, &receiver_not_date); __ GetObjectType(a0, t0, t0); __ Branch(&receiver_not_date, ne, t0, Operand(JS_DATE_TYPE)); } // 2. Load the specified date field, falling back to the runtime as necessary. if (field_index == JSDate::kDateValue) { __ Ret(USE_DELAY_SLOT); __ lw(v0, FieldMemOperand(a0, JSDate::kValueOffset)); // In delay slot. } else { if (field_index < JSDate::kFirstUncachedField) { Label stamp_mismatch; __ li(a1, Operand(ExternalReference::date_cache_stamp(masm->isolate()))); __ lw(a1, MemOperand(a1)); __ lw(t0, FieldMemOperand(a0, JSDate::kCacheStampOffset)); __ Branch(&stamp_mismatch, ne, t0, Operand(a1)); __ Ret(USE_DELAY_SLOT); __ lw(v0, FieldMemOperand( a0, JSDate::kValueOffset + field_index * kPointerSize)); // In delay slot. __ bind(&stamp_mismatch); } FrameScope scope(masm, StackFrame::INTERNAL); __ PrepareCallCFunction(2, t0); __ li(a1, Operand(Smi::FromInt(field_index))); __ CallCFunction( ExternalReference::get_date_field_function(masm->isolate()), 2); } __ Ret(); // 3. Raise a TypeError if the receiver is not a date. __ bind(&receiver_not_date); __ TailCallRuntime(Runtime::kThrowNotDateError); } // static void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : argc // -- sp[0] : argArray // -- sp[4] : thisArg // -- sp[8] : receiver // ----------------------------------- // 1. Load receiver into a1, argArray into a0 (if present), remove all // arguments from the stack (including the receiver), and push thisArg (if // present) instead. { Label no_arg; Register scratch = t0; __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); __ mov(a3, a2); __ sll(scratch, a0, kPointerSizeLog2); __ Addu(a0, sp, Operand(scratch)); __ lw(a1, MemOperand(a0)); // receiver __ Subu(a0, a0, Operand(kPointerSize)); __ Branch(&no_arg, lt, a0, Operand(sp)); __ lw(a2, MemOperand(a0)); // thisArg __ Subu(a0, a0, Operand(kPointerSize)); __ Branch(&no_arg, lt, a0, Operand(sp)); __ lw(a3, MemOperand(a0)); // argArray __ bind(&no_arg); __ Addu(sp, sp, Operand(scratch)); __ sw(a2, MemOperand(sp)); __ mov(a0, a3); } // ----------- S t a t e ------------- // -- a0 : argArray // -- a1 : receiver // -- sp[0] : thisArg // ----------------------------------- // 2. Make sure the receiver is actually callable. Label receiver_not_callable; __ JumpIfSmi(a1, &receiver_not_callable); __ lw(t0, FieldMemOperand(a1, HeapObject::kMapOffset)); __ lbu(t0, FieldMemOperand(t0, Map::kBitFieldOffset)); __ And(t0, t0, Operand(1 << Map::kIsCallable)); __ Branch(&receiver_not_callable, eq, t0, Operand(zero_reg)); // 3. Tail call with no arguments if argArray is null or undefined. Label no_arguments; __ JumpIfRoot(a0, Heap::kNullValueRootIndex, &no_arguments); __ JumpIfRoot(a0, Heap::kUndefinedValueRootIndex, &no_arguments); // 4a. Apply the receiver to the given argArray (passing undefined for // new.target). __ LoadRoot(a3, Heap::kUndefinedValueRootIndex); __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); // 4b. The argArray is either null or undefined, so we tail call without any // arguments to the receiver. __ bind(&no_arguments); { __ mov(a0, zero_reg); __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); } // 4c. The receiver is not callable, throw an appropriate TypeError. __ bind(&receiver_not_callable); { __ sw(a1, MemOperand(sp)); __ TailCallRuntime(Runtime::kThrowApplyNonFunction); } } // static void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) { // 1. Make sure we have at least one argument. // a0: actual number of arguments { Label done; __ Branch(&done, ne, a0, Operand(zero_reg)); __ PushRoot(Heap::kUndefinedValueRootIndex); __ Addu(a0, a0, Operand(1)); __ bind(&done); } // 2. Get the function to call (passed as receiver) from the stack. // a0: actual number of arguments __ sll(at, a0, kPointerSizeLog2); __ addu(at, sp, at); __ lw(a1, MemOperand(at)); // 3. Shift arguments and return address one slot down on the stack // (overwriting the original receiver). Adjust argument count to make // the original first argument the new receiver. // a0: actual number of arguments // a1: function { Label loop; // Calculate the copy start address (destination). Copy end address is sp. __ sll(at, a0, kPointerSizeLog2); __ addu(a2, sp, at); __ bind(&loop); __ lw(at, MemOperand(a2, -kPointerSize)); __ sw(at, MemOperand(a2)); __ Subu(a2, a2, Operand(kPointerSize)); __ Branch(&loop, ne, a2, Operand(sp)); // Adjust the actual number of arguments and remove the top element // (which is a copy of the last argument). __ Subu(a0, a0, Operand(1)); __ Pop(); } // 4. Call the callable. __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); } void Builtins::Generate_ReflectApply(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : argc // -- sp[0] : argumentsList // -- sp[4] : thisArgument // -- sp[8] : target // -- sp[12] : receiver // ----------------------------------- // 1. Load target into a1 (if present), argumentsList into a0 (if present), // remove all arguments from the stack (including the receiver), and push // thisArgument (if present) instead. { Label no_arg; Register scratch = t0; __ LoadRoot(a1, Heap::kUndefinedValueRootIndex); __ mov(a2, a1); __ mov(a3, a1); __ sll(scratch, a0, kPointerSizeLog2); __ mov(a0, scratch); __ Subu(a0, a0, Operand(kPointerSize)); __ Branch(&no_arg, lt, a0, Operand(zero_reg)); __ Addu(a0, sp, Operand(a0)); __ lw(a1, MemOperand(a0)); // target __ Subu(a0, a0, Operand(kPointerSize)); __ Branch(&no_arg, lt, a0, Operand(sp)); __ lw(a2, MemOperand(a0)); // thisArgument __ Subu(a0, a0, Operand(kPointerSize)); __ Branch(&no_arg, lt, a0, Operand(sp)); __ lw(a3, MemOperand(a0)); // argumentsList __ bind(&no_arg); __ Addu(sp, sp, Operand(scratch)); __ sw(a2, MemOperand(sp)); __ mov(a0, a3); } // ----------- S t a t e ------------- // -- a0 : argumentsList // -- a1 : target // -- sp[0] : thisArgument // ----------------------------------- // 2. Make sure the target is actually callable. Label target_not_callable; __ JumpIfSmi(a1, &target_not_callable); __ lw(t0, FieldMemOperand(a1, HeapObject::kMapOffset)); __ lbu(t0, FieldMemOperand(t0, Map::kBitFieldOffset)); __ And(t0, t0, Operand(1 << Map::kIsCallable)); __ Branch(&target_not_callable, eq, t0, Operand(zero_reg)); // 3a. Apply the target to the given argumentsList (passing undefined for // new.target). __ LoadRoot(a3, Heap::kUndefinedValueRootIndex); __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); // 3b. The target is not callable, throw an appropriate TypeError. __ bind(&target_not_callable); { __ sw(a1, MemOperand(sp)); __ TailCallRuntime(Runtime::kThrowApplyNonFunction); } } void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : argc // -- sp[0] : new.target (optional) // -- sp[4] : argumentsList // -- sp[8] : target // -- sp[12] : receiver // ----------------------------------- // 1. Load target into a1 (if present), argumentsList into a0 (if present), // new.target into a3 (if present, otherwise use target), remove all // arguments from the stack (including the receiver), and push thisArgument // (if present) instead. { Label no_arg; Register scratch = t0; __ LoadRoot(a1, Heap::kUndefinedValueRootIndex); __ mov(a2, a1); __ sll(scratch, a0, kPointerSizeLog2); __ Addu(a0, sp, Operand(scratch)); __ sw(a2, MemOperand(a0)); // receiver __ Subu(a0, a0, Operand(kPointerSize)); __ Branch(&no_arg, lt, a0, Operand(sp)); __ lw(a1, MemOperand(a0)); // target __ mov(a3, a1); // new.target defaults to target __ Subu(a0, a0, Operand(kPointerSize)); __ Branch(&no_arg, lt, a0, Operand(sp)); __ lw(a2, MemOperand(a0)); // argumentsList __ Subu(a0, a0, Operand(kPointerSize)); __ Branch(&no_arg, lt, a0, Operand(sp)); __ lw(a3, MemOperand(a0)); // new.target __ bind(&no_arg); __ Addu(sp, sp, Operand(scratch)); __ mov(a0, a2); } // ----------- S t a t e ------------- // -- a0 : argumentsList // -- a3 : new.target // -- a1 : target // -- sp[0] : receiver (undefined) // ----------------------------------- // 2. Make sure the target is actually a constructor. Label target_not_constructor; __ JumpIfSmi(a1, &target_not_constructor); __ lw(t0, FieldMemOperand(a1, HeapObject::kMapOffset)); __ lbu(t0, FieldMemOperand(t0, Map::kBitFieldOffset)); __ And(t0, t0, Operand(1 << Map::kIsConstructor)); __ Branch(&target_not_constructor, eq, t0, Operand(zero_reg)); // 3. Make sure the target is actually a constructor. Label new_target_not_constructor; __ JumpIfSmi(a3, &new_target_not_constructor); __ lw(t0, FieldMemOperand(a3, HeapObject::kMapOffset)); __ lbu(t0, FieldMemOperand(t0, Map::kBitFieldOffset)); __ And(t0, t0, Operand(1 << Map::kIsConstructor)); __ Branch(&new_target_not_constructor, eq, t0, Operand(zero_reg)); // 4a. Construct the target with the given new.target and argumentsList. __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); // 4b. The target is not a constructor, throw an appropriate TypeError. __ bind(&target_not_constructor); { __ sw(a1, MemOperand(sp)); __ TailCallRuntime(Runtime::kThrowCalledNonCallable); } // 4c. The new.target is not a constructor, throw an appropriate TypeError. __ bind(&new_target_not_constructor); { __ sw(a3, MemOperand(sp)); __ TailCallRuntime(Runtime::kThrowCalledNonCallable); } } static void ArgumentAdaptorStackCheck(MacroAssembler* masm, Label* stack_overflow) { // ----------- S t a t e ------------- // -- a0 : actual number of arguments // -- a1 : function (passed through to callee) // -- a2 : expected number of arguments // -- a3 : new target (passed through to callee) // ----------------------------------- // Check the stack for overflow. We are not trying to catch // interruptions (e.g. debug break and preemption) here, so the "real stack // limit" is checked. __ LoadRoot(t1, Heap::kRealStackLimitRootIndex); // Make t1 the space we have left. The stack might already be overflowed // here which will cause t1 to become negative. __ subu(t1, sp, t1); // Check if the arguments will overflow the stack. __ sll(at, a2, kPointerSizeLog2); // Signed comparison. __ Branch(stack_overflow, le, t1, Operand(at)); } static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) { __ sll(a0, a0, kSmiTagSize); __ li(t0, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); __ MultiPush(a0.bit() | a1.bit() | t0.bit() | fp.bit() | ra.bit()); __ Addu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize)); } static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- v0 : result being passed through // ----------------------------------- // Get the number of arguments passed (as a smi), tear down the frame and // then tear down the parameters. __ lw(a1, MemOperand(fp, -(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize))); __ mov(sp, fp); __ MultiPop(fp.bit() | ra.bit()); __ sll(t0, a1, kPointerSizeLog2 - kSmiTagSize); __ Addu(sp, sp, t0); // Adjust for the receiver. __ Addu(sp, sp, Operand(kPointerSize)); } // static void Builtins::Generate_Apply(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : argumentsList // -- a1 : target // -- a3 : new.target (checked to be constructor or undefined) // -- sp[0] : thisArgument // ----------------------------------- // Create the list of arguments from the array-like argumentsList. { Label create_arguments, create_array, create_runtime, done_create; __ JumpIfSmi(a0, &create_runtime); // Load the map of argumentsList into a2. __ lw(a2, FieldMemOperand(a0, HeapObject::kMapOffset)); // Load native context into t0. __ lw(t0, NativeContextMemOperand()); // Check if argumentsList is an (unmodified) arguments object. __ lw(at, ContextMemOperand(t0, Context::SLOPPY_ARGUMENTS_MAP_INDEX)); __ Branch(&create_arguments, eq, a2, Operand(at)); __ lw(at, ContextMemOperand(t0, Context::STRICT_ARGUMENTS_MAP_INDEX)); __ Branch(&create_arguments, eq, a2, Operand(at)); // Check if argumentsList is a fast JSArray. __ lw(v0, FieldMemOperand(a2, HeapObject::kMapOffset)); __ lbu(v0, FieldMemOperand(v0, Map::kInstanceTypeOffset)); __ Branch(&create_array, eq, v0, Operand(JS_ARRAY_TYPE)); // Ask the runtime to create the list (actually a FixedArray). __ bind(&create_runtime); { FrameScope scope(masm, StackFrame::INTERNAL); __ Push(a1, a3, a0); __ CallRuntime(Runtime::kCreateListFromArrayLike); __ mov(a0, v0); __ Pop(a1, a3); __ lw(a2, FieldMemOperand(v0, FixedArray::kLengthOffset)); __ SmiUntag(a2); } __ Branch(&done_create); // Try to create the list from an arguments object. __ bind(&create_arguments); __ lw(a2, FieldMemOperand(a0, JSObject::kHeaderSize + Heap::kArgumentsLengthIndex * kPointerSize)); __ lw(t0, FieldMemOperand(a0, JSObject::kElementsOffset)); __ lw(at, FieldMemOperand(t0, FixedArray::kLengthOffset)); __ Branch(&create_runtime, ne, a2, Operand(at)); __ SmiUntag(a2); __ mov(a0, t0); __ Branch(&done_create); // Try to create the list from a JSArray object. __ bind(&create_array); __ lw(a2, FieldMemOperand(a2, Map::kBitField2Offset)); __ DecodeField(a2); STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); STATIC_ASSERT(FAST_ELEMENTS == 2); __ Branch(&create_runtime, hi, a2, Operand(FAST_ELEMENTS)); __ Branch(&create_runtime, eq, a2, Operand(FAST_HOLEY_SMI_ELEMENTS)); __ lw(a2, FieldMemOperand(a0, JSArray::kLengthOffset)); __ lw(a0, FieldMemOperand(a0, JSArray::kElementsOffset)); __ SmiUntag(a2); __ bind(&done_create); } // Check for stack overflow. { // Check the stack for overflow. We are not trying to catch interruptions // (i.e. debug break and preemption) here, so check the "real stack limit". Label done; __ LoadRoot(t0, Heap::kRealStackLimitRootIndex); // Make ip the space we have left. The stack might already be overflowed // here which will cause ip to become negative. __ Subu(t0, sp, t0); // Check if the arguments will overflow the stack. __ sll(at, a2, kPointerSizeLog2); __ Branch(&done, gt, t0, Operand(at)); // Signed comparison. __ TailCallRuntime(Runtime::kThrowStackOverflow); __ bind(&done); } // ----------- S t a t e ------------- // -- a1 : target // -- a0 : args (a FixedArray built from argumentsList) // -- a2 : len (number of elements to push from args) // -- a3 : new.target (checked to be constructor or undefined) // -- sp[0] : thisArgument // ----------------------------------- // Push arguments onto the stack (thisArgument is already on the stack). { __ mov(t0, zero_reg); Label done, loop; __ bind(&loop); __ Branch(&done, eq, t0, Operand(a2)); __ sll(at, t0, kPointerSizeLog2); __ Addu(at, a0, at); __ lw(at, FieldMemOperand(at, FixedArray::kHeaderSize)); __ Push(at); __ Addu(t0, t0, Operand(1)); __ Branch(&loop); __ bind(&done); __ Move(a0, t0); } // Dispatch to Call or Construct depending on whether new.target is undefined. { Label construct; __ LoadRoot(at, Heap::kUndefinedValueRootIndex); __ Branch(&construct, ne, a3, Operand(at)); __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); __ bind(&construct); __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); } } // static void Builtins::Generate_CallFunction(MacroAssembler* masm, ConvertReceiverMode mode) { // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a1 : the function to call (checked to be a JSFunction) // ----------------------------------- __ AssertFunction(a1); // See ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList) // Check that the function is not a "classConstructor". Label class_constructor; __ lw(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); __ lbu(a3, FieldMemOperand(a2, SharedFunctionInfo::kFunctionKindByteOffset)); __ And(at, a3, Operand(SharedFunctionInfo::kClassConstructorBitsWithinByte)); __ Branch(&class_constructor, ne, at, Operand(zero_reg)); // Enter the context of the function; ToObject has to run in the function // context, and we also need to take the global proxy from the function // context in case of conversion. STATIC_ASSERT(SharedFunctionInfo::kNativeByteOffset == SharedFunctionInfo::kStrictModeByteOffset); __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); // We need to convert the receiver for non-native sloppy mode functions. Label done_convert; __ lbu(a3, FieldMemOperand(a2, SharedFunctionInfo::kNativeByteOffset)); __ And(at, a3, Operand((1 << SharedFunctionInfo::kNativeBitWithinByte) | (1 << SharedFunctionInfo::kStrictModeBitWithinByte))); __ Branch(&done_convert, ne, at, Operand(zero_reg)); { // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a1 : the function to call (checked to be a JSFunction) // -- a2 : the shared function info. // -- cp : the function context. // ----------------------------------- if (mode == ConvertReceiverMode::kNullOrUndefined) { // Patch receiver to global proxy. __ LoadGlobalProxy(a3); } else { Label convert_to_object, convert_receiver; __ sll(at, a0, kPointerSizeLog2); __ addu(at, sp, at); __ lw(a3, MemOperand(at)); __ JumpIfSmi(a3, &convert_to_object); STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); __ GetObjectType(a3, t0, t0); __ Branch(&done_convert, hs, t0, Operand(FIRST_JS_RECEIVER_TYPE)); if (mode != ConvertReceiverMode::kNotNullOrUndefined) { Label convert_global_proxy; __ JumpIfRoot(a3, Heap::kUndefinedValueRootIndex, &convert_global_proxy); __ JumpIfNotRoot(a3, Heap::kNullValueRootIndex, &convert_to_object); __ bind(&convert_global_proxy); { // Patch receiver to global proxy. __ LoadGlobalProxy(a3); } __ Branch(&convert_receiver); } __ bind(&convert_to_object); { // Convert receiver using ToObject. // TODO(bmeurer): Inline the allocation here to avoid building the frame // in the fast case? (fall back to AllocateInNewSpace?) FrameScope scope(masm, StackFrame::INTERNAL); __ sll(a0, a0, kSmiTagSize); // Smi tagged. __ Push(a0, a1); __ mov(a0, a3); ToObjectStub stub(masm->isolate()); __ CallStub(&stub); __ mov(a3, v0); __ Pop(a0, a1); __ sra(a0, a0, kSmiTagSize); // Un-tag. } __ lw(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); __ bind(&convert_receiver); } __ sll(at, a0, kPointerSizeLog2); __ addu(at, sp, at); __ sw(a3, MemOperand(at)); } __ bind(&done_convert); // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a1 : the function to call (checked to be a JSFunction) // -- a2 : the shared function info. // -- cp : the function context. // ----------------------------------- __ lw(a2, FieldMemOperand(a2, SharedFunctionInfo::kFormalParameterCountOffset)); __ sra(a2, a2, kSmiTagSize); // Un-tag. ParameterCount actual(a0); ParameterCount expected(a2); __ InvokeFunctionCode(a1, no_reg, expected, actual, JUMP_FUNCTION, CheckDebugStepCallWrapper()); // The function is a "classConstructor", need to raise an exception. __ bind(&class_constructor); { FrameScope frame(masm, StackFrame::INTERNAL); __ Push(a1); __ CallRuntime(Runtime::kThrowConstructorNonCallableError); } } // static void Builtins::Generate_CallBoundFunction(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a1 : the function to call (checked to be a JSBoundFunction) // ----------------------------------- __ AssertBoundFunction(a1); // Patch the receiver to [[BoundThis]]. { __ lw(at, FieldMemOperand(a1, JSBoundFunction::kBoundThisOffset)); __ sll(t0, a0, kPointerSizeLog2); __ addu(t0, t0, sp); __ sw(at, MemOperand(t0)); } // Load [[BoundArguments]] into a2 and length of that into t0. __ lw(a2, FieldMemOperand(a1, JSBoundFunction::kBoundArgumentsOffset)); __ lw(t0, FieldMemOperand(a2, FixedArray::kLengthOffset)); __ SmiUntag(t0); // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a1 : the function to call (checked to be a JSBoundFunction) // -- a2 : the [[BoundArguments]] (implemented as FixedArray) // -- t0 : the number of [[BoundArguments]] // ----------------------------------- // Reserve stack space for the [[BoundArguments]]. { Label done; __ sll(t1, t0, kPointerSizeLog2); __ Subu(sp, sp, Operand(t1)); // Check the stack for overflow. We are not trying to catch interruptions // (i.e. debug break and preemption) here, so check the "real stack limit". __ LoadRoot(at, Heap::kRealStackLimitRootIndex); __ Branch(&done, gt, sp, Operand(at)); // Signed comparison. // Restore the stack pointer. __ Addu(sp, sp, Operand(t1)); { FrameScope scope(masm, StackFrame::MANUAL); __ EnterFrame(StackFrame::INTERNAL); __ CallRuntime(Runtime::kThrowStackOverflow); } __ bind(&done); } // Relocate arguments down the stack. { Label loop, done_loop; __ mov(t1, zero_reg); __ bind(&loop); __ Branch(&done_loop, gt, t1, Operand(a0)); __ sll(t2, t0, kPointerSizeLog2); __ addu(t2, t2, sp); __ lw(at, MemOperand(t2)); __ sll(t2, t1, kPointerSizeLog2); __ addu(t2, t2, sp); __ sw(at, MemOperand(t2)); __ Addu(t0, t0, Operand(1)); __ Addu(t1, t1, Operand(1)); __ Branch(&loop); __ bind(&done_loop); } // Copy [[BoundArguments]] to the stack (below the arguments). { Label loop, done_loop; __ lw(t0, FieldMemOperand(a2, FixedArray::kLengthOffset)); __ SmiUntag(t0); __ Addu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); __ bind(&loop); __ Subu(t0, t0, Operand(1)); __ Branch(&done_loop, lt, t0, Operand(zero_reg)); __ sll(t1, t0, kPointerSizeLog2); __ addu(t1, t1, a2); __ lw(at, MemOperand(t1)); __ sll(t1, a0, kPointerSizeLog2); __ addu(t1, t1, sp); __ sw(at, MemOperand(t1)); __ Addu(a0, a0, Operand(1)); __ Branch(&loop); __ bind(&done_loop); } // Call the [[BoundTargetFunction]] via the Call builtin. __ lw(a1, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset)); __ li(at, Operand(ExternalReference(Builtins::kCall_ReceiverIsAny, masm->isolate()))); __ lw(at, MemOperand(at)); __ Addu(at, at, Operand(Code::kHeaderSize - kHeapObjectTag)); __ Jump(at); } // static void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode) { // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a1 : the target to call (can be any Object). // ----------------------------------- Label non_callable, non_function, non_smi; __ JumpIfSmi(a1, &non_callable); __ bind(&non_smi); __ GetObjectType(a1, t1, t2); __ Jump(masm->isolate()->builtins()->CallFunction(mode), RelocInfo::CODE_TARGET, eq, t2, Operand(JS_FUNCTION_TYPE)); __ Jump(masm->isolate()->builtins()->CallBoundFunction(), RelocInfo::CODE_TARGET, eq, t2, Operand(JS_BOUND_FUNCTION_TYPE)); __ Branch(&non_function, ne, t2, Operand(JS_PROXY_TYPE)); // 1. Runtime fallback for Proxy [[Call]]. __ Push(a1); // Increase the arguments size to include the pushed function and the // existing receiver on the stack. __ Addu(a0, a0, 2); // Tail-call to the runtime. __ JumpToExternalReference( ExternalReference(Runtime::kJSProxyCall, masm->isolate())); // 2. Call to something else, which might have a [[Call]] internal method (if // not we raise an exception). __ bind(&non_function); // Check if target has a [[Call]] internal method. __ lbu(t1, FieldMemOperand(t1, Map::kBitFieldOffset)); __ And(t1, t1, Operand(1 << Map::kIsCallable)); __ Branch(&non_callable, eq, t1, Operand(zero_reg)); // Overwrite the original receiver with the (original) target. __ sll(at, a0, kPointerSizeLog2); __ addu(at, sp, at); __ sw(a1, MemOperand(at)); // Let the "call_as_function_delegate" take care of the rest. __ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, a1); __ Jump(masm->isolate()->builtins()->CallFunction( ConvertReceiverMode::kNotNullOrUndefined), RelocInfo::CODE_TARGET); // 3. Call to something that is not callable. __ bind(&non_callable); { FrameScope scope(masm, StackFrame::INTERNAL); __ Push(a1); __ CallRuntime(Runtime::kThrowCalledNonCallable); } } // static void Builtins::Generate_ConstructFunction(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a1 : the constructor to call (checked to be a JSFunction) // -- a3 : the new target (checked to be a constructor) // ----------------------------------- __ AssertFunction(a1); // Calling convention for function specific ConstructStubs require // a2 to contain either an AllocationSite or undefined. __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); // Tail call to the function-specific construct stub (still in the caller // context at this point). __ lw(t0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); __ lw(t0, FieldMemOperand(t0, SharedFunctionInfo::kConstructStubOffset)); __ Addu(at, t0, Operand(Code::kHeaderSize - kHeapObjectTag)); __ Jump(at); } // static void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a1 : the function to call (checked to be a JSBoundFunction) // -- a3 : the new target (checked to be a constructor) // ----------------------------------- __ AssertBoundFunction(a1); // Load [[BoundArguments]] into a2 and length of that into t0. __ lw(a2, FieldMemOperand(a1, JSBoundFunction::kBoundArgumentsOffset)); __ lw(t0, FieldMemOperand(a2, FixedArray::kLengthOffset)); __ SmiUntag(t0); // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a1 : the function to call (checked to be a JSBoundFunction) // -- a2 : the [[BoundArguments]] (implemented as FixedArray) // -- a3 : the new target (checked to be a constructor) // -- t0 : the number of [[BoundArguments]] // ----------------------------------- // Reserve stack space for the [[BoundArguments]]. { Label done; __ sll(t1, t0, kPointerSizeLog2); __ Subu(sp, sp, Operand(t1)); // Check the stack for overflow. We are not trying to catch interruptions // (i.e. debug break and preemption) here, so check the "real stack limit". __ LoadRoot(at, Heap::kRealStackLimitRootIndex); __ Branch(&done, gt, sp, Operand(at)); // Signed comparison. // Restore the stack pointer. __ Addu(sp, sp, Operand(t1)); { FrameScope scope(masm, StackFrame::MANUAL); __ EnterFrame(StackFrame::INTERNAL); __ CallRuntime(Runtime::kThrowStackOverflow); } __ bind(&done); } // Relocate arguments down the stack. { Label loop, done_loop; __ mov(t1, zero_reg); __ bind(&loop); __ Branch(&done_loop, ge, t1, Operand(a0)); __ sll(t2, t0, kPointerSizeLog2); __ addu(t2, t2, sp); __ lw(at, MemOperand(t2)); __ sll(t2, t1, kPointerSizeLog2); __ addu(t2, t2, sp); __ sw(at, MemOperand(t2)); __ Addu(t0, t0, Operand(1)); __ Addu(t1, t1, Operand(1)); __ Branch(&loop); __ bind(&done_loop); } // Copy [[BoundArguments]] to the stack (below the arguments). { Label loop, done_loop; __ lw(t0, FieldMemOperand(a2, FixedArray::kLengthOffset)); __ SmiUntag(t0); __ Addu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); __ bind(&loop); __ Subu(t0, t0, Operand(1)); __ Branch(&done_loop, lt, t0, Operand(zero_reg)); __ sll(t1, t0, kPointerSizeLog2); __ addu(t1, t1, a2); __ lw(at, MemOperand(t1)); __ sll(t1, a0, kPointerSizeLog2); __ addu(t1, t1, sp); __ sw(at, MemOperand(t1)); __ Addu(a0, a0, Operand(1)); __ Branch(&loop); __ bind(&done_loop); } // Patch new.target to [[BoundTargetFunction]] if new.target equals target. { Label skip_load; __ Branch(&skip_load, ne, a1, Operand(a3)); __ lw(a3, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset)); __ bind(&skip_load); } // Construct the [[BoundTargetFunction]] via the Construct builtin. __ lw(a1, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset)); __ li(at, Operand(ExternalReference(Builtins::kConstruct, masm->isolate()))); __ lw(at, MemOperand(at)); __ Addu(at, at, Operand(Code::kHeaderSize - kHeapObjectTag)); __ Jump(at); } // static void Builtins::Generate_ConstructProxy(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a1 : the constructor to call (checked to be a JSProxy) // -- a3 : the new target (either the same as the constructor or // the JSFunction on which new was invoked initially) // ----------------------------------- // Call into the Runtime for Proxy [[Construct]]. __ Push(a1, a3); // Include the pushed new_target, constructor and the receiver. __ Addu(a0, a0, Operand(3)); // Tail-call to the runtime. __ JumpToExternalReference( ExternalReference(Runtime::kJSProxyConstruct, masm->isolate())); } // static void Builtins::Generate_Construct(MacroAssembler* masm) { // ----------- S t a t e ------------- // -- a0 : the number of arguments (not including the receiver) // -- a1 : the constructor to call (can be any Object) // -- a3 : the new target (either the same as the constructor or // the JSFunction on which new was invoked initially) // ----------------------------------- // Check if target is a Smi. Label non_constructor; __ JumpIfSmi(a1, &non_constructor); // Dispatch based on instance type. __ lw(t1, FieldMemOperand(a1, HeapObject::kMapOffset)); __ lbu(t2, FieldMemOperand(t1, Map::kInstanceTypeOffset)); __ Jump(masm->isolate()->builtins()->ConstructFunction(), RelocInfo::CODE_TARGET, eq, t2, Operand(JS_FUNCTION_TYPE)); // Check if target has a [[Construct]] internal method. __ lbu(t3, FieldMemOperand(t1, Map::kBitFieldOffset)); __ And(t3, t3, Operand(1 << Map::kIsConstructor)); __ Branch(&non_constructor, eq, t3, Operand(zero_reg)); // Only dispatch to bound functions after checking whether they are // constructors. __ Jump(masm->isolate()->builtins()->ConstructBoundFunction(), RelocInfo::CODE_TARGET, eq, t2, Operand(JS_BOUND_FUNCTION_TYPE)); // Only dispatch to proxies after checking whether they are constructors. __ Jump(masm->isolate()->builtins()->ConstructProxy(), RelocInfo::CODE_TARGET, eq, t2, Operand(JS_PROXY_TYPE)); // Called Construct on an exotic Object with a [[Construct]] internal method. { // Overwrite the original receiver with the (original) target. __ sll(at, a0, kPointerSizeLog2); __ addu(at, sp, at); __ sw(a1, MemOperand(at)); // Let the "call_as_constructor_delegate" take care of the rest. __ LoadNativeContextSlot(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, a1); __ Jump(masm->isolate()->builtins()->CallFunction(), RelocInfo::CODE_TARGET); } // Called Construct on an Object that doesn't have a [[Construct]] internal // method. __ bind(&non_constructor); __ Jump(masm->isolate()->builtins()->ConstructedNonConstructable(), RelocInfo::CODE_TARGET); } void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { // State setup as expected by MacroAssembler::InvokePrologue. // ----------- S t a t e ------------- // -- a0: actual arguments count // -- a1: function (passed through to callee) // -- a2: expected arguments count // -- a3: new target (passed through to callee) // ----------------------------------- Label invoke, dont_adapt_arguments, stack_overflow; Label enough, too_few; __ Branch(&dont_adapt_arguments, eq, a2, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel)); // We use Uless as the number of argument should always be greater than 0. __ Branch(&too_few, Uless, a0, Operand(a2)); { // Enough parameters: actual >= expected. // a0: actual number of arguments as a smi // a1: function // a2: expected number of arguments // a3: new target (passed through to callee) __ bind(&enough); EnterArgumentsAdaptorFrame(masm); ArgumentAdaptorStackCheck(masm, &stack_overflow); // Calculate copy start address into a0 and copy end address into t1. __ sll(a0, a0, kPointerSizeLog2 - kSmiTagSize); __ Addu(a0, fp, a0); // Adjust for return address and receiver. __ Addu(a0, a0, Operand(2 * kPointerSize)); // Compute copy end address. __ sll(t1, a2, kPointerSizeLog2); __ subu(t1, a0, t1); // Copy the arguments (including the receiver) to the new stack frame. // a0: copy start address // a1: function // a2: expected number of arguments // a3: new target (passed through to callee) // t1: copy end address Label copy; __ bind(©); __ lw(t0, MemOperand(a0)); __ push(t0); __ Branch(USE_DELAY_SLOT, ©, ne, a0, Operand(t1)); __ addiu(a0, a0, -kPointerSize); // In delay slot. __ jmp(&invoke); } { // Too few parameters: Actual < expected. __ bind(&too_few); // If the function is strong we need to throw an error. Label no_strong_error; __ lw(t1, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); __ lw(t2, FieldMemOperand(t1, SharedFunctionInfo::kCompilerHintsOffset)); __ And(t3, t2, Operand(1 << (SharedFunctionInfo::kStrongModeFunction + kSmiTagSize))); __ Branch(&no_strong_error, eq, t3, Operand(zero_reg)); // What we really care about is the required number of arguments. __ lw(t2, FieldMemOperand(t1, SharedFunctionInfo::kLengthOffset)); __ SmiUntag(t2); __ Branch(&no_strong_error, ge, a0, Operand(t2)); { FrameScope frame(masm, StackFrame::MANUAL); EnterArgumentsAdaptorFrame(masm); __ CallRuntime(Runtime::kThrowStrongModeTooFewArguments); } __ bind(&no_strong_error); EnterArgumentsAdaptorFrame(masm); ArgumentAdaptorStackCheck(masm, &stack_overflow); // Calculate copy start address into a0 and copy end address into t3. // a0: actual number of arguments as a smi // a1: function // a2: expected number of arguments // a3: new target (passed through to callee) __ sll(a0, a0, kPointerSizeLog2 - kSmiTagSize); __ Addu(a0, fp, a0); // Adjust for return address and receiver. __ Addu(a0, a0, Operand(2 * kPointerSize)); // Compute copy end address. Also adjust for return address. __ Addu(t3, fp, kPointerSize); // Copy the arguments (including the receiver) to the new stack frame. // a0: copy start address // a1: function // a2: expected number of arguments // a3: new target (passed through to callee) // t3: copy end address Label copy; __ bind(©); __ lw(t0, MemOperand(a0)); // Adjusted above for return addr and receiver. __ Subu(sp, sp, kPointerSize); __ Subu(a0, a0, kPointerSize); __ Branch(USE_DELAY_SLOT, ©, ne, a0, Operand(t3)); __ sw(t0, MemOperand(sp)); // In the delay slot. // Fill the remaining expected arguments with undefined. // a1: function // a2: expected number of arguments // a3: new target (passed through to callee) __ LoadRoot(t0, Heap::kUndefinedValueRootIndex); __ sll(t2, a2, kPointerSizeLog2); __ Subu(t1, fp, Operand(t2)); // Adjust for frame. __ Subu(t1, t1, Operand(StandardFrameConstants::kFixedFrameSizeFromFp + 2 * kPointerSize)); Label fill; __ bind(&fill); __ Subu(sp, sp, kPointerSize); __ Branch(USE_DELAY_SLOT, &fill, ne, sp, Operand(t1)); __ sw(t0, MemOperand(sp)); } // Call the entry point. __ bind(&invoke); __ mov(a0, a2); // a0 : expected number of arguments // a1 : function (passed through to callee) // a3 : new target (passed through to callee) __ lw(t0, FieldMemOperand(a1, JSFunction::kCodeEntryOffset)); __ Call(t0); // Store offset of return address for deoptimizer. masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset()); // Exit frame and return. LeaveArgumentsAdaptorFrame(masm); __ Ret(); // ------------------------------------------- // Don't adapt arguments. // ------------------------------------------- __ bind(&dont_adapt_arguments); __ lw(t0, FieldMemOperand(a1, JSFunction::kCodeEntryOffset)); __ Jump(t0); __ bind(&stack_overflow); { FrameScope frame(masm, StackFrame::MANUAL); __ CallRuntime(Runtime::kThrowStackOverflow); __ break_(0xCC); } } #undef __ } // namespace internal } // namespace v8 #endif // V8_TARGET_ARCH_MIPS