Upgrade V8 to version 4.9.385.28
https://chromium.googlesource.com/v8/v8/+/4.9.385.28
FPIIM-449
Change-Id: I4b2e74289d4bf3667f2f3dc8aa2e541f63e26eb4
diff --git a/src/mips64/builtins-mips64.cc b/src/mips64/builtins-mips64.cc
index c95ff30..3a9980b 100644
--- a/src/mips64/builtins-mips64.cc
+++ b/src/mips64/builtins-mips64.cc
@@ -2,16 +2,12 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-
-
-#include "src/v8.h"
-
#if V8_TARGET_ARCH_MIPS64
#include "src/codegen.h"
-#include "src/debug.h"
+#include "src/debug/debug.h"
#include "src/deoptimizer.h"
-#include "src/full-codegen.h"
+#include "src/full-codegen/full-codegen.h"
#include "src/runtime/runtime.h"
namespace v8 {
@@ -26,27 +22,44 @@
BuiltinExtraArguments extra_args) {
// ----------- S t a t e -------------
// -- a0 : number of arguments excluding receiver
- // -- a1 : called function (only guaranteed when
- // -- extra_args requires it)
- // -- cp : context
+ // -- a1 : target
+ // -- a3 : new.target
// -- sp[0] : last argument
// -- ...
// -- sp[8 * (argc - 1)] : first argument
// -- sp[8 * 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).
+ __ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
// Insert extra arguments.
int num_extra_args = 0;
- if (extra_args == NEEDS_CALLED_FUNCTION) {
- num_extra_args = 1;
- __ push(a1);
- } else {
- DCHECK(extra_args == NO_EXTRA_ARGUMENTS);
+ 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.
__ Daddu(a0, a0, num_extra_args + 1);
+
__ JumpToExternalReference(ExternalReference(id, masm->isolate()));
}
@@ -54,32 +67,15 @@
// Load the built-in InternalArray function from the current context.
static void GenerateLoadInternalArrayFunction(MacroAssembler* masm,
Register result) {
- // Load the native context.
-
- __ ld(result,
- MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
- __ ld(result,
- FieldMemOperand(result, GlobalObject::kNativeContextOffset));
// Load the InternalArray function from the native context.
- __ ld(result,
- MemOperand(result,
- Context::SlotOffset(
- Context::INTERNAL_ARRAY_FUNCTION_INDEX)));
+ __ 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 native context.
-
- __ ld(result,
- MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
- __ ld(result,
- FieldMemOperand(result, GlobalObject::kNativeContextOffset));
// Load the Array function from the native context.
- __ ld(result,
- MemOperand(result,
- Context::SlotOffset(Context::ARRAY_FUNCTION_INDEX)));
+ __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, result);
}
@@ -137,13 +133,15 @@
// 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);
}
-void Builtins::Generate_StringConstructCode(MacroAssembler* masm) {
+// static
+void Builtins::Generate_NumberConstructor(MacroAssembler* masm) {
// ----------- S t a t e -------------
// -- a0 : number of arguments
// -- a1 : constructor function
@@ -151,134 +149,242 @@
// -- sp[(argc - n - 1) * 8] : arg[n] (zero based)
// -- sp[argc * 8] : receiver
// -----------------------------------
- Counters* counters = masm->isolate()->counters();
- __ IncrementCounter(counters->string_ctor_calls(), 1, a2, a3);
- Register function = a1;
- if (FLAG_debug_code) {
- __ LoadGlobalFunction(Context::STRING_FUNCTION_INDEX, a2);
- __ Assert(eq, kUnexpectedStringFunction, function, Operand(a2));
+ // 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));
+ __ Dsubu(a0, a0, Operand(1));
+ __ dsll(a0, a0, kPointerSizeLog2);
+ __ Daddu(sp, a0, sp);
+ __ ld(a0, MemOperand(sp));
+ __ Drop(2);
}
- // Load the first arguments in a0 and get rid of the rest.
- Label no_arguments;
- __ Branch(&no_arguments, eq, a0, Operand(zero_reg));
- // First args = sp[(argc - 1) * 8].
- __ Dsubu(a0, a0, Operand(1));
- __ dsll(a0, a0, kPointerSizeLog2);
- __ Daddu(sp, a0, sp);
- __ ld(a0, MemOperand(sp));
- // sp now point to args[0], drop args[0] + receiver.
- __ Drop(2);
+ // 2a. Convert first argument to number.
+ ToNumberStub stub(masm->isolate());
+ __ TailCallStub(&stub);
- Register argument = a2;
- Label not_cached, argument_is_string;
- __ LookupNumberStringCache(a0, // Input.
- argument, // Result.
- a3, // Scratch.
- a4, // Scratch.
- a5, // Scratch.
- ¬_cached);
- __ IncrementCounter(counters->string_ctor_cached_number(), 1, a3, a4);
- __ bind(&argument_is_string);
+ // 2b. No arguments, return +0.
+ __ bind(&no_arguments);
+ __ Move(v0, Smi::FromInt(0));
+ __ DropAndRet(1);
+}
+
+void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
// ----------- S t a t e -------------
- // -- a2 : argument converted to string
- // -- a1 : constructor function
- // -- ra : return address
+ // -- a0 : number of arguments
+ // -- a1 : constructor function
+ // -- a3 : new target
+ // -- ra : return address
+ // -- sp[(argc - n - 1) * 8] : arg[n] (zero based)
+ // -- sp[argc * 8] : receiver
// -----------------------------------
- Label gc_required;
- __ Allocate(JSValue::kSize,
- v0, // Result.
- a3, // Scratch.
- a4, // Scratch.
- &gc_required,
- TAG_OBJECT);
+ // 1. Make sure we operate in the context of the called function.
+ __ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
- // Initialising the String Object.
- Register map = a3;
- __ LoadGlobalFunctionInitialMap(function, map, a4);
- if (FLAG_debug_code) {
- __ lbu(a4, FieldMemOperand(map, Map::kInstanceSizeOffset));
- __ Assert(eq, kUnexpectedStringWrapperInstanceSize,
- a4, Operand(JSValue::kSize >> kPointerSizeLog2));
- __ lbu(a4, FieldMemOperand(map, Map::kUnusedPropertyFieldsOffset));
- __ Assert(eq, kUnexpectedUnusedPropertiesOfStringWrapper,
- a4, Operand(zero_reg));
+ // 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));
+ __ Dsubu(a0, a0, Operand(1));
+ __ dsll(a0, a0, kPointerSizeLog2);
+ __ Daddu(sp, a0, sp);
+ __ ld(a0, MemOperand(sp));
+ __ Drop(2);
+ __ jmp(&done);
+ __ bind(&no_arguments);
+ __ Move(a0, Smi::FromInt(0));
+ __ Drop(1);
+ __ bind(&done);
}
- __ sd(map, FieldMemOperand(v0, HeapObject::kMapOffset));
- __ LoadRoot(a3, Heap::kEmptyFixedArrayRootIndex);
- __ sd(a3, FieldMemOperand(v0, JSObject::kPropertiesOffset));
- __ sd(a3, FieldMemOperand(v0, JSObject::kElementsOffset));
+ // 3. Make sure a0 is a number.
+ {
+ Label done_convert;
+ __ JumpIfSmi(a0, &done_convert);
+ __ GetObjectType(a0, a2, a2);
+ __ Branch(&done_convert, eq, t0, 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);
+ }
- __ sd(argument, FieldMemOperand(v0, JSValue::kValueOffset));
+ // 4. Check if new target and constructor differ.
+ Label new_object;
+ __ Branch(&new_object, ne, a1, Operand(a3));
- // Ensure the object is fully initialized.
- STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize);
-
+ // 5. Allocate a JSValue wrapper for the number.
+ __ AllocateJSValue(v0, a1, a0, a2, t0, &new_object);
__ Ret();
- // The argument was not found in the number to string cache. Check
- // if it's a string already before calling the conversion builtin.
- Label convert_argument;
- __ bind(¬_cached);
- __ JumpIfSmi(a0, &convert_argument);
-
- // Is it a String?
- __ ld(a2, FieldMemOperand(a0, HeapObject::kMapOffset));
- __ lbu(a3, FieldMemOperand(a2, Map::kInstanceTypeOffset));
- STATIC_ASSERT(kNotStringTag != 0);
- __ And(a4, a3, Operand(kIsNotStringMask));
- __ Branch(&convert_argument, ne, a4, Operand(zero_reg));
- __ mov(argument, a0);
- __ IncrementCounter(counters->string_ctor_conversions(), 1, a3, a4);
- __ Branch(&argument_is_string);
-
- // Invoke the conversion builtin and put the result into a2.
- __ bind(&convert_argument);
- __ push(function); // Preserve the function.
- __ IncrementCounter(counters->string_ctor_conversions(), 1, a3, a4);
+ // 6. Fallback to the runtime to create new object.
+ __ bind(&new_object);
{
FrameScope scope(masm, StackFrame::INTERNAL);
- __ push(a0);
- __ InvokeBuiltin(Builtins::TO_STRING, CALL_FUNCTION);
+ __ Push(a0, a1, a3); // first argument, constructor, new target
+ __ CallRuntime(Runtime::kNewObject);
+ __ Pop(a0);
}
- __ pop(function);
- __ mov(argument, v0);
- __ Branch(&argument_is_string);
+ __ Ret(USE_DELAY_SLOT);
+ __ sd(a0, FieldMemOperand(v0, JSValue::kValueOffset)); // In delay slot.
+}
- // Load the empty string into a2, remove the receiver from the
- // stack, and jump back to the case where the argument is a string.
+
+// 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) * 8] : arg[n] (zero based)
+ // -- sp[argc * 8] : 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));
+ __ Dsubu(a0, a0, Operand(1));
+ __ dsll(a0, a0, kPointerSizeLog2);
+ __ Daddu(sp, a0, sp);
+ __ ld(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(argument, Heap::kempty_stringRootIndex);
- __ Drop(1);
- __ Branch(&argument_is_string);
+ {
+ __ LoadRoot(v0, Heap::kempty_stringRootIndex);
+ __ DropAndRet(1);
+ }
- // At this point the argument is already a string. Call runtime to
- // create a string wrapper.
- __ bind(&gc_required);
- __ IncrementCounter(counters->string_ctor_gc_required(), 1, a3, a4);
+ // 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);
+ }
+}
+
+
+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) * 8] : arg[n] (zero based)
+ // -- sp[argc * 8] : receiver
+ // -----------------------------------
+
+ // 1. Make sure we operate in the context of the called function.
+ __ ld(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));
+ __ Dsubu(a0, a0, Operand(1));
+ __ dsll(a0, a0, kPointerSizeLog2);
+ __ Daddu(sp, a0, sp);
+ __ ld(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(argument);
- __ CallRuntime(Runtime::kNewStringWrapper, 1);
+ __ Push(a0, a1, a3); // first argument, constructor, new target
+ __ CallRuntime(Runtime::kNewObject);
+ __ Pop(a0);
}
- __ Ret();
+ __ Ret(USE_DELAY_SLOT);
+ __ sd(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 function onto the stack.
- // Push call kind information and function as parameter to the runtime call.
- __ Push(a1, a1);
+ // Push a copy of the target function and the new target.
+ __ Push(a1, a3, a1);
__ CallRuntime(function_id, 1);
- // Restore call kind information and receiver.
- __ Pop(a1);
+ // Restore target function and new target.
+ __ Pop(a1, a3);
}
@@ -316,367 +422,206 @@
static void Generate_JSConstructStubHelper(MacroAssembler* masm,
bool is_api_function,
- bool create_memento) {
+ 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
// -----------------------------------
- // Should never create mementos for api functions.
- DCHECK(!is_api_function || !create_memento);
-
Isolate* isolate = masm->isolate();
- // ----------- S t a t e -------------
- // -- a0 : number of arguments
- // -- a1 : constructor function
- // -- ra : return address
- // -- sp[...]: constructor arguments
- // -----------------------------------
-
// Enter a construct frame.
{
FrameScope scope(masm, StackFrame::CONSTRUCT);
- if (create_memento) {
- __ AssertUndefinedOrAllocationSite(a2, a3);
- __ push(a2);
- }
+ // Preserve the incoming parameters on the stack.
+ __ AssertUndefinedOrAllocationSite(a2, t0);
+ __ SmiTag(a0);
+ __ Push(a2, a0);
- // Preserve the two incoming parameters on the stack.
- // Tag arguments count.
- __ dsll32(a0, a0, 0);
- __ MultiPushReversed(a0.bit() | a1.bit());
+ 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, a5, a4);
+ __ Branch(&rt_call, ne, a4, Operand(JS_FUNCTION_TYPE));
- Label rt_call, allocated;
- // 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.
- if (FLAG_inline_new) {
- Label undo_allocation;
- ExternalReference debug_step_in_fp =
- ExternalReference::debug_step_in_fp_address(isolate);
- __ li(a2, Operand(debug_step_in_fp));
- __ ld(a2, MemOperand(a2));
- __ Branch(&rt_call, ne, a2, Operand(zero_reg));
+ // Load the initial map and verify that it is in fact a map.
+ // a3: new target
+ __ ld(a2,
+ FieldMemOperand(a3, JSFunction::kPrototypeOrInitialMapOffset));
+ __ JumpIfSmi(a2, &rt_call);
+ __ GetObjectType(a2, t1, t0);
+ __ Branch(&rt_call, ne, t0, Operand(MAP_TYPE));
- // Load the initial map and verify that it is in fact a map.
- // a1: constructor function
- __ ld(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset));
- __ JumpIfSmi(a2, &rt_call);
- __ GetObjectType(a2, a3, t0);
- __ Branch(&rt_call, ne, t0, Operand(MAP_TYPE));
+ // Fall back to runtime if the expected base constructor and base
+ // constructor differ.
+ __ ld(a5, FieldMemOperand(a2, Map::kConstructorOrBackPointerOffset));
+ __ Branch(&rt_call, ne, a1, Operand(a5));
- // 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(a3, FieldMemOperand(a2, Map::kInstanceTypeOffset));
- __ Branch(&rt_call, eq, a3, Operand(JS_FUNCTION_TYPE));
+ // 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(t1, FieldMemOperand(a2, Map::kInstanceTypeOffset));
+ __ Branch(&rt_call, eq, t1, Operand(JS_FUNCTION_TYPE));
- if (!is_api_function) {
- Label allocate;
- MemOperand bit_field3 = FieldMemOperand(a2, Map::kBitField3Offset);
- // Check if slack tracking is enabled.
- __ lwu(a4, bit_field3);
- __ DecodeField<Map::Counter>(a6, a4);
- __ Branch(&allocate, lt, a6,
- Operand(static_cast<int64_t>(Map::kSlackTrackingCounterEnd)));
- // Decrease generous allocation count.
- __ Dsubu(a4, a4, Operand(1 << Map::Counter::kShift));
- __ Branch(USE_DELAY_SLOT, &allocate, ne, a6,
- Operand(Map::kSlackTrackingCounterEnd));
- __ sw(a4, bit_field3); // In delay slot.
+ // Now allocate the JSObject on the heap.
+ // a1: constructor function
+ // a2: initial map
+ __ lbu(a4, FieldMemOperand(a2, Map::kInstanceSizeOffset));
+ __ Allocate(a4, t0, a4, t2, &rt_call, SIZE_IN_WORDS);
- __ Push(a1, a2, a1); // a1 = Constructor.
- __ CallRuntime(Runtime::kFinalizeInstanceSize, 1);
+ // 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: object size
+ // t0: JSObject (not HeapObject tagged - the actual address).
+ // a4: start of next object
+ __ LoadRoot(t2, Heap::kEmptyFixedArrayRootIndex);
+ __ mov(t1, t0);
+ STATIC_ASSERT(0 * kPointerSize == JSObject::kMapOffset);
+ __ sd(a2, MemOperand(t1, JSObject::kMapOffset));
+ STATIC_ASSERT(1 * kPointerSize == JSObject::kPropertiesOffset);
+ __ sd(t2, MemOperand(t1, JSObject::kPropertiesOffset));
+ STATIC_ASSERT(2 * kPointerSize == JSObject::kElementsOffset);
+ __ sd(t2, MemOperand(t1, JSObject::kElementsOffset));
+ STATIC_ASSERT(3 * kPointerSize == JSObject::kHeaderSize);
+ __ Daddu(t1, t1, Operand(3 * kPointerSize));
- __ Pop(a1, a2);
- // Slack tracking counter is Map::kSlackTrackingCounterEnd after runtime
- // call.
- __ li(a6, Map::kSlackTrackingCounterEnd);
+ // 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.
+ __ Daddu(t0, t0, Operand(kHeapObjectTag));
- __ bind(&allocate);
- }
+ // Fill all the in-object properties with appropriate filler.
+ // t0: JSObject (tagged)
+ // t1: First in-object property of JSObject (not tagged)
+ __ LoadRoot(t3, Heap::kUndefinedValueRootIndex);
- // Now allocate the JSObject on the heap.
- // a1: constructor function
- // a2: initial map
- __ lbu(a3, FieldMemOperand(a2, Map::kInstanceSizeOffset));
- if (create_memento) {
- __ Daddu(a3, a3, Operand(AllocationMemento::kSize / kPointerSize));
- }
+ if (!is_api_function) {
+ Label no_inobject_slack_tracking;
- __ Allocate(a3, t0, t1, t2, &rt_call, SIZE_IN_WORDS);
+ MemOperand bit_field3 = FieldMemOperand(a2, Map::kBitField3Offset);
+ // Check if slack tracking is enabled.
+ __ lwu(t2, bit_field3);
+ __ DecodeField<Map::ConstructionCounter>(a6, t2);
+ // a6: slack tracking counter
+ __ Branch(&no_inobject_slack_tracking, lt, a6,
+ Operand(Map::kSlackTrackingCounterEnd));
+ // Decrease generous allocation count.
+ __ Dsubu(t2, t2, Operand(1 << Map::ConstructionCounter::kShift));
+ __ sw(t2, bit_field3);
- // 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: object size (not including memento if create_memento)
- // t0: JSObject (not tagged)
- __ LoadRoot(t2, Heap::kEmptyFixedArrayRootIndex);
- __ mov(t1, t0);
- __ sd(a2, MemOperand(t1, JSObject::kMapOffset));
- __ sd(t2, MemOperand(t1, JSObject::kPropertiesOffset));
- __ sd(t2, MemOperand(t1, JSObject::kElementsOffset));
- __ Daddu(t1, t1, Operand(3*kPointerSize));
- DCHECK_EQ(0 * kPointerSize, JSObject::kMapOffset);
- DCHECK_EQ(1 * kPointerSize, JSObject::kPropertiesOffset);
- DCHECK_EQ(2 * kPointerSize, JSObject::kElementsOffset);
+ // Allocate object with a slack.
+ __ lbu(a0, FieldMemOperand(a2, Map::kUnusedPropertyFieldsOffset));
+ __ dsll(a0, a0, kPointerSizeLog2);
+ __ dsubu(a0, a4, a0);
+ // a0: offset of first field after pre-allocated fields
+ if (FLAG_debug_code) {
+ __ Assert(le, kUnexpectedNumberOfPreAllocatedPropertyFields, t1,
+ Operand(a0));
+ }
+ __ InitializeFieldsWithFiller(t1, a0, t3);
- // Fill all the in-object properties with appropriate filler.
- // a1: constructor function
- // a2: initial map
- // a3: object size (in words, including memento if create_memento)
- // t0: JSObject (not tagged)
- // t1: First in-object property of JSObject (not tagged)
- // a6: slack tracking counter (non-API function case)
- DCHECK_EQ(3 * kPointerSize, JSObject::kHeaderSize);
+ // To allow truncation fill the remaining fields with one pointer
+ // filler map.
+ __ LoadRoot(t3, Heap::kOnePointerFillerMapRootIndex);
+ __ InitializeFieldsWithFiller(t1, a4, t3);
- // Use t3 to hold undefined, which is used in several places below.
- __ LoadRoot(t3, Heap::kUndefinedValueRootIndex);
+ // a6: slack tracking counter value before decreasing.
+ __ Branch(&allocated, ne, a6, Operand(Map::kSlackTrackingCounterEnd));
- if (!is_api_function) {
- Label no_inobject_slack_tracking;
+ // 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, t0, a2);
+ __ CallRuntime(Runtime::kFinalizeInstanceSize);
+ __ Pop(a1, a3, t0);
- // Check if slack tracking is enabled.
- __ Branch(&no_inobject_slack_tracking, lt, a6,
- Operand(static_cast<int64_t>(Map::kSlackTrackingCounterEnd)));
+ // Continue with JSObject being successfully allocated.
+ // a1: constructor function
+ // a3: new target
+ // t0: JSObject
+ __ jmp(&allocated);
- // Allocate object with a slack.
- __ lwu(a0, FieldMemOperand(a2, Map::kInstanceSizesOffset));
- __ Ext(a0, a0, Map::kPreAllocatedPropertyFieldsByte * kBitsPerByte,
- kBitsPerByte);
- __ dsll(at, a0, kPointerSizeLog2);
- __ daddu(a0, t1, at);
- // a0: offset of first field after pre-allocated fields
- if (FLAG_debug_code) {
- __ dsll(at, a3, kPointerSizeLog2);
- __ Daddu(t2, t0, Operand(at)); // End of object.
- __ Assert(le, kUnexpectedNumberOfPreAllocatedPropertyFields,
- a0, Operand(t2));
+ __ bind(&no_inobject_slack_tracking);
}
- __ InitializeFieldsWithFiller(t1, a0, t3);
- // To allow for truncation.
- __ LoadRoot(t3, Heap::kOnePointerFillerMapRootIndex);
- // Fill the remaining fields with one pointer filler map.
- __ bind(&no_inobject_slack_tracking);
+ __ InitializeFieldsWithFiller(t1, a4, t3);
+
+ // Continue with JSObject being successfully allocated.
+ // a1: constructor function
+ // a3: new target
+ // t0: JSObject
+ __ jmp(&allocated);
}
- if (create_memento) {
- __ Dsubu(a0, a3, Operand(AllocationMemento::kSize / kPointerSize));
- __ dsll(a0, a0, kPointerSizeLog2);
- __ Daddu(a0, t0, Operand(a0)); // End of object.
- __ InitializeFieldsWithFiller(t1, a0, t3);
-
- // Fill in memento fields.
- // t1: points to the allocated but uninitialized memento.
- __ LoadRoot(t3, Heap::kAllocationMementoMapRootIndex);
- DCHECK_EQ(0 * kPointerSize, AllocationMemento::kMapOffset);
- __ sd(t3, MemOperand(t1));
- __ Daddu(t1, t1, kPointerSize);
- // Load the AllocationSite.
- __ ld(t3, MemOperand(sp, 2 * kPointerSize));
- DCHECK_EQ(1 * kPointerSize, AllocationMemento::kAllocationSiteOffset);
- __ sd(t3, MemOperand(t1));
- __ Daddu(t1, t1, kPointerSize);
- } else {
- __ dsll(at, a3, kPointerSizeLog2);
- __ Daddu(a0, t0, Operand(at)); // End of object.
- __ InitializeFieldsWithFiller(t1, a0, t3);
- }
-
- // 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. Any
- // failures need to undo the allocation, so that the heap is in a
- // consistent state and verifiable.
- __ Daddu(t0, t0, Operand(kHeapObjectTag));
-
- // Check if a non-empty properties array is needed. Continue with
- // allocated object if not fall through to runtime call if it is.
+ // Allocate the new receiver object using the runtime call.
// a1: constructor function
- // t0: JSObject
- // t1: start of next object (not tagged)
- __ lbu(a3, FieldMemOperand(a2, Map::kUnusedPropertyFieldsOffset));
- // The field instance sizes contains both pre-allocated property fields
- // and in-object properties.
- __ lw(a0, FieldMemOperand(a2, Map::kInstanceSizesOffset));
- __ Ext(t2, a0, Map::kPreAllocatedPropertyFieldsByte * kBitsPerByte,
- kBitsPerByte);
- __ Daddu(a3, a3, Operand(t2));
- __ Ext(t2, a0, Map::kInObjectPropertiesByte * kBitsPerByte,
- kBitsPerByte);
- __ dsubu(a3, a3, t2);
+ // a3: new target
+ __ bind(&rt_call);
- // Done if no extra properties are to be allocated.
- __ Branch(&allocated, eq, a3, Operand(zero_reg));
- __ Assert(greater_equal, kPropertyAllocationCountFailed,
- a3, Operand(zero_reg));
+ // 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(t0, v0);
+ __ Pop(a1, a3);
- // Scale the number of elements by pointer size and add the header for
- // FixedArrays to the start of the next object calculation from above.
- // a1: constructor
- // a3: number of elements in properties array
- // t0: JSObject
- // t1: start of next object
- __ Daddu(a0, a3, Operand(FixedArray::kHeaderSize / kPointerSize));
- __ Allocate(
- a0,
- t1,
- t2,
- a2,
- &undo_allocation,
- static_cast<AllocationFlags>(RESULT_CONTAINS_TOP | SIZE_IN_WORDS));
-
- // Initialize the FixedArray.
- // a1: constructor
- // a3: number of elements in properties array (untagged)
- // t0: JSObject
- // t1: start of next object
- __ LoadRoot(t2, Heap::kFixedArrayMapRootIndex);
- __ mov(a2, t1);
- __ sd(t2, MemOperand(a2, JSObject::kMapOffset));
- // Tag number of elements.
- __ dsll32(a0, a3, 0);
- __ sd(a0, MemOperand(a2, FixedArray::kLengthOffset));
- __ Daddu(a2, a2, Operand(2 * kPointerSize));
-
- DCHECK_EQ(0 * kPointerSize, JSObject::kMapOffset);
- DCHECK_EQ(1 * kPointerSize, FixedArray::kLengthOffset);
-
- // Initialize the fields to undefined.
- // a1: constructor
- // a2: First element of FixedArray (not tagged)
- // a3: number of elements in properties array
- // t0: JSObject
- // t1: FixedArray (not tagged)
- __ dsll(a7, a3, kPointerSizeLog2);
- __ daddu(t2, a2, a7); // End of object.
- DCHECK_EQ(2 * kPointerSize, FixedArray::kHeaderSize);
- { Label loop, entry;
- if (!is_api_function || create_memento) {
- __ LoadRoot(t3, Heap::kUndefinedValueRootIndex);
- } else if (FLAG_debug_code) {
- __ LoadRoot(a6, Heap::kUndefinedValueRootIndex);
- __ Assert(eq, kUndefinedValueNotLoaded, t3, Operand(a6));
- }
- __ jmp(&entry);
- __ bind(&loop);
- __ sd(t3, MemOperand(a2));
- __ daddiu(a2, a2, kPointerSize);
- __ bind(&entry);
- __ Branch(&loop, less, a2, Operand(t2));
- }
-
- // Store the initialized FixedArray into the properties field of
- // the JSObject.
+ // Receiver for constructor call allocated.
// a1: constructor function
+ // a3: new target
// t0: JSObject
- // t1: FixedArray (not tagged)
- __ Daddu(t1, t1, Operand(kHeapObjectTag)); // Add the heap tag.
- __ sd(t1, FieldMemOperand(t0, JSObject::kPropertiesOffset));
+ __ bind(&allocated);
- // Continue with JSObject being successfully allocated.
- // a1: constructor function
- // a4: JSObject
- __ jmp(&allocated);
-
- // Undo the setting of the new top so that the heap is verifiable. For
- // example, the map's unused properties potentially do not match the
- // allocated objects unused properties.
- // t0: JSObject (previous new top)
- __ bind(&undo_allocation);
- __ UndoAllocationInNewSpace(t0, t1);
+ __ ld(a0, MemOperand(sp));
}
+ __ SmiUntag(a0);
- // Allocate the new receiver object using the runtime call.
- // a1: constructor function
- __ bind(&rt_call);
- if (create_memento) {
- // Get the cell or allocation site.
- __ ld(a2, MemOperand(sp, 2 * kPointerSize));
- __ push(a2);
- }
-
- __ push(a1); // Argument for Runtime_NewObject.
- if (create_memento) {
- __ CallRuntime(Runtime::kNewObjectWithAllocationSite, 2);
+ 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(t0, t0);
} else {
- __ CallRuntime(Runtime::kNewObject, 1);
+ __ PushRoot(Heap::kTheHoleValueRootIndex);
}
- __ mov(t0, v0);
-
- // If we ended up using the runtime, and we want a memento, then the
- // runtime call made it for us, and we shouldn't do create count
- // increment.
- Label count_incremented;
- if (create_memento) {
- __ jmp(&count_incremented);
- }
-
- // Receiver for constructor call allocated.
- // t0: JSObject
- __ bind(&allocated);
-
- if (create_memento) {
- __ ld(a2, MemOperand(sp, kPointerSize * 2));
- __ LoadRoot(t1, Heap::kUndefinedValueRootIndex);
- __ Branch(&count_incremented, eq, a2, Operand(t1));
- // a2 is an AllocationSite. We are creating a memento from it, so we
- // need to increment the memento create count.
- __ ld(a3, FieldMemOperand(a2,
- AllocationSite::kPretenureCreateCountOffset));
- __ Daddu(a3, a3, Operand(Smi::FromInt(1)));
- __ sd(a3, FieldMemOperand(a2,
- AllocationSite::kPretenureCreateCountOffset));
- __ bind(&count_incremented);
- }
-
- __ Push(t0, t0);
-
- // Reload the number of arguments from the stack.
- // sp[0]: receiver
- // sp[1]: receiver
- // sp[2]: constructor function
- // sp[3]: number of arguments (smi-tagged)
- __ ld(a1, MemOperand(sp, 2 * kPointerSize));
- __ ld(a3, MemOperand(sp, 3 * kPointerSize));
// Set up pointer to last argument.
__ Daddu(a2, fp, Operand(StandardFrameConstants::kCallerSPOffset));
- // Set up number of arguments for function call below.
- __ SmiUntag(a0, a3);
-
// Copy arguments and receiver to the expression stack.
// a0: number of arguments
// a1: constructor function
// a2: address of last argument (caller sp)
- // a3: number of arguments (smi-tagged)
+ // a3: new target
+ // t0: number of arguments (smi-tagged)
// sp[0]: receiver
// sp[1]: receiver
- // sp[2]: constructor function
- // sp[3]: number of arguments (smi-tagged)
+ // sp[2]: number of arguments (smi-tagged)
Label loop, entry;
- __ SmiUntag(a3);
+ __ mov(t0, a0);
__ jmp(&entry);
__ bind(&loop);
- __ dsll(a4, a3, kPointerSizeLog2);
+ __ dsll(a4, t0, kPointerSizeLog2);
__ Daddu(a4, a2, Operand(a4));
__ ld(a5, MemOperand(a4));
__ push(a5);
__ bind(&entry);
- __ Daddu(a3, a3, Operand(-1));
- __ Branch(&loop, greater_equal, a3, Operand(zero_reg));
+ __ Daddu(t0, t0, Operand(-1));
+ __ Branch(&loop, greater_equal, t0, Operand(zero_reg));
// Call the function.
// a0: number of arguments
// a1: constructor function
+ // a3: new target
if (is_api_function) {
__ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
Handle<Code> code =
@@ -684,47 +629,50 @@
__ Call(code, RelocInfo::CODE_TARGET);
} else {
ParameterCount actual(a0);
- __ InvokeFunction(a1, actual, CALL_FUNCTION, NullCallWrapper());
+ __ InvokeFunction(a1, a3, actual, CALL_FUNCTION,
+ CheckDebugStepCallWrapper());
}
// Store offset of return address for deoptimizer.
- if (!is_api_function) {
+ if (create_implicit_receiver && !is_api_function) {
masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset());
}
// Restore context from the frame.
__ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
- // 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 (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]: constructor function
- // sp[2]: number of arguments (smi-tagged)
- __ JumpIfSmi(v0, &use_receiver);
+ // 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_SPEC_OBJECT_TYPE, it is not an object in the ECMA sense.
- __ GetObjectType(v0, a1, a3);
- __ Branch(&exit, greater_equal, a3, Operand(FIRST_SPEC_OBJECT_TYPE));
+ // 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);
- __ ld(v0, MemOperand(sp));
+ // Throw away the result of the constructor invocation and use the
+ // on-stack receiver as the result.
+ __ bind(&use_receiver);
+ __ ld(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]: constructor function
- // sp[2]: number of arguments (smi-tagged)
- __ ld(a1, MemOperand(sp, 2 * kPointerSize));
+ // 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)
+ __ ld(a1, MemOperand(sp, 1 * kPointerSize));
+ } else {
+ __ ld(a1, MemOperand(sp));
+ }
// Leave construct frame.
}
@@ -732,18 +680,62 @@
__ SmiScale(a4, a1, kPointerSizeLog2);
__ Daddu(sp, sp, a4);
__ Daddu(sp, sp, kPointerSize);
- __ IncrementCounter(isolate->counters()->constructed_objects(), 1, a1, a2);
+ if (create_implicit_receiver) {
+ __ IncrementCounter(isolate->counters()->constructed_objects(), 1, a1, a2);
+ }
__ Ret();
}
void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) {
- Generate_JSConstructStubHelper(masm, false, FLAG_pretenuring_call_new);
+ Generate_JSConstructStubHelper(masm, false, true);
}
void Builtins::Generate_JSConstructStubApi(MacroAssembler* masm) {
- Generate_JSConstructStubHelper(masm, true, false);
+ 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 r2 to become negative.
+ __ dsubu(a2, sp, a2);
+ // Check if the arguments will overflow the stack.
+ if (argc_is_tagged == kArgcIsSmiTagged) {
+ __ SmiScale(a7, v0, kPointerSizeLog2);
+ } else {
+ DCHECK(argc_is_tagged == kArgcIsUntaggedInt);
+ __ dsll(a7, argc, kPointerSizeLog2);
+ }
+ __ Branch(&okay, gt, a2, Operand(a7)); // Signed comparison.
+
+ // Out of stack space.
+ __ CallRuntime(Runtime::kThrowStackOverflow);
+
+ __ bind(&okay);
}
@@ -752,7 +744,7 @@
// Called from JSEntryStub::GenerateBody
// ----------- S t a t e -------------
- // -- a0: code entry
+ // -- a0: new.target
// -- a1: function
// -- a2: receiver_pointer
// -- a3: argc
@@ -766,12 +758,22 @@
{
FrameScope scope(masm, StackFrame::INTERNAL);
- // Set up the context from the function argument.
- __ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
+ // 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));
+ __ ld(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(a5, a0);
+
// Copy arguments to the stack in a loop.
// a3: argc
// s0: argv, i.e. points to first arg
@@ -789,6 +791,10 @@
__ bind(&entry);
__ Branch(&loop, ne, s0, Operand(a6));
+ // Setup new.target and argc.
+ __ mov(a0, a3);
+ __ mov(a3, a5);
+
// Initialize all JavaScript callee-saved registers, since they will be seen
// by the garbage collector as part of handlers.
__ LoadRoot(a4, Heap::kUndefinedValueRootIndex);
@@ -800,17 +806,11 @@
// s6 holds the root address. Do not clobber.
// s7 is cp. Do not init.
- // Invoke the code and pass argc as a0.
- __ mov(a0, a3);
- if (is_construct) {
- // No type feedback cell is available
- __ LoadRoot(a2, Heap::kUndefinedValueRootIndex);
- CallConstructStub stub(masm->isolate(), NO_CALL_CONSTRUCTOR_FLAGS);
- __ CallStub(&stub);
- } else {
- ParameterCount actual(a0);
- __ InvokeFunction(a1, actual, CALL_FUNCTION, NullCallWrapper());
- }
+ // Invoke the code.
+ Handle<Code> builtin = is_construct
+ ? masm->isolate()->builtins()->Construct()
+ : masm->isolate()->builtins()->Call();
+ __ Call(builtin, RelocInfo::CODE_TARGET);
// Leave internal frame.
}
@@ -828,34 +828,304 @@
}
+// 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);
+ __ Daddu(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.
+ __ ld(a0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+ __ ld(kInterpreterBytecodeArrayRegister,
+ FieldMemOperand(a0, SharedFunctionInfo::kFunctionDataOffset));
+
+ if (FLAG_debug_code) {
+ // Check function data field is actually a BytecodeArray object.
+ __ SmiTst(kInterpreterBytecodeArrayRegister, a4);
+ __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, a4,
+ Operand(zero_reg));
+ __ GetObjectType(kInterpreterBytecodeArrayRegister, a4, a4);
+ __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, a4,
+ Operand(BYTECODE_ARRAY_TYPE));
+ }
+
+ // Allocate the local and temporary register file on the stack.
+ {
+ // Load frame size (word) from the BytecodeArray object.
+ __ lw(a4, FieldMemOperand(kInterpreterBytecodeArrayRegister,
+ BytecodeArray::kFrameSizeOffset));
+
+ // Do a stack check to ensure we don't go over the limit.
+ Label ok;
+ __ Dsubu(a5, sp, Operand(a4));
+ __ LoadRoot(a2, Heap::kRealStackLimitRootIndex);
+ __ Branch(&ok, hs, a5, 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(a5, Heap::kUndefinedValueRootIndex);
+ __ Branch(&loop_check);
+ __ bind(&loop_header);
+ // TODO(rmcilroy): Consider doing more than one push per loop iteration.
+ __ push(a5);
+ // Continue loop if not done.
+ __ bind(&loop_check);
+ __ Dsubu(a4, a4, Operand(kPointerSize));
+ __ Branch(&loop_header, ge, a4, 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);
+ __ Daddu(kInterpreterRegisterFileRegister, fp,
+ Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp));
+ __ li(kInterpreterBytecodeOffsetRegister,
+ Operand(BytecodeArray::kHeaderSize - kHeapObjectTag));
+ __ LoadRoot(kInterpreterDispatchTableRegister,
+ Heap::kInterpreterTableRootIndex);
+ __ Daddu(kInterpreterDispatchTableRegister, kInterpreterDispatchTableRegister,
+ Operand(FixedArray::kHeaderSize - kHeapObjectTag));
+
+ // Dispatch to the first bytecode handler for the function.
+ __ Daddu(a0, kInterpreterBytecodeArrayRegister,
+ kInterpreterBytecodeOffsetRegister);
+ __ lbu(a0, MemOperand(a0));
+ __ dsll(at, a0, kPointerSizeLog2);
+ __ Daddu(at, kInterpreterDispatchTableRegister, at);
+ __ ld(at, MemOperand(at));
+ // TODO(rmcilroy): Make dispatch table point to code entrys to avoid untagging
+ // and header removal.
+ __ Daddu(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));
+ __ Daddu(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.
+ __ Daddu(a3, a0, Operand(1)); // Add one for receiver.
+ __ dsll(a3, a3, kPointerSizeLog2);
+ __ Dsubu(a3, a2, Operand(a3));
+
+ // Push the arguments.
+ Label loop_header, loop_check;
+ __ Branch(&loop_check);
+ __ bind(&loop_header);
+ __ ld(t0, MemOperand(a2));
+ __ Daddu(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.
+ __ dsll(t0, a0, kPointerSizeLog2);
+ __ Dsubu(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);
+ __ ld(t1, MemOperand(a2));
+ __ Daddu(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<int>(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.
+ __ Daddu(kInterpreterRegisterFileRegister, fp,
+ Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp));
+ __ LoadRoot(kInterpreterDispatchTableRegister,
+ Heap::kInterpreterTableRootIndex);
+ __ Daddu(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.
+ __ ld(kContextRegister,
+ MemOperand(kInterpreterRegisterFileRegister,
+ InterpreterFrameConstants::kContextFromRegisterPointer));
+
+ // Get the bytecode array pointer from the frame.
+ __ ld(a1,
+ MemOperand(kInterpreterRegisterFileRegister,
+ InterpreterFrameConstants::kFunctionFromRegisterPointer));
+ __ ld(a1, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+ __ ld(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.
+ __ ld(kInterpreterBytecodeOffsetRegister,
+ MemOperand(
+ kInterpreterRegisterFileRegister,
+ InterpreterFrameConstants::kBytecodeOffsetFromRegisterPointer));
+ __ SmiUntag(kInterpreterBytecodeOffsetRegister);
+
+ // Dispatch to the target bytecode.
+ __ Daddu(a1, kInterpreterBytecodeArrayRegister,
+ kInterpreterBytecodeOffsetRegister);
+ __ lbu(a1, MemOperand(a1));
+ __ dsll(a1, a1, kPointerSizeLog2);
+ __ Daddu(a1, kInterpreterDispatchTableRegister, a1);
+ __ ld(a1, MemOperand(a1));
+ __ Daddu(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);
}
-static void CallCompileOptimized(MacroAssembler* masm, bool concurrent) {
- FrameScope scope(masm, StackFrame::INTERNAL);
- // Push a copy of the function onto the stack.
- // Push function as parameter to the runtime call.
- __ Push(a1, a1);
- // Whether to compile in a background thread.
- __ Push(masm->isolate()->factory()->ToBoolean(concurrent));
-
- __ CallRuntime(Runtime::kCompileOptimized, 2);
- // Restore receiver.
- __ Pop(a1);
-}
-
-
void Builtins::Generate_CompileOptimized(MacroAssembler* masm) {
- CallCompileOptimized(masm, false);
+ CallRuntimePassFunction(masm, Runtime::kCompileOptimized_NotConcurrent);
GenerateTailCallToReturnedCode(masm);
}
void Builtins::Generate_CompileOptimizedConcurrent(MacroAssembler* masm) {
- CallCompileOptimized(masm, true);
+ CallRuntimePassFunction(masm, Runtime::kCompileOptimized_Concurrent);
GenerateTailCallToReturnedCode(masm);
}
@@ -875,8 +1145,9 @@
// the runtime:
// a0 - contains return address (beginning of patch sequence)
// a1 - isolate
+ // a3 - new target
RegList saved_regs =
- (a0.bit() | a1.bit() | ra.bit() | fp.bit()) & ~sp.bit();
+ (a0.bit() | a1.bit() | a3.bit() | ra.bit() | fp.bit()) & ~sp.bit();
FrameScope scope(masm, StackFrame::MANUAL);
__ MultiPush(saved_regs);
__ PrepareCallCFunction(2, 0, a2);
@@ -914,8 +1185,9 @@
// the runtime:
// a0 - contains return address (beginning of patch sequence)
// a1 - isolate
+ // a3 - new target
RegList saved_regs =
- (a0.bit() | a1.bit() | ra.bit() | fp.bit()) & ~sp.bit();
+ (a0.bit() | a1.bit() | a3.bit() | ra.bit() | fp.bit()) & ~sp.bit();
FrameScope scope(masm, StackFrame::MANUAL);
__ MultiPush(saved_regs);
__ PrepareCallCFunction(2, 0, a2);
@@ -940,6 +1212,11 @@
}
+void Builtins::Generate_MarkCodeAsToBeExecutedOnce(MacroAssembler* masm) {
+ Generate_MarkCodeAsExecutedOnce(masm);
+}
+
+
static void Generate_NotifyStubFailureHelper(MacroAssembler* masm,
SaveFPRegsMode save_doubles) {
{
@@ -950,7 +1227,7 @@
// registers.
__ MultiPush(kJSCallerSaved | kCalleeSaved);
// Pass the function and deoptimization type to the runtime system.
- __ CallRuntime(Runtime::kNotifyStubFailure, 0, save_doubles);
+ __ CallRuntime(Runtime::kNotifyStubFailure, save_doubles);
__ MultiPop(kJSCallerSaved | kCalleeSaved);
}
@@ -976,7 +1253,7 @@
// Pass the function and deoptimization type to the runtime system.
__ li(a0, Operand(Smi::FromInt(static_cast<int>(type))));
__ push(a0);
- __ CallRuntime(Runtime::kNotifyDeoptimized, 1);
+ __ CallRuntime(Runtime::kNotifyDeoptimized);
}
// Get the full codegen state from the stack and untag it -> a6.
@@ -1018,6 +1295,109 @@
}
+// Clobbers {t2, t3, a4, a5}.
+static void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver,
+ Register function_template_info,
+ Label* receiver_check_failed) {
+ Register signature = t2;
+ Register map = t3;
+ Register constructor = a4;
+ Register scratch = a5;
+
+ // If there is no signature, return the holder.
+ __ ld(signature, FieldMemOperand(function_template_info,
+ FunctionTemplateInfo::kSignatureOffset));
+ Label receiver_check_passed;
+ __ JumpIfRoot(signature, Heap::kUndefinedValueRootIndex,
+ &receiver_check_passed);
+
+ // Walk the prototype chain.
+ __ ld(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;
+ __ ld(type,
+ FieldMemOperand(constructor, JSFunction::kSharedFunctionInfoOffset));
+ __ ld(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.
+ __ ld(type,
+ FieldMemOperand(type, FunctionTemplateInfo::kParentTemplateOffset));
+ __ Branch(&function_template_loop);
+
+ // Load the next prototype.
+ __ bind(&next_prototype);
+ __ ld(receiver, FieldMemOperand(map, Map::kPrototypeOffset));
+ // End if the prototype is null or not hidden.
+ __ JumpIfRoot(receiver, Heap::kNullValueRootIndex, receiver_check_failed);
+ __ ld(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
+ __ lwu(scratch, FieldMemOperand(map, Map::kBitField3Offset));
+ __ DecodeField<Map::IsHiddenPrototype>(scratch);
+ __ Branch(receiver_check_failed, eq, scratch, Operand(zero_reg));
+ // Iterate.
+ __ 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[8 * (argc - 1)] : first argument
+ // -- sp[8 * argc] : receiver
+ // -----------------------------------
+
+ // Load the FunctionTemplateInfo.
+ __ ld(t1, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+ __ ld(t1, FieldMemOperand(t1, SharedFunctionInfo::kFunctionDataOffset));
+
+ // Do the compatible receiver check
+ Label receiver_check_failed;
+ __ sll(at, a0, kPointerSizeLog2);
+ __ Daddu(t8, sp, at);
+ __ ld(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.
+ __ ld(t2, FieldMemOperand(t1, FunctionTemplateInfo::kCallCodeOffset));
+ __ ld(t2, FieldMemOperand(t2, CallHandlerInfo::kFastHandlerOffset));
+ __ Daddu(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);
+ __ Daddu(t8, t8, Operand(kPointerSize));
+ __ daddu(sp, t8, zero_reg);
+ __ TailCallRuntime(Runtime::kThrowIllegalInvocation);
+}
+
+
void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) {
// Lookup the function in the JavaScript frame.
__ ld(a0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
@@ -1025,7 +1405,7 @@
FrameScope scope(masm, StackFrame::INTERNAL);
// Pass function as argument.
__ push(a0);
- __ CallRuntime(Runtime::kCompileForOnStackReplacement, 1);
+ __ CallRuntime(Runtime::kCompileForOnStackReplacement);
}
// If the code object is null, just return to the unoptimized code.
@@ -1058,7 +1438,7 @@
__ Branch(&ok, hs, sp, Operand(at));
{
FrameScope scope(masm, StackFrame::INTERNAL);
- __ CallRuntime(Runtime::kStackGuard, 0);
+ __ CallRuntime(Runtime::kStackGuard);
}
__ Jump(masm->isolate()->builtins()->OnStackReplacement(),
RelocInfo::CODE_TARGET);
@@ -1068,126 +1448,151 @@
}
-void Builtins::Generate_FunctionCall(MacroAssembler* masm) {
+// 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);
+ __ ld(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())));
+ __ ld(a1, MemOperand(a1));
+ __ ld(t0, FieldMemOperand(a0, JSDate::kCacheStampOffset));
+ __ Branch(&stamp_mismatch, ne, t0, Operand(a1));
+ __ Ret(USE_DELAY_SLOT);
+ __ ld(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 = a4;
+ __ LoadRoot(a2, Heap::kUndefinedValueRootIndex);
+ __ mov(a3, a2);
+ __ dsll(scratch, a0, kPointerSizeLog2);
+ __ Daddu(a0, sp, Operand(scratch));
+ __ ld(a1, MemOperand(a0)); // receiver
+ __ Dsubu(a0, a0, Operand(kPointerSize));
+ __ Branch(&no_arg, lt, a0, Operand(sp));
+ __ ld(a2, MemOperand(a0)); // thisArg
+ __ Dsubu(a0, a0, Operand(kPointerSize));
+ __ Branch(&no_arg, lt, a0, Operand(sp));
+ __ ld(a3, MemOperand(a0)); // argArray
+ __ bind(&no_arg);
+ __ Daddu(sp, sp, Operand(scratch));
+ __ sd(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);
+ __ ld(a4, FieldMemOperand(a1, HeapObject::kMapOffset));
+ __ lbu(a4, FieldMemOperand(a4, Map::kBitFieldOffset));
+ __ And(a4, a4, Operand(1 << Map::kIsCallable));
+ __ Branch(&receiver_not_callable, eq, a4, 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);
+ {
+ __ sd(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;
+ {
+ Label done;
__ Branch(&done, ne, a0, Operand(zero_reg));
- __ LoadRoot(a6, Heap::kUndefinedValueRootIndex);
- __ push(a6);
+ __ PushRoot(Heap::kUndefinedValueRootIndex);
__ Daddu(a0, a0, Operand(1));
__ bind(&done);
}
- // 2. Get the function to call (passed as receiver) from the stack, check
- // if it is a function.
+ // 2. Get the function to call (passed as receiver) from the stack.
// a0: actual number of arguments
- Label slow, non_function;
__ dsll(at, a0, kPointerSizeLog2);
__ daddu(at, sp, at);
__ ld(a1, MemOperand(at));
- __ JumpIfSmi(a1, &non_function);
- __ GetObjectType(a1, a2, a2);
- __ Branch(&slow, ne, a2, Operand(JS_FUNCTION_TYPE));
- // 3a. Patch the first argument if necessary when calling a function.
- // a0: actual number of arguments
- // a1: function
- Label shift_arguments;
- __ li(a4, Operand(0, RelocInfo::NONE32)); // Indicate regular JS_FUNCTION.
- { Label convert_to_object, use_global_proxy, patch_receiver;
- // Change context eagerly in case we need the global receiver.
- __ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
-
- // Do not transform the receiver for strict mode functions.
- __ ld(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
- __ lbu(a3, FieldMemOperand(a2, SharedFunctionInfo::kStrictModeByteOffset));
- __ And(a7, a3, Operand(1 << SharedFunctionInfo::kStrictModeBitWithinByte));
- __ Branch(&shift_arguments, ne, a7, Operand(zero_reg));
-
- // Do not transform the receiver for native (Compilerhints already in a3).
- __ lbu(a3, FieldMemOperand(a2, SharedFunctionInfo::kNativeByteOffset));
- __ And(a7, a3, Operand(1 << SharedFunctionInfo::kNativeBitWithinByte));
- __ Branch(&shift_arguments, ne, a7, Operand(zero_reg));
-
- // Compute the receiver in sloppy mode.
- // Load first argument in a2. a2 = -kPointerSize(sp + n_args << 2).
- __ dsll(at, a0, kPointerSizeLog2);
- __ daddu(a2, sp, at);
- __ ld(a2, MemOperand(a2, -kPointerSize));
- // a0: actual number of arguments
- // a1: function
- // a2: first argument
- __ JumpIfSmi(a2, &convert_to_object, a6);
-
- __ LoadRoot(a3, Heap::kUndefinedValueRootIndex);
- __ Branch(&use_global_proxy, eq, a2, Operand(a3));
- __ LoadRoot(a3, Heap::kNullValueRootIndex);
- __ Branch(&use_global_proxy, eq, a2, Operand(a3));
-
- STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE);
- __ GetObjectType(a2, a3, a3);
- __ Branch(&shift_arguments, ge, a3, Operand(FIRST_SPEC_OBJECT_TYPE));
-
- __ bind(&convert_to_object);
- // Enter an internal frame in order to preserve argument count.
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ SmiTag(a0);
- __ Push(a0, a2);
- __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
- __ mov(a2, v0);
-
- __ pop(a0);
- __ SmiUntag(a0);
- // Leave internal frame.
- }
- // Restore the function to a1, and the flag to a4.
- __ dsll(at, a0, kPointerSizeLog2);
- __ daddu(at, sp, at);
- __ ld(a1, MemOperand(at));
- __ Branch(USE_DELAY_SLOT, &patch_receiver);
- __ li(a4, Operand(0, RelocInfo::NONE32));
-
- __ bind(&use_global_proxy);
- __ ld(a2, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX));
- __ ld(a2, FieldMemOperand(a2, GlobalObject::kGlobalProxyOffset));
-
- __ bind(&patch_receiver);
- __ dsll(at, a0, kPointerSizeLog2);
- __ daddu(a3, sp, at);
- __ sd(a2, MemOperand(a3, -kPointerSize));
-
- __ Branch(&shift_arguments);
- }
-
- // 3b. Check for function proxy.
- __ bind(&slow);
- __ li(a4, Operand(1, RelocInfo::NONE32)); // Indicate function proxy.
- __ Branch(&shift_arguments, eq, a2, Operand(JS_FUNCTION_PROXY_TYPE));
-
- __ bind(&non_function);
- __ li(a4, Operand(2, RelocInfo::NONE32)); // Indicate non-function.
-
- // 3c. Patch the first argument when calling a non-function. The
- // CALL_NON_FUNCTION builtin expects the non-function callee as
- // receiver, so overwrite the first argument which will ultimately
- // become the receiver.
- // a0: actual number of arguments
- // a1: function
- // a4: call type (0: JS function, 1: function proxy, 2: non-function)
- __ dsll(at, a0, kPointerSizeLog2);
- __ daddu(a2, sp, at);
- __ sd(a1, MemOperand(a2, -kPointerSize));
-
- // 4. Shift arguments and return address one slot down on the stack
+ // 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
- // a4: call type (0: JS function, 1: function proxy, 2: non-function)
- __ bind(&shift_arguments);
- { Label loop;
+ {
+ Label loop;
// Calculate the copy start address (destination). Copy end address is sp.
__ dsll(at, a0, kPointerSizeLog2);
__ daddu(a2, sp, at);
@@ -1203,201 +1608,150 @@
__ Pop();
}
- // 5a. Call non-function via tail call to CALL_NON_FUNCTION builtin,
- // or a function proxy via CALL_FUNCTION_PROXY.
- // a0: actual number of arguments
- // a1: function
- // a4: call type (0: JS function, 1: function proxy, 2: non-function)
- { Label function, non_proxy;
- __ Branch(&function, eq, a4, Operand(zero_reg));
- // Expected number of arguments is 0 for CALL_NON_FUNCTION.
- __ mov(a2, zero_reg);
- __ Branch(&non_proxy, ne, a4, Operand(1));
-
- __ push(a1); // Re-add proxy object as additional argument.
- __ Daddu(a0, a0, Operand(1));
- __ GetBuiltinFunction(a1, Builtins::CALL_FUNCTION_PROXY);
- __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(),
- RelocInfo::CODE_TARGET);
-
- __ bind(&non_proxy);
- __ GetBuiltinFunction(a1, Builtins::CALL_NON_FUNCTION);
- __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(),
- RelocInfo::CODE_TARGET);
- __ bind(&function);
- }
-
- // 5b. Get the code to call from the function and check that the number of
- // expected arguments matches what we're providing. If so, jump
- // (tail-call) to the code in register edx without checking arguments.
- // a0: actual number of arguments
- // a1: function
- __ ld(a3, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
- // The argument count is stored as int32_t on 64-bit platforms.
- // TODO(plind): Smi on 32-bit platforms.
- __ lw(a2,
- FieldMemOperand(a3, SharedFunctionInfo::kFormalParameterCountOffset));
- // Check formal and actual parameter counts.
- __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(),
- RelocInfo::CODE_TARGET, ne, a2, Operand(a0));
-
- __ ld(a3, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
- ParameterCount expected(0);
- __ InvokeCode(a3, expected, expected, JUMP_FUNCTION, NullCallWrapper());
+ // 4. Call the callable.
+ __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
}
-void Builtins::Generate_FunctionApply(MacroAssembler* masm) {
- const int kIndexOffset =
- StandardFrameConstants::kExpressionsOffset - (2 * kPointerSize);
- const int kLimitOffset =
- StandardFrameConstants::kExpressionsOffset - (1 * kPointerSize);
- const int kArgsOffset = 2 * kPointerSize;
- const int kRecvOffset = 3 * kPointerSize;
- const int kFunctionOffset = 4 * kPointerSize;
+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.
{
- FrameScope frame_scope(masm, StackFrame::INTERNAL);
- __ ld(a0, MemOperand(fp, kFunctionOffset)); // Get the function.
- __ push(a0);
- __ ld(a0, MemOperand(fp, kArgsOffset)); // Get the args array.
- __ push(a0);
- // Returns (in v0) number of arguments to copy to stack as Smi.
- __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_FUNCTION);
-
- // 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.
- __ dsubu(a2, sp, a2);
- // Check if the arguments will overflow the stack.
- __ SmiScale(a7, v0, kPointerSizeLog2);
- __ Branch(&okay, gt, a2, Operand(a7)); // Signed comparison.
-
- // Out of stack space.
- __ ld(a1, MemOperand(fp, kFunctionOffset));
- __ Push(a1, v0);
- __ InvokeBuiltin(Builtins::STACK_OVERFLOW, CALL_FUNCTION);
- // End of stack check.
-
- // Push current limit and index.
- __ bind(&okay);
- __ mov(a1, zero_reg);
- __ Push(v0, a1); // Limit and initial index.
-
- // Get the receiver.
- __ ld(a0, MemOperand(fp, kRecvOffset));
-
- // Check that the function is a JS function (otherwise it must be a proxy).
- Label push_receiver;
- __ ld(a1, MemOperand(fp, kFunctionOffset));
- __ GetObjectType(a1, a2, a2);
- __ Branch(&push_receiver, ne, a2, Operand(JS_FUNCTION_TYPE));
-
- // Change context eagerly to get the right global object if necessary.
- __ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
- // Load the shared function info while the function is still in a1.
- __ ld(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
-
- // Compute the receiver.
- // Do not transform the receiver for strict mode functions.
- Label call_to_object, use_global_proxy;
- __ lbu(a7, FieldMemOperand(a2, SharedFunctionInfo::kStrictModeByteOffset));
- __ And(a7, a7, Operand(1 << SharedFunctionInfo::kStrictModeBitWithinByte));
- __ Branch(&push_receiver, ne, a7, Operand(zero_reg));
-
- // Do not transform the receiver for native (Compilerhints already in a2).
- __ lbu(a7, FieldMemOperand(a2, SharedFunctionInfo::kNativeByteOffset));
- __ And(a7, a7, Operand(1 << SharedFunctionInfo::kNativeBitWithinByte));
- __ Branch(&push_receiver, ne, a7, Operand(zero_reg));
-
- // Compute the receiver in sloppy mode.
- __ JumpIfSmi(a0, &call_to_object);
- __ LoadRoot(a1, Heap::kNullValueRootIndex);
- __ Branch(&use_global_proxy, eq, a0, Operand(a1));
- __ LoadRoot(a2, Heap::kUndefinedValueRootIndex);
- __ Branch(&use_global_proxy, eq, a0, Operand(a2));
-
- // Check if the receiver is already a JavaScript object.
- // a0: receiver
- STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE);
- __ GetObjectType(a0, a1, a1);
- __ Branch(&push_receiver, ge, a1, Operand(FIRST_SPEC_OBJECT_TYPE));
-
- // Convert the receiver to a regular object.
- // a0: receiver
- __ bind(&call_to_object);
- __ push(a0);
- __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
- __ mov(a0, v0); // Put object in a0 to match other paths to push_receiver.
- __ Branch(&push_receiver);
-
- __ bind(&use_global_proxy);
- __ ld(a0, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX));
- __ ld(a0, FieldMemOperand(a0, GlobalObject::kGlobalProxyOffset));
-
- // Push the receiver.
- // a0: receiver
- __ bind(&push_receiver);
- __ push(a0);
-
- // Copy all arguments from the array to the stack.
- Label entry, loop;
- __ ld(a0, MemOperand(fp, kIndexOffset));
- __ Branch(&entry);
-
- // Load the current argument from the arguments array and push it to the
- // stack.
- // a0: current argument index
- __ bind(&loop);
- __ ld(a1, MemOperand(fp, kArgsOffset));
- __ Push(a1, a0);
-
- // Call the runtime to access the property in the arguments array.
- __ CallRuntime(Runtime::kGetProperty, 2);
- __ push(v0);
-
- // Use inline caching to access the arguments.
- __ ld(a0, MemOperand(fp, kIndexOffset));
- __ Daddu(a0, a0, Operand(Smi::FromInt(1)));
- __ sd(a0, MemOperand(fp, kIndexOffset));
-
- // Test if the copy loop has finished copying all the elements from the
- // arguments object.
- __ bind(&entry);
- __ ld(a1, MemOperand(fp, kLimitOffset));
- __ Branch(&loop, ne, a0, Operand(a1));
-
- // Call the function.
- Label call_proxy;
- ParameterCount actual(a0);
- __ SmiUntag(a0);
- __ ld(a1, MemOperand(fp, kFunctionOffset));
- __ GetObjectType(a1, a2, a2);
- __ Branch(&call_proxy, ne, a2, Operand(JS_FUNCTION_TYPE));
-
- __ InvokeFunction(a1, actual, CALL_FUNCTION, NullCallWrapper());
-
- frame_scope.GenerateLeaveFrame();
- __ Ret(USE_DELAY_SLOT);
- __ Daddu(sp, sp, Operand(3 * kPointerSize)); // In delay slot.
-
- // Call the function proxy.
- __ bind(&call_proxy);
- __ push(a1); // Add function proxy as last argument.
- __ Daddu(a0, a0, Operand(1));
- __ li(a2, Operand(0, RelocInfo::NONE32));
- __ GetBuiltinFunction(a1, Builtins::CALL_FUNCTION_PROXY);
- __ Call(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(),
- RelocInfo::CODE_TARGET);
- // Tear down the internal frame and remove function, receiver and args.
+ Label no_arg;
+ Register scratch = a4;
+ __ LoadRoot(a1, Heap::kUndefinedValueRootIndex);
+ __ mov(a2, a1);
+ __ mov(a3, a1);
+ __ dsll(scratch, a0, kPointerSizeLog2);
+ __ mov(a0, scratch);
+ __ Dsubu(a0, a0, Operand(kPointerSize));
+ __ Branch(&no_arg, lt, a0, Operand(zero_reg));
+ __ Daddu(a0, sp, Operand(a0));
+ __ ld(a1, MemOperand(a0)); // target
+ __ Dsubu(a0, a0, Operand(kPointerSize));
+ __ Branch(&no_arg, lt, a0, Operand(sp));
+ __ ld(a2, MemOperand(a0)); // thisArgument
+ __ Dsubu(a0, a0, Operand(kPointerSize));
+ __ Branch(&no_arg, lt, a0, Operand(sp));
+ __ ld(a3, MemOperand(a0)); // argumentsList
+ __ bind(&no_arg);
+ __ Daddu(sp, sp, Operand(scratch));
+ __ sd(a2, MemOperand(sp));
+ __ mov(a0, a3);
}
- __ Ret(USE_DELAY_SLOT);
- __ Daddu(sp, sp, Operand(3 * kPointerSize)); // In delay slot.
+ // ----------- 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);
+ __ ld(a4, FieldMemOperand(a1, HeapObject::kMapOffset));
+ __ lbu(a4, FieldMemOperand(a4, Map::kBitFieldOffset));
+ __ And(a4, a4, Operand(1 << Map::kIsCallable));
+ __ Branch(&target_not_callable, eq, a4, 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);
+ {
+ __ sd(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 = a4;
+ __ LoadRoot(a1, Heap::kUndefinedValueRootIndex);
+ __ mov(a2, a1);
+ __ dsll(scratch, a0, kPointerSizeLog2);
+ __ Daddu(a0, sp, Operand(scratch));
+ __ sd(a2, MemOperand(a0)); // receiver
+ __ Dsubu(a0, a0, Operand(kPointerSize));
+ __ Branch(&no_arg, lt, a0, Operand(sp));
+ __ ld(a1, MemOperand(a0)); // target
+ __ mov(a3, a1); // new.target defaults to target
+ __ Dsubu(a0, a0, Operand(kPointerSize));
+ __ Branch(&no_arg, lt, a0, Operand(sp));
+ __ ld(a2, MemOperand(a0)); // argumentsList
+ __ Dsubu(a0, a0, Operand(kPointerSize));
+ __ Branch(&no_arg, lt, a0, Operand(sp));
+ __ ld(a3, MemOperand(a0)); // new.target
+ __ bind(&no_arg);
+ __ Daddu(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);
+ __ ld(a4, FieldMemOperand(a1, HeapObject::kMapOffset));
+ __ lbu(a4, FieldMemOperand(a4, Map::kBitFieldOffset));
+ __ And(a4, a4, Operand(1 << Map::kIsConstructor));
+ __ Branch(&target_not_constructor, eq, a4, Operand(zero_reg));
+
+ // 3. Make sure the target is actually a constructor.
+ Label new_target_not_constructor;
+ __ JumpIfSmi(a3, &new_target_not_constructor);
+ __ ld(a4, FieldMemOperand(a3, HeapObject::kMapOffset));
+ __ lbu(a4, FieldMemOperand(a4, Map::kBitFieldOffset));
+ __ And(a4, a4, Operand(1 << Map::kIsConstructor));
+ __ Branch(&new_target_not_constructor, eq, a4, 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);
+ {
+ __ sd(a1, MemOperand(sp));
+ __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
+ }
+
+ // 4c. The new.target is not a constructor, throw an appropriate TypeError.
+ __ bind(&new_target_not_constructor);
+ {
+ __ sd(a3, MemOperand(sp));
+ __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
+ }
}
@@ -1407,6 +1761,7 @@
// -- 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
@@ -1449,20 +1804,588 @@
}
+// 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.
+ __ ld(a2, FieldMemOperand(a0, HeapObject::kMapOffset));
+
+ // Load native context into a4.
+ __ ld(a4, NativeContextMemOperand());
+
+ // Check if argumentsList is an (unmodified) arguments object.
+ __ ld(at, ContextMemOperand(a4, Context::SLOPPY_ARGUMENTS_MAP_INDEX));
+ __ Branch(&create_arguments, eq, a2, Operand(at));
+ __ ld(at, ContextMemOperand(a4, Context::STRICT_ARGUMENTS_MAP_INDEX));
+ __ Branch(&create_arguments, eq, a2, Operand(at));
+
+ // Check if argumentsList is a fast JSArray.
+ __ ld(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);
+ __ ld(a2, FieldMemOperand(v0, FixedArray::kLengthOffset));
+ __ SmiUntag(a2);
+ }
+ __ Branch(&done_create);
+
+ // Try to create the list from an arguments object.
+ __ bind(&create_arguments);
+ __ ld(a2,
+ FieldMemOperand(a0, JSObject::kHeaderSize +
+ Heap::kArgumentsLengthIndex * kPointerSize));
+ __ ld(a4, FieldMemOperand(a0, JSObject::kElementsOffset));
+ __ ld(at, FieldMemOperand(a4, FixedArray::kLengthOffset));
+ __ Branch(&create_runtime, ne, a2, Operand(at));
+ __ SmiUntag(a2);
+ __ mov(a0, a4);
+ __ Branch(&done_create);
+
+ // Try to create the list from a JSArray object.
+ __ bind(&create_array);
+ __ ld(a2, FieldMemOperand(a2, Map::kBitField2Offset));
+ __ DecodeField<Map::ElementsKindBits>(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));
+ __ ld(a2, FieldMemOperand(a0, JSArray::kLengthOffset));
+ __ ld(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(a4, Heap::kRealStackLimitRootIndex);
+ // Make ip the space we have left. The stack might already be overflowed
+ // here which will cause ip to become negative.
+ __ Dsubu(a4, sp, a4);
+ // Check if the arguments will overflow the stack.
+ __ dsll(at, a2, kPointerSizeLog2);
+ __ Branch(&done, gt, a4, 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(a4, zero_reg);
+ Label done, loop;
+ __ bind(&loop);
+ __ Branch(&done, eq, a4, Operand(a2));
+ __ dsll(at, a4, kPointerSizeLog2);
+ __ Daddu(at, a0, at);
+ __ ld(at, FieldMemOperand(at, FixedArray::kHeaderSize));
+ __ Push(at);
+ __ Daddu(a4, a4, Operand(1));
+ __ Branch(&loop);
+ __ bind(&done);
+ __ Move(a0, a4);
+ }
+
+ // 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 function is not a "classConstructor".
+ Label class_constructor;
+ __ ld(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);
+ __ ld(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;
+ __ dsll(at, a0, kPointerSizeLog2);
+ __ daddu(at, sp, at);
+ __ ld(a3, MemOperand(at));
+ __ JumpIfSmi(a3, &convert_to_object);
+ STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE);
+ __ GetObjectType(a3, a4, a4);
+ __ Branch(&done_convert, hs, a4, 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);
+ __ SmiTag(a0);
+ __ Push(a0, a1);
+ __ mov(a0, a3);
+ ToObjectStub stub(masm->isolate());
+ __ CallStub(&stub);
+ __ mov(a3, v0);
+ __ Pop(a0, a1);
+ __ SmiUntag(a0);
+ }
+ __ ld(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+ __ bind(&convert_receiver);
+ }
+ __ dsll(at, a0, kPointerSizeLog2);
+ __ daddu(at, sp, at);
+ __ sd(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));
+ 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]].
+ {
+ __ ld(at, FieldMemOperand(a1, JSBoundFunction::kBoundThisOffset));
+ __ dsll(a4, a0, kPointerSizeLog2);
+ __ daddu(a4, a4, sp);
+ __ sd(at, MemOperand(a4));
+ }
+
+ // Load [[BoundArguments]] into a2 and length of that into a4.
+ __ ld(a2, FieldMemOperand(a1, JSBoundFunction::kBoundArgumentsOffset));
+ __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset));
+ __ SmiUntag(a4);
+
+ // ----------- 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)
+ // -- a4 : the number of [[BoundArguments]]
+ // -----------------------------------
+
+ // Reserve stack space for the [[BoundArguments]].
+ {
+ Label done;
+ __ dsll(a5, a4, kPointerSizeLog2);
+ __ Dsubu(sp, sp, Operand(a5));
+ // 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.
+ __ Daddu(sp, sp, Operand(a5));
+ {
+ FrameScope scope(masm, StackFrame::MANUAL);
+ __ EnterFrame(StackFrame::INTERNAL);
+ __ CallRuntime(Runtime::kThrowStackOverflow);
+ }
+ __ bind(&done);
+ }
+
+ // Relocate arguments down the stack.
+ {
+ Label loop, done_loop;
+ __ mov(a5, zero_reg);
+ __ bind(&loop);
+ __ Branch(&done_loop, gt, a5, Operand(a0));
+ __ dsll(a6, a4, kPointerSizeLog2);
+ __ daddu(a6, a6, sp);
+ __ ld(at, MemOperand(a6));
+ __ dsll(a6, a5, kPointerSizeLog2);
+ __ daddu(a6, a6, sp);
+ __ sd(at, MemOperand(a6));
+ __ Daddu(a4, a4, Operand(1));
+ __ Daddu(a5, a5, Operand(1));
+ __ Branch(&loop);
+ __ bind(&done_loop);
+ }
+
+ // Copy [[BoundArguments]] to the stack (below the arguments).
+ {
+ Label loop, done_loop;
+ __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset));
+ __ SmiUntag(a4);
+ __ Daddu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
+ __ bind(&loop);
+ __ Dsubu(a4, a4, Operand(1));
+ __ Branch(&done_loop, lt, a4, Operand(zero_reg));
+ __ dsll(a5, a4, kPointerSizeLog2);
+ __ daddu(a5, a5, a2);
+ __ ld(at, MemOperand(a5));
+ __ dsll(a5, a0, kPointerSizeLog2);
+ __ daddu(a5, a5, sp);
+ __ sd(at, MemOperand(a5));
+ __ Daddu(a0, a0, Operand(1));
+ __ Branch(&loop);
+ __ bind(&done_loop);
+ }
+
+ // Call the [[BoundTargetFunction]] via the Call builtin.
+ __ ld(a1, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset));
+ __ li(at, Operand(ExternalReference(Builtins::kCall_ReceiverIsAny,
+ masm->isolate())));
+ __ ld(at, MemOperand(at));
+ __ Daddu(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.
+ __ Daddu(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.
+ __ dsll(at, a0, kPointerSizeLog2);
+ __ daddu(at, sp, at);
+ __ sd(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);
+ }
+}
+
+
+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).
+ __ ld(a4, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+ __ ld(a4, FieldMemOperand(a4, SharedFunctionInfo::kConstructStubOffset));
+ __ Daddu(at, a4, 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 a4.
+ __ ld(a2, FieldMemOperand(a1, JSBoundFunction::kBoundArgumentsOffset));
+ __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset));
+ __ SmiUntag(a4);
+
+ // ----------- 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)
+ // -- a4 : the number of [[BoundArguments]]
+ // -----------------------------------
+
+ // Reserve stack space for the [[BoundArguments]].
+ {
+ Label done;
+ __ dsll(a5, a4, kPointerSizeLog2);
+ __ Dsubu(sp, sp, Operand(a5));
+ // 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.
+ __ Daddu(sp, sp, Operand(a5));
+ {
+ FrameScope scope(masm, StackFrame::MANUAL);
+ __ EnterFrame(StackFrame::INTERNAL);
+ __ CallRuntime(Runtime::kThrowStackOverflow);
+ }
+ __ bind(&done);
+ }
+
+ // Relocate arguments down the stack.
+ {
+ Label loop, done_loop;
+ __ mov(a5, zero_reg);
+ __ bind(&loop);
+ __ Branch(&done_loop, ge, a5, Operand(a0));
+ __ dsll(a6, a4, kPointerSizeLog2);
+ __ daddu(a6, a6, sp);
+ __ ld(at, MemOperand(a6));
+ __ dsll(a6, a5, kPointerSizeLog2);
+ __ daddu(a6, a6, sp);
+ __ sd(at, MemOperand(a6));
+ __ Daddu(a4, a4, Operand(1));
+ __ Daddu(a5, a5, Operand(1));
+ __ Branch(&loop);
+ __ bind(&done_loop);
+ }
+
+ // Copy [[BoundArguments]] to the stack (below the arguments).
+ {
+ Label loop, done_loop;
+ __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset));
+ __ SmiUntag(a4);
+ __ Daddu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
+ __ bind(&loop);
+ __ Dsubu(a4, a4, Operand(1));
+ __ Branch(&done_loop, lt, a4, Operand(zero_reg));
+ __ dsll(a5, a4, kPointerSizeLog2);
+ __ daddu(a5, a5, a2);
+ __ ld(at, MemOperand(a5));
+ __ dsll(a5, a0, kPointerSizeLog2);
+ __ daddu(a5, a5, sp);
+ __ sd(at, MemOperand(a5));
+ __ Daddu(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));
+ __ ld(a3, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset));
+ __ bind(&skip_load);
+ }
+
+ // Construct the [[BoundTargetFunction]] via the Construct builtin.
+ __ ld(a1, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset));
+ __ li(at, Operand(ExternalReference(Builtins::kConstruct, masm->isolate())));
+ __ ld(at, MemOperand(at));
+ __ Daddu(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.
+ __ Daddu(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.
+ __ ld(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.
+ __ dsll(at, a0, kPointerSizeLog2);
+ __ daddu(at, sp, at);
+ __ sd(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 stack_overflow;
- ArgumentAdaptorStackCheck(masm, &stack_overflow);
- Label invoke, dont_adapt_arguments;
+ Label invoke, dont_adapt_arguments, stack_overflow;
Label enough, too_few;
- __ ld(a3, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
__ Branch(&dont_adapt_arguments, eq,
a2, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel));
// We use Uless as the number of argument should always be greater than 0.
@@ -1472,30 +2395,32 @@
// a0: actual number of arguments as a smi
// a1: function
// a2: expected number of arguments
- // a3: code entry to call
+ // 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 a2.
+ // Calculate copy start address into a0 and copy end address into a4.
__ SmiScale(a0, a0, kPointerSizeLog2);
__ Daddu(a0, fp, a0);
// Adjust for return address and receiver.
__ Daddu(a0, a0, Operand(2 * kPointerSize));
// Compute copy end address.
- __ dsll(a2, a2, kPointerSizeLog2);
- __ dsubu(a2, a0, a2);
+ __ dsll(a4, a2, kPointerSizeLog2);
+ __ dsubu(a4, a0, a4);
// Copy the arguments (including the receiver) to the new stack frame.
// a0: copy start address
// a1: function
- // a2: copy end address
- // a3: code entry to call
+ // a2: expected number of arguments
+ // a3: new target (passed through to callee)
+ // a4: copy end address
Label copy;
__ bind(©);
- __ ld(a4, MemOperand(a0));
- __ push(a4);
- __ Branch(USE_DELAY_SLOT, ©, ne, a0, Operand(a2));
+ __ ld(a5, MemOperand(a0));
+ __ push(a5);
+ __ Branch(USE_DELAY_SLOT, ©, ne, a0, Operand(a4));
__ daddiu(a0, a0, -kPointerSize); // In delay slot.
__ jmp(&invoke);
@@ -1503,13 +2428,35 @@
{ // Too few parameters: Actual < expected.
__ bind(&too_few);
- EnterArgumentsAdaptorFrame(masm);
- // Calculate copy start address into a0 and copy end address is fp.
+ // If the function is strong we need to throw an error.
+ Label no_strong_error;
+ __ ld(a4, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+ __ lbu(a5, FieldMemOperand(a4, SharedFunctionInfo::kStrongModeByteOffset));
+ __ And(a5, a5, Operand(1 << SharedFunctionInfo::kStrongModeBitWithinByte));
+ __ Branch(&no_strong_error, eq, a5, Operand(zero_reg));
+
+ // What we really care about is the required number of arguments.
+ DCHECK_EQ(kPointerSize, kInt64Size);
+ __ lw(a5, FieldMemOperand(a4, SharedFunctionInfo::kLengthOffset));
+ __ srl(a5, a5, 1);
+ __ Branch(&no_strong_error, ge, a0, Operand(a5));
+
+ {
+ 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 a7.
// a0: actual number of arguments as a smi
// a1: function
// a2: expected number of arguments
- // a3: code entry to call
+ // a3: new target (passed through to callee)
__ SmiScale(a0, a0, kPointerSizeLog2);
__ Daddu(a0, fp, a0);
// Adjust for return address and receiver.
@@ -1521,7 +2468,7 @@
// a0: copy start address
// a1: function
// a2: expected number of arguments
- // a3: code entry to call
+ // a3: new target (passed through to callee)
// a7: copy end address
Label copy;
__ bind(©);
@@ -1534,25 +2481,29 @@
// Fill the remaining expected arguments with undefined.
// a1: function
// a2: expected number of arguments
- // a3: code entry to call
- __ LoadRoot(a4, Heap::kUndefinedValueRootIndex);
+ // a3: new target (passed through to callee)
+ __ LoadRoot(a5, Heap::kUndefinedValueRootIndex);
__ dsll(a6, a2, kPointerSizeLog2);
- __ Dsubu(a2, fp, Operand(a6));
+ __ Dsubu(a4, fp, Operand(a6));
// Adjust for frame.
- __ Dsubu(a2, a2, Operand(StandardFrameConstants::kFixedFrameSizeFromFp +
- 2 * kPointerSize));
+ __ Dsubu(a4, a4, Operand(StandardFrameConstants::kFixedFrameSizeFromFp +
+ 2 * kPointerSize));
Label fill;
__ bind(&fill);
__ Dsubu(sp, sp, kPointerSize);
- __ Branch(USE_DELAY_SLOT, &fill, ne, sp, Operand(a2));
- __ sd(a4, MemOperand(sp));
+ __ Branch(USE_DELAY_SLOT, &fill, ne, sp, Operand(a4));
+ __ sd(a5, MemOperand(sp));
}
// Call the entry point.
__ bind(&invoke);
-
- __ Call(a3);
+ __ mov(a0, a2);
+ // a0 : expected number of arguments
+ // a1 : function (passed through to callee)
+ // a3: new target (passed through to callee)
+ __ ld(a4, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
+ __ Call(a4);
// Store offset of return address for deoptimizer.
masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset());
@@ -1566,13 +2517,13 @@
// Don't adapt arguments.
// -------------------------------------------
__ bind(&dont_adapt_arguments);
- __ Jump(a3);
+ __ ld(a4, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
+ __ Jump(a4);
__ bind(&stack_overflow);
{
FrameScope frame(masm, StackFrame::MANUAL);
- EnterArgumentsAdaptorFrame(masm);
- __ InvokeBuiltin(Builtins::STACK_OVERFLOW, CALL_FUNCTION);
+ __ CallRuntime(Runtime::kThrowStackOverflow);
__ break_(0xCC);
}
}
@@ -1580,6 +2531,7 @@
#undef __
-} } // namespace v8::internal
+} // namespace internal
+} // namespace v8
#endif // V8_TARGET_ARCH_MIPS64