| Index: src/x64/builtins-x64.cc
|
| diff --git a/src/x64/builtins-x64.cc b/src/x64/builtins-x64.cc
|
| deleted file mode 100644
|
| index bdf00451acb85afb16a610b90f9d97e4b3f6d426..0000000000000000000000000000000000000000
|
| --- a/src/x64/builtins-x64.cc
|
| +++ /dev/null
|
| @@ -1,3138 +0,0 @@
|
| -// Copyright 2012 the V8 project authors. All rights reserved.
|
| -// Use of this source code is governed by a BSD-style license that can be
|
| -// found in the LICENSE file.
|
| -
|
| -#if V8_TARGET_ARCH_X64
|
| -
|
| -#include "src/code-factory.h"
|
| -#include "src/codegen.h"
|
| -#include "src/deoptimizer.h"
|
| -#include "src/full-codegen/full-codegen.h"
|
| -
|
| -namespace v8 {
|
| -namespace internal {
|
| -
|
| -
|
| -#define __ ACCESS_MASM(masm)
|
| -
|
| -void Builtins::Generate_Adaptor(MacroAssembler* masm, CFunctionId id,
|
| - ExitFrameType exit_frame_type) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : number of arguments excluding receiver
|
| - // -- rdi : target
|
| - // -- rdx : new.target
|
| - // -- rsp[0] : return address
|
| - // -- rsp[8] : last argument
|
| - // -- ...
|
| - // -- rsp[8 * argc] : first argument
|
| - // -- rsp[8 * (argc + 1)] : receiver
|
| - // -----------------------------------
|
| - __ AssertFunction(rdi);
|
| -
|
| - // 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).
|
| - __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
|
| -
|
| - // JumpToExternalReference expects rax to contain the number of arguments
|
| - // including the receiver and the extra arguments.
|
| - const int num_extra_args = 3;
|
| - __ addp(rax, Immediate(num_extra_args + 1));
|
| -
|
| - // Unconditionally insert argc, target and new target as extra arguments. They
|
| - // will be used by stack frame iterators when constructing the stack trace.
|
| - __ PopReturnAddressTo(kScratchRegister);
|
| - __ Integer32ToSmi(rax, rax);
|
| - __ Push(rax);
|
| - __ SmiToInteger32(rax, rax);
|
| - __ Push(rdi);
|
| - __ Push(rdx);
|
| - __ PushReturnAddressFrom(kScratchRegister);
|
| -
|
| - __ JumpToExternalReference(ExternalReference(id, masm->isolate()),
|
| - exit_frame_type == BUILTIN_EXIT);
|
| -}
|
| -
|
| -
|
| -static void GenerateTailCallToSharedCode(MacroAssembler* masm) {
|
| - __ movp(kScratchRegister,
|
| - FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
|
| - __ movp(kScratchRegister,
|
| - FieldOperand(kScratchRegister, SharedFunctionInfo::kCodeOffset));
|
| - __ leap(kScratchRegister, FieldOperand(kScratchRegister, Code::kHeaderSize));
|
| - __ jmp(kScratchRegister);
|
| -}
|
| -
|
| -static void GenerateTailCallToReturnedCode(MacroAssembler* masm,
|
| - Runtime::FunctionId function_id) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argument count (preserved for callee)
|
| - // -- rdx : new target (preserved for callee)
|
| - // -- rdi : target function (preserved for callee)
|
| - // -----------------------------------
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - // Push the number of arguments to the callee.
|
| - __ Integer32ToSmi(rax, rax);
|
| - __ Push(rax);
|
| - // Push a copy of the target function and the new target.
|
| - __ Push(rdi);
|
| - __ Push(rdx);
|
| - // Function is also the parameter to the runtime call.
|
| - __ Push(rdi);
|
| -
|
| - __ CallRuntime(function_id, 1);
|
| - __ movp(rbx, rax);
|
| -
|
| - // Restore target function and new target.
|
| - __ Pop(rdx);
|
| - __ Pop(rdi);
|
| - __ Pop(rax);
|
| - __ SmiToInteger32(rax, rax);
|
| - }
|
| - __ leap(rbx, FieldOperand(rbx, Code::kHeaderSize));
|
| - __ jmp(rbx);
|
| -}
|
| -
|
| -void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) {
|
| - // Checking whether the queued function is ready for install is optional,
|
| - // since we come across interrupts and stack checks elsewhere. However,
|
| - // not checking may delay installing ready functions, and always checking
|
| - // would be quite expensive. A good compromise is to first check against
|
| - // stack limit as a cue for an interrupt signal.
|
| - Label ok;
|
| - __ CompareRoot(rsp, Heap::kStackLimitRootIndex);
|
| - __ j(above_equal, &ok);
|
| -
|
| - GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
|
| -
|
| - __ bind(&ok);
|
| - GenerateTailCallToSharedCode(masm);
|
| -}
|
| -
|
| -
|
| -static void Generate_JSConstructStubHelper(MacroAssembler* masm,
|
| - bool is_api_function,
|
| - bool create_implicit_receiver,
|
| - bool check_derived_construct) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax: number of arguments
|
| - // -- rsi: context
|
| - // -- rdi: constructor function
|
| - // -- rbx: allocation site or undefined
|
| - // -- rdx: new target
|
| - // -----------------------------------
|
| -
|
| - // Enter a construct frame.
|
| - {
|
| - FrameScope scope(masm, StackFrame::CONSTRUCT);
|
| -
|
| - // Preserve the incoming parameters on the stack.
|
| - __ AssertUndefinedOrAllocationSite(rbx);
|
| - __ Push(rsi);
|
| - __ Push(rbx);
|
| - __ Integer32ToSmi(rcx, rax);
|
| - __ Push(rcx);
|
| -
|
| - if (create_implicit_receiver) {
|
| - // Allocate the new receiver object.
|
| - __ Push(rdi);
|
| - __ Push(rdx);
|
| - FastNewObjectStub stub(masm->isolate());
|
| - __ CallStub(&stub);
|
| - __ movp(rbx, rax);
|
| - __ Pop(rdx);
|
| - __ Pop(rdi);
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- rdi: constructor function
|
| - // -- rbx: newly allocated object
|
| - // -- rdx: new target
|
| - // -----------------------------------
|
| -
|
| - // Retrieve smi-tagged arguments count from the stack.
|
| - __ SmiToInteger32(rax, Operand(rsp, 0 * kPointerSize));
|
| - }
|
| -
|
| - 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(rbx);
|
| - __ Push(rbx);
|
| - } else {
|
| - __ PushRoot(Heap::kTheHoleValueRootIndex);
|
| - }
|
| -
|
| - // Set up pointer to last argument.
|
| - __ leap(rbx, Operand(rbp, StandardFrameConstants::kCallerSPOffset));
|
| -
|
| - // Copy arguments and receiver to the expression stack.
|
| - Label loop, entry;
|
| - __ movp(rcx, rax);
|
| - __ jmp(&entry);
|
| - __ bind(&loop);
|
| - __ Push(Operand(rbx, rcx, times_pointer_size, 0));
|
| - __ bind(&entry);
|
| - __ decp(rcx);
|
| - __ j(greater_equal, &loop);
|
| -
|
| - // Call the function.
|
| - ParameterCount actual(rax);
|
| - __ InvokeFunction(rdi, rdx, actual, CALL_FUNCTION,
|
| - CheckDebugStepCallWrapper());
|
| -
|
| - // Store offset of return address for deoptimizer.
|
| - if (create_implicit_receiver && !is_api_function) {
|
| - masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset());
|
| - }
|
| -
|
| - // Restore context from the frame.
|
| - __ movp(rsi, Operand(rbp, ConstructFrameConstants::kContextOffset));
|
| -
|
| - if (create_implicit_receiver) {
|
| - // If the result is an object (in the ECMA sense), we should get rid
|
| - // of the receiver and use the result; see ECMA-262 section 13.2.2-7
|
| - // on page 74.
|
| - Label use_receiver, exit;
|
| - // If the result is a smi, it is *not* an object in the ECMA sense.
|
| - __ JumpIfSmi(rax, &use_receiver);
|
| -
|
| - // If the type of the result (stored in its map) is less than
|
| - // FIRST_JS_RECEIVER_TYPE, it is not an object in the ECMA sense.
|
| - STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE);
|
| - __ CmpObjectType(rax, FIRST_JS_RECEIVER_TYPE, rcx);
|
| - __ j(above_equal, &exit);
|
| -
|
| - // Throw away the result of the constructor invocation and use the
|
| - // on-stack receiver as the result.
|
| - __ bind(&use_receiver);
|
| - __ movp(rax, Operand(rsp, 0));
|
| -
|
| - // Restore the arguments count and leave the construct frame. The
|
| - // arguments count is stored below the receiver.
|
| - __ bind(&exit);
|
| - __ movp(rbx, Operand(rsp, 1 * kPointerSize));
|
| - } else {
|
| - __ movp(rbx, Operand(rsp, 0));
|
| - }
|
| -
|
| - // Leave construct frame.
|
| - }
|
| -
|
| - // ES6 9.2.2. Step 13+
|
| - // Check that the result is not a Smi, indicating that the constructor result
|
| - // from a derived class is neither undefined nor an Object.
|
| - if (check_derived_construct) {
|
| - Label dont_throw;
|
| - __ JumpIfNotSmi(rax, &dont_throw);
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ CallRuntime(Runtime::kThrowDerivedConstructorReturnedNonObject);
|
| - }
|
| - __ bind(&dont_throw);
|
| - }
|
| -
|
| - // Remove caller arguments from the stack and return.
|
| - __ PopReturnAddressTo(rcx);
|
| - SmiIndex index = masm->SmiToIndex(rbx, rbx, kPointerSizeLog2);
|
| - __ leap(rsp, Operand(rsp, index.reg, index.scale, 1 * kPointerSize));
|
| - __ PushReturnAddressFrom(rcx);
|
| - if (create_implicit_receiver) {
|
| - Counters* counters = masm->isolate()->counters();
|
| - __ IncrementCounter(counters->constructed_objects(), 1);
|
| - }
|
| - __ ret(0);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) {
|
| - Generate_JSConstructStubHelper(masm, false, true, false);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_JSConstructStubApi(MacroAssembler* masm) {
|
| - Generate_JSConstructStubHelper(masm, true, false, false);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_JSBuiltinsConstructStub(MacroAssembler* masm) {
|
| - Generate_JSConstructStubHelper(masm, false, false, false);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_JSBuiltinsConstructStubForDerived(
|
| - MacroAssembler* masm) {
|
| - Generate_JSConstructStubHelper(masm, false, false, true);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_ConstructedNonConstructable(MacroAssembler* masm) {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ Push(rdi);
|
| - __ CallRuntime(Runtime::kThrowConstructedNonConstructable);
|
| -}
|
| -
|
| -
|
| -enum IsTagged { kRaxIsSmiTagged, kRaxIsUntaggedInt };
|
| -
|
| -
|
| -// Clobbers rcx, r11, kScratchRegister; preserves all other registers.
|
| -static void Generate_CheckStackOverflow(MacroAssembler* masm,
|
| - IsTagged rax_is_tagged) {
|
| - // rax : the number of items to be pushed to the stack
|
| - //
|
| - // 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(kScratchRegister, Heap::kRealStackLimitRootIndex);
|
| - __ movp(rcx, rsp);
|
| - // Make rcx the space we have left. The stack might already be overflowed
|
| - // here which will cause rcx to become negative.
|
| - __ subp(rcx, kScratchRegister);
|
| - // Make r11 the space we need for the array when it is unrolled onto the
|
| - // stack.
|
| - if (rax_is_tagged == kRaxIsSmiTagged) {
|
| - __ PositiveSmiTimesPowerOfTwoToInteger64(r11, rax, kPointerSizeLog2);
|
| - } else {
|
| - DCHECK(rax_is_tagged == kRaxIsUntaggedInt);
|
| - __ movp(r11, rax);
|
| - __ shlq(r11, Immediate(kPointerSizeLog2));
|
| - }
|
| - // Check if the arguments will overflow the stack.
|
| - __ cmpp(rcx, r11);
|
| - __ j(greater, &okay); // Signed comparison.
|
| -
|
| - // Out of stack space.
|
| - __ CallRuntime(Runtime::kThrowStackOverflow);
|
| -
|
| - __ bind(&okay);
|
| -}
|
| -
|
| -
|
| -static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm,
|
| - bool is_construct) {
|
| - ProfileEntryHookStub::MaybeCallEntryHook(masm);
|
| -
|
| - // Expects five C++ function parameters.
|
| - // - Object* new_target
|
| - // - JSFunction* function
|
| - // - Object* receiver
|
| - // - int argc
|
| - // - Object*** argv
|
| - // (see Handle::Invoke in execution.cc).
|
| -
|
| - // Open a C++ scope for the FrameScope.
|
| - {
|
| - // Platform specific argument handling. After this, the stack contains
|
| - // an internal frame and the pushed function and receiver, and
|
| - // register rax and rbx holds the argument count and argument array,
|
| - // while rdi holds the function pointer, rsi the context, and rdx the
|
| - // new.target.
|
| -
|
| -#ifdef _WIN64
|
| - // MSVC parameters in:
|
| - // rcx : new_target
|
| - // rdx : function
|
| - // r8 : receiver
|
| - // r9 : argc
|
| - // [rsp+0x20] : argv
|
| -
|
| - // Enter an internal frame.
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| -
|
| - // Setup the context (we need to use the caller context from the isolate).
|
| - ExternalReference context_address(Isolate::kContextAddress,
|
| - masm->isolate());
|
| - __ movp(rsi, masm->ExternalOperand(context_address));
|
| -
|
| - // Push the function and the receiver onto the stack.
|
| - __ Push(rdx);
|
| - __ Push(r8);
|
| -
|
| - // Load the number of arguments and setup pointer to the arguments.
|
| - __ movp(rax, r9);
|
| - // Load the previous frame pointer to access C argument on stack
|
| - __ movp(kScratchRegister, Operand(rbp, 0));
|
| - __ movp(rbx, Operand(kScratchRegister, EntryFrameConstants::kArgvOffset));
|
| - // Load the function pointer into rdi.
|
| - __ movp(rdi, rdx);
|
| - // Load the new.target into rdx.
|
| - __ movp(rdx, rcx);
|
| -#else // _WIN64
|
| - // GCC parameters in:
|
| - // rdi : new_target
|
| - // rsi : function
|
| - // rdx : receiver
|
| - // rcx : argc
|
| - // r8 : argv
|
| -
|
| - __ movp(r11, rdi);
|
| - __ movp(rdi, rsi);
|
| - // rdi : function
|
| - // r11 : new_target
|
| -
|
| - // Clear the context before we push it when entering the internal frame.
|
| - __ Set(rsi, 0);
|
| -
|
| - // Enter an internal frame.
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| -
|
| - // Setup the context (we need to use the caller context from the isolate).
|
| - ExternalReference context_address(Isolate::kContextAddress,
|
| - masm->isolate());
|
| - __ movp(rsi, masm->ExternalOperand(context_address));
|
| -
|
| - // Push the function and receiver onto the stack.
|
| - __ Push(rdi);
|
| - __ Push(rdx);
|
| -
|
| - // Load the number of arguments and setup pointer to the arguments.
|
| - __ movp(rax, rcx);
|
| - __ movp(rbx, r8);
|
| -
|
| - // Load the new.target into rdx.
|
| - __ movp(rdx, r11);
|
| -#endif // _WIN64
|
| -
|
| - // Current stack contents:
|
| - // [rsp + 2 * kPointerSize ... ] : Internal frame
|
| - // [rsp + kPointerSize] : function
|
| - // [rsp] : receiver
|
| - // Current register contents:
|
| - // rax : argc
|
| - // rbx : argv
|
| - // rsi : context
|
| - // rdi : function
|
| - // rdx : new.target
|
| -
|
| - // Check if we have enough stack space to push all arguments.
|
| - // Expects argument count in rax. Clobbers rcx, r11.
|
| - Generate_CheckStackOverflow(masm, kRaxIsUntaggedInt);
|
| -
|
| - // Copy arguments to the stack in a loop.
|
| - // Register rbx points to array of pointers to handle locations.
|
| - // Push the values of these handles.
|
| - Label loop, entry;
|
| - __ Set(rcx, 0); // Set loop variable to 0.
|
| - __ jmp(&entry, Label::kNear);
|
| - __ bind(&loop);
|
| - __ movp(kScratchRegister, Operand(rbx, rcx, times_pointer_size, 0));
|
| - __ Push(Operand(kScratchRegister, 0)); // dereference handle
|
| - __ addp(rcx, Immediate(1));
|
| - __ bind(&entry);
|
| - __ cmpp(rcx, rax);
|
| - __ j(not_equal, &loop);
|
| -
|
| - // Invoke the builtin code.
|
| - Handle<Code> builtin = is_construct
|
| - ? masm->isolate()->builtins()->Construct()
|
| - : masm->isolate()->builtins()->Call();
|
| - __ Call(builtin, RelocInfo::CODE_TARGET);
|
| -
|
| - // Exit the internal frame. Notice that this also removes the empty
|
| - // context and the function left on the stack by the code
|
| - // invocation.
|
| - }
|
| -
|
| - // TODO(X64): Is argument correct? Is there a receiver to remove?
|
| - __ ret(1 * kPointerSize); // Remove receiver.
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) {
|
| - Generate_JSEntryTrampolineHelper(masm, false);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) {
|
| - Generate_JSEntryTrampolineHelper(masm, true);
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_ResumeGeneratorTrampoline(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the value to pass to the generator
|
| - // -- rbx : the JSGeneratorObject to resume
|
| - // -- rdx : the resume mode (tagged)
|
| - // -- rsp[0] : return address
|
| - // -----------------------------------
|
| - __ AssertGeneratorObject(rbx);
|
| -
|
| - // Store input value into generator object.
|
| - __ movp(FieldOperand(rbx, JSGeneratorObject::kInputOrDebugPosOffset), rax);
|
| - __ RecordWriteField(rbx, JSGeneratorObject::kInputOrDebugPosOffset, rax, rcx,
|
| - kDontSaveFPRegs);
|
| -
|
| - // Store resume mode into generator object.
|
| - __ movp(FieldOperand(rbx, JSGeneratorObject::kResumeModeOffset), rdx);
|
| -
|
| - // Load suspended function and context.
|
| - __ movp(rsi, FieldOperand(rbx, JSGeneratorObject::kContextOffset));
|
| - __ movp(rdi, FieldOperand(rbx, JSGeneratorObject::kFunctionOffset));
|
| -
|
| - // Flood function if we are stepping.
|
| - Label prepare_step_in_if_stepping, prepare_step_in_suspended_generator;
|
| - Label stepping_prepared;
|
| - ExternalReference last_step_action =
|
| - ExternalReference::debug_last_step_action_address(masm->isolate());
|
| - Operand last_step_action_operand = masm->ExternalOperand(last_step_action);
|
| - STATIC_ASSERT(StepFrame > StepIn);
|
| - __ cmpb(last_step_action_operand, Immediate(StepIn));
|
| - __ j(greater_equal, &prepare_step_in_if_stepping);
|
| -
|
| - // Flood function if we need to continue stepping in the suspended generator.
|
| - ExternalReference debug_suspended_generator =
|
| - ExternalReference::debug_suspended_generator_address(masm->isolate());
|
| - Operand debug_suspended_generator_operand =
|
| - masm->ExternalOperand(debug_suspended_generator);
|
| - __ cmpp(rbx, debug_suspended_generator_operand);
|
| - __ j(equal, &prepare_step_in_suspended_generator);
|
| - __ bind(&stepping_prepared);
|
| -
|
| - // Pop return address.
|
| - __ PopReturnAddressTo(rax);
|
| -
|
| - // Push receiver.
|
| - __ Push(FieldOperand(rbx, JSGeneratorObject::kReceiverOffset));
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- rax : return address
|
| - // -- rbx : the JSGeneratorObject to resume
|
| - // -- rdx : the resume mode (tagged)
|
| - // -- rdi : generator function
|
| - // -- rsi : generator context
|
| - // -- rsp[0] : generator receiver
|
| - // -----------------------------------
|
| -
|
| - // Push holes for arguments to generator function. Since the parser forced
|
| - // context allocation for any variables in generators, the actual argument
|
| - // values have already been copied into the context and these dummy values
|
| - // will never be used.
|
| - __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
|
| - __ LoadSharedFunctionInfoSpecialField(
|
| - rcx, rcx, SharedFunctionInfo::kFormalParameterCountOffset);
|
| - {
|
| - Label done_loop, loop;
|
| - __ bind(&loop);
|
| - __ subl(rcx, Immediate(1));
|
| - __ j(carry, &done_loop, Label::kNear);
|
| - __ PushRoot(Heap::kTheHoleValueRootIndex);
|
| - __ jmp(&loop);
|
| - __ bind(&done_loop);
|
| - }
|
| -
|
| - // Dispatch on the kind of generator object.
|
| - Label old_generator;
|
| - __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
|
| - __ movp(rcx, FieldOperand(rcx, SharedFunctionInfo::kFunctionDataOffset));
|
| - __ CmpObjectType(rcx, BYTECODE_ARRAY_TYPE, rcx);
|
| - __ j(not_equal, &old_generator);
|
| -
|
| - // New-style (ignition/turbofan) generator object.
|
| - {
|
| - __ PushReturnAddressFrom(rax);
|
| - __ movp(rax, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
|
| - __ LoadSharedFunctionInfoSpecialField(
|
| - rax, rax, SharedFunctionInfo::kFormalParameterCountOffset);
|
| - // We abuse new.target both to indicate that this is a resume call and to
|
| - // pass in the generator object. In ordinary calls, new.target is always
|
| - // undefined because generator functions are non-constructable.
|
| - __ movp(rdx, rbx);
|
| - __ jmp(FieldOperand(rdi, JSFunction::kCodeEntryOffset));
|
| - }
|
| -
|
| - // Old-style (full-codegen) generator object.
|
| - __ bind(&old_generator);
|
| - {
|
| - // Enter a new JavaScript frame, and initialize its slots as they were when
|
| - // the generator was suspended.
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ PushReturnAddressFrom(rax); // Return address.
|
| - __ Push(rbp); // Caller's frame pointer.
|
| - __ Move(rbp, rsp);
|
| - __ Push(rsi); // Callee's context.
|
| - __ Push(rdi); // Callee's JS Function.
|
| -
|
| - // Restore the operand stack.
|
| - __ movp(rsi, FieldOperand(rbx, JSGeneratorObject::kOperandStackOffset));
|
| - __ SmiToInteger32(rax, FieldOperand(rsi, FixedArray::kLengthOffset));
|
| - {
|
| - Label done_loop, loop;
|
| - __ Set(rcx, 0);
|
| - __ bind(&loop);
|
| - __ cmpl(rcx, rax);
|
| - __ j(equal, &done_loop, Label::kNear);
|
| - __ Push(
|
| - FieldOperand(rsi, rcx, times_pointer_size, FixedArray::kHeaderSize));
|
| - __ addl(rcx, Immediate(1));
|
| - __ jmp(&loop);
|
| - __ bind(&done_loop);
|
| - }
|
| -
|
| - // Reset operand stack so we don't leak.
|
| - __ LoadRoot(FieldOperand(rbx, JSGeneratorObject::kOperandStackOffset),
|
| - Heap::kEmptyFixedArrayRootIndex);
|
| -
|
| - // Restore context.
|
| - __ movp(rsi, FieldOperand(rbx, JSGeneratorObject::kContextOffset));
|
| -
|
| - // Resume the generator function at the continuation.
|
| - __ movp(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
|
| - __ movp(rdx, FieldOperand(rdx, SharedFunctionInfo::kCodeOffset));
|
| - __ SmiToInteger64(
|
| - rcx, FieldOperand(rbx, JSGeneratorObject::kContinuationOffset));
|
| - __ leap(rdx, FieldOperand(rdx, rcx, times_1, Code::kHeaderSize));
|
| - __ Move(FieldOperand(rbx, JSGeneratorObject::kContinuationOffset),
|
| - Smi::FromInt(JSGeneratorObject::kGeneratorExecuting));
|
| - __ movp(rax, rbx); // Continuation expects generator object in rax.
|
| - __ jmp(rdx);
|
| - }
|
| -
|
| - __ bind(&prepare_step_in_if_stepping);
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ Push(rbx);
|
| - __ Push(rdx);
|
| - __ Push(rdi);
|
| - __ CallRuntime(Runtime::kDebugPrepareStepInIfStepping);
|
| - __ Pop(rdx);
|
| - __ Pop(rbx);
|
| - __ movp(rdi, FieldOperand(rbx, JSGeneratorObject::kFunctionOffset));
|
| - }
|
| - __ jmp(&stepping_prepared);
|
| -
|
| - __ bind(&prepare_step_in_suspended_generator);
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ Push(rbx);
|
| - __ Push(rdx);
|
| - __ CallRuntime(Runtime::kDebugPrepareStepInSuspendedGenerator);
|
| - __ Pop(rdx);
|
| - __ Pop(rbx);
|
| - __ movp(rdi, FieldOperand(rbx, JSGeneratorObject::kFunctionOffset));
|
| - }
|
| - __ jmp(&stepping_prepared);
|
| -}
|
| -
|
| -static void LeaveInterpreterFrame(MacroAssembler* masm, Register scratch1,
|
| - Register scratch2) {
|
| - Register args_count = scratch1;
|
| - Register return_pc = scratch2;
|
| -
|
| - // Get the arguments + receiver count.
|
| - __ movp(args_count,
|
| - Operand(rbp, InterpreterFrameConstants::kBytecodeArrayFromFp));
|
| - __ movl(args_count,
|
| - FieldOperand(args_count, BytecodeArray::kParameterSizeOffset));
|
| -
|
| - // Leave the frame (also dropping the register file).
|
| - __ leave();
|
| -
|
| - // Drop receiver + arguments.
|
| - __ PopReturnAddressTo(return_pc);
|
| - __ addp(rsp, args_count);
|
| - __ PushReturnAddressFrom(return_pc);
|
| -}
|
| -
|
| -// 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 rdi: the JS function object being called
|
| -// o rdx: the new target
|
| -// o rsi: our context
|
| -// o rbp: the caller's frame pointer
|
| -// o rsp: stack pointer (pointing to return address)
|
| -//
|
| -// The function builds an interpreter frame. See InterpreterFrameConstants in
|
| -// frames.h for its layout.
|
| -void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
|
| - ProfileEntryHookStub::MaybeCallEntryHook(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);
|
| - __ pushq(rbp); // Caller's frame pointer.
|
| - __ movp(rbp, rsp);
|
| - __ Push(rsi); // Callee's context.
|
| - __ Push(rdi); // Callee's JS function.
|
| - __ Push(rdx); // Callee's new target.
|
| -
|
| - // Get the bytecode array from the function object (or from the DebugInfo if
|
| - // it is present) and load it into kInterpreterBytecodeArrayRegister.
|
| - __ movp(rax, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
|
| - Label load_debug_bytecode_array, bytecode_array_loaded;
|
| - DCHECK_EQ(Smi::FromInt(0), DebugInfo::uninitialized());
|
| - __ cmpp(FieldOperand(rax, SharedFunctionInfo::kDebugInfoOffset),
|
| - Immediate(0));
|
| - __ j(not_equal, &load_debug_bytecode_array);
|
| - __ movp(kInterpreterBytecodeArrayRegister,
|
| - FieldOperand(rax, SharedFunctionInfo::kFunctionDataOffset));
|
| - __ bind(&bytecode_array_loaded);
|
| -
|
| - // Check function data field is actually a BytecodeArray object.
|
| - Label bytecode_array_not_present;
|
| - __ CompareRoot(kInterpreterBytecodeArrayRegister,
|
| - Heap::kUndefinedValueRootIndex);
|
| - __ j(equal, &bytecode_array_not_present);
|
| - if (FLAG_debug_code) {
|
| - __ AssertNotSmi(kInterpreterBytecodeArrayRegister);
|
| - __ CmpObjectType(kInterpreterBytecodeArrayRegister, BYTECODE_ARRAY_TYPE,
|
| - rax);
|
| - __ Assert(equal, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
|
| - }
|
| -
|
| - // Load initial bytecode offset.
|
| - __ movp(kInterpreterBytecodeOffsetRegister,
|
| - Immediate(BytecodeArray::kHeaderSize - kHeapObjectTag));
|
| -
|
| - // Push bytecode array and Smi tagged bytecode offset.
|
| - __ Push(kInterpreterBytecodeArrayRegister);
|
| - __ Integer32ToSmi(rcx, kInterpreterBytecodeOffsetRegister);
|
| - __ Push(rcx);
|
| -
|
| - // Allocate the local and temporary register file on the stack.
|
| - {
|
| - // Load frame size from the BytecodeArray object.
|
| - __ movl(rcx, FieldOperand(kInterpreterBytecodeArrayRegister,
|
| - BytecodeArray::kFrameSizeOffset));
|
| -
|
| - // Do a stack check to ensure we don't go over the limit.
|
| - Label ok;
|
| - __ movp(rdx, rsp);
|
| - __ subp(rdx, rcx);
|
| - __ CompareRoot(rdx, Heap::kRealStackLimitRootIndex);
|
| - __ j(above_equal, &ok, Label::kNear);
|
| - __ 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(rdx, Heap::kUndefinedValueRootIndex);
|
| - __ j(always, &loop_check);
|
| - __ bind(&loop_header);
|
| - // TODO(rmcilroy): Consider doing more than one push per loop iteration.
|
| - __ Push(rdx);
|
| - // Continue loop if not done.
|
| - __ bind(&loop_check);
|
| - __ subp(rcx, Immediate(kPointerSize));
|
| - __ j(greater_equal, &loop_header, Label::kNear);
|
| - }
|
| -
|
| - // Load accumulator and dispatch table into registers.
|
| - __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex);
|
| - __ Move(
|
| - kInterpreterDispatchTableRegister,
|
| - ExternalReference::interpreter_dispatch_table_address(masm->isolate()));
|
| -
|
| - // Dispatch to the first bytecode handler for the function.
|
| - __ movzxbp(rbx, Operand(kInterpreterBytecodeArrayRegister,
|
| - kInterpreterBytecodeOffsetRegister, times_1, 0));
|
| - __ movp(rbx, Operand(kInterpreterDispatchTableRegister, rbx,
|
| - times_pointer_size, 0));
|
| - __ call(rbx);
|
| - masm->isolate()->heap()->SetInterpreterEntryReturnPCOffset(masm->pc_offset());
|
| -
|
| - // The return value is in rax.
|
| - LeaveInterpreterFrame(masm, rbx, rcx);
|
| - __ ret(0);
|
| -
|
| - // Load debug copy of the bytecode array.
|
| - __ bind(&load_debug_bytecode_array);
|
| - Register debug_info = kInterpreterBytecodeArrayRegister;
|
| - __ movp(debug_info, FieldOperand(rax, SharedFunctionInfo::kDebugInfoOffset));
|
| - __ movp(kInterpreterBytecodeArrayRegister,
|
| - FieldOperand(debug_info, DebugInfo::kAbstractCodeIndex));
|
| - __ jmp(&bytecode_array_loaded);
|
| -
|
| - // If the bytecode array is no longer present, then the underlying function
|
| - // has been switched to a different kind of code and we heal the closure by
|
| - // switching the code entry field over to the new code object as well.
|
| - __ bind(&bytecode_array_not_present);
|
| - __ leave(); // Leave the frame so we can tail call.
|
| - __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
|
| - __ movp(rcx, FieldOperand(rcx, SharedFunctionInfo::kCodeOffset));
|
| - __ leap(rcx, FieldOperand(rcx, Code::kHeaderSize));
|
| - __ movp(FieldOperand(rdi, JSFunction::kCodeEntryOffset), rcx);
|
| - __ RecordWriteCodeEntryField(rdi, rcx, r15);
|
| - __ jmp(rcx);
|
| -}
|
| -
|
| -void Builtins::Generate_InterpreterMarkBaselineOnReturn(MacroAssembler* masm) {
|
| - // Save the function and context for call to CompileBaseline.
|
| - __ movp(rdi, Operand(rbp, StandardFrameConstants::kFunctionOffset));
|
| - __ movp(kContextRegister,
|
| - Operand(rbp, StandardFrameConstants::kContextOffset));
|
| -
|
| - // Leave the frame before recompiling for baseline so that we don't count as
|
| - // an activation on the stack.
|
| - LeaveInterpreterFrame(masm, rbx, rcx);
|
| -
|
| - {
|
| - FrameScope frame_scope(masm, StackFrame::INTERNAL);
|
| - // Push return value.
|
| - __ Push(rax);
|
| -
|
| - // Push function as argument and compile for baseline.
|
| - __ Push(rdi);
|
| - __ CallRuntime(Runtime::kCompileBaseline);
|
| -
|
| - // Restore return value.
|
| - __ Pop(rax);
|
| - }
|
| - __ ret(0);
|
| -}
|
| -
|
| -static void Generate_InterpreterPushArgs(MacroAssembler* masm,
|
| - bool push_receiver) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rbx : 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.
|
| - // -----------------------------------
|
| -
|
| - // Find the address of the last argument.
|
| - __ movp(rcx, rax);
|
| - if (push_receiver) {
|
| - __ addp(rcx, Immediate(1)); // Add one for receiver.
|
| - }
|
| -
|
| - __ shlp(rcx, Immediate(kPointerSizeLog2));
|
| - __ negp(rcx);
|
| - __ addp(rcx, rbx);
|
| -
|
| - // Push the arguments.
|
| - Label loop_header, loop_check;
|
| - __ j(always, &loop_check);
|
| - __ bind(&loop_header);
|
| - __ Push(Operand(rbx, 0));
|
| - __ subp(rbx, Immediate(kPointerSize));
|
| - __ bind(&loop_check);
|
| - __ cmpp(rbx, rcx);
|
| - __ j(greater, &loop_header, Label::kNear);
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_InterpreterPushArgsAndCallImpl(
|
| - MacroAssembler* masm, TailCallMode tail_call_mode,
|
| - CallableType function_type) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rbx : 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.
|
| - // -- rdi : the target to call (can be any Object).
|
| - // -----------------------------------
|
| -
|
| - // Pop return address to allow tail-call after pushing arguments.
|
| - __ PopReturnAddressTo(kScratchRegister);
|
| -
|
| - Generate_InterpreterPushArgs(masm, true);
|
| -
|
| - // Call the target.
|
| - __ PushReturnAddressFrom(kScratchRegister); // Re-push return address.
|
| -
|
| - if (function_type == CallableType::kJSFunction) {
|
| - __ Jump(masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny,
|
| - tail_call_mode),
|
| - RelocInfo::CODE_TARGET);
|
| - } else {
|
| - DCHECK_EQ(function_type, CallableType::kAny);
|
| - __ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny,
|
| - tail_call_mode),
|
| - RelocInfo::CODE_TARGET);
|
| - }
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdx : the new target (either the same as the constructor or
|
| - // the JSFunction on which new was invoked initially)
|
| - // -- rdi : the constructor to call (can be any Object)
|
| - // -- rbx : 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.
|
| - // -----------------------------------
|
| -
|
| - // Pop return address to allow tail-call after pushing arguments.
|
| - __ PopReturnAddressTo(kScratchRegister);
|
| -
|
| - // Push slot for the receiver to be constructed.
|
| - __ Push(Immediate(0));
|
| -
|
| - Generate_InterpreterPushArgs(masm, false);
|
| -
|
| - // Push return address in preparation for the tail-call.
|
| - __ PushReturnAddressFrom(kScratchRegister);
|
| -
|
| - // Call the constructor (rax, rdx, rdi passed on).
|
| - __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
|
| -}
|
| -
|
| -void Builtins::Generate_InterpreterEnterBytecodeDispatch(MacroAssembler* masm) {
|
| - // Set the return address to the correct point in the interpreter entry
|
| - // trampoline.
|
| - Smi* interpreter_entry_return_pc_offset(
|
| - masm->isolate()->heap()->interpreter_entry_return_pc_offset());
|
| - DCHECK_NE(interpreter_entry_return_pc_offset, Smi::FromInt(0));
|
| - __ Move(rbx, masm->isolate()->builtins()->InterpreterEntryTrampoline());
|
| - __ addp(rbx, Immediate(interpreter_entry_return_pc_offset->value() +
|
| - Code::kHeaderSize - kHeapObjectTag));
|
| - __ Push(rbx);
|
| -
|
| - // Initialize dispatch table register.
|
| - __ Move(
|
| - kInterpreterDispatchTableRegister,
|
| - ExternalReference::interpreter_dispatch_table_address(masm->isolate()));
|
| -
|
| - // Get the bytecode array pointer from the frame.
|
| - __ movp(kInterpreterBytecodeArrayRegister,
|
| - Operand(rbp, InterpreterFrameConstants::kBytecodeArrayFromFp));
|
| -
|
| - if (FLAG_debug_code) {
|
| - // Check function data field is actually a BytecodeArray object.
|
| - __ AssertNotSmi(kInterpreterBytecodeArrayRegister);
|
| - __ CmpObjectType(kInterpreterBytecodeArrayRegister, BYTECODE_ARRAY_TYPE,
|
| - rbx);
|
| - __ Assert(equal, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
|
| - }
|
| -
|
| - // Get the target bytecode offset from the frame.
|
| - __ movp(kInterpreterBytecodeOffsetRegister,
|
| - Operand(rbp, InterpreterFrameConstants::kBytecodeOffsetFromFp));
|
| - __ SmiToInteger32(kInterpreterBytecodeOffsetRegister,
|
| - kInterpreterBytecodeOffsetRegister);
|
| -
|
| - // Dispatch to the target bytecode.
|
| - __ movzxbp(rbx, Operand(kInterpreterBytecodeArrayRegister,
|
| - kInterpreterBytecodeOffsetRegister, times_1, 0));
|
| - __ movp(rbx, Operand(kInterpreterDispatchTableRegister, rbx,
|
| - times_pointer_size, 0));
|
| - __ jmp(rbx);
|
| -}
|
| -
|
| -void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argument count (preserved for callee)
|
| - // -- rdx : new target (preserved for callee)
|
| - // -- rdi : target function (preserved for callee)
|
| - // -----------------------------------
|
| - // First lookup code, maybe we don't need to compile!
|
| - Label gotta_call_runtime;
|
| - Label maybe_call_runtime;
|
| - Label try_shared;
|
| - Label loop_top, loop_bottom;
|
| -
|
| - Register closure = rdi;
|
| - Register map = r8;
|
| - Register index = r9;
|
| - __ movp(map, FieldOperand(closure, JSFunction::kSharedFunctionInfoOffset));
|
| - __ movp(map, FieldOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
|
| - __ SmiToInteger32(index, FieldOperand(map, FixedArray::kLengthOffset));
|
| - __ cmpl(index, Immediate(2));
|
| - __ j(less, &gotta_call_runtime);
|
| -
|
| - // Find literals.
|
| - // r14 : native context
|
| - // r9 : length / index
|
| - // r8 : optimized code map
|
| - // rdx : new target
|
| - // rdi : closure
|
| - Register native_context = r14;
|
| - __ movp(native_context, NativeContextOperand());
|
| -
|
| - __ bind(&loop_top);
|
| - // Native context match?
|
| - Register temp = r11;
|
| - __ movp(temp, FieldOperand(map, index, times_pointer_size,
|
| - SharedFunctionInfo::kOffsetToPreviousContext));
|
| - __ movp(temp, FieldOperand(temp, WeakCell::kValueOffset));
|
| - __ cmpp(temp, native_context);
|
| - __ j(not_equal, &loop_bottom);
|
| - // OSR id set to none?
|
| - __ movp(temp, FieldOperand(map, index, times_pointer_size,
|
| - SharedFunctionInfo::kOffsetToPreviousOsrAstId));
|
| - __ SmiToInteger32(temp, temp);
|
| - const int bailout_id = BailoutId::None().ToInt();
|
| - __ cmpl(temp, Immediate(bailout_id));
|
| - __ j(not_equal, &loop_bottom);
|
| -
|
| - // Literals available?
|
| - Label got_literals, maybe_cleared_weakcell;
|
| - __ movp(temp, FieldOperand(map, index, times_pointer_size,
|
| - SharedFunctionInfo::kOffsetToPreviousLiterals));
|
| - // temp contains either a WeakCell pointing to the literals array or the
|
| - // literals array directly.
|
| - STATIC_ASSERT(WeakCell::kValueOffset == FixedArray::kLengthOffset);
|
| - __ movp(r15, FieldOperand(temp, WeakCell::kValueOffset));
|
| - __ JumpIfSmi(r15, &maybe_cleared_weakcell);
|
| - // r15 is a pointer, therefore temp is a WeakCell pointing to a literals
|
| - // array.
|
| - __ movp(temp, FieldOperand(temp, WeakCell::kValueOffset));
|
| - __ jmp(&got_literals);
|
| -
|
| - // r15 is a smi. If it's 0, then we are looking at a cleared WeakCell
|
| - // around the literals array, and we should visit the runtime. If it's > 0,
|
| - // then temp already contains the literals array.
|
| - __ bind(&maybe_cleared_weakcell);
|
| - __ cmpp(r15, Immediate(0));
|
| - __ j(equal, &gotta_call_runtime);
|
| -
|
| - // Save the literals in the closure.
|
| - __ bind(&got_literals);
|
| - __ movp(FieldOperand(closure, JSFunction::kLiteralsOffset), temp);
|
| - __ movp(r15, index);
|
| - __ RecordWriteField(closure, JSFunction::kLiteralsOffset, temp, r15,
|
| - kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
|
| -
|
| - // Code available?
|
| - Register entry = rcx;
|
| - __ movp(entry, FieldOperand(map, index, times_pointer_size,
|
| - SharedFunctionInfo::kOffsetToPreviousCachedCode));
|
| - __ movp(entry, FieldOperand(entry, WeakCell::kValueOffset));
|
| - __ JumpIfSmi(entry, &maybe_call_runtime);
|
| -
|
| - // Found literals and code. Get them into the closure and return.
|
| - __ leap(entry, FieldOperand(entry, Code::kHeaderSize));
|
| -
|
| - Label install_optimized_code_and_tailcall;
|
| - __ bind(&install_optimized_code_and_tailcall);
|
| - __ movp(FieldOperand(closure, JSFunction::kCodeEntryOffset), entry);
|
| - __ RecordWriteCodeEntryField(closure, entry, r15);
|
| -
|
| - // Link the closure into the optimized function list.
|
| - // rcx : code entry (entry)
|
| - // r14 : native context
|
| - // rdx : new target
|
| - // rdi : closure
|
| - __ movp(rbx,
|
| - ContextOperand(native_context, Context::OPTIMIZED_FUNCTIONS_LIST));
|
| - __ movp(FieldOperand(closure, JSFunction::kNextFunctionLinkOffset), rbx);
|
| - __ RecordWriteField(closure, JSFunction::kNextFunctionLinkOffset, rbx, r15,
|
| - kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
|
| - const int function_list_offset =
|
| - Context::SlotOffset(Context::OPTIMIZED_FUNCTIONS_LIST);
|
| - __ movp(ContextOperand(native_context, Context::OPTIMIZED_FUNCTIONS_LIST),
|
| - closure);
|
| - // Save closure before the write barrier.
|
| - __ movp(rbx, closure);
|
| - __ RecordWriteContextSlot(native_context, function_list_offset, closure, r15,
|
| - kDontSaveFPRegs);
|
| - __ movp(closure, rbx);
|
| - __ jmp(entry);
|
| -
|
| - __ bind(&loop_bottom);
|
| - __ subl(index, Immediate(SharedFunctionInfo::kEntryLength));
|
| - __ cmpl(index, Immediate(1));
|
| - __ j(greater, &loop_top);
|
| -
|
| - // We found neither literals nor code.
|
| - __ jmp(&gotta_call_runtime);
|
| -
|
| - __ bind(&maybe_call_runtime);
|
| -
|
| - // Last possibility. Check the context free optimized code map entry.
|
| - __ movp(entry, FieldOperand(map, FixedArray::kHeaderSize +
|
| - SharedFunctionInfo::kSharedCodeIndex));
|
| - __ movp(entry, FieldOperand(entry, WeakCell::kValueOffset));
|
| - __ JumpIfSmi(entry, &try_shared);
|
| -
|
| - // Store code entry in the closure.
|
| - __ leap(entry, FieldOperand(entry, Code::kHeaderSize));
|
| - __ jmp(&install_optimized_code_and_tailcall);
|
| -
|
| - __ bind(&try_shared);
|
| - // Is the full code valid?
|
| - __ movp(entry, FieldOperand(closure, JSFunction::kSharedFunctionInfoOffset));
|
| - __ movp(entry, FieldOperand(entry, SharedFunctionInfo::kCodeOffset));
|
| - __ movl(rbx, FieldOperand(entry, Code::kFlagsOffset));
|
| - __ andl(rbx, Immediate(Code::KindField::kMask));
|
| - __ shrl(rbx, Immediate(Code::KindField::kShift));
|
| - __ cmpl(rbx, Immediate(Code::BUILTIN));
|
| - __ j(equal, &gotta_call_runtime);
|
| - // Yes, install the full code.
|
| - __ leap(entry, FieldOperand(entry, Code::kHeaderSize));
|
| - __ movp(FieldOperand(closure, JSFunction::kCodeEntryOffset), entry);
|
| - __ RecordWriteCodeEntryField(closure, entry, r15);
|
| - __ jmp(entry);
|
| -
|
| - __ bind(&gotta_call_runtime);
|
| - GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy);
|
| -}
|
| -
|
| -void Builtins::Generate_CompileBaseline(MacroAssembler* masm) {
|
| - GenerateTailCallToReturnedCode(masm, Runtime::kCompileBaseline);
|
| -}
|
| -
|
| -void Builtins::Generate_CompileOptimized(MacroAssembler* masm) {
|
| - GenerateTailCallToReturnedCode(masm,
|
| - Runtime::kCompileOptimized_NotConcurrent);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_CompileOptimizedConcurrent(MacroAssembler* masm) {
|
| - GenerateTailCallToReturnedCode(masm, Runtime::kCompileOptimized_Concurrent);
|
| -}
|
| -
|
| -void Builtins::Generate_InstantiateAsmJs(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argument count (preserved for callee)
|
| - // -- rdx : new target (preserved for callee)
|
| - // -- rdi : target function (preserved for callee)
|
| - // -----------------------------------
|
| - Label failed;
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - // Push the number of arguments to the callee.
|
| - __ Integer32ToSmi(rax, rax);
|
| - __ Push(rax);
|
| - // Push a copy of the target function and the new target.
|
| - __ Push(rdi);
|
| - __ Push(rdx);
|
| -
|
| - // The function.
|
| - __ Push(rdi);
|
| - // Copy arguments from caller (stdlib, foreign, heap).
|
| - for (int i = 2; i >= 0; --i) {
|
| - __ Push(Operand(
|
| - rbp, StandardFrameConstants::kCallerSPOffset + i * kPointerSize));
|
| - }
|
| - // Call runtime, on success unwind frame, and parent frame.
|
| - __ CallRuntime(Runtime::kInstantiateAsmJs, 4);
|
| - // A smi 0 is returned on failure, an object on success.
|
| - __ JumpIfSmi(rax, &failed, Label::kNear);
|
| - scope.GenerateLeaveFrame();
|
| - __ ret(4 * kPointerSize);
|
| -
|
| - __ bind(&failed);
|
| - // Restore target function and new target.
|
| - __ Pop(rdx);
|
| - __ Pop(rdi);
|
| - __ Pop(rax);
|
| - __ SmiToInteger32(rax, rax);
|
| - }
|
| - // On failure, tail call back to regular js.
|
| - GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy);
|
| -}
|
| -
|
| -static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) {
|
| - // For now, we are relying on the fact that make_code_young doesn't do any
|
| - // garbage collection which allows us to save/restore the registers without
|
| - // worrying about which of them contain pointers. We also don't build an
|
| - // internal frame to make the code faster, since we shouldn't have to do stack
|
| - // crawls in MakeCodeYoung. This seems a bit fragile.
|
| -
|
| - // Re-execute the code that was patched back to the young age when
|
| - // the stub returns.
|
| - __ subp(Operand(rsp, 0), Immediate(5));
|
| - __ Pushad();
|
| - __ Move(arg_reg_2, ExternalReference::isolate_address(masm->isolate()));
|
| - __ movp(arg_reg_1, Operand(rsp, kNumSafepointRegisters * kPointerSize));
|
| - { // NOLINT
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ PrepareCallCFunction(2);
|
| - __ CallCFunction(
|
| - ExternalReference::get_make_code_young_function(masm->isolate()), 2);
|
| - }
|
| - __ Popad();
|
| - __ ret(0);
|
| -}
|
| -
|
| -
|
| -#define DEFINE_CODE_AGE_BUILTIN_GENERATOR(C) \
|
| -void Builtins::Generate_Make##C##CodeYoungAgainEvenMarking( \
|
| - MacroAssembler* masm) { \
|
| - GenerateMakeCodeYoungAgainCommon(masm); \
|
| -} \
|
| -void Builtins::Generate_Make##C##CodeYoungAgainOddMarking( \
|
| - MacroAssembler* masm) { \
|
| - GenerateMakeCodeYoungAgainCommon(masm); \
|
| -}
|
| -CODE_AGE_LIST(DEFINE_CODE_AGE_BUILTIN_GENERATOR)
|
| -#undef DEFINE_CODE_AGE_BUILTIN_GENERATOR
|
| -
|
| -
|
| -void Builtins::Generate_MarkCodeAsExecutedOnce(MacroAssembler* masm) {
|
| - // For now, as in GenerateMakeCodeYoungAgainCommon, we are relying on the fact
|
| - // that make_code_young doesn't do any garbage collection which allows us to
|
| - // save/restore the registers without worrying about which of them contain
|
| - // pointers.
|
| - __ Pushad();
|
| - __ Move(arg_reg_2, ExternalReference::isolate_address(masm->isolate()));
|
| - __ movp(arg_reg_1, Operand(rsp, kNumSafepointRegisters * kPointerSize));
|
| - __ subp(arg_reg_1, Immediate(Assembler::kShortCallInstructionLength));
|
| - { // NOLINT
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ PrepareCallCFunction(2);
|
| - __ CallCFunction(
|
| - ExternalReference::get_mark_code_as_executed_function(masm->isolate()),
|
| - 2);
|
| - }
|
| - __ Popad();
|
| -
|
| - // Perform prologue operations usually performed by the young code stub.
|
| - __ PopReturnAddressTo(kScratchRegister);
|
| - __ pushq(rbp); // Caller's frame pointer.
|
| - __ movp(rbp, rsp);
|
| - __ Push(rsi); // Callee's context.
|
| - __ Push(rdi); // Callee's JS Function.
|
| - __ PushReturnAddressFrom(kScratchRegister);
|
| -
|
| - // Jump to point after the code-age stub.
|
| - __ ret(0);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_MarkCodeAsExecutedTwice(MacroAssembler* masm) {
|
| - GenerateMakeCodeYoungAgainCommon(masm);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_MarkCodeAsToBeExecutedOnce(MacroAssembler* masm) {
|
| - Generate_MarkCodeAsExecutedOnce(masm);
|
| -}
|
| -
|
| -
|
| -static void Generate_NotifyStubFailureHelper(MacroAssembler* masm,
|
| - SaveFPRegsMode save_doubles) {
|
| - // Enter an internal frame.
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| -
|
| - // Preserve registers across notification, this is important for compiled
|
| - // stubs that tail call the runtime on deopts passing their parameters in
|
| - // registers.
|
| - __ Pushad();
|
| - __ CallRuntime(Runtime::kNotifyStubFailure, save_doubles);
|
| - __ Popad();
|
| - // Tear down internal frame.
|
| - }
|
| -
|
| - __ DropUnderReturnAddress(1); // Ignore state offset
|
| - __ ret(0); // Return to IC Miss stub, continuation still on stack.
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) {
|
| - Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) {
|
| - Generate_NotifyStubFailureHelper(masm, kSaveFPRegs);
|
| -}
|
| -
|
| -
|
| -static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm,
|
| - Deoptimizer::BailoutType type) {
|
| - // Enter an internal frame.
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| -
|
| - // Pass the deoptimization type to the runtime system.
|
| - __ Push(Smi::FromInt(static_cast<int>(type)));
|
| -
|
| - __ CallRuntime(Runtime::kNotifyDeoptimized);
|
| - // Tear down internal frame.
|
| - }
|
| -
|
| - // Get the full codegen state from the stack and untag it.
|
| - __ SmiToInteger32(kScratchRegister, Operand(rsp, kPCOnStackSize));
|
| -
|
| - // Switch on the state.
|
| - Label not_no_registers, not_tos_rax;
|
| - __ cmpp(kScratchRegister,
|
| - Immediate(static_cast<int>(Deoptimizer::BailoutState::NO_REGISTERS)));
|
| - __ j(not_equal, ¬_no_registers, Label::kNear);
|
| - __ ret(1 * kPointerSize); // Remove state.
|
| -
|
| - __ bind(¬_no_registers);
|
| - DCHECK_EQ(kInterpreterAccumulatorRegister.code(), rax.code());
|
| - __ movp(rax, Operand(rsp, kPCOnStackSize + kPointerSize));
|
| - __ cmpp(kScratchRegister,
|
| - Immediate(static_cast<int>(Deoptimizer::BailoutState::TOS_REGISTER)));
|
| - __ j(not_equal, ¬_tos_rax, Label::kNear);
|
| - __ ret(2 * kPointerSize); // Remove state, rax.
|
| -
|
| - __ bind(¬_tos_rax);
|
| - __ Abort(kNoCasesLeft);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) {
|
| - Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_NotifySoftDeoptimized(MacroAssembler* masm) {
|
| - Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::SOFT);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) {
|
| - Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY);
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm,
|
| - int field_index) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : number of arguments
|
| - // -- rdi : function
|
| - // -- rsi : context
|
| - // -- rsp[0] : return address
|
| - // -- rsp[8] : receiver
|
| - // -----------------------------------
|
| -
|
| - // 1. Load receiver into rax and check that it's actually a JSDate object.
|
| - Label receiver_not_date;
|
| - {
|
| - StackArgumentsAccessor args(rsp, 0);
|
| - __ movp(rax, args.GetReceiverOperand());
|
| - __ JumpIfSmi(rax, &receiver_not_date);
|
| - __ CmpObjectType(rax, JS_DATE_TYPE, rbx);
|
| - __ j(not_equal, &receiver_not_date);
|
| - }
|
| -
|
| - // 2. Load the specified date field, falling back to the runtime as necessary.
|
| - if (field_index == JSDate::kDateValue) {
|
| - __ movp(rax, FieldOperand(rax, JSDate::kValueOffset));
|
| - } else {
|
| - if (field_index < JSDate::kFirstUncachedField) {
|
| - Label stamp_mismatch;
|
| - __ Load(rdx, ExternalReference::date_cache_stamp(masm->isolate()));
|
| - __ cmpp(rdx, FieldOperand(rax, JSDate::kCacheStampOffset));
|
| - __ j(not_equal, &stamp_mismatch, Label::kNear);
|
| - __ movp(rax, FieldOperand(
|
| - rax, JSDate::kValueOffset + field_index * kPointerSize));
|
| - __ ret(1 * kPointerSize);
|
| - __ bind(&stamp_mismatch);
|
| - }
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ PrepareCallCFunction(2);
|
| - __ Move(arg_reg_1, rax);
|
| - __ Move(arg_reg_2, Smi::FromInt(field_index));
|
| - __ CallCFunction(
|
| - ExternalReference::get_date_field_function(masm->isolate()), 2);
|
| - }
|
| - __ ret(1 * kPointerSize);
|
| -
|
| - // 3. Raise a TypeError if the receiver is not a date.
|
| - __ bind(&receiver_not_date);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ Move(rbx, Smi::FromInt(0));
|
| - __ EnterBuiltinFrame(rsi, rdi, rbx);
|
| - __ CallRuntime(Runtime::kThrowNotDateError);
|
| - }
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argc
|
| - // -- rsp[0] : return address
|
| - // -- rsp[8] : argArray
|
| - // -- rsp[16] : thisArg
|
| - // -- rsp[24] : receiver
|
| - // -----------------------------------
|
| -
|
| - // 1. Load receiver into rdi, argArray into rax (if present), remove all
|
| - // arguments from the stack (including the receiver), and push thisArg (if
|
| - // present) instead.
|
| - {
|
| - Label no_arg_array, no_this_arg;
|
| - StackArgumentsAccessor args(rsp, rax);
|
| - __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex);
|
| - __ movp(rbx, rdx);
|
| - __ movp(rdi, args.GetReceiverOperand());
|
| - __ testp(rax, rax);
|
| - __ j(zero, &no_this_arg, Label::kNear);
|
| - {
|
| - __ movp(rdx, args.GetArgumentOperand(1));
|
| - __ cmpp(rax, Immediate(1));
|
| - __ j(equal, &no_arg_array, Label::kNear);
|
| - __ movp(rbx, args.GetArgumentOperand(2));
|
| - __ bind(&no_arg_array);
|
| - }
|
| - __ bind(&no_this_arg);
|
| - __ PopReturnAddressTo(rcx);
|
| - __ leap(rsp, Operand(rsp, rax, times_pointer_size, kPointerSize));
|
| - __ Push(rdx);
|
| - __ PushReturnAddressFrom(rcx);
|
| - __ movp(rax, rbx);
|
| - }
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argArray
|
| - // -- rdi : receiver
|
| - // -- rsp[0] : return address
|
| - // -- rsp[8] : thisArg
|
| - // -----------------------------------
|
| -
|
| - // 2. Make sure the receiver is actually callable.
|
| - Label receiver_not_callable;
|
| - __ JumpIfSmi(rdi, &receiver_not_callable, Label::kNear);
|
| - __ movp(rcx, FieldOperand(rdi, HeapObject::kMapOffset));
|
| - __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
|
| - Immediate(1 << Map::kIsCallable));
|
| - __ j(zero, &receiver_not_callable, Label::kNear);
|
| -
|
| - // 3. Tail call with no arguments if argArray is null or undefined.
|
| - Label no_arguments;
|
| - __ JumpIfRoot(rax, Heap::kNullValueRootIndex, &no_arguments, Label::kNear);
|
| - __ JumpIfRoot(rax, Heap::kUndefinedValueRootIndex, &no_arguments,
|
| - Label::kNear);
|
| -
|
| - // 4a. Apply the receiver to the given argArray (passing undefined for
|
| - // new.target).
|
| - __ LoadRoot(rdx, 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. Since we did not create a frame for
|
| - // Function.prototype.apply() yet, we use a normal Call builtin here.
|
| - __ bind(&no_arguments);
|
| - {
|
| - __ Set(rax, 0);
|
| - __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
|
| - }
|
| -
|
| - // 4c. The receiver is not callable, throw an appropriate TypeError.
|
| - __ bind(&receiver_not_callable);
|
| - {
|
| - StackArgumentsAccessor args(rsp, 0);
|
| - __ movp(args.GetReceiverOperand(), rdi);
|
| - __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
|
| - }
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) {
|
| - // Stack Layout:
|
| - // rsp[0] : Return address
|
| - // rsp[8] : Argument n
|
| - // rsp[16] : Argument n-1
|
| - // ...
|
| - // rsp[8 * n] : Argument 1
|
| - // rsp[8 * (n + 1)] : Receiver (callable to call)
|
| - //
|
| - // rax contains the number of arguments, n, not counting the receiver.
|
| - //
|
| - // 1. Make sure we have at least one argument.
|
| - {
|
| - Label done;
|
| - __ testp(rax, rax);
|
| - __ j(not_zero, &done, Label::kNear);
|
| - __ PopReturnAddressTo(rbx);
|
| - __ PushRoot(Heap::kUndefinedValueRootIndex);
|
| - __ PushReturnAddressFrom(rbx);
|
| - __ incp(rax);
|
| - __ bind(&done);
|
| - }
|
| -
|
| - // 2. Get the callable to call (passed as receiver) from the stack.
|
| - {
|
| - StackArgumentsAccessor args(rsp, rax);
|
| - __ movp(rdi, args.GetReceiverOperand());
|
| - }
|
| -
|
| - // 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.
|
| - {
|
| - Label loop;
|
| - __ movp(rcx, rax);
|
| - StackArgumentsAccessor args(rsp, rcx);
|
| - __ bind(&loop);
|
| - __ movp(rbx, args.GetArgumentOperand(1));
|
| - __ movp(args.GetArgumentOperand(0), rbx);
|
| - __ decp(rcx);
|
| - __ j(not_zero, &loop); // While non-zero.
|
| - __ DropUnderReturnAddress(1, rbx); // Drop one slot under return address.
|
| - __ decp(rax); // One fewer argument (first argument is new receiver).
|
| - }
|
| -
|
| - // 4. Call the callable.
|
| - // Since we did not create a frame for Function.prototype.call() yet,
|
| - // we use a normal Call builtin here.
|
| - __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_ReflectApply(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argc
|
| - // -- rsp[0] : return address
|
| - // -- rsp[8] : argumentsList
|
| - // -- rsp[16] : thisArgument
|
| - // -- rsp[24] : target
|
| - // -- rsp[32] : receiver
|
| - // -----------------------------------
|
| -
|
| - // 1. Load target into rdi (if present), argumentsList into rax (if present),
|
| - // remove all arguments from the stack (including the receiver), and push
|
| - // thisArgument (if present) instead.
|
| - {
|
| - Label done;
|
| - StackArgumentsAccessor args(rsp, rax);
|
| - __ LoadRoot(rdi, Heap::kUndefinedValueRootIndex);
|
| - __ movp(rdx, rdi);
|
| - __ movp(rbx, rdi);
|
| - __ cmpp(rax, Immediate(1));
|
| - __ j(below, &done, Label::kNear);
|
| - __ movp(rdi, args.GetArgumentOperand(1)); // target
|
| - __ j(equal, &done, Label::kNear);
|
| - __ movp(rdx, args.GetArgumentOperand(2)); // thisArgument
|
| - __ cmpp(rax, Immediate(3));
|
| - __ j(below, &done, Label::kNear);
|
| - __ movp(rbx, args.GetArgumentOperand(3)); // argumentsList
|
| - __ bind(&done);
|
| - __ PopReturnAddressTo(rcx);
|
| - __ leap(rsp, Operand(rsp, rax, times_pointer_size, kPointerSize));
|
| - __ Push(rdx);
|
| - __ PushReturnAddressFrom(rcx);
|
| - __ movp(rax, rbx);
|
| - }
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argumentsList
|
| - // -- rdi : target
|
| - // -- rsp[0] : return address
|
| - // -- rsp[8] : thisArgument
|
| - // -----------------------------------
|
| -
|
| - // 2. Make sure the target is actually callable.
|
| - Label target_not_callable;
|
| - __ JumpIfSmi(rdi, &target_not_callable, Label::kNear);
|
| - __ movp(rcx, FieldOperand(rdi, HeapObject::kMapOffset));
|
| - __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
|
| - Immediate(1 << Map::kIsCallable));
|
| - __ j(zero, &target_not_callable, Label::kNear);
|
| -
|
| - // 3a. Apply the target to the given argumentsList (passing undefined for
|
| - // new.target).
|
| - __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex);
|
| - __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET);
|
| -
|
| - // 3b. The target is not callable, throw an appropriate TypeError.
|
| - __ bind(&target_not_callable);
|
| - {
|
| - StackArgumentsAccessor args(rsp, 0);
|
| - __ movp(args.GetReceiverOperand(), rdi);
|
| - __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
|
| - }
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argc
|
| - // -- rsp[0] : return address
|
| - // -- rsp[8] : new.target (optional)
|
| - // -- rsp[16] : argumentsList
|
| - // -- rsp[24] : target
|
| - // -- rsp[32] : receiver
|
| - // -----------------------------------
|
| -
|
| - // 1. Load target into rdi (if present), argumentsList into rax (if present),
|
| - // new.target into rdx (if present, otherwise use target), remove all
|
| - // arguments from the stack (including the receiver), and push thisArgument
|
| - // (if present) instead.
|
| - {
|
| - Label done;
|
| - StackArgumentsAccessor args(rsp, rax);
|
| - __ LoadRoot(rdi, Heap::kUndefinedValueRootIndex);
|
| - __ movp(rdx, rdi);
|
| - __ movp(rbx, rdi);
|
| - __ cmpp(rax, Immediate(1));
|
| - __ j(below, &done, Label::kNear);
|
| - __ movp(rdi, args.GetArgumentOperand(1)); // target
|
| - __ movp(rdx, rdi); // new.target defaults to target
|
| - __ j(equal, &done, Label::kNear);
|
| - __ movp(rbx, args.GetArgumentOperand(2)); // argumentsList
|
| - __ cmpp(rax, Immediate(3));
|
| - __ j(below, &done, Label::kNear);
|
| - __ movp(rdx, args.GetArgumentOperand(3)); // new.target
|
| - __ bind(&done);
|
| - __ PopReturnAddressTo(rcx);
|
| - __ leap(rsp, Operand(rsp, rax, times_pointer_size, kPointerSize));
|
| - __ PushRoot(Heap::kUndefinedValueRootIndex);
|
| - __ PushReturnAddressFrom(rcx);
|
| - __ movp(rax, rbx);
|
| - }
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argumentsList
|
| - // -- rdx : new.target
|
| - // -- rdi : target
|
| - // -- rsp[0] : return address
|
| - // -- rsp[8] : receiver (undefined)
|
| - // -----------------------------------
|
| -
|
| - // 2. Make sure the target is actually a constructor.
|
| - Label target_not_constructor;
|
| - __ JumpIfSmi(rdi, &target_not_constructor, Label::kNear);
|
| - __ movp(rcx, FieldOperand(rdi, HeapObject::kMapOffset));
|
| - __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
|
| - Immediate(1 << Map::kIsConstructor));
|
| - __ j(zero, &target_not_constructor, Label::kNear);
|
| -
|
| - // 3. Make sure the target is actually a constructor.
|
| - Label new_target_not_constructor;
|
| - __ JumpIfSmi(rdx, &new_target_not_constructor, Label::kNear);
|
| - __ movp(rcx, FieldOperand(rdx, HeapObject::kMapOffset));
|
| - __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
|
| - Immediate(1 << Map::kIsConstructor));
|
| - __ j(zero, &new_target_not_constructor, Label::kNear);
|
| -
|
| - // 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);
|
| - {
|
| - StackArgumentsAccessor args(rsp, 0);
|
| - __ movp(args.GetReceiverOperand(), rdi);
|
| - __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
|
| - }
|
| -
|
| - // 4c. The new.target is not a constructor, throw an appropriate TypeError.
|
| - __ bind(&new_target_not_constructor);
|
| - {
|
| - StackArgumentsAccessor args(rsp, 0);
|
| - __ movp(args.GetReceiverOperand(), rdx);
|
| - __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
|
| - }
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argc
|
| - // -- rsp[0] : return address
|
| - // -- rsp[8] : last argument
|
| - // -----------------------------------
|
| - Label generic_array_code;
|
| -
|
| - // Get the InternalArray function.
|
| - __ LoadNativeContextSlot(Context::INTERNAL_ARRAY_FUNCTION_INDEX, rdi);
|
| -
|
| - if (FLAG_debug_code) {
|
| - // Initial map for the builtin InternalArray functions should be maps.
|
| - __ movp(rbx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset));
|
| - // Will both indicate a NULL and a Smi.
|
| - STATIC_ASSERT(kSmiTag == 0);
|
| - Condition not_smi = NegateCondition(masm->CheckSmi(rbx));
|
| - __ Check(not_smi, kUnexpectedInitialMapForInternalArrayFunction);
|
| - __ CmpObjectType(rbx, MAP_TYPE, rcx);
|
| - __ Check(equal, kUnexpectedInitialMapForInternalArrayFunction);
|
| - }
|
| -
|
| - // Run the native code for the InternalArray function called as a normal
|
| - // function.
|
| - // tail call a stub
|
| - InternalArrayConstructorStub stub(masm->isolate());
|
| - __ TailCallStub(&stub);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_ArrayCode(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argc
|
| - // -- rsp[0] : return address
|
| - // -- rsp[8] : last argument
|
| - // -----------------------------------
|
| - Label generic_array_code;
|
| -
|
| - // Get the Array function.
|
| - __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, rdi);
|
| -
|
| - if (FLAG_debug_code) {
|
| - // Initial map for the builtin Array functions should be maps.
|
| - __ movp(rbx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset));
|
| - // Will both indicate a NULL and a Smi.
|
| - STATIC_ASSERT(kSmiTag == 0);
|
| - Condition not_smi = NegateCondition(masm->CheckSmi(rbx));
|
| - __ Check(not_smi, kUnexpectedInitialMapForArrayFunction);
|
| - __ CmpObjectType(rbx, MAP_TYPE, rcx);
|
| - __ Check(equal, kUnexpectedInitialMapForArrayFunction);
|
| - }
|
| -
|
| - __ movp(rdx, rdi);
|
| - // Run the native code for the Array function called as a normal function.
|
| - // tail call a stub
|
| - __ LoadRoot(rbx, Heap::kUndefinedValueRootIndex);
|
| - ArrayConstructorStub stub(masm->isolate());
|
| - __ TailCallStub(&stub);
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : number of arguments
|
| - // -- rdi : function
|
| - // -- rsi : context
|
| - // -- rsp[0] : return address
|
| - // -- rsp[(argc - n) * 8] : arg[n] (zero-based)
|
| - // -- rsp[(argc + 1) * 8] : receiver
|
| - // -----------------------------------
|
| - Condition const cc = (kind == MathMaxMinKind::kMin) ? below : above;
|
| - Heap::RootListIndex const root_index =
|
| - (kind == MathMaxMinKind::kMin) ? Heap::kInfinityValueRootIndex
|
| - : Heap::kMinusInfinityValueRootIndex;
|
| - XMMRegister const reg = (kind == MathMaxMinKind::kMin) ? xmm1 : xmm0;
|
| -
|
| - // Load the accumulator with the default return value (either -Infinity or
|
| - // +Infinity), with the tagged value in rdx and the double value in xmm0.
|
| - __ LoadRoot(rdx, root_index);
|
| - __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset));
|
| - __ Move(rcx, rax);
|
| -
|
| - Label done_loop, loop;
|
| - __ bind(&loop);
|
| - {
|
| - // Check if all parameters done.
|
| - __ testp(rcx, rcx);
|
| - __ j(zero, &done_loop);
|
| -
|
| - // Load the next parameter tagged value into rbx.
|
| - __ movp(rbx, Operand(rsp, rcx, times_pointer_size, 0));
|
| -
|
| - // Load the double value of the parameter into xmm1, maybe converting the
|
| - // parameter to a number first using the ToNumber builtin if necessary.
|
| - Label convert, convert_smi, convert_number, done_convert;
|
| - __ bind(&convert);
|
| - __ JumpIfSmi(rbx, &convert_smi);
|
| - __ JumpIfRoot(FieldOperand(rbx, HeapObject::kMapOffset),
|
| - Heap::kHeapNumberMapRootIndex, &convert_number);
|
| - {
|
| - // Parameter is not a Number, use the ToNumber builtin to convert it.
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ Integer32ToSmi(rax, rax);
|
| - __ Integer32ToSmi(rcx, rcx);
|
| - __ EnterBuiltinFrame(rsi, rdi, rax);
|
| - __ Push(rcx);
|
| - __ Push(rdx);
|
| - __ movp(rax, rbx);
|
| - __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
|
| - __ movp(rbx, rax);
|
| - __ Pop(rdx);
|
| - __ Pop(rcx);
|
| - __ LeaveBuiltinFrame(rsi, rdi, rax);
|
| - __ SmiToInteger32(rcx, rcx);
|
| - __ SmiToInteger32(rax, rax);
|
| - {
|
| - // Restore the double accumulator value (xmm0).
|
| - Label restore_smi, done_restore;
|
| - __ JumpIfSmi(rdx, &restore_smi, Label::kNear);
|
| - __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset));
|
| - __ jmp(&done_restore, Label::kNear);
|
| - __ bind(&restore_smi);
|
| - __ SmiToDouble(xmm0, rdx);
|
| - __ bind(&done_restore);
|
| - }
|
| - }
|
| - __ jmp(&convert);
|
| - __ bind(&convert_number);
|
| - __ Movsd(xmm1, FieldOperand(rbx, HeapNumber::kValueOffset));
|
| - __ jmp(&done_convert, Label::kNear);
|
| - __ bind(&convert_smi);
|
| - __ SmiToDouble(xmm1, rbx);
|
| - __ bind(&done_convert);
|
| -
|
| - // Perform the actual comparison with the accumulator value on the left hand
|
| - // side (xmm0) and the next parameter value on the right hand side (xmm1).
|
| - Label compare_equal, compare_nan, compare_swap, done_compare;
|
| - __ Ucomisd(xmm0, xmm1);
|
| - __ j(parity_even, &compare_nan, Label::kNear);
|
| - __ j(cc, &done_compare, Label::kNear);
|
| - __ j(equal, &compare_equal, Label::kNear);
|
| -
|
| - // Result is on the right hand side.
|
| - __ bind(&compare_swap);
|
| - __ Movaps(xmm0, xmm1);
|
| - __ Move(rdx, rbx);
|
| - __ jmp(&done_compare, Label::kNear);
|
| -
|
| - // At least one side is NaN, which means that the result will be NaN too.
|
| - __ bind(&compare_nan);
|
| - __ LoadRoot(rdx, Heap::kNanValueRootIndex);
|
| - __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset));
|
| - __ jmp(&done_compare, Label::kNear);
|
| -
|
| - // Left and right hand side are equal, check for -0 vs. +0.
|
| - __ bind(&compare_equal);
|
| - __ Movmskpd(kScratchRegister, reg);
|
| - __ testl(kScratchRegister, Immediate(1));
|
| - __ j(not_zero, &compare_swap);
|
| -
|
| - __ bind(&done_compare);
|
| - __ decp(rcx);
|
| - __ jmp(&loop);
|
| - }
|
| -
|
| - __ bind(&done_loop);
|
| - __ PopReturnAddressTo(rcx);
|
| - __ leap(rsp, Operand(rsp, rax, times_pointer_size, kPointerSize));
|
| - __ PushReturnAddressFrom(rcx);
|
| - __ movp(rax, rdx);
|
| - __ Ret();
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_NumberConstructor(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : number of arguments
|
| - // -- rdi : constructor function
|
| - // -- rsi : context
|
| - // -- rsp[0] : return address
|
| - // -- rsp[(argc - n) * 8] : arg[n] (zero-based)
|
| - // -- rsp[(argc + 1) * 8] : receiver
|
| - // -----------------------------------
|
| -
|
| - // 1. Load the first argument into rbx.
|
| - Label no_arguments;
|
| - {
|
| - StackArgumentsAccessor args(rsp, rax);
|
| - __ testp(rax, rax);
|
| - __ j(zero, &no_arguments, Label::kNear);
|
| - __ movp(rbx, args.GetArgumentOperand(1));
|
| - }
|
| -
|
| - // 2a. Convert the first argument to a number.
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ Integer32ToSmi(rax, rax);
|
| - __ EnterBuiltinFrame(rsi, rdi, rax);
|
| - __ movp(rax, rbx);
|
| - __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
|
| - __ LeaveBuiltinFrame(rsi, rdi, rbx); // Argc popped to rbx.
|
| - __ SmiToInteger32(rbx, rbx);
|
| - }
|
| -
|
| - {
|
| - // Drop all arguments including the receiver.
|
| - __ PopReturnAddressTo(rcx);
|
| - __ leap(rsp, Operand(rsp, rbx, times_pointer_size, kPointerSize));
|
| - __ PushReturnAddressFrom(rcx);
|
| - __ Ret();
|
| - }
|
| -
|
| - // 2b. No arguments, return +0 (already in rax).
|
| - __ bind(&no_arguments);
|
| - __ ret(1 * kPointerSize);
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : number of arguments
|
| - // -- rdi : constructor function
|
| - // -- rdx : new target
|
| - // -- rsi : context
|
| - // -- rsp[0] : return address
|
| - // -- rsp[(argc - n) * 8] : arg[n] (zero-based)
|
| - // -- rsp[(argc + 1) * 8] : receiver
|
| - // -----------------------------------
|
| -
|
| - // 1. Make sure we operate in the context of the called function.
|
| - __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
|
| -
|
| - // Store argc in r8.
|
| - __ Integer32ToSmi(r8, rax);
|
| -
|
| - // 2. Load the first argument into rbx.
|
| - {
|
| - StackArgumentsAccessor args(rsp, rax);
|
| - Label no_arguments, done;
|
| - __ testp(rax, rax);
|
| - __ j(zero, &no_arguments, Label::kNear);
|
| - __ movp(rbx, args.GetArgumentOperand(1));
|
| - __ jmp(&done, Label::kNear);
|
| - __ bind(&no_arguments);
|
| - __ Move(rbx, Smi::FromInt(0));
|
| - __ bind(&done);
|
| - }
|
| -
|
| - // 3. Make sure rbx is a number.
|
| - {
|
| - Label done_convert;
|
| - __ JumpIfSmi(rbx, &done_convert);
|
| - __ CompareRoot(FieldOperand(rbx, HeapObject::kMapOffset),
|
| - Heap::kHeapNumberMapRootIndex);
|
| - __ j(equal, &done_convert);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ EnterBuiltinFrame(rsi, rdi, r8);
|
| - __ Push(rdx);
|
| - __ Move(rax, rbx);
|
| - __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
|
| - __ Move(rbx, rax);
|
| - __ Pop(rdx);
|
| - __ LeaveBuiltinFrame(rsi, rdi, r8);
|
| - }
|
| - __ bind(&done_convert);
|
| - }
|
| -
|
| - // 4. Check if new target and constructor differ.
|
| - Label drop_frame_and_ret, new_object;
|
| - __ cmpp(rdx, rdi);
|
| - __ j(not_equal, &new_object);
|
| -
|
| - // 5. Allocate a JSValue wrapper for the number.
|
| - __ AllocateJSValue(rax, rdi, rbx, rcx, &new_object);
|
| - __ jmp(&drop_frame_and_ret, Label::kNear);
|
| -
|
| - // 6. Fallback to the runtime to create new object.
|
| - __ bind(&new_object);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ EnterBuiltinFrame(rsi, rdi, r8);
|
| - __ Push(rbx); // the first argument
|
| - FastNewObjectStub stub(masm->isolate());
|
| - __ CallStub(&stub);
|
| - __ Pop(FieldOperand(rax, JSValue::kValueOffset));
|
| - __ LeaveBuiltinFrame(rsi, rdi, r8);
|
| - }
|
| -
|
| - __ bind(&drop_frame_and_ret);
|
| - {
|
| - // Drop all arguments including the receiver.
|
| - __ PopReturnAddressTo(rcx);
|
| - __ SmiToInteger32(r8, r8);
|
| - __ leap(rsp, Operand(rsp, r8, times_pointer_size, kPointerSize));
|
| - __ PushReturnAddressFrom(rcx);
|
| - __ Ret();
|
| - }
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_StringConstructor(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : number of arguments
|
| - // -- rdi : constructor function
|
| - // -- rsi : context
|
| - // -- rsp[0] : return address
|
| - // -- rsp[(argc - n) * 8] : arg[n] (zero-based)
|
| - // -- rsp[(argc + 1) * 8] : receiver
|
| - // -----------------------------------
|
| -
|
| - // 1. Load the first argument into rax.
|
| - Label no_arguments;
|
| - {
|
| - StackArgumentsAccessor args(rsp, rax);
|
| - __ Integer32ToSmi(r8, rax); // Store argc in r8.
|
| - __ testp(rax, rax);
|
| - __ j(zero, &no_arguments, Label::kNear);
|
| - __ movp(rax, args.GetArgumentOperand(1));
|
| - }
|
| -
|
| - // 2a. At least one argument, return rax if it's a string, otherwise
|
| - // dispatch to appropriate conversion.
|
| - Label drop_frame_and_ret, to_string, symbol_descriptive_string;
|
| - {
|
| - __ JumpIfSmi(rax, &to_string, Label::kNear);
|
| - STATIC_ASSERT(FIRST_NONSTRING_TYPE == SYMBOL_TYPE);
|
| - __ CmpObjectType(rax, FIRST_NONSTRING_TYPE, rdx);
|
| - __ j(above, &to_string, Label::kNear);
|
| - __ j(equal, &symbol_descriptive_string, Label::kNear);
|
| - __ jmp(&drop_frame_and_ret, Label::kNear);
|
| - }
|
| -
|
| - // 2b. No arguments, return the empty string (and pop the receiver).
|
| - __ bind(&no_arguments);
|
| - {
|
| - __ LoadRoot(rax, Heap::kempty_stringRootIndex);
|
| - __ ret(1 * kPointerSize);
|
| - }
|
| -
|
| - // 3a. Convert rax to a string.
|
| - __ bind(&to_string);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - ToStringStub stub(masm->isolate());
|
| - __ EnterBuiltinFrame(rsi, rdi, r8);
|
| - __ CallStub(&stub);
|
| - __ LeaveBuiltinFrame(rsi, rdi, r8);
|
| - }
|
| - __ jmp(&drop_frame_and_ret, Label::kNear);
|
| -
|
| - // 3b. Convert symbol in rax to a string.
|
| - __ bind(&symbol_descriptive_string);
|
| - {
|
| - __ PopReturnAddressTo(rcx);
|
| - __ SmiToInteger32(r8, r8);
|
| - __ leap(rsp, Operand(rsp, r8, times_pointer_size, kPointerSize));
|
| - __ Push(rax);
|
| - __ PushReturnAddressFrom(rcx);
|
| - __ TailCallRuntime(Runtime::kSymbolDescriptiveString);
|
| - }
|
| -
|
| - __ bind(&drop_frame_and_ret);
|
| - {
|
| - // Drop all arguments including the receiver.
|
| - __ PopReturnAddressTo(rcx);
|
| - __ SmiToInteger32(r8, r8);
|
| - __ leap(rsp, Operand(rsp, r8, times_pointer_size, kPointerSize));
|
| - __ PushReturnAddressFrom(rcx);
|
| - __ Ret();
|
| - }
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : number of arguments
|
| - // -- rdi : constructor function
|
| - // -- rdx : new target
|
| - // -- rsi : context
|
| - // -- rsp[0] : return address
|
| - // -- rsp[(argc - n) * 8] : arg[n] (zero-based)
|
| - // -- rsp[(argc + 1) * 8] : receiver
|
| - // -----------------------------------
|
| -
|
| - // 1. Make sure we operate in the context of the called function.
|
| - __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
|
| -
|
| - // Store argc in r8.
|
| - __ Integer32ToSmi(r8, rax);
|
| -
|
| - // 2. Load the first argument into rbx.
|
| - {
|
| - StackArgumentsAccessor args(rsp, rax);
|
| - Label no_arguments, done;
|
| - __ testp(rax, rax);
|
| - __ j(zero, &no_arguments, Label::kNear);
|
| - __ movp(rbx, args.GetArgumentOperand(1));
|
| - __ jmp(&done, Label::kNear);
|
| - __ bind(&no_arguments);
|
| - __ LoadRoot(rbx, Heap::kempty_stringRootIndex);
|
| - __ bind(&done);
|
| - }
|
| -
|
| - // 3. Make sure rbx is a string.
|
| - {
|
| - Label convert, done_convert;
|
| - __ JumpIfSmi(rbx, &convert, Label::kNear);
|
| - __ CmpObjectType(rbx, FIRST_NONSTRING_TYPE, rcx);
|
| - __ j(below, &done_convert);
|
| - __ bind(&convert);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - ToStringStub stub(masm->isolate());
|
| - __ EnterBuiltinFrame(rsi, rdi, r8);
|
| - __ Push(rdx);
|
| - __ Move(rax, rbx);
|
| - __ CallStub(&stub);
|
| - __ Move(rbx, rax);
|
| - __ Pop(rdx);
|
| - __ LeaveBuiltinFrame(rsi, rdi, r8);
|
| - }
|
| - __ bind(&done_convert);
|
| - }
|
| -
|
| - // 4. Check if new target and constructor differ.
|
| - Label drop_frame_and_ret, new_object;
|
| - __ cmpp(rdx, rdi);
|
| - __ j(not_equal, &new_object);
|
| -
|
| - // 5. Allocate a JSValue wrapper for the string.
|
| - __ AllocateJSValue(rax, rdi, rbx, rcx, &new_object);
|
| - __ jmp(&drop_frame_and_ret, Label::kNear);
|
| -
|
| - // 6. Fallback to the runtime to create new object.
|
| - __ bind(&new_object);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ EnterBuiltinFrame(rsi, rdi, r8);
|
| - __ Push(rbx); // the first argument
|
| - FastNewObjectStub stub(masm->isolate());
|
| - __ CallStub(&stub);
|
| - __ Pop(FieldOperand(rax, JSValue::kValueOffset));
|
| - __ LeaveBuiltinFrame(rsi, rdi, r8);
|
| - }
|
| -
|
| - __ bind(&drop_frame_and_ret);
|
| - {
|
| - // Drop all arguments including the receiver.
|
| - __ PopReturnAddressTo(rcx);
|
| - __ SmiToInteger32(r8, r8);
|
| - __ leap(rsp, Operand(rsp, r8, times_pointer_size, kPointerSize));
|
| - __ PushReturnAddressFrom(rcx);
|
| - __ Ret();
|
| - }
|
| -}
|
| -
|
| -
|
| -static void ArgumentsAdaptorStackCheck(MacroAssembler* masm,
|
| - Label* stack_overflow) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : actual number of arguments
|
| - // -- rbx : expected number of arguments
|
| - // -- rdx : new target (passed through to callee)
|
| - // -- rdi : function (passed through to callee)
|
| - // -----------------------------------
|
| - // Check the stack for overflow. We are not trying to catch
|
| - // interruptions (e.g. debug break and preemption) here, so the "real stack
|
| - // limit" is checked.
|
| - Label okay;
|
| - __ LoadRoot(r8, Heap::kRealStackLimitRootIndex);
|
| - __ movp(rcx, rsp);
|
| - // Make rcx the space we have left. The stack might already be overflowed
|
| - // here which will cause rcx to become negative.
|
| - __ subp(rcx, r8);
|
| - // Make r8 the space we need for the array when it is unrolled onto the
|
| - // stack.
|
| - __ movp(r8, rbx);
|
| - __ shlp(r8, Immediate(kPointerSizeLog2));
|
| - // Check if the arguments will overflow the stack.
|
| - __ cmpp(rcx, r8);
|
| - __ j(less_equal, stack_overflow); // Signed comparison.
|
| -}
|
| -
|
| -
|
| -static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) {
|
| - __ pushq(rbp);
|
| - __ movp(rbp, rsp);
|
| -
|
| - // Store the arguments adaptor context sentinel.
|
| - __ Push(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
|
| -
|
| - // Push the function on the stack.
|
| - __ Push(rdi);
|
| -
|
| - // Preserve the number of arguments on the stack. Must preserve rax,
|
| - // rbx and rcx because these registers are used when copying the
|
| - // arguments and the receiver.
|
| - __ Integer32ToSmi(r8, rax);
|
| - __ Push(r8);
|
| -}
|
| -
|
| -
|
| -static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) {
|
| - // Retrieve the number of arguments from the stack. Number is a Smi.
|
| - __ movp(rbx, Operand(rbp, ArgumentsAdaptorFrameConstants::kLengthOffset));
|
| -
|
| - // Leave the frame.
|
| - __ movp(rsp, rbp);
|
| - __ popq(rbp);
|
| -
|
| - // Remove caller arguments from the stack.
|
| - __ PopReturnAddressTo(rcx);
|
| - SmiIndex index = masm->SmiToIndex(rbx, rbx, kPointerSizeLog2);
|
| - __ leap(rsp, Operand(rsp, index.reg, index.scale, 1 * kPointerSize));
|
| - __ PushReturnAddressFrom(rcx);
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_AllocateInNewSpace(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rdx : requested object size (untagged)
|
| - // -- rsp[0] : return address
|
| - // -----------------------------------
|
| - __ Integer32ToSmi(rdx, rdx);
|
| - __ PopReturnAddressTo(rcx);
|
| - __ Push(rdx);
|
| - __ PushReturnAddressFrom(rcx);
|
| - __ Move(rsi, Smi::FromInt(0));
|
| - __ TailCallRuntime(Runtime::kAllocateInNewSpace);
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_AllocateInOldSpace(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rdx : requested object size (untagged)
|
| - // -- rsp[0] : return address
|
| - // -----------------------------------
|
| - __ Integer32ToSmi(rdx, rdx);
|
| - __ PopReturnAddressTo(rcx);
|
| - __ Push(rdx);
|
| - __ Push(Smi::FromInt(AllocateTargetSpace::encode(OLD_SPACE)));
|
| - __ PushReturnAddressFrom(rcx);
|
| - __ Move(rsi, Smi::FromInt(0));
|
| - __ TailCallRuntime(Runtime::kAllocateInTargetSpace);
|
| -}
|
| -
|
| -void Builtins::Generate_StringToNumber(MacroAssembler* masm) {
|
| - // The StringToNumber stub takes one argument in rax.
|
| - __ AssertString(rax);
|
| -
|
| - // Check if string has a cached array index.
|
| - Label runtime;
|
| - __ testl(FieldOperand(rax, String::kHashFieldOffset),
|
| - Immediate(String::kContainsCachedArrayIndexMask));
|
| - __ j(not_zero, &runtime, Label::kNear);
|
| - __ movl(rax, FieldOperand(rax, String::kHashFieldOffset));
|
| - __ IndexFromHash(rax, rax);
|
| - __ Ret();
|
| -
|
| - __ bind(&runtime);
|
| - {
|
| - FrameScope frame(masm, StackFrame::INTERNAL);
|
| - // Push argument.
|
| - __ Push(rax);
|
| - // We cannot use a tail call here because this builtin can also be called
|
| - // from wasm.
|
| - __ CallRuntime(Runtime::kStringToNumber);
|
| - }
|
| - __ Ret();
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_ToNumber(MacroAssembler* masm) {
|
| - // The ToNumber stub takes one argument in rax.
|
| - Label not_smi;
|
| - __ JumpIfNotSmi(rax, ¬_smi, Label::kNear);
|
| - __ Ret();
|
| - __ bind(¬_smi);
|
| -
|
| - Label not_heap_number;
|
| - __ CompareRoot(FieldOperand(rax, HeapObject::kMapOffset),
|
| - Heap::kHeapNumberMapRootIndex);
|
| - __ j(not_equal, ¬_heap_number, Label::kNear);
|
| - __ Ret();
|
| - __ bind(¬_heap_number);
|
| -
|
| - __ Jump(masm->isolate()->builtins()->NonNumberToNumber(),
|
| - RelocInfo::CODE_TARGET);
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_NonNumberToNumber(MacroAssembler* masm) {
|
| - // The NonNumberToNumber stub takes one argument in rax.
|
| - __ AssertNotNumber(rax);
|
| -
|
| - Label not_string;
|
| - __ CmpObjectType(rax, FIRST_NONSTRING_TYPE, rdi);
|
| - // rax: object
|
| - // rdi: object map
|
| - __ j(above_equal, ¬_string, Label::kNear);
|
| - __ Jump(masm->isolate()->builtins()->StringToNumber(),
|
| - RelocInfo::CODE_TARGET);
|
| - __ bind(¬_string);
|
| -
|
| - Label not_oddball;
|
| - __ CmpInstanceType(rdi, ODDBALL_TYPE);
|
| - __ j(not_equal, ¬_oddball, Label::kNear);
|
| - __ movp(rax, FieldOperand(rax, Oddball::kToNumberOffset));
|
| - __ Ret();
|
| - __ bind(¬_oddball);
|
| - {
|
| - FrameScope frame(masm, StackFrame::INTERNAL);
|
| - // Push argument.
|
| - __ Push(rax);
|
| - // We cannot use a tail call here because this builtin can also be called
|
| - // from wasm.
|
| - __ CallRuntime(Runtime::kToNumber);
|
| - }
|
| - __ Ret();
|
| -}
|
| -
|
| -void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : actual number of arguments
|
| - // -- rbx : expected number of arguments
|
| - // -- rdx : new target (passed through to callee)
|
| - // -- rdi : function (passed through to callee)
|
| - // -----------------------------------
|
| -
|
| - Label invoke, dont_adapt_arguments, stack_overflow;
|
| - Counters* counters = masm->isolate()->counters();
|
| - __ IncrementCounter(counters->arguments_adaptors(), 1);
|
| -
|
| - Label enough, too_few;
|
| - __ cmpp(rax, rbx);
|
| - __ j(less, &too_few);
|
| - __ cmpp(rbx, Immediate(SharedFunctionInfo::kDontAdaptArgumentsSentinel));
|
| - __ j(equal, &dont_adapt_arguments);
|
| -
|
| - { // Enough parameters: Actual >= expected.
|
| - __ bind(&enough);
|
| - EnterArgumentsAdaptorFrame(masm);
|
| - ArgumentsAdaptorStackCheck(masm, &stack_overflow);
|
| -
|
| - // Copy receiver and all expected arguments.
|
| - const int offset = StandardFrameConstants::kCallerSPOffset;
|
| - __ leap(rax, Operand(rbp, rax, times_pointer_size, offset));
|
| - __ Set(r8, -1); // account for receiver
|
| -
|
| - Label copy;
|
| - __ bind(©);
|
| - __ incp(r8);
|
| - __ Push(Operand(rax, 0));
|
| - __ subp(rax, Immediate(kPointerSize));
|
| - __ cmpp(r8, rbx);
|
| - __ j(less, ©);
|
| - __ jmp(&invoke);
|
| - }
|
| -
|
| - { // Too few parameters: Actual < expected.
|
| - __ bind(&too_few);
|
| -
|
| - EnterArgumentsAdaptorFrame(masm);
|
| - ArgumentsAdaptorStackCheck(masm, &stack_overflow);
|
| -
|
| - // Copy receiver and all actual arguments.
|
| - const int offset = StandardFrameConstants::kCallerSPOffset;
|
| - __ leap(rdi, Operand(rbp, rax, times_pointer_size, offset));
|
| - __ Set(r8, -1); // account for receiver
|
| -
|
| - Label copy;
|
| - __ bind(©);
|
| - __ incp(r8);
|
| - __ Push(Operand(rdi, 0));
|
| - __ subp(rdi, Immediate(kPointerSize));
|
| - __ cmpp(r8, rax);
|
| - __ j(less, ©);
|
| -
|
| - // Fill remaining expected arguments with undefined values.
|
| - Label fill;
|
| - __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex);
|
| - __ bind(&fill);
|
| - __ incp(r8);
|
| - __ Push(kScratchRegister);
|
| - __ cmpp(r8, rbx);
|
| - __ j(less, &fill);
|
| -
|
| - // Restore function pointer.
|
| - __ movp(rdi, Operand(rbp, ArgumentsAdaptorFrameConstants::kFunctionOffset));
|
| - }
|
| -
|
| - // Call the entry point.
|
| - __ bind(&invoke);
|
| - __ movp(rax, rbx);
|
| - // rax : expected number of arguments
|
| - // rdx : new target (passed through to callee)
|
| - // rdi : function (passed through to callee)
|
| - __ movp(rcx, FieldOperand(rdi, JSFunction::kCodeEntryOffset));
|
| - __ call(rcx);
|
| -
|
| - // Store offset of return address for deoptimizer.
|
| - masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset());
|
| -
|
| - // Leave frame and return.
|
| - LeaveArgumentsAdaptorFrame(masm);
|
| - __ ret(0);
|
| -
|
| - // -------------------------------------------
|
| - // Dont adapt arguments.
|
| - // -------------------------------------------
|
| - __ bind(&dont_adapt_arguments);
|
| - __ movp(rcx, FieldOperand(rdi, JSFunction::kCodeEntryOffset));
|
| - __ jmp(rcx);
|
| -
|
| - __ bind(&stack_overflow);
|
| - {
|
| - FrameScope frame(masm, StackFrame::MANUAL);
|
| - __ CallRuntime(Runtime::kThrowStackOverflow);
|
| - __ int3();
|
| - }
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_Apply(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : argumentsList
|
| - // -- rdi : target
|
| - // -- rdx : new.target (checked to be constructor or undefined)
|
| - // -- rsp[0] : return address.
|
| - // -- rsp[8] : thisArgument
|
| - // -----------------------------------
|
| -
|
| - // Create the list of arguments from the array-like argumentsList.
|
| - {
|
| - Label create_arguments, create_array, create_runtime, done_create;
|
| - __ JumpIfSmi(rax, &create_runtime);
|
| -
|
| - // Load the map of argumentsList into rcx.
|
| - __ movp(rcx, FieldOperand(rax, HeapObject::kMapOffset));
|
| -
|
| - // Load native context into rbx.
|
| - __ movp(rbx, NativeContextOperand());
|
| -
|
| - // Check if argumentsList is an (unmodified) arguments object.
|
| - __ cmpp(rcx, ContextOperand(rbx, Context::SLOPPY_ARGUMENTS_MAP_INDEX));
|
| - __ j(equal, &create_arguments);
|
| - __ cmpp(rcx, ContextOperand(rbx, Context::STRICT_ARGUMENTS_MAP_INDEX));
|
| - __ j(equal, &create_arguments);
|
| -
|
| - // Check if argumentsList is a fast JSArray.
|
| - __ CmpInstanceType(rcx, JS_ARRAY_TYPE);
|
| - __ j(equal, &create_array);
|
| -
|
| - // Ask the runtime to create the list (actually a FixedArray).
|
| - __ bind(&create_runtime);
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ Push(rdi);
|
| - __ Push(rdx);
|
| - __ Push(rax);
|
| - __ CallRuntime(Runtime::kCreateListFromArrayLike);
|
| - __ Pop(rdx);
|
| - __ Pop(rdi);
|
| - __ SmiToInteger32(rbx, FieldOperand(rax, FixedArray::kLengthOffset));
|
| - }
|
| - __ jmp(&done_create);
|
| -
|
| - // Try to create the list from an arguments object.
|
| - __ bind(&create_arguments);
|
| - __ movp(rbx, FieldOperand(rax, JSArgumentsObject::kLengthOffset));
|
| - __ movp(rcx, FieldOperand(rax, JSObject::kElementsOffset));
|
| - __ cmpp(rbx, FieldOperand(rcx, FixedArray::kLengthOffset));
|
| - __ j(not_equal, &create_runtime);
|
| - __ SmiToInteger32(rbx, rbx);
|
| - __ movp(rax, rcx);
|
| - __ jmp(&done_create);
|
| -
|
| - // Try to create the list from a JSArray object.
|
| - __ bind(&create_array);
|
| - __ movzxbp(rcx, FieldOperand(rcx, Map::kBitField2Offset));
|
| - __ DecodeField<Map::ElementsKindBits>(rcx);
|
| - STATIC_ASSERT(FAST_SMI_ELEMENTS == 0);
|
| - STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1);
|
| - STATIC_ASSERT(FAST_ELEMENTS == 2);
|
| - __ cmpl(rcx, Immediate(FAST_ELEMENTS));
|
| - __ j(above, &create_runtime);
|
| - __ cmpl(rcx, Immediate(FAST_HOLEY_SMI_ELEMENTS));
|
| - __ j(equal, &create_runtime);
|
| - __ SmiToInteger32(rbx, FieldOperand(rax, JSArray::kLengthOffset));
|
| - __ movp(rax, FieldOperand(rax, JSArray::kElementsOffset));
|
| -
|
| - __ 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(kScratchRegister, Heap::kRealStackLimitRootIndex);
|
| - __ movp(rcx, rsp);
|
| - // Make rcx the space we have left. The stack might already be overflowed
|
| - // here which will cause rcx to become negative.
|
| - __ subp(rcx, kScratchRegister);
|
| - __ sarp(rcx, Immediate(kPointerSizeLog2));
|
| - // Check if the arguments will overflow the stack.
|
| - __ cmpp(rcx, rbx);
|
| - __ j(greater, &done, Label::kNear); // Signed comparison.
|
| - __ TailCallRuntime(Runtime::kThrowStackOverflow);
|
| - __ bind(&done);
|
| - }
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- rdi : target
|
| - // -- rax : args (a FixedArray built from argumentsList)
|
| - // -- rbx : len (number of elements to push from args)
|
| - // -- rdx : new.target (checked to be constructor or undefined)
|
| - // -- rsp[0] : return address.
|
| - // -- rsp[8] : thisArgument
|
| - // -----------------------------------
|
| -
|
| - // Push arguments onto the stack (thisArgument is already on the stack).
|
| - {
|
| - __ PopReturnAddressTo(r8);
|
| - __ Set(rcx, 0);
|
| - Label done, loop;
|
| - __ bind(&loop);
|
| - __ cmpl(rcx, rbx);
|
| - __ j(equal, &done, Label::kNear);
|
| - __ Push(
|
| - FieldOperand(rax, rcx, times_pointer_size, FixedArray::kHeaderSize));
|
| - __ incl(rcx);
|
| - __ jmp(&loop);
|
| - __ bind(&done);
|
| - __ PushReturnAddressFrom(r8);
|
| - __ Move(rax, rcx);
|
| - }
|
| -
|
| - // Dispatch to Call or Construct depending on whether new.target is undefined.
|
| - {
|
| - __ CompareRoot(rdx, Heap::kUndefinedValueRootIndex);
|
| - __ j(equal, masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
|
| - __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
|
| - }
|
| -}
|
| -
|
| -namespace {
|
| -
|
| -// Drops top JavaScript frame and an arguments adaptor frame below it (if
|
| -// present) preserving all the arguments prepared for current call.
|
| -// Does nothing if debugger is currently active.
|
| -// ES6 14.6.3. PrepareForTailCall
|
| -//
|
| -// Stack structure for the function g() tail calling f():
|
| -//
|
| -// ------- Caller frame: -------
|
| -// | ...
|
| -// | g()'s arg M
|
| -// | ...
|
| -// | g()'s arg 1
|
| -// | g()'s receiver arg
|
| -// | g()'s caller pc
|
| -// ------- g()'s frame: -------
|
| -// | g()'s caller fp <- fp
|
| -// | g()'s context
|
| -// | function pointer: g
|
| -// | -------------------------
|
| -// | ...
|
| -// | ...
|
| -// | f()'s arg N
|
| -// | ...
|
| -// | f()'s arg 1
|
| -// | f()'s receiver arg
|
| -// | f()'s caller pc <- sp
|
| -// ----------------------
|
| -//
|
| -void PrepareForTailCall(MacroAssembler* masm, Register args_reg,
|
| - Register scratch1, Register scratch2,
|
| - Register scratch3) {
|
| - DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3));
|
| - Comment cmnt(masm, "[ PrepareForTailCall");
|
| -
|
| - // Prepare for tail call only if ES2015 tail call elimination is active.
|
| - Label done;
|
| - ExternalReference is_tail_call_elimination_enabled =
|
| - ExternalReference::is_tail_call_elimination_enabled_address(
|
| - masm->isolate());
|
| - __ Move(kScratchRegister, is_tail_call_elimination_enabled);
|
| - __ cmpb(Operand(kScratchRegister, 0), Immediate(0));
|
| - __ j(equal, &done);
|
| -
|
| - // Drop possible interpreter handler/stub frame.
|
| - {
|
| - Label no_interpreter_frame;
|
| - __ Cmp(Operand(rbp, CommonFrameConstants::kContextOrFrameTypeOffset),
|
| - Smi::FromInt(StackFrame::STUB));
|
| - __ j(not_equal, &no_interpreter_frame, Label::kNear);
|
| - __ movp(rbp, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
|
| - __ bind(&no_interpreter_frame);
|
| - }
|
| -
|
| - // Check if next frame is an arguments adaptor frame.
|
| - Register caller_args_count_reg = scratch1;
|
| - Label no_arguments_adaptor, formal_parameter_count_loaded;
|
| - __ movp(scratch2, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
|
| - __ Cmp(Operand(scratch2, CommonFrameConstants::kContextOrFrameTypeOffset),
|
| - Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
|
| - __ j(not_equal, &no_arguments_adaptor, Label::kNear);
|
| -
|
| - // Drop current frame and load arguments count from arguments adaptor frame.
|
| - __ movp(rbp, scratch2);
|
| - __ SmiToInteger32(
|
| - caller_args_count_reg,
|
| - Operand(rbp, ArgumentsAdaptorFrameConstants::kLengthOffset));
|
| - __ jmp(&formal_parameter_count_loaded, Label::kNear);
|
| -
|
| - __ bind(&no_arguments_adaptor);
|
| - // Load caller's formal parameter count
|
| - __ movp(scratch1, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
|
| - __ movp(scratch1,
|
| - FieldOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
|
| - __ LoadSharedFunctionInfoSpecialField(
|
| - caller_args_count_reg, scratch1,
|
| - SharedFunctionInfo::kFormalParameterCountOffset);
|
| -
|
| - __ bind(&formal_parameter_count_loaded);
|
| -
|
| - ParameterCount callee_args_count(args_reg);
|
| - __ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
|
| - scratch3, ReturnAddressState::kOnStack);
|
| - __ bind(&done);
|
| -}
|
| -} // namespace
|
| -
|
| -// static
|
| -void Builtins::Generate_CallFunction(MacroAssembler* masm,
|
| - ConvertReceiverMode mode,
|
| - TailCallMode tail_call_mode) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdi : the function to call (checked to be a JSFunction)
|
| - // -----------------------------------
|
| - StackArgumentsAccessor args(rsp, rax);
|
| - __ AssertFunction(rdi);
|
| -
|
| - // ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList)
|
| - // Check that the function is not a "classConstructor".
|
| - Label class_constructor;
|
| - __ movp(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
|
| - __ testb(FieldOperand(rdx, SharedFunctionInfo::kFunctionKindByteOffset),
|
| - Immediate(SharedFunctionInfo::kClassConstructorBitsWithinByte));
|
| - __ j(not_zero, &class_constructor);
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdx : the shared function info.
|
| - // -- rdi : the function to call (checked to be a JSFunction)
|
| - // -----------------------------------
|
| -
|
| - // 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);
|
| - __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
|
| - // We need to convert the receiver for non-native sloppy mode functions.
|
| - Label done_convert;
|
| - __ testb(FieldOperand(rdx, SharedFunctionInfo::kNativeByteOffset),
|
| - Immediate((1 << SharedFunctionInfo::kNativeBitWithinByte) |
|
| - (1 << SharedFunctionInfo::kStrictModeBitWithinByte)));
|
| - __ j(not_zero, &done_convert);
|
| - {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdx : the shared function info.
|
| - // -- rdi : the function to call (checked to be a JSFunction)
|
| - // -- rsi : the function context.
|
| - // -----------------------------------
|
| -
|
| - if (mode == ConvertReceiverMode::kNullOrUndefined) {
|
| - // Patch receiver to global proxy.
|
| - __ LoadGlobalProxy(rcx);
|
| - } else {
|
| - Label convert_to_object, convert_receiver;
|
| - __ movp(rcx, args.GetReceiverOperand());
|
| - __ JumpIfSmi(rcx, &convert_to_object, Label::kNear);
|
| - STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE);
|
| - __ CmpObjectType(rcx, FIRST_JS_RECEIVER_TYPE, rbx);
|
| - __ j(above_equal, &done_convert);
|
| - if (mode != ConvertReceiverMode::kNotNullOrUndefined) {
|
| - Label convert_global_proxy;
|
| - __ JumpIfRoot(rcx, Heap::kUndefinedValueRootIndex,
|
| - &convert_global_proxy, Label::kNear);
|
| - __ JumpIfNotRoot(rcx, Heap::kNullValueRootIndex, &convert_to_object,
|
| - Label::kNear);
|
| - __ bind(&convert_global_proxy);
|
| - {
|
| - // Patch receiver to global proxy.
|
| - __ LoadGlobalProxy(rcx);
|
| - }
|
| - __ jmp(&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);
|
| - __ Integer32ToSmi(rax, rax);
|
| - __ Push(rax);
|
| - __ Push(rdi);
|
| - __ movp(rax, rcx);
|
| - ToObjectStub stub(masm->isolate());
|
| - __ CallStub(&stub);
|
| - __ movp(rcx, rax);
|
| - __ Pop(rdi);
|
| - __ Pop(rax);
|
| - __ SmiToInteger32(rax, rax);
|
| - }
|
| - __ movp(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
|
| - __ bind(&convert_receiver);
|
| - }
|
| - __ movp(args.GetReceiverOperand(), rcx);
|
| - }
|
| - __ bind(&done_convert);
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdx : the shared function info.
|
| - // -- rdi : the function to call (checked to be a JSFunction)
|
| - // -- rsi : the function context.
|
| - // -----------------------------------
|
| -
|
| - if (tail_call_mode == TailCallMode::kAllow) {
|
| - PrepareForTailCall(masm, rax, rbx, rcx, r8);
|
| - }
|
| -
|
| - __ LoadSharedFunctionInfoSpecialField(
|
| - rbx, rdx, SharedFunctionInfo::kFormalParameterCountOffset);
|
| - ParameterCount actual(rax);
|
| - ParameterCount expected(rbx);
|
| -
|
| - __ InvokeFunctionCode(rdi, 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(rdi);
|
| - __ CallRuntime(Runtime::kThrowConstructorNonCallableError);
|
| - }
|
| -}
|
| -
|
| -
|
| -namespace {
|
| -
|
| -void Generate_PushBoundArguments(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdx : new.target (only in case of [[Construct]])
|
| - // -- rdi : target (checked to be a JSBoundFunction)
|
| - // -----------------------------------
|
| -
|
| - // Load [[BoundArguments]] into rcx and length of that into rbx.
|
| - Label no_bound_arguments;
|
| - __ movp(rcx, FieldOperand(rdi, JSBoundFunction::kBoundArgumentsOffset));
|
| - __ SmiToInteger32(rbx, FieldOperand(rcx, FixedArray::kLengthOffset));
|
| - __ testl(rbx, rbx);
|
| - __ j(zero, &no_bound_arguments);
|
| - {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdx : new.target (only in case of [[Construct]])
|
| - // -- rdi : target (checked to be a JSBoundFunction)
|
| - // -- rcx : the [[BoundArguments]] (implemented as FixedArray)
|
| - // -- rbx : the number of [[BoundArguments]] (checked to be non-zero)
|
| - // -----------------------------------
|
| -
|
| - // Reserve stack space for the [[BoundArguments]].
|
| - {
|
| - Label done;
|
| - __ leap(kScratchRegister, Operand(rbx, times_pointer_size, 0));
|
| - __ subp(rsp, kScratchRegister);
|
| - // 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".
|
| - __ CompareRoot(rsp, Heap::kRealStackLimitRootIndex);
|
| - __ j(greater, &done, Label::kNear); // Signed comparison.
|
| - // Restore the stack pointer.
|
| - __ leap(rsp, Operand(rsp, rbx, times_pointer_size, 0));
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ EnterFrame(StackFrame::INTERNAL);
|
| - __ CallRuntime(Runtime::kThrowStackOverflow);
|
| - }
|
| - __ bind(&done);
|
| - }
|
| -
|
| - // Adjust effective number of arguments to include return address.
|
| - __ incl(rax);
|
| -
|
| - // Relocate arguments and return address down the stack.
|
| - {
|
| - Label loop;
|
| - __ Set(rcx, 0);
|
| - __ leap(rbx, Operand(rsp, rbx, times_pointer_size, 0));
|
| - __ bind(&loop);
|
| - __ movp(kScratchRegister, Operand(rbx, rcx, times_pointer_size, 0));
|
| - __ movp(Operand(rsp, rcx, times_pointer_size, 0), kScratchRegister);
|
| - __ incl(rcx);
|
| - __ cmpl(rcx, rax);
|
| - __ j(less, &loop);
|
| - }
|
| -
|
| - // Copy [[BoundArguments]] to the stack (below the arguments).
|
| - {
|
| - Label loop;
|
| - __ movp(rcx, FieldOperand(rdi, JSBoundFunction::kBoundArgumentsOffset));
|
| - __ SmiToInteger32(rbx, FieldOperand(rcx, FixedArray::kLengthOffset));
|
| - __ bind(&loop);
|
| - __ decl(rbx);
|
| - __ movp(kScratchRegister, FieldOperand(rcx, rbx, times_pointer_size,
|
| - FixedArray::kHeaderSize));
|
| - __ movp(Operand(rsp, rax, times_pointer_size, 0), kScratchRegister);
|
| - __ leal(rax, Operand(rax, 1));
|
| - __ j(greater, &loop);
|
| - }
|
| -
|
| - // Adjust effective number of arguments (rax contains the number of
|
| - // arguments from the call plus return address plus the number of
|
| - // [[BoundArguments]]), so we need to subtract one for the return address.
|
| - __ decl(rax);
|
| - }
|
| - __ bind(&no_bound_arguments);
|
| -}
|
| -
|
| -} // namespace
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
|
| - TailCallMode tail_call_mode) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdi : the function to call (checked to be a JSBoundFunction)
|
| - // -----------------------------------
|
| - __ AssertBoundFunction(rdi);
|
| -
|
| - if (tail_call_mode == TailCallMode::kAllow) {
|
| - PrepareForTailCall(masm, rax, rbx, rcx, r8);
|
| - }
|
| -
|
| - // Patch the receiver to [[BoundThis]].
|
| - StackArgumentsAccessor args(rsp, rax);
|
| - __ movp(rbx, FieldOperand(rdi, JSBoundFunction::kBoundThisOffset));
|
| - __ movp(args.GetReceiverOperand(), rbx);
|
| -
|
| - // Push the [[BoundArguments]] onto the stack.
|
| - Generate_PushBoundArguments(masm);
|
| -
|
| - // Call the [[BoundTargetFunction]] via the Call builtin.
|
| - __ movp(rdi, FieldOperand(rdi, JSBoundFunction::kBoundTargetFunctionOffset));
|
| - __ Load(rcx,
|
| - ExternalReference(Builtins::kCall_ReceiverIsAny, masm->isolate()));
|
| - __ leap(rcx, FieldOperand(rcx, Code::kHeaderSize));
|
| - __ jmp(rcx);
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
|
| - TailCallMode tail_call_mode) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdi : the target to call (can be any Object)
|
| - // -----------------------------------
|
| - StackArgumentsAccessor args(rsp, rax);
|
| -
|
| - Label non_callable, non_function, non_smi;
|
| - __ JumpIfSmi(rdi, &non_callable);
|
| - __ bind(&non_smi);
|
| - __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx);
|
| - __ j(equal, masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
|
| - RelocInfo::CODE_TARGET);
|
| - __ CmpInstanceType(rcx, JS_BOUND_FUNCTION_TYPE);
|
| - __ j(equal, masm->isolate()->builtins()->CallBoundFunction(tail_call_mode),
|
| - RelocInfo::CODE_TARGET);
|
| -
|
| - // Check if target has a [[Call]] internal method.
|
| - __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
|
| - Immediate(1 << Map::kIsCallable));
|
| - __ j(zero, &non_callable);
|
| -
|
| - __ CmpInstanceType(rcx, JS_PROXY_TYPE);
|
| - __ j(not_equal, &non_function);
|
| -
|
| - // 0. Prepare for tail call if necessary.
|
| - if (tail_call_mode == TailCallMode::kAllow) {
|
| - PrepareForTailCall(masm, rax, rbx, rcx, r8);
|
| - }
|
| -
|
| - // 1. Runtime fallback for Proxy [[Call]].
|
| - __ PopReturnAddressTo(kScratchRegister);
|
| - __ Push(rdi);
|
| - __ PushReturnAddressFrom(kScratchRegister);
|
| - // Increase the arguments size to include the pushed function and the
|
| - // existing receiver on the stack.
|
| - __ addp(rax, Immediate(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);
|
| - // Overwrite the original receiver with the (original) target.
|
| - __ movp(args.GetReceiverOperand(), rdi);
|
| - // Let the "call_as_function_delegate" take care of the rest.
|
| - __ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, rdi);
|
| - __ Jump(masm->isolate()->builtins()->CallFunction(
|
| - ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode),
|
| - RelocInfo::CODE_TARGET);
|
| -
|
| - // 3. Call to something that is not callable.
|
| - __ bind(&non_callable);
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ Push(rdi);
|
| - __ CallRuntime(Runtime::kThrowCalledNonCallable);
|
| - }
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_ConstructFunction(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdx : the new target (checked to be a constructor)
|
| - // -- rdi : the constructor to call (checked to be a JSFunction)
|
| - // -----------------------------------
|
| - __ AssertFunction(rdi);
|
| -
|
| - // Calling convention for function specific ConstructStubs require
|
| - // rbx to contain either an AllocationSite or undefined.
|
| - __ LoadRoot(rbx, Heap::kUndefinedValueRootIndex);
|
| -
|
| - // Tail call to the function-specific construct stub (still in the caller
|
| - // context at this point).
|
| - __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
|
| - __ movp(rcx, FieldOperand(rcx, SharedFunctionInfo::kConstructStubOffset));
|
| - __ leap(rcx, FieldOperand(rcx, Code::kHeaderSize));
|
| - __ jmp(rcx);
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdx : the new target (checked to be a constructor)
|
| - // -- rdi : the constructor to call (checked to be a JSBoundFunction)
|
| - // -----------------------------------
|
| - __ AssertBoundFunction(rdi);
|
| -
|
| - // Push the [[BoundArguments]] onto the stack.
|
| - Generate_PushBoundArguments(masm);
|
| -
|
| - // Patch new.target to [[BoundTargetFunction]] if new.target equals target.
|
| - {
|
| - Label done;
|
| - __ cmpp(rdi, rdx);
|
| - __ j(not_equal, &done, Label::kNear);
|
| - __ movp(rdx,
|
| - FieldOperand(rdi, JSBoundFunction::kBoundTargetFunctionOffset));
|
| - __ bind(&done);
|
| - }
|
| -
|
| - // Construct the [[BoundTargetFunction]] via the Construct builtin.
|
| - __ movp(rdi, FieldOperand(rdi, JSBoundFunction::kBoundTargetFunctionOffset));
|
| - __ Load(rcx, ExternalReference(Builtins::kConstruct, masm->isolate()));
|
| - __ leap(rcx, FieldOperand(rcx, Code::kHeaderSize));
|
| - __ jmp(rcx);
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_ConstructProxy(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdi : the constructor to call (checked to be a JSProxy)
|
| - // -- rdx : 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]].
|
| - __ PopReturnAddressTo(kScratchRegister);
|
| - __ Push(rdi);
|
| - __ Push(rdx);
|
| - __ PushReturnAddressFrom(kScratchRegister);
|
| - // Include the pushed new_target, constructor and the receiver.
|
| - __ addp(rax, Immediate(3));
|
| - __ JumpToExternalReference(
|
| - ExternalReference(Runtime::kJSProxyConstruct, masm->isolate()));
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_Construct(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : the number of arguments (not including the receiver)
|
| - // -- rdx : the new target (either the same as the constructor or
|
| - // the JSFunction on which new was invoked initially)
|
| - // -- rdi : the constructor to call (can be any Object)
|
| - // -----------------------------------
|
| - StackArgumentsAccessor args(rsp, rax);
|
| -
|
| - // Check if target is a Smi.
|
| - Label non_constructor;
|
| - __ JumpIfSmi(rdi, &non_constructor, Label::kNear);
|
| -
|
| - // Dispatch based on instance type.
|
| - __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx);
|
| - __ j(equal, masm->isolate()->builtins()->ConstructFunction(),
|
| - RelocInfo::CODE_TARGET);
|
| -
|
| - // Check if target has a [[Construct]] internal method.
|
| - __ testb(FieldOperand(rcx, Map::kBitFieldOffset),
|
| - Immediate(1 << Map::kIsConstructor));
|
| - __ j(zero, &non_constructor, Label::kNear);
|
| -
|
| - // Only dispatch to bound functions after checking whether they are
|
| - // constructors.
|
| - __ CmpInstanceType(rcx, JS_BOUND_FUNCTION_TYPE);
|
| - __ j(equal, masm->isolate()->builtins()->ConstructBoundFunction(),
|
| - RelocInfo::CODE_TARGET);
|
| -
|
| - // Only dispatch to proxies after checking whether they are constructors.
|
| - __ CmpInstanceType(rcx, JS_PROXY_TYPE);
|
| - __ j(equal, masm->isolate()->builtins()->ConstructProxy(),
|
| - RelocInfo::CODE_TARGET);
|
| -
|
| - // Called Construct on an exotic Object with a [[Construct]] internal method.
|
| - {
|
| - // Overwrite the original receiver with the (original) target.
|
| - __ movp(args.GetReceiverOperand(), rdi);
|
| - // Let the "call_as_constructor_delegate" take care of the rest.
|
| - __ LoadNativeContextSlot(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, rdi);
|
| - __ 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);
|
| -}
|
| -
|
| -
|
| -static void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver,
|
| - Register function_template_info,
|
| - Register scratch0, Register scratch1,
|
| - Register scratch2,
|
| - Label* receiver_check_failed) {
|
| - Register signature = scratch0;
|
| - Register map = scratch1;
|
| - Register constructor = scratch2;
|
| -
|
| - // If there is no signature, return the holder.
|
| - __ movp(signature, FieldOperand(function_template_info,
|
| - FunctionTemplateInfo::kSignatureOffset));
|
| - __ CompareRoot(signature, Heap::kUndefinedValueRootIndex);
|
| - Label receiver_check_passed;
|
| - __ j(equal, &receiver_check_passed, Label::kNear);
|
| -
|
| - // Walk the prototype chain.
|
| - __ movp(map, FieldOperand(receiver, HeapObject::kMapOffset));
|
| - Label prototype_loop_start;
|
| - __ bind(&prototype_loop_start);
|
| -
|
| - // Get the constructor, if any.
|
| - __ GetMapConstructor(constructor, map, kScratchRegister);
|
| - __ CmpInstanceType(kScratchRegister, JS_FUNCTION_TYPE);
|
| - Label next_prototype;
|
| - __ j(not_equal, &next_prototype, Label::kNear);
|
| -
|
| - // Get the constructor's signature.
|
| - Register type = constructor;
|
| - __ movp(type,
|
| - FieldOperand(constructor, JSFunction::kSharedFunctionInfoOffset));
|
| - __ movp(type, FieldOperand(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.
|
| - __ cmpp(signature, type);
|
| - __ j(equal, &receiver_check_passed, Label::kNear);
|
| -
|
| - // If the current type is not a FunctionTemplateInfo, load the next prototype
|
| - // in the chain.
|
| - __ JumpIfSmi(type, &next_prototype, Label::kNear);
|
| - __ CmpObjectType(type, FUNCTION_TEMPLATE_INFO_TYPE, kScratchRegister);
|
| - __ j(not_equal, &next_prototype, Label::kNear);
|
| -
|
| - // Otherwise load the parent function template and iterate.
|
| - __ movp(type,
|
| - FieldOperand(type, FunctionTemplateInfo::kParentTemplateOffset));
|
| - __ jmp(&function_template_loop, Label::kNear);
|
| -
|
| - // Load the next prototype.
|
| - __ bind(&next_prototype);
|
| - __ testq(FieldOperand(map, Map::kBitField3Offset),
|
| - Immediate(Map::HasHiddenPrototype::kMask));
|
| - __ j(zero, receiver_check_failed);
|
| - __ movp(receiver, FieldOperand(map, Map::kPrototypeOffset));
|
| - __ movp(map, FieldOperand(receiver, HeapObject::kMapOffset));
|
| - // Iterate.
|
| - __ jmp(&prototype_loop_start, Label::kNear);
|
| -
|
| - __ bind(&receiver_check_passed);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_HandleFastApiCall(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- rax : number of arguments (not including the receiver)
|
| - // -- rdi : callee
|
| - // -- rsi : context
|
| - // -- rsp[0] : return address
|
| - // -- rsp[8] : last argument
|
| - // -- ...
|
| - // -- rsp[rax * 8] : first argument
|
| - // -- rsp[(rax + 1) * 8] : receiver
|
| - // -----------------------------------
|
| -
|
| - StackArgumentsAccessor args(rsp, rax);
|
| -
|
| - // Load the FunctionTemplateInfo.
|
| - __ movp(rbx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset));
|
| - __ movp(rbx, FieldOperand(rbx, SharedFunctionInfo::kFunctionDataOffset));
|
| -
|
| - // Do the compatible receiver check.
|
| - Label receiver_check_failed;
|
| - __ movp(rcx, args.GetReceiverOperand());
|
| - CompatibleReceiverCheck(masm, rcx, rbx, rdx, r8, r9, &receiver_check_failed);
|
| -
|
| - // Get the callback offset from the FunctionTemplateInfo, and jump to the
|
| - // beginning of the code.
|
| - __ movp(rdx, FieldOperand(rbx, FunctionTemplateInfo::kCallCodeOffset));
|
| - __ movp(rdx, FieldOperand(rdx, CallHandlerInfo::kFastHandlerOffset));
|
| - __ addp(rdx, Immediate(Code::kHeaderSize - kHeapObjectTag));
|
| - __ jmp(rdx);
|
| -
|
| - // Compatible receiver check failed: pop return address, arguments and
|
| - // receiver and throw an Illegal Invocation exception.
|
| - __ bind(&receiver_check_failed);
|
| - __ PopReturnAddressTo(rbx);
|
| - __ leap(rax, Operand(rax, times_pointer_size, 1 * kPointerSize));
|
| - __ addp(rsp, rax);
|
| - __ PushReturnAddressFrom(rbx);
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ TailCallRuntime(Runtime::kThrowIllegalInvocation);
|
| - }
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) {
|
| - // Lookup the function in the JavaScript frame.
|
| - __ movp(rax, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - // Pass function as argument.
|
| - __ Push(rax);
|
| - __ CallRuntime(Runtime::kCompileForOnStackReplacement);
|
| - }
|
| -
|
| - Label skip;
|
| - // If the code object is null, just return to the unoptimized code.
|
| - __ cmpp(rax, Immediate(0));
|
| - __ j(not_equal, &skip, Label::kNear);
|
| - __ ret(0);
|
| -
|
| - __ bind(&skip);
|
| -
|
| - // Load deoptimization data from the code object.
|
| - __ movp(rbx, Operand(rax, Code::kDeoptimizationDataOffset - kHeapObjectTag));
|
| -
|
| - // Load the OSR entrypoint offset from the deoptimization data.
|
| - __ SmiToInteger32(rbx, Operand(rbx, FixedArray::OffsetOfElementAt(
|
| - DeoptimizationInputData::kOsrPcOffsetIndex) - kHeapObjectTag));
|
| -
|
| - // Compute the target address = code_obj + header_size + osr_offset
|
| - __ leap(rax, Operand(rax, rbx, times_1, Code::kHeaderSize - kHeapObjectTag));
|
| -
|
| - // Overwrite the return address on the stack.
|
| - __ movq(StackOperandForReturnAddress(0), rax);
|
| -
|
| - // And "return" to the OSR entry point of the function.
|
| - __ ret(0);
|
| -}
|
| -
|
| -
|
| -#undef __
|
| -
|
| -} // namespace internal
|
| -} // namespace v8
|
| -
|
| -#endif // V8_TARGET_ARCH_X64
|
|
|
Chromium Code Reviews
Issue 2145023002:
[builtins] move builtin files to src/builtins/. (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master