Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(448)

Unified Diff: src/ia32/builtins-ia32.cc

Issue 2145023002: [builtins] move builtin files to src/builtins/. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: rebase Created 4 years, 5 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
« no previous file with comments | « src/counters.h ('k') | src/interpreter/interpreter.h » ('j') | no next file with comments »
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: src/ia32/builtins-ia32.cc
diff --git a/src/ia32/builtins-ia32.cc b/src/ia32/builtins-ia32.cc
deleted file mode 100644
index 9037489aa8bf53702856dbcf5415220d3b1e352c..0000000000000000000000000000000000000000
--- a/src/ia32/builtins-ia32.cc
+++ /dev/null
@@ -1,3093 +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_IA32
-
-#include "src/code-factory.h"
-#include "src/codegen.h"
-#include "src/deoptimizer.h"
-#include "src/full-codegen/full-codegen.h"
-#include "src/ia32/frames-ia32.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 -------------
- // -- eax : number of arguments excluding receiver
- // -- edi : target
- // -- edx : new.target
- // -- esp[0] : return address
- // -- esp[4] : last argument
- // -- ...
- // -- esp[4 * argc] : first argument
- // -- esp[4 * (argc +1)] : receiver
- // -----------------------------------
- __ AssertFunction(edi);
-
- // 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).
- __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset));
-
- // JumpToExternalReference expects eax to contain the number of arguments
- // including the receiver and the extra arguments.
- const int num_extra_args = 3;
- __ add(eax, Immediate(num_extra_args + 1));
-
- // Insert extra arguments.
- __ PopReturnAddressTo(ecx);
- __ SmiTag(eax);
- __ Push(eax);
- __ SmiUntag(eax);
- __ Push(edi);
- __ Push(edx);
- __ PushReturnAddressFrom(ecx);
-
- __ JumpToExternalReference(ExternalReference(id, masm->isolate()),
- exit_frame_type == BUILTIN_EXIT);
-}
-
-static void GenerateTailCallToReturnedCode(MacroAssembler* masm,
- Runtime::FunctionId function_id) {
- // ----------- S t a t e -------------
- // -- eax : argument count (preserved for callee)
- // -- edx : new target (preserved for callee)
- // -- edi : target function (preserved for callee)
- // -----------------------------------
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
- // Push the number of arguments to the callee.
- __ SmiTag(eax);
- __ push(eax);
- // Push a copy of the target function and the new target.
- __ push(edi);
- __ push(edx);
- // Function is also the parameter to the runtime call.
- __ push(edi);
-
- __ CallRuntime(function_id, 1);
- __ mov(ebx, eax);
-
- // Restore target function and new target.
- __ pop(edx);
- __ pop(edi);
- __ pop(eax);
- __ SmiUntag(eax);
- }
-
- __ lea(ebx, FieldOperand(ebx, Code::kHeaderSize));
- __ jmp(ebx);
-}
-
-static void GenerateTailCallToSharedCode(MacroAssembler* masm) {
- __ mov(ebx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- __ mov(ebx, FieldOperand(ebx, SharedFunctionInfo::kCodeOffset));
- __ lea(ebx, FieldOperand(ebx, Code::kHeaderSize));
- __ jmp(ebx);
-}
-
-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;
- ExternalReference stack_limit =
- ExternalReference::address_of_stack_limit(masm->isolate());
- __ cmp(esp, Operand::StaticVariable(stack_limit));
- __ j(above_equal, &ok, Label::kNear);
-
- 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 -------------
- // -- eax: number of arguments
- // -- esi: context
- // -- edi: constructor function
- // -- ebx: allocation site or undefined
- // -- edx: new target
- // -----------------------------------
-
- // Enter a construct frame.
- {
- FrameScope scope(masm, StackFrame::CONSTRUCT);
-
- // Preserve the incoming parameters on the stack.
- __ AssertUndefinedOrAllocationSite(ebx);
- __ push(esi);
- __ push(ebx);
- __ SmiTag(eax);
- __ push(eax);
-
- if (create_implicit_receiver) {
- // Allocate the new receiver object.
- __ Push(edi);
- __ Push(edx);
- FastNewObjectStub stub(masm->isolate());
- __ CallStub(&stub);
- __ mov(ebx, eax);
- __ Pop(edx);
- __ Pop(edi);
-
- // ----------- S t a t e -------------
- // -- edi: constructor function
- // -- ebx: newly allocated object
- // -- edx: new target
- // -----------------------------------
-
- // Retrieve smi-tagged arguments count from the stack.
- __ mov(eax, Operand(esp, 0));
- }
-
- __ SmiUntag(eax);
-
- 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(ebx);
- __ push(ebx);
- } else {
- __ PushRoot(Heap::kTheHoleValueRootIndex);
- }
-
- // Set up pointer to last argument.
- __ lea(ebx, Operand(ebp, StandardFrameConstants::kCallerSPOffset));
-
- // Copy arguments and receiver to the expression stack.
- Label loop, entry;
- __ mov(ecx, eax);
- __ jmp(&entry);
- __ bind(&loop);
- __ push(Operand(ebx, ecx, times_4, 0));
- __ bind(&entry);
- __ dec(ecx);
- __ j(greater_equal, &loop);
-
- // Call the function.
- ParameterCount actual(eax);
- __ InvokeFunction(edi, edx, 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.
- __ mov(esi, Operand(ebp, 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.
- Label use_receiver, exit;
-
- // If the result is a smi, it is *not* an object in the ECMA sense.
- __ JumpIfSmi(eax, &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.
- __ CmpObjectType(eax, FIRST_JS_RECEIVER_TYPE, ecx);
- __ j(above_equal, &exit);
-
- // Throw away the result of the constructor invocation and use the
- // on-stack receiver as the result.
- __ bind(&use_receiver);
- __ mov(eax, Operand(esp, 0));
-
- // Restore the arguments count and leave the construct frame. The
- // arguments count is stored below the receiver.
- __ bind(&exit);
- __ mov(ebx, Operand(esp, 1 * kPointerSize));
- } else {
- __ mov(ebx, Operand(esp, 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(eax, &dont_throw);
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ CallRuntime(Runtime::kThrowDerivedConstructorReturnedNonObject);
- }
- __ bind(&dont_throw);
- }
-
- // Remove caller arguments from the stack and return.
- STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0);
- __ pop(ecx);
- __ lea(esp, Operand(esp, ebx, times_2, 1 * kPointerSize)); // 1 ~ receiver
- __ push(ecx);
- if (create_implicit_receiver) {
- __ IncrementCounter(masm->isolate()->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(edi);
- __ CallRuntime(Runtime::kThrowConstructedNonConstructable);
-}
-
-
-enum IsTagged { kEaxIsSmiTagged, kEaxIsUntaggedInt };
-
-
-// Clobbers ecx, edx, edi; preserves all other registers.
-static void Generate_CheckStackOverflow(MacroAssembler* masm,
- IsTagged eax_is_tagged) {
- // eax : 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;
- ExternalReference real_stack_limit =
- ExternalReference::address_of_real_stack_limit(masm->isolate());
- __ mov(edi, Operand::StaticVariable(real_stack_limit));
- // Make ecx the space we have left. The stack might already be overflowed
- // here which will cause ecx to become negative.
- __ mov(ecx, esp);
- __ sub(ecx, edi);
- // Make edx the space we need for the array when it is unrolled onto the
- // stack.
- __ mov(edx, eax);
- int smi_tag = eax_is_tagged == kEaxIsSmiTagged ? kSmiTagSize : 0;
- __ shl(edx, kPointerSizeLog2 - smi_tag);
- // Check if the arguments will overflow the stack.
- __ cmp(ecx, edx);
- __ 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);
-
- {
- 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());
- __ mov(esi, Operand::StaticVariable(context_address));
-
- // Load the previous frame pointer (ebx) to access C arguments
- __ mov(ebx, Operand(ebp, 0));
-
- // Push the function and the receiver onto the stack.
- __ push(Operand(ebx, EntryFrameConstants::kFunctionArgOffset));
- __ push(Operand(ebx, EntryFrameConstants::kReceiverArgOffset));
-
- // Load the number of arguments and setup pointer to the arguments.
- __ mov(eax, Operand(ebx, EntryFrameConstants::kArgcOffset));
- __ mov(ebx, Operand(ebx, EntryFrameConstants::kArgvOffset));
-
- // Check if we have enough stack space to push all arguments.
- // Expects argument count in eax. Clobbers ecx, edx, edi.
- Generate_CheckStackOverflow(masm, kEaxIsUntaggedInt);
-
- // Copy arguments to the stack in a loop.
- Label loop, entry;
- __ Move(ecx, Immediate(0));
- __ jmp(&entry, Label::kNear);
- __ bind(&loop);
- __ mov(edx, Operand(ebx, ecx, times_4, 0)); // push parameter from argv
- __ push(Operand(edx, 0)); // dereference handle
- __ inc(ecx);
- __ bind(&entry);
- __ cmp(ecx, eax);
- __ j(not_equal, &loop);
-
- // Load the previous frame pointer (ebx) to access C arguments
- __ mov(ebx, Operand(ebp, 0));
-
- // Get the new.target and function from the frame.
- __ mov(edx, Operand(ebx, EntryFrameConstants::kNewTargetArgOffset));
- __ mov(edi, Operand(ebx, EntryFrameConstants::kFunctionArgOffset));
-
- // Invoke the 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.
- }
- __ ret(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 -------------
- // -- eax : the value to pass to the generator
- // -- ebx : the JSGeneratorObject to resume
- // -- edx : the resume mode (tagged)
- // -- esp[0] : return address
- // -----------------------------------
- __ AssertGeneratorObject(ebx);
-
- // Store input value into generator object.
- __ mov(FieldOperand(ebx, JSGeneratorObject::kInputOrDebugPosOffset), eax);
- __ RecordWriteField(ebx, JSGeneratorObject::kInputOrDebugPosOffset, eax, ecx,
- kDontSaveFPRegs);
-
- // Store resume mode into generator object.
- __ mov(FieldOperand(ebx, JSGeneratorObject::kResumeModeOffset), edx);
-
- // Load suspended function and context.
- __ mov(esi, FieldOperand(ebx, JSGeneratorObject::kContextOffset));
- __ mov(edi, FieldOperand(ebx, 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());
- STATIC_ASSERT(StepFrame > StepIn);
- __ cmpb(Operand::StaticVariable(last_step_action), 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());
- __ cmp(ebx, Operand::StaticVariable(debug_suspended_generator));
- __ j(equal, &prepare_step_in_suspended_generator);
- __ bind(&stepping_prepared);
-
- // Pop return address.
- __ PopReturnAddressTo(eax);
-
- // Push receiver.
- __ Push(FieldOperand(ebx, JSGeneratorObject::kReceiverOffset));
-
- // ----------- S t a t e -------------
- // -- eax : return address
- // -- ebx : the JSGeneratorObject to resume
- // -- edx : the resume mode (tagged)
- // -- edi : generator function
- // -- esi : generator context
- // -- esp[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.
- __ mov(ecx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- __ mov(ecx,
- FieldOperand(ecx, SharedFunctionInfo::kFormalParameterCountOffset));
- {
- Label done_loop, loop;
- __ bind(&loop);
- __ sub(ecx, Immediate(Smi::FromInt(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;
- __ mov(ecx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- __ mov(ecx, FieldOperand(ecx, SharedFunctionInfo::kFunctionDataOffset));
- __ CmpObjectType(ecx, BYTECODE_ARRAY_TYPE, ecx);
- __ j(not_equal, &old_generator);
-
- // New-style (ignition/turbofan) generator object
- {
- __ PushReturnAddressFrom(eax);
- __ mov(eax, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- __ mov(eax,
- FieldOperand(ecx, 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.
- __ mov(edx, ebx);
- __ jmp(FieldOperand(edi, 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(eax); // Return address.
- __ Push(ebp); // Caller's frame pointer.
- __ Move(ebp, esp);
- __ Push(esi); // Callee's context.
- __ Push(edi); // Callee's JS Function.
-
- // Restore the operand stack.
- __ mov(eax, FieldOperand(ebx, JSGeneratorObject::kOperandStackOffset));
- {
- Label done_loop, loop;
- __ Move(ecx, Smi::FromInt(0));
- __ bind(&loop);
- __ cmp(ecx, FieldOperand(eax, FixedArray::kLengthOffset));
- __ j(equal, &done_loop, Label::kNear);
- __ Push(FieldOperand(eax, ecx, times_half_pointer_size,
- FixedArray::kHeaderSize));
- __ add(ecx, Immediate(Smi::FromInt(1)));
- __ jmp(&loop);
- __ bind(&done_loop);
- }
-
- // Reset operand stack so we don't leak.
- __ mov(FieldOperand(ebx, JSGeneratorObject::kOperandStackOffset),
- Immediate(masm->isolate()->factory()->empty_fixed_array()));
-
- // Resume the generator function at the continuation.
- __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- __ mov(edx, FieldOperand(edx, SharedFunctionInfo::kCodeOffset));
- __ mov(ecx, FieldOperand(ebx, JSGeneratorObject::kContinuationOffset));
- __ SmiUntag(ecx);
- __ lea(edx, FieldOperand(edx, ecx, times_1, Code::kHeaderSize));
- __ mov(FieldOperand(ebx, JSGeneratorObject::kContinuationOffset),
- Immediate(Smi::FromInt(JSGeneratorObject::kGeneratorExecuting)));
- __ mov(eax, ebx); // Continuation expects generator object in eax.
- __ jmp(edx);
- }
-
- __ bind(&prepare_step_in_if_stepping);
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ Push(ebx);
- __ Push(edx);
- __ Push(edi);
- __ CallRuntime(Runtime::kDebugPrepareStepInIfStepping);
- __ Pop(edx);
- __ Pop(ebx);
- __ mov(edi, FieldOperand(ebx, JSGeneratorObject::kFunctionOffset));
- }
- __ jmp(&stepping_prepared);
-
- __ bind(&prepare_step_in_suspended_generator);
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ Push(ebx);
- __ Push(edx);
- __ CallRuntime(Runtime::kDebugPrepareStepInSuspendedGenerator);
- __ Pop(edx);
- __ Pop(ebx);
- __ mov(edi, FieldOperand(ebx, 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 + reciever count.
- __ mov(args_count,
- Operand(ebp, InterpreterFrameConstants::kBytecodeArrayFromFp));
- __ mov(args_count,
- FieldOperand(args_count, BytecodeArray::kParameterSizeOffset));
-
- // Leave the frame (also dropping the register file).
- __ leave();
-
- // Drop receiver + arguments.
- __ pop(return_pc);
- __ add(esp, args_count);
- __ push(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 edi: the JS function object being called
-// o edx: the new target
-// o esi: our context
-// o ebp: the caller's frame pointer
-// o esp: 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);
- __ push(ebp); // Caller's frame pointer.
- __ mov(ebp, esp);
- __ push(esi); // Callee's context.
- __ push(edi); // Callee's JS function.
- __ push(edx); // 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.
- __ mov(eax, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- Label load_debug_bytecode_array, bytecode_array_loaded;
- __ cmp(FieldOperand(eax, SharedFunctionInfo::kDebugInfoOffset),
- Immediate(DebugInfo::uninitialized()));
- __ j(not_equal, &load_debug_bytecode_array);
- __ mov(kInterpreterBytecodeArrayRegister,
- FieldOperand(eax, 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,
- eax);
- __ Assert(equal, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
- }
-
- // Push bytecode array.
- __ push(kInterpreterBytecodeArrayRegister);
- // Push Smi tagged initial bytecode array offset.
- __ push(Immediate(Smi::FromInt(BytecodeArray::kHeaderSize - kHeapObjectTag)));
-
- // Allocate the local and temporary register file on the stack.
- {
- // Load frame size from the BytecodeArray object.
- __ mov(ebx, FieldOperand(kInterpreterBytecodeArrayRegister,
- BytecodeArray::kFrameSizeOffset));
-
- // Do a stack check to ensure we don't go over the limit.
- Label ok;
- __ mov(ecx, esp);
- __ sub(ecx, ebx);
- ExternalReference stack_limit =
- ExternalReference::address_of_real_stack_limit(masm->isolate());
- __ cmp(ecx, Operand::StaticVariable(stack_limit));
- __ j(above_equal, &ok);
- __ CallRuntime(Runtime::kThrowStackOverflow);
- __ bind(&ok);
-
- // If ok, push undefined as the initial value for all register file entries.
- Label loop_header;
- Label loop_check;
- __ mov(eax, Immediate(masm->isolate()->factory()->undefined_value()));
- __ jmp(&loop_check);
- __ bind(&loop_header);
- // TODO(rmcilroy): Consider doing more than one push per loop iteration.
- __ push(eax);
- // Continue loop if not done.
- __ bind(&loop_check);
- __ sub(ebx, Immediate(kPointerSize));
- __ j(greater_equal, &loop_header);
- }
-
- // Load accumulator, bytecode offset and dispatch table into registers.
- __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex);
- __ mov(kInterpreterBytecodeOffsetRegister,
- Immediate(BytecodeArray::kHeaderSize - kHeapObjectTag));
- __ mov(kInterpreterDispatchTableRegister,
- Immediate(ExternalReference::interpreter_dispatch_table_address(
- masm->isolate())));
-
- // Dispatch to the first bytecode handler for the function.
- __ movzx_b(ebx, Operand(kInterpreterBytecodeArrayRegister,
- kInterpreterBytecodeOffsetRegister, times_1, 0));
- __ mov(ebx, Operand(kInterpreterDispatchTableRegister, ebx,
- times_pointer_size, 0));
- __ call(ebx);
- masm->isolate()->heap()->SetInterpreterEntryReturnPCOffset(masm->pc_offset());
-
- // The return value is in eax.
- LeaveInterpreterFrame(masm, ebx, ecx);
- __ ret(0);
-
- // Load debug copy of the bytecode array.
- __ bind(&load_debug_bytecode_array);
- Register debug_info = kInterpreterBytecodeArrayRegister;
- __ mov(debug_info, FieldOperand(eax, SharedFunctionInfo::kDebugInfoOffset));
- __ mov(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);
- __ pop(edx); // Callee's new target.
- __ pop(edi); // Callee's JS function.
- __ pop(esi); // Callee's context.
- __ leave(); // Leave the frame so we can tail call.
- __ mov(ecx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- __ mov(ecx, FieldOperand(ecx, SharedFunctionInfo::kCodeOffset));
- __ lea(ecx, FieldOperand(ecx, Code::kHeaderSize));
- __ mov(FieldOperand(edi, JSFunction::kCodeEntryOffset), ecx);
- __ RecordWriteCodeEntryField(edi, ecx, ebx);
- __ jmp(ecx);
-}
-
-void Builtins::Generate_InterpreterMarkBaselineOnReturn(MacroAssembler* masm) {
- // Save the function and context for call to CompileBaseline.
- __ mov(edi, Operand(ebp, StandardFrameConstants::kFunctionOffset));
- __ mov(kContextRegister,
- Operand(ebp, StandardFrameConstants::kContextOffset));
-
- // Leave the frame before recompiling for baseline so that we don't count as
- // an activation on the stack.
- LeaveInterpreterFrame(masm, ebx, ecx);
-
- {
- FrameScope frame_scope(masm, StackFrame::INTERNAL);
- // Push return value.
- __ push(eax);
-
- // Push function as argument and compile for baseline.
- __ push(edi);
- __ CallRuntime(Runtime::kCompileBaseline);
-
- // Restore return value.
- __ pop(eax);
- }
- __ ret(0);
-}
-
-static void Generate_InterpreterPushArgs(MacroAssembler* masm,
- Register array_limit) {
- // ----------- S t a t e -------------
- // -- ebx : Pointer to the last argument in the args array.
- // -- array_limit : Pointer to one before the first argument in the
- // args array.
- // -----------------------------------
- Label loop_header, loop_check;
- __ jmp(&loop_check);
- __ bind(&loop_header);
- __ Push(Operand(ebx, 0));
- __ sub(ebx, Immediate(kPointerSize));
- __ bind(&loop_check);
- __ cmp(ebx, array_limit);
- __ 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 -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- ebx : 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.
- // -- edi : the target to call (can be any Object).
- // -----------------------------------
-
- // Pop return address to allow tail-call after pushing arguments.
- __ Pop(edx);
-
- // Find the address of the last argument.
- __ mov(ecx, eax);
- __ add(ecx, Immediate(1)); // Add one for receiver.
- __ shl(ecx, kPointerSizeLog2);
- __ neg(ecx);
- __ add(ecx, ebx);
-
- Generate_InterpreterPushArgs(masm, ecx);
-
- // Call the target.
- __ Push(edx); // 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 -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edx : the new target
- // -- edi : the constructor
- // -- ebx : 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.
- __ Pop(ecx);
-
- // Push edi in the slot meant for receiver. We need an extra register
- // so store edi temporarily on stack.
- __ Push(edi);
-
- // Find the address of the last argument.
- __ mov(edi, eax);
- __ neg(edi);
- __ shl(edi, kPointerSizeLog2);
- __ add(edi, ebx);
-
- Generate_InterpreterPushArgs(masm, edi);
-
- // Restore the constructor from slot on stack. It was pushed at the slot
- // meant for receiver.
- __ mov(edi, Operand(esp, eax, times_pointer_size, 0));
-
- // Re-push return address.
- __ Push(ecx);
-
- // Call the constructor with unmodified eax, edi, ebi values.
- __ 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));
- __ LoadHeapObject(ebx,
- masm->isolate()->builtins()->InterpreterEntryTrampoline());
- __ add(ebx, Immediate(interpreter_entry_return_pc_offset->value() +
- Code::kHeaderSize - kHeapObjectTag));
- __ push(ebx);
-
- // Initialize the dispatch table register.
- __ mov(kInterpreterDispatchTableRegister,
- Immediate(ExternalReference::interpreter_dispatch_table_address(
- masm->isolate())));
-
- // Get the bytecode array pointer from the frame.
- __ mov(kInterpreterBytecodeArrayRegister,
- Operand(ebp, InterpreterFrameConstants::kBytecodeArrayFromFp));
-
- if (FLAG_debug_code) {
- // Check function data field is actually a BytecodeArray object.
- __ AssertNotSmi(kInterpreterBytecodeArrayRegister);
- __ CmpObjectType(kInterpreterBytecodeArrayRegister, BYTECODE_ARRAY_TYPE,
- ebx);
- __ Assert(equal, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
- }
-
- // Get the target bytecode offset from the frame.
- __ mov(kInterpreterBytecodeOffsetRegister,
- Operand(ebp, InterpreterFrameConstants::kBytecodeOffsetFromFp));
- __ SmiUntag(kInterpreterBytecodeOffsetRegister);
-
- // Dispatch to the target bytecode.
- __ movzx_b(ebx, Operand(kInterpreterBytecodeArrayRegister,
- kInterpreterBytecodeOffsetRegister, times_1, 0));
- __ mov(ebx, Operand(kInterpreterDispatchTableRegister, ebx,
- times_pointer_size, 0));
- __ jmp(ebx);
-}
-
-void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : argument count (preserved for callee)
- // -- edx : new target (preserved for callee)
- // -- edi : target function (preserved for callee)
- // -----------------------------------
- // First lookup code, maybe we don't need to compile!
- Label gotta_call_runtime, gotta_call_runtime_no_stack;
- Label maybe_call_runtime;
- Label try_shared;
- Label loop_top, loop_bottom;
-
- Register closure = edi;
- Register new_target = edx;
- Register argument_count = eax;
-
- __ push(argument_count);
- __ push(new_target);
- __ push(closure);
-
- Register map = argument_count;
- Register index = ebx;
- __ mov(map, FieldOperand(closure, JSFunction::kSharedFunctionInfoOffset));
- __ mov(map, FieldOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
- __ mov(index, FieldOperand(map, FixedArray::kLengthOffset));
- __ cmp(index, Immediate(Smi::FromInt(2)));
- __ j(less, &gotta_call_runtime);
-
- // Find literals.
- // edx : native context
- // ebx : length / index
- // eax : optimized code map
- // stack[0] : new target
- // stack[4] : closure
- Register native_context = edx;
- __ mov(native_context, NativeContextOperand());
-
- __ bind(&loop_top);
- Register temp = edi;
-
- // Does the native context match?
- __ mov(temp, FieldOperand(map, index, times_half_pointer_size,
- SharedFunctionInfo::kOffsetToPreviousContext));
- __ mov(temp, FieldOperand(temp, WeakCell::kValueOffset));
- __ cmp(temp, native_context);
- __ j(not_equal, &loop_bottom);
- // OSR id set to none?
- __ mov(temp, FieldOperand(map, index, times_half_pointer_size,
- SharedFunctionInfo::kOffsetToPreviousOsrAstId));
- const int bailout_id = BailoutId::None().ToInt();
- __ cmp(temp, Immediate(Smi::FromInt(bailout_id)));
- __ j(not_equal, &loop_bottom);
-
- // Literals available?
- Label got_literals, maybe_cleared_weakcell;
- __ mov(temp, FieldOperand(map, index, times_half_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);
- __ JumpIfSmi(FieldOperand(temp, WeakCell::kValueOffset),
- &maybe_cleared_weakcell);
- // The WeakCell value is a pointer, therefore it's a valid literals array.
- __ mov(temp, FieldOperand(temp, WeakCell::kValueOffset));
- __ jmp(&got_literals);
-
- // We have 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);
- __ cmp(FieldOperand(temp, WeakCell::kValueOffset), Immediate(0));
- __ j(equal, &gotta_call_runtime);
-
- // Save the literals in the closure.
- __ bind(&got_literals);
- __ mov(ecx, Operand(esp, 0));
- __ mov(FieldOperand(ecx, JSFunction::kLiteralsOffset), temp);
- __ push(index);
- __ RecordWriteField(ecx, JSFunction::kLiteralsOffset, temp, index,
- kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
- __ pop(index);
-
- // Code available?
- Register entry = ecx;
- __ mov(entry, FieldOperand(map, index, times_half_pointer_size,
- SharedFunctionInfo::kOffsetToPreviousCachedCode));
- __ mov(entry, FieldOperand(entry, WeakCell::kValueOffset));
- __ JumpIfSmi(entry, &maybe_call_runtime);
-
- // Found literals and code. Get them into the closure and return.
- __ pop(closure);
- // Store code entry in the closure.
- __ lea(entry, FieldOperand(entry, Code::kHeaderSize));
-
- Label install_optimized_code_and_tailcall;
- __ bind(&install_optimized_code_and_tailcall);
- __ mov(FieldOperand(closure, JSFunction::kCodeEntryOffset), entry);
- __ RecordWriteCodeEntryField(closure, entry, eax);
-
- // Link the closure into the optimized function list.
- // ecx : code entry
- // edx : native context
- // edi : closure
- __ mov(ebx,
- ContextOperand(native_context, Context::OPTIMIZED_FUNCTIONS_LIST));
- __ mov(FieldOperand(closure, JSFunction::kNextFunctionLinkOffset), ebx);
- __ RecordWriteField(closure, JSFunction::kNextFunctionLinkOffset, ebx, eax,
- kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
- const int function_list_offset =
- Context::SlotOffset(Context::OPTIMIZED_FUNCTIONS_LIST);
- __ mov(ContextOperand(native_context, Context::OPTIMIZED_FUNCTIONS_LIST),
- closure);
- // Save closure before the write barrier.
- __ mov(ebx, closure);
- __ RecordWriteContextSlot(native_context, function_list_offset, closure, eax,
- kDontSaveFPRegs);
- __ mov(closure, ebx);
- __ pop(new_target);
- __ pop(argument_count);
- __ jmp(entry);
-
- __ bind(&loop_bottom);
- __ sub(index, Immediate(Smi::FromInt(SharedFunctionInfo::kEntryLength)));
- __ cmp(index, Immediate(Smi::FromInt(1)));
- __ j(greater, &loop_top);
-
- // We found neither literals nor code.
- __ jmp(&gotta_call_runtime);
-
- __ bind(&maybe_call_runtime);
- __ pop(closure);
-
- // Last possibility. Check the context free optimized code map entry.
- __ mov(entry, FieldOperand(map, FixedArray::kHeaderSize +
- SharedFunctionInfo::kSharedCodeIndex));
- __ mov(entry, FieldOperand(entry, WeakCell::kValueOffset));
- __ JumpIfSmi(entry, &try_shared);
-
- // Store code entry in the closure.
- __ lea(entry, FieldOperand(entry, Code::kHeaderSize));
- __ jmp(&install_optimized_code_and_tailcall);
-
- __ bind(&try_shared);
- __ pop(new_target);
- __ pop(argument_count);
- // Is the full code valid?
- __ mov(entry, FieldOperand(closure, JSFunction::kSharedFunctionInfoOffset));
- __ mov(entry, FieldOperand(entry, SharedFunctionInfo::kCodeOffset));
- __ mov(ebx, FieldOperand(entry, Code::kFlagsOffset));
- __ and_(ebx, Code::KindField::kMask);
- __ shr(ebx, Code::KindField::kShift);
- __ cmp(ebx, Immediate(Code::BUILTIN));
- __ j(equal, &gotta_call_runtime_no_stack);
- // Yes, install the full code.
- __ lea(entry, FieldOperand(entry, Code::kHeaderSize));
- __ mov(FieldOperand(closure, JSFunction::kCodeEntryOffset), entry);
- __ RecordWriteCodeEntryField(closure, entry, ebx);
- __ jmp(entry);
-
- __ bind(&gotta_call_runtime);
- __ pop(closure);
- __ pop(new_target);
- __ pop(argument_count);
- __ bind(&gotta_call_runtime_no_stack);
-
- 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 -------------
- // -- eax : argument count (preserved for callee)
- // -- edx : new target (preserved for callee)
- // -- edi : target function (preserved for callee)
- // -----------------------------------
- Label failed;
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
- // Push the number of arguments to the callee.
- __ SmiTag(eax);
- __ push(eax);
- // Push a copy of the target function and the new target.
- __ push(edi);
- __ push(edx);
-
- // The function.
- __ push(edi);
- // Copy arguments from caller (stdlib, foreign, heap).
- for (int i = 2; i >= 0; --i) {
- __ push(Operand(
- ebp, 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(eax, &failed, Label::kNear);
- scope.GenerateLeaveFrame();
- __ ret(4 * kPointerSize);
-
- __ bind(&failed);
- // Restore target function and new target.
- __ pop(edx);
- __ pop(edi);
- __ pop(eax);
- __ SmiUntag(eax);
- }
- // 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.
- __ sub(Operand(esp, 0), Immediate(5));
- __ pushad();
- __ mov(eax, Operand(esp, 8 * kPointerSize));
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- __ PrepareCallCFunction(2, ebx);
- __ mov(Operand(esp, 1 * kPointerSize),
- Immediate(ExternalReference::isolate_address(masm->isolate())));
- __ mov(Operand(esp, 0), eax);
- __ 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();
- __ mov(eax, Operand(esp, 8 * kPointerSize));
- __ sub(eax, Immediate(Assembler::kCallInstructionLength));
- { // NOLINT
- FrameScope scope(masm, StackFrame::MANUAL);
- __ PrepareCallCFunction(2, ebx);
- __ mov(Operand(esp, 1 * kPointerSize),
- Immediate(ExternalReference::isolate_address(masm->isolate())));
- __ mov(Operand(esp, 0), eax);
- __ CallCFunction(
- ExternalReference::get_mark_code_as_executed_function(masm->isolate()),
- 2);
- }
- __ popad();
-
- // Perform prologue operations usually performed by the young code stub.
- __ pop(eax); // Pop return address into scratch register.
- __ push(ebp); // Caller's frame pointer.
- __ mov(ebp, esp);
- __ push(esi); // Callee's context.
- __ push(edi); // Callee's JS Function.
- __ push(eax); // Push return address after frame prologue.
-
- // 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.
- }
-
- __ pop(MemOperand(esp, 0)); // 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) {
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
-
- // Pass deoptimization type to the runtime system.
- __ push(Immediate(Smi::FromInt(static_cast<int>(type))));
- __ CallRuntime(Runtime::kNotifyDeoptimized);
-
- // Tear down internal frame.
- }
-
- // Get the full codegen state from the stack and untag it.
- __ mov(ecx, Operand(esp, 1 * kPointerSize));
- __ SmiUntag(ecx);
-
- // Switch on the state.
- Label not_no_registers, not_tos_eax;
- __ cmp(ecx, static_cast<int>(Deoptimizer::BailoutState::NO_REGISTERS));
- __ j(not_equal, &not_no_registers, Label::kNear);
- __ ret(1 * kPointerSize); // Remove state.
-
- __ bind(&not_no_registers);
- DCHECK_EQ(kInterpreterAccumulatorRegister.code(), eax.code());
- __ mov(eax, Operand(esp, 2 * kPointerSize));
- __ cmp(ecx, static_cast<int>(Deoptimizer::BailoutState::TOS_REGISTER));
- __ j(not_equal, &not_tos_eax, Label::kNear);
- __ ret(2 * kPointerSize); // Remove state, eax.
-
- __ bind(&not_tos_eax);
- __ 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 -------------
- // -- eax : number of arguments
- // -- edi : function
- // -- esi : context
- // -- esp[0] : return address
- // -- esp[4] : receiver
- // -----------------------------------
-
- // 1. Load receiver into eax and check that it's actually a JSDate object.
- Label receiver_not_date;
- {
- __ mov(eax, Operand(esp, kPointerSize));
- __ JumpIfSmi(eax, &receiver_not_date);
- __ CmpObjectType(eax, JS_DATE_TYPE, ebx);
- __ j(not_equal, &receiver_not_date);
- }
-
- // 2. Load the specified date field, falling back to the runtime as necessary.
- if (field_index == JSDate::kDateValue) {
- __ mov(eax, FieldOperand(eax, JSDate::kValueOffset));
- } else {
- if (field_index < JSDate::kFirstUncachedField) {
- Label stamp_mismatch;
- __ mov(edx, Operand::StaticVariable(
- ExternalReference::date_cache_stamp(masm->isolate())));
- __ cmp(edx, FieldOperand(eax, JSDate::kCacheStampOffset));
- __ j(not_equal, &stamp_mismatch, Label::kNear);
- __ mov(eax, FieldOperand(
- eax, JSDate::kValueOffset + field_index * kPointerSize));
- __ ret(1 * kPointerSize);
- __ bind(&stamp_mismatch);
- }
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ PrepareCallCFunction(2, ebx);
- __ mov(Operand(esp, 0), eax);
- __ mov(Operand(esp, 1 * kPointerSize),
- Immediate(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(ebx, Immediate(0));
- __ EnterBuiltinFrame(esi, edi, ebx);
- __ CallRuntime(Runtime::kThrowNotDateError);
- }
-}
-
-// static
-void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : argc
- // -- esp[0] : return address
- // -- esp[4] : argArray
- // -- esp[8] : thisArg
- // -- esp[12] : receiver
- // -----------------------------------
-
- // 1. Load receiver into edi, argArray into eax (if present), remove all
- // arguments from the stack (including the receiver), and push thisArg (if
- // present) instead.
- {
- Label no_arg_array, no_this_arg;
- __ LoadRoot(edx, Heap::kUndefinedValueRootIndex);
- __ mov(ebx, edx);
- __ mov(edi, Operand(esp, eax, times_pointer_size, kPointerSize));
- __ test(eax, eax);
- __ j(zero, &no_this_arg, Label::kNear);
- {
- __ mov(edx, Operand(esp, eax, times_pointer_size, 0));
- __ cmp(eax, Immediate(1));
- __ j(equal, &no_arg_array, Label::kNear);
- __ mov(ebx, Operand(esp, eax, times_pointer_size, -kPointerSize));
- __ bind(&no_arg_array);
- }
- __ bind(&no_this_arg);
- __ PopReturnAddressTo(ecx);
- __ lea(esp, Operand(esp, eax, times_pointer_size, kPointerSize));
- __ Push(edx);
- __ PushReturnAddressFrom(ecx);
- __ Move(eax, ebx);
- }
-
- // ----------- S t a t e -------------
- // -- eax : argArray
- // -- edi : receiver
- // -- esp[0] : return address
- // -- esp[4] : thisArg
- // -----------------------------------
-
- // 2. Make sure the receiver is actually callable.
- Label receiver_not_callable;
- __ JumpIfSmi(edi, &receiver_not_callable, Label::kNear);
- __ mov(ecx, FieldOperand(edi, HeapObject::kMapOffset));
- __ test_b(FieldOperand(ecx, 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(eax, Heap::kNullValueRootIndex, &no_arguments, Label::kNear);
- __ JumpIfRoot(eax, Heap::kUndefinedValueRootIndex, &no_arguments,
- Label::kNear);
-
- // 4a. Apply the receiver to the given argArray (passing undefined for
- // new.target).
- __ LoadRoot(edx, Heap::kUndefinedValueRootIndex);
- __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET);
-
- // 4b. The argArray is either null or undefined, so we tail call without any
- // arguments to the receiver.
- __ bind(&no_arguments);
- {
- __ Set(eax, 0);
- __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
- }
-
- // 4c. The receiver is not callable, throw an appropriate TypeError.
- __ bind(&receiver_not_callable);
- {
- __ mov(Operand(esp, kPointerSize), edi);
- __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
- }
-}
-
-
-// static
-void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) {
- // Stack Layout:
- // esp[0] : Return address
- // esp[8] : Argument n
- // esp[16] : Argument n-1
- // ...
- // esp[8 * n] : Argument 1
- // esp[8 * (n + 1)] : Receiver (callable to call)
- //
- // eax contains the number of arguments, n, not counting the receiver.
- //
- // 1. Make sure we have at least one argument.
- {
- Label done;
- __ test(eax, eax);
- __ j(not_zero, &done, Label::kNear);
- __ PopReturnAddressTo(ebx);
- __ PushRoot(Heap::kUndefinedValueRootIndex);
- __ PushReturnAddressFrom(ebx);
- __ inc(eax);
- __ bind(&done);
- }
-
- // 2. Get the callable to call (passed as receiver) from the stack.
- __ mov(edi, Operand(esp, eax, times_pointer_size, kPointerSize));
-
- // 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;
- __ mov(ecx, eax);
- __ bind(&loop);
- __ mov(ebx, Operand(esp, ecx, times_pointer_size, 0));
- __ mov(Operand(esp, ecx, times_pointer_size, kPointerSize), ebx);
- __ dec(ecx);
- __ j(not_sign, &loop); // While non-negative (to copy return address).
- __ pop(ebx); // Discard copy of return address.
- __ dec(eax); // One fewer argument (first argument is new receiver).
- }
-
- // 4. Call the callable.
- __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
-}
-
-
-void Builtins::Generate_ReflectApply(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : argc
- // -- esp[0] : return address
- // -- esp[4] : argumentsList
- // -- esp[8] : thisArgument
- // -- esp[12] : target
- // -- esp[16] : receiver
- // -----------------------------------
-
- // 1. Load target into edi (if present), argumentsList into eax (if present),
- // remove all arguments from the stack (including the receiver), and push
- // thisArgument (if present) instead.
- {
- Label done;
- __ LoadRoot(edi, Heap::kUndefinedValueRootIndex);
- __ mov(edx, edi);
- __ mov(ebx, edi);
- __ cmp(eax, Immediate(1));
- __ j(below, &done, Label::kNear);
- __ mov(edi, Operand(esp, eax, times_pointer_size, -0 * kPointerSize));
- __ j(equal, &done, Label::kNear);
- __ mov(edx, Operand(esp, eax, times_pointer_size, -1 * kPointerSize));
- __ cmp(eax, Immediate(3));
- __ j(below, &done, Label::kNear);
- __ mov(ebx, Operand(esp, eax, times_pointer_size, -2 * kPointerSize));
- __ bind(&done);
- __ PopReturnAddressTo(ecx);
- __ lea(esp, Operand(esp, eax, times_pointer_size, kPointerSize));
- __ Push(edx);
- __ PushReturnAddressFrom(ecx);
- __ Move(eax, ebx);
- }
-
- // ----------- S t a t e -------------
- // -- eax : argumentsList
- // -- edi : target
- // -- esp[0] : return address
- // -- esp[4] : thisArgument
- // -----------------------------------
-
- // 2. Make sure the target is actually callable.
- Label target_not_callable;
- __ JumpIfSmi(edi, &target_not_callable, Label::kNear);
- __ mov(ecx, FieldOperand(edi, HeapObject::kMapOffset));
- __ test_b(FieldOperand(ecx, 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(edx, Heap::kUndefinedValueRootIndex);
- __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET);
-
- // 3b. The target is not callable, throw an appropriate TypeError.
- __ bind(&target_not_callable);
- {
- __ mov(Operand(esp, kPointerSize), edi);
- __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
- }
-}
-
-void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : argc
- // -- esp[0] : return address
- // -- esp[4] : new.target (optional)
- // -- esp[8] : argumentsList
- // -- esp[12] : target
- // -- esp[16] : receiver
- // -----------------------------------
-
- // 1. Load target into edi (if present), argumentsList into eax (if present),
- // new.target into edx (if present, otherwise use target), remove all
- // arguments from the stack (including the receiver), and push thisArgument
- // (if present) instead.
- {
- Label done;
- __ LoadRoot(edi, Heap::kUndefinedValueRootIndex);
- __ mov(edx, edi);
- __ mov(ebx, edi);
- __ cmp(eax, Immediate(1));
- __ j(below, &done, Label::kNear);
- __ mov(edi, Operand(esp, eax, times_pointer_size, -0 * kPointerSize));
- __ mov(edx, edi);
- __ j(equal, &done, Label::kNear);
- __ mov(ebx, Operand(esp, eax, times_pointer_size, -1 * kPointerSize));
- __ cmp(eax, Immediate(3));
- __ j(below, &done, Label::kNear);
- __ mov(edx, Operand(esp, eax, times_pointer_size, -2 * kPointerSize));
- __ bind(&done);
- __ PopReturnAddressTo(ecx);
- __ lea(esp, Operand(esp, eax, times_pointer_size, kPointerSize));
- __ PushRoot(Heap::kUndefinedValueRootIndex);
- __ PushReturnAddressFrom(ecx);
- __ Move(eax, ebx);
- }
-
- // ----------- S t a t e -------------
- // -- eax : argumentsList
- // -- edx : new.target
- // -- edi : target
- // -- esp[0] : return address
- // -- esp[4] : receiver (undefined)
- // -----------------------------------
-
- // 2. Make sure the target is actually a constructor.
- Label target_not_constructor;
- __ JumpIfSmi(edi, &target_not_constructor, Label::kNear);
- __ mov(ecx, FieldOperand(edi, HeapObject::kMapOffset));
- __ test_b(FieldOperand(ecx, 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(edx, &new_target_not_constructor, Label::kNear);
- __ mov(ecx, FieldOperand(edx, HeapObject::kMapOffset));
- __ test_b(FieldOperand(ecx, 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);
- {
- __ mov(Operand(esp, kPointerSize), edi);
- __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
- }
-
- // 4c. The new.target is not a constructor, throw an appropriate TypeError.
- __ bind(&new_target_not_constructor);
- {
- __ mov(Operand(esp, kPointerSize), edx);
- __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
- }
-}
-
-
-void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : argc
- // -- esp[0] : return address
- // -- esp[4] : last argument
- // -----------------------------------
- Label generic_array_code;
-
- // Get the InternalArray function.
- __ LoadGlobalFunction(Context::INTERNAL_ARRAY_FUNCTION_INDEX, edi);
-
- if (FLAG_debug_code) {
- // Initial map for the builtin InternalArray function should be a map.
- __ mov(ebx, FieldOperand(edi, JSFunction::kPrototypeOrInitialMapOffset));
- // Will both indicate a NULL and a Smi.
- __ test(ebx, Immediate(kSmiTagMask));
- __ Assert(not_zero, kUnexpectedInitialMapForInternalArrayFunction);
- __ CmpObjectType(ebx, MAP_TYPE, ecx);
- __ Assert(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 -------------
- // -- eax : argc
- // -- esp[0] : return address
- // -- esp[4] : last argument
- // -----------------------------------
- Label generic_array_code;
-
- // Get the Array function.
- __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, edi);
- __ mov(edx, edi);
-
- if (FLAG_debug_code) {
- // Initial map for the builtin Array function should be a map.
- __ mov(ebx, FieldOperand(edi, JSFunction::kPrototypeOrInitialMapOffset));
- // Will both indicate a NULL and a Smi.
- __ test(ebx, Immediate(kSmiTagMask));
- __ Assert(not_zero, kUnexpectedInitialMapForArrayFunction);
- __ CmpObjectType(ebx, MAP_TYPE, ecx);
- __ Assert(equal, kUnexpectedInitialMapForArrayFunction);
- }
-
- // Run the native code for the Array function called as a normal function.
- // tail call a stub
- __ mov(ebx, masm->isolate()->factory()->undefined_value());
- ArrayConstructorStub stub(masm->isolate());
- __ TailCallStub(&stub);
-}
-
-
-// static
-void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) {
- // ----------- S t a t e -------------
- // -- eax : number of arguments
- // -- edi : function
- // -- esi : context
- // -- esp[0] : return address
- // -- esp[(argc - n) * 8] : arg[n] (zero-based)
- // -- esp[(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 edx and the double value in xmm0.
- __ LoadRoot(edx, root_index);
- __ movsd(xmm0, FieldOperand(edx, HeapNumber::kValueOffset));
- __ Move(ecx, eax);
-
- Label done_loop, loop;
- __ bind(&loop);
- {
- // Check if all parameters done.
- __ test(ecx, ecx);
- __ j(zero, &done_loop);
-
- // Load the next parameter tagged value into ebx.
- __ mov(ebx, Operand(esp, ecx, 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(ebx, &convert_smi);
- __ JumpIfRoot(FieldOperand(ebx, HeapObject::kMapOffset),
- Heap::kHeapNumberMapRootIndex, &convert_number);
- {
- // Parameter is not a Number, use the ToNumber builtin to convert it.
- FrameScope scope(masm, StackFrame::MANUAL);
- __ SmiTag(eax);
- __ SmiTag(ecx);
- __ EnterBuiltinFrame(esi, edi, eax);
- __ Push(ecx);
- __ Push(edx);
- __ mov(eax, ebx);
- __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
- __ mov(ebx, eax);
- __ Pop(edx);
- __ Pop(ecx);
- __ LeaveBuiltinFrame(esi, edi, eax);
- __ SmiUntag(ecx);
- __ SmiUntag(eax);
- {
- // Restore the double accumulator value (xmm0).
- Label restore_smi, done_restore;
- __ JumpIfSmi(edx, &restore_smi, Label::kNear);
- __ movsd(xmm0, FieldOperand(edx, HeapNumber::kValueOffset));
- __ jmp(&done_restore, Label::kNear);
- __ bind(&restore_smi);
- __ SmiUntag(edx);
- __ Cvtsi2sd(xmm0, edx);
- __ SmiTag(edx);
- __ bind(&done_restore);
- }
- }
- __ jmp(&convert);
- __ bind(&convert_number);
- __ movsd(xmm1, FieldOperand(ebx, HeapNumber::kValueOffset));
- __ jmp(&done_convert, Label::kNear);
- __ bind(&convert_smi);
- __ SmiUntag(ebx);
- __ Cvtsi2sd(xmm1, ebx);
- __ SmiTag(ebx);
- __ 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);
- __ mov(edx, ebx);
- __ jmp(&done_compare, Label::kNear);
-
- // At least one side is NaN, which means that the result will be NaN too.
- __ bind(&compare_nan);
- __ LoadRoot(edx, Heap::kNanValueRootIndex);
- __ movsd(xmm0, FieldOperand(edx, HeapNumber::kValueOffset));
- __ jmp(&done_compare, Label::kNear);
-
- // Left and right hand side are equal, check for -0 vs. +0.
- __ bind(&compare_equal);
- __ Push(edi); // Preserve function in edi.
- __ movmskpd(edi, reg);
- __ test(edi, Immediate(1));
- __ Pop(edi);
- __ j(not_zero, &compare_swap);
-
- __ bind(&done_compare);
- __ dec(ecx);
- __ jmp(&loop);
- }
-
- __ bind(&done_loop);
- __ PopReturnAddressTo(ecx);
- __ lea(esp, Operand(esp, eax, times_pointer_size, kPointerSize));
- __ PushReturnAddressFrom(ecx);
- __ mov(eax, edx);
- __ Ret();
-}
-
-// static
-void Builtins::Generate_NumberConstructor(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : number of arguments
- // -- edi : constructor function
- // -- esi : context
- // -- esp[0] : return address
- // -- esp[(argc - n) * 4] : arg[n] (zero-based)
- // -- esp[(argc + 1) * 4] : receiver
- // -----------------------------------
-
- // 1. Load the first argument into ebx.
- Label no_arguments;
- {
- __ test(eax, eax);
- __ j(zero, &no_arguments, Label::kNear);
- __ mov(ebx, Operand(esp, eax, times_pointer_size, 0));
- }
-
- // 2a. Convert the first argument to a number.
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- __ SmiTag(eax);
- __ EnterBuiltinFrame(esi, edi, eax);
- __ mov(eax, ebx);
- __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
- __ LeaveBuiltinFrame(esi, edi, ebx); // Argc popped to ebx.
- __ SmiUntag(ebx);
- }
-
- {
- // Drop all arguments including the receiver.
- __ PopReturnAddressTo(ecx);
- __ lea(esp, Operand(esp, ebx, times_pointer_size, kPointerSize));
- __ PushReturnAddressFrom(ecx);
- __ Ret();
- }
-
- // 2b. No arguments, return +0 (already in eax).
- __ bind(&no_arguments);
- __ ret(1 * kPointerSize);
-}
-
-
-// static
-void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : number of arguments
- // -- edi : constructor function
- // -- edx : new target
- // -- esi : context
- // -- esp[0] : return address
- // -- esp[(argc - n) * 4] : arg[n] (zero-based)
- // -- esp[(argc + 1) * 4] : receiver
- // -----------------------------------
-
- // 1. Make sure we operate in the context of the called function.
- __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset));
-
- // Store argc in r8.
- __ mov(ecx, eax);
- __ SmiTag(ecx);
-
- // 2. Load the first argument into ebx.
- {
- Label no_arguments, done;
- __ test(eax, eax);
- __ j(zero, &no_arguments, Label::kNear);
- __ mov(ebx, Operand(esp, eax, times_pointer_size, 0));
- __ jmp(&done, Label::kNear);
- __ bind(&no_arguments);
- __ Move(ebx, Smi::FromInt(0));
- __ bind(&done);
- }
-
- // 3. Make sure ebx is a number.
- {
- Label done_convert;
- __ JumpIfSmi(ebx, &done_convert);
- __ CompareRoot(FieldOperand(ebx, HeapObject::kMapOffset),
- Heap::kHeapNumberMapRootIndex);
- __ j(equal, &done_convert);
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- __ EnterBuiltinFrame(esi, edi, ecx);
- __ Push(edx);
- __ Move(eax, ebx);
- __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
- __ Move(ebx, eax);
- __ Pop(edx);
- __ LeaveBuiltinFrame(esi, edi, ecx);
- }
- __ bind(&done_convert);
- }
-
- // 4. Check if new target and constructor differ.
- Label drop_frame_and_ret, done_alloc, new_object;
- __ cmp(edx, edi);
- __ j(not_equal, &new_object);
-
- // 5. Allocate a JSValue wrapper for the number.
- __ AllocateJSValue(eax, edi, ebx, esi, &done_alloc);
- __ jmp(&drop_frame_and_ret);
-
- __ bind(&done_alloc);
- __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); // Restore esi.
-
- // 6. Fallback to the runtime to create new object.
- __ bind(&new_object);
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- __ EnterBuiltinFrame(esi, edi, ecx);
- __ Push(ebx); // the first argument
- FastNewObjectStub stub(masm->isolate());
- __ CallStub(&stub);
- __ Pop(FieldOperand(eax, JSValue::kValueOffset));
- __ LeaveBuiltinFrame(esi, edi, ecx);
- }
-
- __ bind(&drop_frame_and_ret);
- {
- // Drop all arguments including the receiver.
- __ PopReturnAddressTo(esi);
- __ SmiUntag(ecx);
- __ lea(esp, Operand(esp, ecx, times_pointer_size, kPointerSize));
- __ PushReturnAddressFrom(esi);
- __ Ret();
- }
-}
-
-
-// static
-void Builtins::Generate_StringConstructor(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : number of arguments
- // -- edi : constructor function
- // -- esi : context
- // -- esp[0] : return address
- // -- esp[(argc - n) * 4] : arg[n] (zero-based)
- // -- esp[(argc + 1) * 4] : receiver
- // -----------------------------------
-
- // 1. Load the first argument into eax.
- Label no_arguments;
- {
- __ mov(ebx, eax); // Store argc in ebx.
- __ test(eax, eax);
- __ j(zero, &no_arguments, Label::kNear);
- __ mov(eax, Operand(esp, eax, times_pointer_size, 0));
- }
-
- // 2a. At least one argument, return eax if it's a string, otherwise
- // dispatch to appropriate conversion.
- Label drop_frame_and_ret, to_string, symbol_descriptive_string;
- {
- __ JumpIfSmi(eax, &to_string, Label::kNear);
- STATIC_ASSERT(FIRST_NONSTRING_TYPE == SYMBOL_TYPE);
- __ CmpObjectType(eax, FIRST_NONSTRING_TYPE, edx);
- __ 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(eax, Heap::kempty_stringRootIndex);
- __ ret(1 * kPointerSize);
- }
-
- // 3a. Convert eax to a string.
- __ bind(&to_string);
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- ToStringStub stub(masm->isolate());
- __ SmiTag(ebx);
- __ EnterBuiltinFrame(esi, edi, ebx);
- __ CallStub(&stub);
- __ LeaveBuiltinFrame(esi, edi, ebx);
- __ SmiUntag(ebx);
- }
- __ jmp(&drop_frame_and_ret, Label::kNear);
-
- // 3b. Convert symbol in eax to a string.
- __ bind(&symbol_descriptive_string);
- {
- __ PopReturnAddressTo(ecx);
- __ lea(esp, Operand(esp, ebx, times_pointer_size, kPointerSize));
- __ Push(eax);
- __ PushReturnAddressFrom(ecx);
- __ TailCallRuntime(Runtime::kSymbolDescriptiveString);
- }
-
- __ bind(&drop_frame_and_ret);
- {
- // Drop all arguments including the receiver.
- __ PopReturnAddressTo(ecx);
- __ lea(esp, Operand(esp, ebx, times_pointer_size, kPointerSize));
- __ PushReturnAddressFrom(ecx);
- __ Ret();
- }
-}
-
-
-// static
-void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : number of arguments
- // -- edi : constructor function
- // -- edx : new target
- // -- esi : context
- // -- esp[0] : return address
- // -- esp[(argc - n) * 4] : arg[n] (zero-based)
- // -- esp[(argc + 1) * 4] : receiver
- // -----------------------------------
-
- // 1. Make sure we operate in the context of the called function.
- __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset));
-
- __ mov(ebx, eax);
-
- // 2. Load the first argument into eax.
- {
- Label no_arguments, done;
- __ test(ebx, ebx);
- __ j(zero, &no_arguments, Label::kNear);
- __ mov(eax, Operand(esp, ebx, times_pointer_size, 0));
- __ jmp(&done, Label::kNear);
- __ bind(&no_arguments);
- __ LoadRoot(eax, Heap::kempty_stringRootIndex);
- __ bind(&done);
- }
-
- // 3. Make sure eax is a string.
- {
- Label convert, done_convert;
- __ JumpIfSmi(eax, &convert, Label::kNear);
- __ CmpObjectType(eax, FIRST_NONSTRING_TYPE, ecx);
- __ j(below, &done_convert);
- __ bind(&convert);
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- ToStringStub stub(masm->isolate());
- __ SmiTag(ebx);
- __ EnterBuiltinFrame(esi, edi, ebx);
- __ Push(edx);
- __ CallStub(&stub);
- __ Pop(edx);
- __ LeaveBuiltinFrame(esi, edi, ebx);
- __ SmiUntag(ebx);
- }
- __ bind(&done_convert);
- }
-
- // 4. Check if new target and constructor differ.
- Label drop_frame_and_ret, done_alloc, new_object;
- __ cmp(edx, edi);
- __ j(not_equal, &new_object);
-
- // 5. Allocate a JSValue wrapper for the string.
- // AllocateJSValue can't handle src == dst register. Reuse esi and restore it
- // as needed after the call.
- __ mov(esi, eax);
- __ AllocateJSValue(eax, edi, esi, ecx, &done_alloc);
- __ jmp(&drop_frame_and_ret);
-
- __ bind(&done_alloc);
- {
- // Restore eax to the first argument and esi to the context.
- __ mov(eax, esi);
- __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset));
- }
-
- // 6. Fallback to the runtime to create new object.
- __ bind(&new_object);
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- __ SmiTag(ebx);
- __ EnterBuiltinFrame(esi, edi, ebx);
- __ Push(eax); // the first argument
- FastNewObjectStub stub(masm->isolate());
- __ CallStub(&stub);
- __ Pop(FieldOperand(eax, JSValue::kValueOffset));
- __ LeaveBuiltinFrame(esi, edi, ebx);
- __ SmiUntag(ebx);
- }
-
- __ bind(&drop_frame_and_ret);
- {
- // Drop all arguments including the receiver.
- __ PopReturnAddressTo(ecx);
- __ lea(esp, Operand(esp, ebx, times_pointer_size, kPointerSize));
- __ PushReturnAddressFrom(ecx);
- __ Ret();
- }
-}
-
-
-static void ArgumentsAdaptorStackCheck(MacroAssembler* masm,
- Label* stack_overflow) {
- // ----------- S t a t e -------------
- // -- eax : actual number of arguments
- // -- ebx : expected number of arguments
- // -- edx : new target (passed through to callee)
- // -----------------------------------
- // Check the stack for overflow. We are not trying to catch
- // interruptions (e.g. debug break and preemption) here, so the "real stack
- // limit" is checked.
- ExternalReference real_stack_limit =
- ExternalReference::address_of_real_stack_limit(masm->isolate());
- __ mov(edi, Operand::StaticVariable(real_stack_limit));
- // Make ecx the space we have left. The stack might already be overflowed
- // here which will cause ecx to become negative.
- __ mov(ecx, esp);
- __ sub(ecx, edi);
- // Make edi the space we need for the array when it is unrolled onto the
- // stack.
- __ mov(edi, ebx);
- __ shl(edi, kPointerSizeLog2);
- // Check if the arguments will overflow the stack.
- __ cmp(ecx, edi);
- __ j(less_equal, stack_overflow); // Signed comparison.
-}
-
-
-static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) {
- __ push(ebp);
- __ mov(ebp, esp);
-
- // Store the arguments adaptor context sentinel.
- __ push(Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
-
- // Push the function on the stack.
- __ push(edi);
-
- // Preserve the number of arguments on the stack. Must preserve eax,
- // ebx and ecx because these registers are used when copying the
- // arguments and the receiver.
- STATIC_ASSERT(kSmiTagSize == 1);
- __ lea(edi, Operand(eax, eax, times_1, kSmiTag));
- __ push(edi);
-}
-
-
-static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) {
- // Retrieve the number of arguments from the stack.
- __ mov(ebx, Operand(ebp, ArgumentsAdaptorFrameConstants::kLengthOffset));
-
- // Leave the frame.
- __ leave();
-
- // Remove caller arguments from the stack.
- STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0);
- __ pop(ecx);
- __ lea(esp, Operand(esp, ebx, times_2, 1 * kPointerSize)); // 1 ~ receiver
- __ push(ecx);
-}
-
-
-// static
-void Builtins::Generate_Apply(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : argumentsList
- // -- edi : target
- // -- edx : new.target (checked to be constructor or undefined)
- // -- esp[0] : return address.
- // -- esp[4] : thisArgument
- // -----------------------------------
-
- // Create the list of arguments from the array-like argumentsList.
- {
- Label create_arguments, create_array, create_runtime, done_create;
- __ JumpIfSmi(eax, &create_runtime);
-
- // Load the map of argumentsList into ecx.
- __ mov(ecx, FieldOperand(eax, HeapObject::kMapOffset));
-
- // Load native context into ebx.
- __ mov(ebx, NativeContextOperand());
-
- // Check if argumentsList is an (unmodified) arguments object.
- __ cmp(ecx, ContextOperand(ebx, Context::SLOPPY_ARGUMENTS_MAP_INDEX));
- __ j(equal, &create_arguments);
- __ cmp(ecx, ContextOperand(ebx, Context::STRICT_ARGUMENTS_MAP_INDEX));
- __ j(equal, &create_arguments);
-
- // Check if argumentsList is a fast JSArray.
- __ CmpInstanceType(ecx, 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(edi);
- __ Push(edx);
- __ Push(eax);
- __ CallRuntime(Runtime::kCreateListFromArrayLike);
- __ Pop(edx);
- __ Pop(edi);
- __ mov(ebx, FieldOperand(eax, FixedArray::kLengthOffset));
- __ SmiUntag(ebx);
- }
- __ jmp(&done_create);
-
- // Try to create the list from an arguments object.
- __ bind(&create_arguments);
- __ mov(ebx, FieldOperand(eax, JSArgumentsObject::kLengthOffset));
- __ mov(ecx, FieldOperand(eax, JSObject::kElementsOffset));
- __ cmp(ebx, FieldOperand(ecx, FixedArray::kLengthOffset));
- __ j(not_equal, &create_runtime);
- __ SmiUntag(ebx);
- __ mov(eax, ecx);
- __ jmp(&done_create);
-
- // Try to create the list from a JSArray object.
- __ bind(&create_array);
- __ mov(ecx, FieldOperand(ecx, Map::kBitField2Offset));
- __ DecodeField<Map::ElementsKindBits>(ecx);
- STATIC_ASSERT(FAST_SMI_ELEMENTS == 0);
- STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1);
- STATIC_ASSERT(FAST_ELEMENTS == 2);
- __ cmp(ecx, Immediate(FAST_ELEMENTS));
- __ j(above, &create_runtime);
- __ cmp(ecx, Immediate(FAST_HOLEY_SMI_ELEMENTS));
- __ j(equal, &create_runtime);
- __ mov(ebx, FieldOperand(eax, JSArray::kLengthOffset));
- __ SmiUntag(ebx);
- __ mov(eax, FieldOperand(eax, 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;
- ExternalReference real_stack_limit =
- ExternalReference::address_of_real_stack_limit(masm->isolate());
- __ mov(ecx, Operand::StaticVariable(real_stack_limit));
- // Make ecx the space we have left. The stack might already be overflowed
- // here which will cause ecx to become negative.
- __ neg(ecx);
- __ add(ecx, esp);
- __ sar(ecx, kPointerSizeLog2);
- // Check if the arguments will overflow the stack.
- __ cmp(ecx, ebx);
- __ j(greater, &done, Label::kNear); // Signed comparison.
- __ TailCallRuntime(Runtime::kThrowStackOverflow);
- __ bind(&done);
- }
-
- // ----------- S t a t e -------------
- // -- edi : target
- // -- eax : args (a FixedArray built from argumentsList)
- // -- ebx : len (number of elements to push from args)
- // -- edx : new.target (checked to be constructor or undefined)
- // -- esp[0] : return address.
- // -- esp[4] : thisArgument
- // -----------------------------------
-
- // Push arguments onto the stack (thisArgument is already on the stack).
- {
- __ movd(xmm0, edx);
- __ PopReturnAddressTo(edx);
- __ Move(ecx, Immediate(0));
- Label done, loop;
- __ bind(&loop);
- __ cmp(ecx, ebx);
- __ j(equal, &done, Label::kNear);
- __ Push(
- FieldOperand(eax, ecx, times_pointer_size, FixedArray::kHeaderSize));
- __ inc(ecx);
- __ jmp(&loop);
- __ bind(&done);
- __ PushReturnAddressFrom(edx);
- __ movd(edx, xmm0);
- __ Move(eax, ebx);
- }
-
- // Dispatch to Call or Construct depending on whether new.target is undefined.
- {
- __ CompareRoot(edx, 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 enabled.
- Label done;
- ExternalReference is_tail_call_elimination_enabled =
- ExternalReference::is_tail_call_elimination_enabled_address(
- masm->isolate());
- __ movzx_b(scratch1,
- Operand::StaticVariable(is_tail_call_elimination_enabled));
- __ cmp(scratch1, Immediate(0));
- __ j(equal, &done, Label::kNear);
-
- // Drop possible interpreter handler/stub frame.
- {
- Label no_interpreter_frame;
- __ cmp(Operand(ebp, CommonFrameConstants::kContextOrFrameTypeOffset),
- Immediate(Smi::FromInt(StackFrame::STUB)));
- __ j(not_equal, &no_interpreter_frame, Label::kNear);
- __ mov(ebp, Operand(ebp, 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;
- __ mov(scratch2, Operand(ebp, StandardFrameConstants::kCallerFPOffset));
- __ cmp(Operand(scratch2, CommonFrameConstants::kContextOrFrameTypeOffset),
- Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
- __ j(not_equal, &no_arguments_adaptor, Label::kNear);
-
- // Drop current frame and load arguments count from arguments adaptor frame.
- __ mov(ebp, scratch2);
- __ mov(caller_args_count_reg,
- Operand(ebp, ArgumentsAdaptorFrameConstants::kLengthOffset));
- __ SmiUntag(caller_args_count_reg);
- __ jmp(&formal_parameter_count_loaded, Label::kNear);
-
- __ bind(&no_arguments_adaptor);
- // Load caller's formal parameter count
- __ mov(scratch1, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset));
- __ mov(scratch1,
- FieldOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
- __ mov(
- caller_args_count_reg,
- FieldOperand(scratch1, SharedFunctionInfo::kFormalParameterCountOffset));
- __ SmiUntag(caller_args_count_reg);
-
- __ bind(&formal_parameter_count_loaded);
-
- ParameterCount callee_args_count(args_reg);
- __ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
- scratch3, ReturnAddressState::kOnStack, 0);
- __ bind(&done);
-}
-} // namespace
-
-// static
-void Builtins::Generate_CallFunction(MacroAssembler* masm,
- ConvertReceiverMode mode,
- TailCallMode tail_call_mode) {
- // ----------- S t a t e -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edi : the function to call (checked to be a JSFunction)
- // -----------------------------------
- __ AssertFunction(edi);
-
- // See ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList)
- // Check that the function is not a "classConstructor".
- Label class_constructor;
- __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- __ test_b(FieldOperand(edx, SharedFunctionInfo::kFunctionKindByteOffset),
- Immediate(SharedFunctionInfo::kClassConstructorBitsWithinByte));
- __ j(not_zero, &class_constructor);
-
- // 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);
- __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset));
- // We need to convert the receiver for non-native sloppy mode functions.
- Label done_convert;
- __ test_b(FieldOperand(edx, SharedFunctionInfo::kNativeByteOffset),
- Immediate((1 << SharedFunctionInfo::kNativeBitWithinByte) |
- (1 << SharedFunctionInfo::kStrictModeBitWithinByte)));
- __ j(not_zero, &done_convert);
- {
- // ----------- S t a t e -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edx : the shared function info.
- // -- edi : the function to call (checked to be a JSFunction)
- // -- esi : the function context.
- // -----------------------------------
-
- if (mode == ConvertReceiverMode::kNullOrUndefined) {
- // Patch receiver to global proxy.
- __ LoadGlobalProxy(ecx);
- } else {
- Label convert_to_object, convert_receiver;
- __ mov(ecx, Operand(esp, eax, times_pointer_size, kPointerSize));
- __ JumpIfSmi(ecx, &convert_to_object, Label::kNear);
- STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE);
- __ CmpObjectType(ecx, FIRST_JS_RECEIVER_TYPE, ebx);
- __ j(above_equal, &done_convert);
- if (mode != ConvertReceiverMode::kNotNullOrUndefined) {
- Label convert_global_proxy;
- __ JumpIfRoot(ecx, Heap::kUndefinedValueRootIndex,
- &convert_global_proxy, Label::kNear);
- __ JumpIfNotRoot(ecx, Heap::kNullValueRootIndex, &convert_to_object,
- Label::kNear);
- __ bind(&convert_global_proxy);
- {
- // Patch receiver to global proxy.
- __ LoadGlobalProxy(ecx);
- }
- __ 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);
- __ SmiTag(eax);
- __ Push(eax);
- __ Push(edi);
- __ mov(eax, ecx);
- ToObjectStub stub(masm->isolate());
- __ CallStub(&stub);
- __ mov(ecx, eax);
- __ Pop(edi);
- __ Pop(eax);
- __ SmiUntag(eax);
- }
- __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- __ bind(&convert_receiver);
- }
- __ mov(Operand(esp, eax, times_pointer_size, kPointerSize), ecx);
- }
- __ bind(&done_convert);
-
- // ----------- S t a t e -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edx : the shared function info.
- // -- edi : the function to call (checked to be a JSFunction)
- // -- esi : the function context.
- // -----------------------------------
-
- if (tail_call_mode == TailCallMode::kAllow) {
- PrepareForTailCall(masm, eax, ebx, ecx, edx);
- // Reload shared function info.
- __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- }
-
- __ mov(ebx,
- FieldOperand(edx, SharedFunctionInfo::kFormalParameterCountOffset));
- __ SmiUntag(ebx);
- ParameterCount actual(eax);
- ParameterCount expected(ebx);
- __ InvokeFunctionCode(edi, 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(edi);
- __ CallRuntime(Runtime::kThrowConstructorNonCallableError);
- }
-}
-
-
-namespace {
-
-void Generate_PushBoundArguments(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edx : new.target (only in case of [[Construct]])
- // -- edi : target (checked to be a JSBoundFunction)
- // -----------------------------------
-
- // Load [[BoundArguments]] into ecx and length of that into ebx.
- Label no_bound_arguments;
- __ mov(ecx, FieldOperand(edi, JSBoundFunction::kBoundArgumentsOffset));
- __ mov(ebx, FieldOperand(ecx, FixedArray::kLengthOffset));
- __ SmiUntag(ebx);
- __ test(ebx, ebx);
- __ j(zero, &no_bound_arguments);
- {
- // ----------- S t a t e -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edx : new.target (only in case of [[Construct]])
- // -- edi : target (checked to be a JSBoundFunction)
- // -- ecx : the [[BoundArguments]] (implemented as FixedArray)
- // -- ebx : the number of [[BoundArguments]]
- // -----------------------------------
-
- // Reserve stack space for the [[BoundArguments]].
- {
- Label done;
- __ lea(ecx, Operand(ebx, times_pointer_size, 0));
- __ sub(esp, ecx);
- // 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(esp, ecx, Heap::kRealStackLimitRootIndex);
- __ j(greater, &done, Label::kNear); // Signed comparison.
- // Restore the stack pointer.
- __ lea(esp, Operand(esp, ebx, 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.
- __ inc(eax);
-
- // Relocate arguments and return address down the stack.
- {
- Label loop;
- __ Set(ecx, 0);
- __ lea(ebx, Operand(esp, ebx, times_pointer_size, 0));
- __ bind(&loop);
- __ movd(xmm0, Operand(ebx, ecx, times_pointer_size, 0));
- __ movd(Operand(esp, ecx, times_pointer_size, 0), xmm0);
- __ inc(ecx);
- __ cmp(ecx, eax);
- __ j(less, &loop);
- }
-
- // Copy [[BoundArguments]] to the stack (below the arguments).
- {
- Label loop;
- __ mov(ecx, FieldOperand(edi, JSBoundFunction::kBoundArgumentsOffset));
- __ mov(ebx, FieldOperand(ecx, FixedArray::kLengthOffset));
- __ SmiUntag(ebx);
- __ bind(&loop);
- __ dec(ebx);
- __ movd(xmm0, FieldOperand(ecx, ebx, times_pointer_size,
- FixedArray::kHeaderSize));
- __ movd(Operand(esp, eax, times_pointer_size, 0), xmm0);
- __ lea(eax, Operand(eax, 1));
- __ j(greater, &loop);
- }
-
- // Adjust effective number of arguments (eax 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.
- __ dec(eax);
- }
- __ bind(&no_bound_arguments);
-}
-
-} // namespace
-
-
-// static
-void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
- TailCallMode tail_call_mode) {
- // ----------- S t a t e -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edi : the function to call (checked to be a JSBoundFunction)
- // -----------------------------------
- __ AssertBoundFunction(edi);
-
- if (tail_call_mode == TailCallMode::kAllow) {
- PrepareForTailCall(masm, eax, ebx, ecx, edx);
- }
-
- // Patch the receiver to [[BoundThis]].
- __ mov(ebx, FieldOperand(edi, JSBoundFunction::kBoundThisOffset));
- __ mov(Operand(esp, eax, times_pointer_size, kPointerSize), ebx);
-
- // Push the [[BoundArguments]] onto the stack.
- Generate_PushBoundArguments(masm);
-
- // Call the [[BoundTargetFunction]] via the Call builtin.
- __ mov(edi, FieldOperand(edi, JSBoundFunction::kBoundTargetFunctionOffset));
- __ mov(ecx, Operand::StaticVariable(ExternalReference(
- Builtins::kCall_ReceiverIsAny, masm->isolate())));
- __ lea(ecx, FieldOperand(ecx, Code::kHeaderSize));
- __ jmp(ecx);
-}
-
-
-// static
-void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
- TailCallMode tail_call_mode) {
- // ----------- S t a t e -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edi : the target to call (can be any Object).
- // -----------------------------------
-
- Label non_callable, non_function, non_smi;
- __ JumpIfSmi(edi, &non_callable);
- __ bind(&non_smi);
- __ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx);
- __ j(equal, masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
- RelocInfo::CODE_TARGET);
- __ CmpInstanceType(ecx, JS_BOUND_FUNCTION_TYPE);
- __ j(equal, masm->isolate()->builtins()->CallBoundFunction(tail_call_mode),
- RelocInfo::CODE_TARGET);
-
- // Check if target has a [[Call]] internal method.
- __ test_b(FieldOperand(ecx, Map::kBitFieldOffset),
- Immediate(1 << Map::kIsCallable));
- __ j(zero, &non_callable);
-
- __ CmpInstanceType(ecx, JS_PROXY_TYPE);
- __ j(not_equal, &non_function);
-
- // 0. Prepare for tail call if necessary.
- if (tail_call_mode == TailCallMode::kAllow) {
- PrepareForTailCall(masm, eax, ebx, ecx, edx);
- }
-
- // 1. Runtime fallback for Proxy [[Call]].
- __ PopReturnAddressTo(ecx);
- __ Push(edi);
- __ PushReturnAddressFrom(ecx);
- // Increase the arguments size to include the pushed function and the
- // existing receiver on the stack.
- __ add(eax, 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.
- __ mov(Operand(esp, eax, times_pointer_size, kPointerSize), edi);
- // Let the "call_as_function_delegate" take care of the rest.
- __ LoadGlobalFunction(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, edi);
- __ 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(edi);
- __ CallRuntime(Runtime::kThrowCalledNonCallable);
- }
-}
-
-
-// static
-void Builtins::Generate_ConstructFunction(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edx : the new target (checked to be a constructor)
- // -- edi : the constructor to call (checked to be a JSFunction)
- // -----------------------------------
- __ AssertFunction(edi);
-
- // Calling convention for function specific ConstructStubs require
- // ebx to contain either an AllocationSite or undefined.
- __ LoadRoot(ebx, Heap::kUndefinedValueRootIndex);
-
- // Tail call to the function-specific construct stub (still in the caller
- // context at this point).
- __ mov(ecx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- __ mov(ecx, FieldOperand(ecx, SharedFunctionInfo::kConstructStubOffset));
- __ lea(ecx, FieldOperand(ecx, Code::kHeaderSize));
- __ jmp(ecx);
-}
-
-
-// static
-void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edx : the new target (checked to be a constructor)
- // -- edi : the constructor to call (checked to be a JSBoundFunction)
- // -----------------------------------
- __ AssertBoundFunction(edi);
-
- // Push the [[BoundArguments]] onto the stack.
- Generate_PushBoundArguments(masm);
-
- // Patch new.target to [[BoundTargetFunction]] if new.target equals target.
- {
- Label done;
- __ cmp(edi, edx);
- __ j(not_equal, &done, Label::kNear);
- __ mov(edx, FieldOperand(edi, JSBoundFunction::kBoundTargetFunctionOffset));
- __ bind(&done);
- }
-
- // Construct the [[BoundTargetFunction]] via the Construct builtin.
- __ mov(edi, FieldOperand(edi, JSBoundFunction::kBoundTargetFunctionOffset));
- __ mov(ecx, Operand::StaticVariable(
- ExternalReference(Builtins::kConstruct, masm->isolate())));
- __ lea(ecx, FieldOperand(ecx, Code::kHeaderSize));
- __ jmp(ecx);
-}
-
-
-// static
-void Builtins::Generate_ConstructProxy(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edi : the constructor to call (checked to be a JSProxy)
- // -- edx : 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(ecx);
- __ Push(edi);
- __ Push(edx);
- __ PushReturnAddressFrom(ecx);
- // Include the pushed new_target, constructor and the receiver.
- __ add(eax, Immediate(3));
- // Tail-call to the runtime.
- __ JumpToExternalReference(
- ExternalReference(Runtime::kJSProxyConstruct, masm->isolate()));
-}
-
-
-// static
-void Builtins::Generate_Construct(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- eax : the number of arguments (not including the receiver)
- // -- edx : the new target (either the same as the constructor or
- // the JSFunction on which new was invoked initially)
- // -- edi : the constructor to call (can be any Object)
- // -----------------------------------
-
- // Check if target is a Smi.
- Label non_constructor;
- __ JumpIfSmi(edi, &non_constructor, Label::kNear);
-
- // Dispatch based on instance type.
- __ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx);
- __ j(equal, masm->isolate()->builtins()->ConstructFunction(),
- RelocInfo::CODE_TARGET);
-
- // Check if target has a [[Construct]] internal method.
- __ test_b(FieldOperand(ecx, Map::kBitFieldOffset),
- Immediate(1 << Map::kIsConstructor));
- __ j(zero, &non_constructor, Label::kNear);
-
- // Only dispatch to bound functions after checking whether they are
- // constructors.
- __ CmpInstanceType(ecx, JS_BOUND_FUNCTION_TYPE);
- __ j(equal, masm->isolate()->builtins()->ConstructBoundFunction(),
- RelocInfo::CODE_TARGET);
-
- // Only dispatch to proxies after checking whether they are constructors.
- __ CmpInstanceType(ecx, 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.
- __ mov(Operand(esp, eax, times_pointer_size, kPointerSize), edi);
- // Let the "call_as_constructor_delegate" take care of the rest.
- __ LoadGlobalFunction(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, edi);
- __ 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 Builtins::Generate_AllocateInNewSpace(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- edx : requested object size (untagged)
- // -- esp[0] : return address
- // -----------------------------------
- __ SmiTag(edx);
- __ PopReturnAddressTo(ecx);
- __ Push(edx);
- __ PushReturnAddressFrom(ecx);
- __ Move(esi, Smi::FromInt(0));
- __ TailCallRuntime(Runtime::kAllocateInNewSpace);
-}
-
-// static
-void Builtins::Generate_AllocateInOldSpace(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- edx : requested object size (untagged)
- // -- esp[0] : return address
- // -----------------------------------
- __ SmiTag(edx);
- __ PopReturnAddressTo(ecx);
- __ Push(edx);
- __ Push(Smi::FromInt(AllocateTargetSpace::encode(OLD_SPACE)));
- __ PushReturnAddressFrom(ecx);
- __ Move(esi, Smi::FromInt(0));
- __ TailCallRuntime(Runtime::kAllocateInTargetSpace);
-}
-
-// static
-void Builtins::Generate_StringToNumber(MacroAssembler* masm) {
- // The StringToNumber stub takes one argument in eax.
- __ AssertString(eax);
-
- // Check if string has a cached array index.
- Label runtime;
- __ test(FieldOperand(eax, String::kHashFieldOffset),
- Immediate(String::kContainsCachedArrayIndexMask));
- __ j(not_zero, &runtime, Label::kNear);
- __ mov(eax, FieldOperand(eax, String::kHashFieldOffset));
- __ IndexFromHash(eax, eax);
- __ Ret();
-
- __ bind(&runtime);
- {
- FrameScope frame(masm, StackFrame::INTERNAL);
- // Push argument.
- __ push(eax);
- // 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 eax.
- Label not_smi;
- __ JumpIfNotSmi(eax, &not_smi, Label::kNear);
- __ Ret();
- __ bind(&not_smi);
-
- Label not_heap_number;
- __ CompareMap(eax, masm->isolate()->factory()->heap_number_map());
- __ j(not_equal, &not_heap_number, Label::kNear);
- __ Ret();
- __ bind(&not_heap_number);
-
- __ Jump(masm->isolate()->builtins()->NonNumberToNumber(),
- RelocInfo::CODE_TARGET);
-}
-
-// static
-void Builtins::Generate_NonNumberToNumber(MacroAssembler* masm) {
- // The NonNumberToNumber stub takes one argument in eax.
- __ AssertNotNumber(eax);
-
- Label not_string;
- __ CmpObjectType(eax, FIRST_NONSTRING_TYPE, edi);
- // eax: object
- // edi: object map
- __ j(above_equal, &not_string, Label::kNear);
- __ Jump(masm->isolate()->builtins()->StringToNumber(),
- RelocInfo::CODE_TARGET);
- __ bind(&not_string);
-
- Label not_oddball;
- __ CmpInstanceType(edi, ODDBALL_TYPE);
- __ j(not_equal, &not_oddball, Label::kNear);
- __ mov(eax, FieldOperand(eax, Oddball::kToNumberOffset));
- __ Ret();
- __ bind(&not_oddball);
- {
- FrameScope frame(masm, StackFrame::INTERNAL);
- // Push argument.
- __ push(eax);
- // 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 -------------
- // -- eax : actual number of arguments
- // -- ebx : expected number of arguments
- // -- edx : new target (passed through to callee)
- // -- edi : function (passed through to callee)
- // -----------------------------------
-
- Label invoke, dont_adapt_arguments, stack_overflow;
- __ IncrementCounter(masm->isolate()->counters()->arguments_adaptors(), 1);
-
- Label enough, too_few;
- __ cmp(eax, ebx);
- __ j(less, &too_few);
- __ cmp(ebx, 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;
- __ lea(edi, Operand(ebp, eax, times_4, offset));
- __ mov(eax, -1); // account for receiver
-
- Label copy;
- __ bind(&copy);
- __ inc(eax);
- __ push(Operand(edi, 0));
- __ sub(edi, Immediate(kPointerSize));
- __ cmp(eax, ebx);
- __ j(less, &copy);
- // eax now contains the expected number of arguments.
- __ jmp(&invoke);
- }
-
- { // Too few parameters: Actual < expected.
- __ bind(&too_few);
- EnterArgumentsAdaptorFrame(masm);
- ArgumentsAdaptorStackCheck(masm, &stack_overflow);
-
- // Remember expected arguments in ecx.
- __ mov(ecx, ebx);
-
- // Copy receiver and all actual arguments.
- const int offset = StandardFrameConstants::kCallerSPOffset;
- __ lea(edi, Operand(ebp, eax, times_4, offset));
- // ebx = expected - actual.
- __ sub(ebx, eax);
- // eax = -actual - 1
- __ neg(eax);
- __ sub(eax, Immediate(1));
-
- Label copy;
- __ bind(&copy);
- __ inc(eax);
- __ push(Operand(edi, 0));
- __ sub(edi, Immediate(kPointerSize));
- __ test(eax, eax);
- __ j(not_zero, &copy);
-
- // Fill remaining expected arguments with undefined values.
- Label fill;
- __ bind(&fill);
- __ inc(eax);
- __ push(Immediate(masm->isolate()->factory()->undefined_value()));
- __ cmp(eax, ebx);
- __ j(less, &fill);
-
- // Restore expected arguments.
- __ mov(eax, ecx);
- }
-
- // Call the entry point.
- __ bind(&invoke);
- // Restore function pointer.
- __ mov(edi, Operand(ebp, ArgumentsAdaptorFrameConstants::kFunctionOffset));
- // eax : expected number of arguments
- // edx : new target (passed through to callee)
- // edi : function (passed through to callee)
- __ mov(ecx, FieldOperand(edi, JSFunction::kCodeEntryOffset));
- __ call(ecx);
-
- // 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);
- __ mov(ecx, FieldOperand(edi, JSFunction::kCodeEntryOffset));
- __ jmp(ecx);
-
- __ bind(&stack_overflow);
- {
- FrameScope frame(masm, StackFrame::MANUAL);
- __ CallRuntime(Runtime::kThrowStackOverflow);
- __ int3();
- }
-}
-
-
-static void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver,
- Register function_template_info,
- Register scratch0, Register scratch1,
- Label* receiver_check_failed) {
- // If there is no signature, return the holder.
- __ CompareRoot(FieldOperand(function_template_info,
- FunctionTemplateInfo::kSignatureOffset),
- Heap::kUndefinedValueRootIndex);
- Label receiver_check_passed;
- __ j(equal, &receiver_check_passed, Label::kNear);
-
- // Walk the prototype chain.
- __ mov(scratch0, FieldOperand(receiver, HeapObject::kMapOffset));
- Label prototype_loop_start;
- __ bind(&prototype_loop_start);
-
- // Get the constructor, if any.
- __ GetMapConstructor(scratch0, scratch0, scratch1);
- __ CmpInstanceType(scratch1, JS_FUNCTION_TYPE);
- Label next_prototype;
- __ j(not_equal, &next_prototype, Label::kNear);
-
- // Get the constructor's signature.
- __ mov(scratch0,
- FieldOperand(scratch0, JSFunction::kSharedFunctionInfoOffset));
- __ mov(scratch0,
- FieldOperand(scratch0, 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.
- __ cmp(scratch0, FieldOperand(function_template_info,
- FunctionTemplateInfo::kSignatureOffset));
- __ j(equal, &receiver_check_passed, Label::kNear);
-
- // If the current type is not a FunctionTemplateInfo, load the next prototype
- // in the chain.
- __ JumpIfSmi(scratch0, &next_prototype, Label::kNear);
- __ CmpObjectType(scratch0, FUNCTION_TEMPLATE_INFO_TYPE, scratch1);
- __ j(not_equal, &next_prototype, Label::kNear);
-
- // Otherwise load the parent function template and iterate.
- __ mov(scratch0,
- FieldOperand(scratch0, FunctionTemplateInfo::kParentTemplateOffset));
- __ jmp(&function_template_loop, Label::kNear);
-
- // Load the next prototype.
- __ bind(&next_prototype);
- __ mov(receiver, FieldOperand(receiver, HeapObject::kMapOffset));
- __ test(FieldOperand(receiver, Map::kBitField3Offset),
- Immediate(Map::HasHiddenPrototype::kMask));
- __ j(zero, receiver_check_failed);
-
- __ mov(receiver, FieldOperand(receiver, Map::kPrototypeOffset));
- __ mov(scratch0, 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 -------------
- // -- eax : number of arguments (not including the receiver)
- // -- edi : callee
- // -- esi : context
- // -- esp[0] : return address
- // -- esp[4] : last argument
- // -- ...
- // -- esp[eax * 4] : first argument
- // -- esp[(eax + 1) * 4] : receiver
- // -----------------------------------
-
- // Load the FunctionTemplateInfo.
- __ mov(ebx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
- __ mov(ebx, FieldOperand(ebx, SharedFunctionInfo::kFunctionDataOffset));
-
- // Do the compatible receiver check.
- Label receiver_check_failed;
- __ mov(ecx, Operand(esp, eax, times_pointer_size, kPCOnStackSize));
- __ Push(eax);
- CompatibleReceiverCheck(masm, ecx, ebx, edx, eax, &receiver_check_failed);
- __ Pop(eax);
- // Get the callback offset from the FunctionTemplateInfo, and jump to the
- // beginning of the code.
- __ mov(edx, FieldOperand(ebx, FunctionTemplateInfo::kCallCodeOffset));
- __ mov(edx, FieldOperand(edx, CallHandlerInfo::kFastHandlerOffset));
- __ add(edx, Immediate(Code::kHeaderSize - kHeapObjectTag));
- __ jmp(edx);
-
- // Compatible receiver check failed: pop return address, arguments and
- // receiver and throw an Illegal Invocation exception.
- __ bind(&receiver_check_failed);
- __ Pop(eax);
- __ PopReturnAddressTo(ebx);
- __ lea(eax, Operand(eax, times_pointer_size, 1 * kPointerSize));
- __ add(esp, eax);
- __ PushReturnAddressFrom(ebx);
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ TailCallRuntime(Runtime::kThrowIllegalInvocation);
- }
-}
-
-
-void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) {
- // Lookup the function in the JavaScript frame.
- __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset));
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
- // Pass function as argument.
- __ push(eax);
- __ CallRuntime(Runtime::kCompileForOnStackReplacement);
- }
-
- Label skip;
- // If the code object is null, just return to the unoptimized code.
- __ cmp(eax, Immediate(0));
- __ j(not_equal, &skip, Label::kNear);
- __ ret(0);
-
- __ bind(&skip);
-
- // Load deoptimization data from the code object.
- __ mov(ebx, Operand(eax, Code::kDeoptimizationDataOffset - kHeapObjectTag));
-
- // Load the OSR entrypoint offset from the deoptimization data.
- __ mov(ebx, Operand(ebx, FixedArray::OffsetOfElementAt(
- DeoptimizationInputData::kOsrPcOffsetIndex) - kHeapObjectTag));
- __ SmiUntag(ebx);
-
- // Compute the target address = code_obj + header_size + osr_offset
- __ lea(eax, Operand(eax, ebx, times_1, Code::kHeaderSize - kHeapObjectTag));
-
- // Overwrite the return address on the stack.
- __ mov(Operand(esp, 0), eax);
-
- // And "return" to the OSR entry point of the function.
- __ ret(0);
-}
-
-
-#undef __
-} // namespace internal
-} // namespace v8
-
-#endif // V8_TARGET_ARCH_IA32
« no previous file with comments | « src/counters.h ('k') | src/interpreter/interpreter.h » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698