| Index: src/arm64/builtins-arm64.cc
|
| diff --git a/src/arm64/builtins-arm64.cc b/src/arm64/builtins-arm64.cc
|
| deleted file mode 100644
|
| index 946ae2814af91ae5cb21b66868da0b1a1d9de7fa..0000000000000000000000000000000000000000
|
| --- a/src/arm64/builtins-arm64.cc
|
| +++ /dev/null
|
| @@ -1,3106 +0,0 @@
|
| -// Copyright 2013 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_ARM64
|
| -
|
| -#include "src/arm64/frames-arm64.h"
|
| -#include "src/codegen.h"
|
| -#include "src/debug/debug.h"
|
| -#include "src/deoptimizer.h"
|
| -#include "src/full-codegen/full-codegen.h"
|
| -#include "src/runtime/runtime.h"
|
| -
|
| -namespace v8 {
|
| -namespace internal {
|
| -
|
| -
|
| -#define __ ACCESS_MASM(masm)
|
| -
|
| -
|
| -// Load the built-in Array function from the current context.
|
| -static void GenerateLoadArrayFunction(MacroAssembler* masm, Register result) {
|
| - // Load the InternalArray function from the native context.
|
| - __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, result);
|
| -}
|
| -
|
| -
|
| -// Load the built-in InternalArray function from the current context.
|
| -static void GenerateLoadInternalArrayFunction(MacroAssembler* masm,
|
| - Register result) {
|
| - // Load the InternalArray function from the native context.
|
| - __ LoadNativeContextSlot(Context::INTERNAL_ARRAY_FUNCTION_INDEX, result);
|
| -}
|
| -
|
| -void Builtins::Generate_Adaptor(MacroAssembler* masm, CFunctionId id,
|
| - ExitFrameType exit_frame_type) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : number of arguments excluding receiver
|
| - // -- x1 : target
|
| - // -- x3 : new target
|
| - // -- sp[0] : last argument
|
| - // -- ...
|
| - // -- sp[4 * (argc - 1)] : first argument
|
| - // -- sp[4 * argc] : receiver
|
| - // -----------------------------------
|
| - __ AssertFunction(x1);
|
| -
|
| - // 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).
|
| - __ Ldr(cp, FieldMemOperand(x1, JSFunction::kContextOffset));
|
| -
|
| - // JumpToExternalReference expects x0 to contain the number of arguments
|
| - // including the receiver and the extra arguments.
|
| - const int num_extra_args = 3;
|
| - __ Add(x0, x0, num_extra_args + 1);
|
| -
|
| - // Insert extra arguments.
|
| - __ SmiTag(x0);
|
| - __ Push(x0, x1, x3);
|
| - __ SmiUntag(x0);
|
| -
|
| - __ JumpToExternalReference(ExternalReference(id, masm->isolate()),
|
| - exit_frame_type == BUILTIN_EXIT);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : number of arguments
|
| - // -- lr : return address
|
| - // -- sp[...]: constructor arguments
|
| - // -----------------------------------
|
| - ASM_LOCATION("Builtins::Generate_InternalArrayCode");
|
| - Label generic_array_code;
|
| -
|
| - // Get the InternalArray function.
|
| - GenerateLoadInternalArrayFunction(masm, x1);
|
| -
|
| - if (FLAG_debug_code) {
|
| - // Initial map for the builtin InternalArray functions should be maps.
|
| - __ Ldr(x10, FieldMemOperand(x1, JSFunction::kPrototypeOrInitialMapOffset));
|
| - __ Tst(x10, kSmiTagMask);
|
| - __ Assert(ne, kUnexpectedInitialMapForInternalArrayFunction);
|
| - __ CompareObjectType(x10, x11, x12, MAP_TYPE);
|
| - __ Assert(eq, kUnexpectedInitialMapForInternalArrayFunction);
|
| - }
|
| -
|
| - // Run the native code for the InternalArray function called as a normal
|
| - // function.
|
| - InternalArrayConstructorStub stub(masm->isolate());
|
| - __ TailCallStub(&stub);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_ArrayCode(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : number of arguments
|
| - // -- lr : return address
|
| - // -- sp[...]: constructor arguments
|
| - // -----------------------------------
|
| - ASM_LOCATION("Builtins::Generate_ArrayCode");
|
| - Label generic_array_code, one_or_more_arguments, two_or_more_arguments;
|
| -
|
| - // Get the Array function.
|
| - GenerateLoadArrayFunction(masm, x1);
|
| -
|
| - if (FLAG_debug_code) {
|
| - // Initial map for the builtin Array functions should be maps.
|
| - __ Ldr(x10, FieldMemOperand(x1, JSFunction::kPrototypeOrInitialMapOffset));
|
| - __ Tst(x10, kSmiTagMask);
|
| - __ Assert(ne, kUnexpectedInitialMapForArrayFunction);
|
| - __ CompareObjectType(x10, x11, x12, MAP_TYPE);
|
| - __ Assert(eq, kUnexpectedInitialMapForArrayFunction);
|
| - }
|
| -
|
| - // Run the native code for the Array function called as a normal function.
|
| - __ LoadRoot(x2, Heap::kUndefinedValueRootIndex);
|
| - __ Mov(x3, x1);
|
| - ArrayConstructorStub stub(masm->isolate());
|
| - __ TailCallStub(&stub);
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : number of arguments
|
| - // -- x1 : function
|
| - // -- cp : context
|
| - // -- lr : return address
|
| - // -- sp[(argc - n - 1) * 8] : arg[n] (zero-based)
|
| - // -- sp[argc * 8] : receiver
|
| - // -----------------------------------
|
| - ASM_LOCATION("Builtins::Generate_MathMaxMin");
|
| -
|
| - Heap::RootListIndex const root_index =
|
| - (kind == MathMaxMinKind::kMin) ? Heap::kInfinityValueRootIndex
|
| - : Heap::kMinusInfinityValueRootIndex;
|
| -
|
| - // Load the accumulator with the default return value (either -Infinity or
|
| - // +Infinity), with the tagged value in x5 and the double value in d5.
|
| - __ LoadRoot(x5, root_index);
|
| - __ Ldr(d5, FieldMemOperand(x5, HeapNumber::kValueOffset));
|
| -
|
| - Label done_loop, loop;
|
| - __ mov(x4, x0);
|
| - __ Bind(&loop);
|
| - {
|
| - // Check if all parameters done.
|
| - __ Subs(x4, x4, 1);
|
| - __ B(lt, &done_loop);
|
| -
|
| - // Load the next parameter tagged value into x2.
|
| - __ Peek(x2, Operand(x4, LSL, kPointerSizeLog2));
|
| -
|
| - // Load the double value of the parameter into d2, maybe converting the
|
| - // parameter to a number first using the ToNumber builtin if necessary.
|
| - Label convert_smi, convert_number, done_convert;
|
| - __ JumpIfSmi(x2, &convert_smi);
|
| - __ JumpIfHeapNumber(x2, &convert_number);
|
| - {
|
| - // Parameter is not a Number, use the ToNumber builtin to convert it.
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ SmiTag(x0);
|
| - __ SmiTag(x4);
|
| - __ EnterBuiltinFrame(cp, x1, x0);
|
| - __ Push(x5, x4);
|
| - __ Mov(x0, x2);
|
| - __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
|
| - __ Mov(x2, x0);
|
| - __ Pop(x4, x5);
|
| - __ LeaveBuiltinFrame(cp, x1, x0);
|
| - __ SmiUntag(x4);
|
| - __ SmiUntag(x0);
|
| - {
|
| - // Restore the double accumulator value (d5).
|
| - Label done_restore;
|
| - __ SmiUntagToDouble(d5, x5, kSpeculativeUntag);
|
| - __ JumpIfSmi(x5, &done_restore);
|
| - __ Ldr(d5, FieldMemOperand(x5, HeapNumber::kValueOffset));
|
| - __ Bind(&done_restore);
|
| - }
|
| - }
|
| - __ AssertNumber(x2);
|
| - __ JumpIfSmi(x2, &convert_smi);
|
| -
|
| - __ Bind(&convert_number);
|
| - __ Ldr(d2, FieldMemOperand(x2, HeapNumber::kValueOffset));
|
| - __ B(&done_convert);
|
| -
|
| - __ Bind(&convert_smi);
|
| - __ SmiUntagToDouble(d2, x2);
|
| - __ Bind(&done_convert);
|
| -
|
| - // We can use a single fmin/fmax for the operation itself, but we then need
|
| - // to work out which HeapNumber (or smi) the result came from.
|
| - __ Fmov(x11, d5);
|
| - if (kind == MathMaxMinKind::kMin) {
|
| - __ Fmin(d5, d5, d2);
|
| - } else {
|
| - DCHECK(kind == MathMaxMinKind::kMax);
|
| - __ Fmax(d5, d5, d2);
|
| - }
|
| - __ Fmov(x10, d5);
|
| - __ Cmp(x10, x11);
|
| - __ Csel(x5, x5, x2, eq);
|
| - __ B(&loop);
|
| - }
|
| -
|
| - __ Bind(&done_loop);
|
| - // Drop all slots, including the receiver.
|
| - __ Add(x0, x0, 1);
|
| - __ Drop(x0);
|
| - __ Mov(x0, x5);
|
| - __ Ret();
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_NumberConstructor(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : number of arguments
|
| - // -- x1 : constructor function
|
| - // -- cp : context
|
| - // -- lr : return address
|
| - // -- sp[(argc - n - 1) * 8] : arg[n] (zero based)
|
| - // -- sp[argc * 8] : receiver
|
| - // -----------------------------------
|
| - ASM_LOCATION("Builtins::Generate_NumberConstructor");
|
| -
|
| - // 1. Load the first argument into x0.
|
| - Label no_arguments;
|
| - {
|
| - __ Cbz(x0, &no_arguments);
|
| - __ Mov(x2, x0); // Store argc in x2.
|
| - __ Sub(x0, x0, 1);
|
| - __ Ldr(x0, MemOperand(jssp, x0, LSL, kPointerSizeLog2));
|
| - }
|
| -
|
| - // 2a. Convert first argument to number.
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ SmiTag(x2);
|
| - __ EnterBuiltinFrame(cp, x1, x2);
|
| - __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
|
| - __ LeaveBuiltinFrame(cp, x1, x2);
|
| - __ SmiUntag(x2);
|
| - }
|
| -
|
| - {
|
| - // Drop all arguments.
|
| - __ Drop(x2);
|
| - }
|
| -
|
| - // 2b. No arguments, return +0 (already in x0).
|
| - __ Bind(&no_arguments);
|
| - __ Drop(1);
|
| - __ Ret();
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : number of arguments
|
| - // -- x1 : constructor function
|
| - // -- x3 : new target
|
| - // -- cp : context
|
| - // -- lr : return address
|
| - // -- sp[(argc - n - 1) * 8] : arg[n] (zero based)
|
| - // -- sp[argc * 8] : receiver
|
| - // -----------------------------------
|
| - ASM_LOCATION("Builtins::Generate_NumberConstructor_ConstructStub");
|
| -
|
| - // 1. Make sure we operate in the context of the called function.
|
| - __ Ldr(cp, FieldMemOperand(x1, JSFunction::kContextOffset));
|
| -
|
| - // 2. Load the first argument into x2.
|
| - {
|
| - Label no_arguments, done;
|
| - __ Move(x6, x0); // Store argc in x6.
|
| - __ Cbz(x0, &no_arguments);
|
| - __ Sub(x0, x0, 1);
|
| - __ Ldr(x2, MemOperand(jssp, x0, LSL, kPointerSizeLog2));
|
| - __ B(&done);
|
| - __ Bind(&no_arguments);
|
| - __ Mov(x2, Smi::FromInt(0));
|
| - __ Bind(&done);
|
| - }
|
| -
|
| - // 3. Make sure x2 is a number.
|
| - {
|
| - Label done_convert;
|
| - __ JumpIfSmi(x2, &done_convert);
|
| - __ JumpIfObjectType(x2, x4, x4, HEAP_NUMBER_TYPE, &done_convert, eq);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ SmiTag(x6);
|
| - __ EnterBuiltinFrame(cp, x1, x6);
|
| - __ Push(x3);
|
| - __ Move(x0, x2);
|
| - __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
|
| - __ Move(x2, x0);
|
| - __ Pop(x3);
|
| - __ LeaveBuiltinFrame(cp, x1, x6);
|
| - __ SmiUntag(x6);
|
| - }
|
| - __ Bind(&done_convert);
|
| - }
|
| -
|
| - // 4. Check if new target and constructor differ.
|
| - Label drop_frame_and_ret, new_object;
|
| - __ Cmp(x1, x3);
|
| - __ B(ne, &new_object);
|
| -
|
| - // 5. Allocate a JSValue wrapper for the number.
|
| - __ AllocateJSValue(x0, x1, x2, x4, x5, &new_object);
|
| - __ B(&drop_frame_and_ret);
|
| -
|
| - // 6. Fallback to the runtime to create new object.
|
| - __ bind(&new_object);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - FastNewObjectStub stub(masm->isolate());
|
| - __ SmiTag(x6);
|
| - __ EnterBuiltinFrame(cp, x1, x6);
|
| - __ Push(x2); // first argument
|
| - __ CallStub(&stub);
|
| - __ Pop(x2);
|
| - __ LeaveBuiltinFrame(cp, x1, x6);
|
| - __ SmiUntag(x6);
|
| - }
|
| - __ Str(x2, FieldMemOperand(x0, JSValue::kValueOffset));
|
| -
|
| - __ bind(&drop_frame_and_ret);
|
| - {
|
| - __ Drop(x6);
|
| - __ Drop(1);
|
| - __ Ret();
|
| - }
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_StringConstructor(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : number of arguments
|
| - // -- x1 : constructor function
|
| - // -- cp : context
|
| - // -- lr : return address
|
| - // -- sp[(argc - n - 1) * 8] : arg[n] (zero based)
|
| - // -- sp[argc * 8] : receiver
|
| - // -----------------------------------
|
| - ASM_LOCATION("Builtins::Generate_StringConstructor");
|
| -
|
| - // 1. Load the first argument into x0.
|
| - Label no_arguments;
|
| - {
|
| - __ Cbz(x0, &no_arguments);
|
| - __ Mov(x2, x0); // Store argc in x2.
|
| - __ Sub(x0, x0, 1);
|
| - __ Ldr(x0, MemOperand(jssp, x0, LSL, kPointerSizeLog2));
|
| - }
|
| -
|
| - // 2a. At least one argument, return x0 if it's a string, otherwise
|
| - // dispatch to appropriate conversion.
|
| - Label drop_frame_and_ret, to_string, symbol_descriptive_string;
|
| - {
|
| - __ JumpIfSmi(x0, &to_string);
|
| - STATIC_ASSERT(FIRST_NONSTRING_TYPE == SYMBOL_TYPE);
|
| - __ CompareObjectType(x0, x3, x3, FIRST_NONSTRING_TYPE);
|
| - __ B(hi, &to_string);
|
| - __ B(eq, &symbol_descriptive_string);
|
| - __ b(&drop_frame_and_ret);
|
| - }
|
| -
|
| - // 2b. No arguments, return the empty string (and pop the receiver).
|
| - __ Bind(&no_arguments);
|
| - {
|
| - __ LoadRoot(x0, Heap::kempty_stringRootIndex);
|
| - __ Drop(1);
|
| - __ Ret();
|
| - }
|
| -
|
| - // 3a. Convert x0 to a string.
|
| - __ Bind(&to_string);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - ToStringStub stub(masm->isolate());
|
| - __ SmiTag(x2);
|
| - __ EnterBuiltinFrame(cp, x1, x2);
|
| - __ CallStub(&stub);
|
| - __ LeaveBuiltinFrame(cp, x1, x2);
|
| - __ SmiUntag(x2);
|
| - }
|
| - __ b(&drop_frame_and_ret);
|
| -
|
| - // 3b. Convert symbol in x0 to a string.
|
| - __ Bind(&symbol_descriptive_string);
|
| - {
|
| - __ Drop(x2);
|
| - __ Drop(1);
|
| - __ Push(x0);
|
| - __ TailCallRuntime(Runtime::kSymbolDescriptiveString);
|
| - }
|
| -
|
| - __ bind(&drop_frame_and_ret);
|
| - {
|
| - __ Drop(x2);
|
| - __ Drop(1);
|
| - __ Ret();
|
| - }
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : number of arguments
|
| - // -- x1 : constructor function
|
| - // -- x3 : new target
|
| - // -- cp : context
|
| - // -- lr : return address
|
| - // -- sp[(argc - n - 1) * 8] : arg[n] (zero based)
|
| - // -- sp[argc * 8] : receiver
|
| - // -----------------------------------
|
| - ASM_LOCATION("Builtins::Generate_StringConstructor_ConstructStub");
|
| -
|
| - // 1. Make sure we operate in the context of the called function.
|
| - __ Ldr(cp, FieldMemOperand(x1, JSFunction::kContextOffset));
|
| -
|
| - // 2. Load the first argument into x2.
|
| - {
|
| - Label no_arguments, done;
|
| - __ mov(x6, x0); // Store argc in x6.
|
| - __ Cbz(x0, &no_arguments);
|
| - __ Sub(x0, x0, 1);
|
| - __ Ldr(x2, MemOperand(jssp, x0, LSL, kPointerSizeLog2));
|
| - __ B(&done);
|
| - __ Bind(&no_arguments);
|
| - __ LoadRoot(x2, Heap::kempty_stringRootIndex);
|
| - __ Bind(&done);
|
| - }
|
| -
|
| - // 3. Make sure x2 is a string.
|
| - {
|
| - Label convert, done_convert;
|
| - __ JumpIfSmi(x2, &convert);
|
| - __ JumpIfObjectType(x2, x4, x4, FIRST_NONSTRING_TYPE, &done_convert, lo);
|
| - __ Bind(&convert);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - ToStringStub stub(masm->isolate());
|
| - __ SmiTag(x6);
|
| - __ EnterBuiltinFrame(cp, x1, x6);
|
| - __ Push(x3);
|
| - __ Move(x0, x2);
|
| - __ CallStub(&stub);
|
| - __ Move(x2, x0);
|
| - __ Pop(x3);
|
| - __ LeaveBuiltinFrame(cp, x1, x6);
|
| - __ SmiUntag(x6);
|
| - }
|
| - __ Bind(&done_convert);
|
| - }
|
| -
|
| - // 4. Check if new target and constructor differ.
|
| - Label drop_frame_and_ret, new_object;
|
| - __ Cmp(x1, x3);
|
| - __ B(ne, &new_object);
|
| -
|
| - // 5. Allocate a JSValue wrapper for the string.
|
| - __ AllocateJSValue(x0, x1, x2, x4, x5, &new_object);
|
| - __ B(&drop_frame_and_ret);
|
| -
|
| - // 6. Fallback to the runtime to create new object.
|
| - __ bind(&new_object);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - FastNewObjectStub stub(masm->isolate());
|
| - __ SmiTag(x6);
|
| - __ EnterBuiltinFrame(cp, x1, x6);
|
| - __ Push(x2); // first argument
|
| - __ CallStub(&stub);
|
| - __ Pop(x2);
|
| - __ LeaveBuiltinFrame(cp, x1, x6);
|
| - __ SmiUntag(x6);
|
| - }
|
| - __ Str(x2, FieldMemOperand(x0, JSValue::kValueOffset));
|
| -
|
| - __ bind(&drop_frame_and_ret);
|
| - {
|
| - __ Drop(x6);
|
| - __ Drop(1);
|
| - __ Ret();
|
| - }
|
| -}
|
| -
|
| -static void GenerateTailCallToSharedCode(MacroAssembler* masm) {
|
| - __ Ldr(x2, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(x2, FieldMemOperand(x2, SharedFunctionInfo::kCodeOffset));
|
| - __ Add(x2, x2, Code::kHeaderSize - kHeapObjectTag);
|
| - __ Br(x2);
|
| -}
|
| -
|
| -static void GenerateTailCallToReturnedCode(MacroAssembler* masm,
|
| - Runtime::FunctionId function_id) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argument count (preserved for callee)
|
| - // -- x1 : target function (preserved for callee)
|
| - // -- x3 : new target (preserved for callee)
|
| - // -----------------------------------
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - // Push a copy of the target function and the new target.
|
| - // Push another copy as a parameter to the runtime call.
|
| - __ SmiTag(x0);
|
| - __ Push(x0, x1, x3, x1);
|
| -
|
| - __ CallRuntime(function_id, 1);
|
| - __ Move(x2, x0);
|
| -
|
| - // Restore target function and new target.
|
| - __ Pop(x3, x1, x0);
|
| - __ SmiUntag(x0);
|
| - }
|
| -
|
| - __ Add(x2, x2, Code::kHeaderSize - kHeapObjectTag);
|
| - __ Br(x2);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) {
|
| - // Checking whether the queued function is ready for install is optional,
|
| - // since we come across interrupts and stack checks elsewhere. However, not
|
| - // checking may delay installing ready functions, and always checking would be
|
| - // quite expensive. A good compromise is to first check against stack limit as
|
| - // a cue for an interrupt signal.
|
| - Label ok;
|
| - __ CompareRoot(masm->StackPointer(), Heap::kStackLimitRootIndex);
|
| - __ B(hs, &ok);
|
| -
|
| - GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
|
| -
|
| - __ Bind(&ok);
|
| - GenerateTailCallToSharedCode(masm);
|
| -}
|
| -
|
| -
|
| -static void Generate_JSConstructStubHelper(MacroAssembler* masm,
|
| - bool is_api_function,
|
| - bool create_implicit_receiver,
|
| - bool check_derived_construct) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : number of arguments
|
| - // -- x1 : constructor function
|
| - // -- x2 : allocation site or undefined
|
| - // -- x3 : new target
|
| - // -- lr : return address
|
| - // -- cp : context pointer
|
| - // -- sp[...]: constructor arguments
|
| - // -----------------------------------
|
| -
|
| - ASM_LOCATION("Builtins::Generate_JSConstructStubHelper");
|
| -
|
| - Isolate* isolate = masm->isolate();
|
| -
|
| - // Enter a construct frame.
|
| - {
|
| - FrameScope scope(masm, StackFrame::CONSTRUCT);
|
| -
|
| - // Preserve the four incoming parameters on the stack.
|
| - Register argc = x0;
|
| - Register constructor = x1;
|
| - Register allocation_site = x2;
|
| - Register new_target = x3;
|
| -
|
| - // Preserve the incoming parameters on the stack.
|
| - __ AssertUndefinedOrAllocationSite(allocation_site, x10);
|
| - __ Push(cp);
|
| - __ SmiTag(argc);
|
| - __ Push(allocation_site, argc);
|
| -
|
| - if (create_implicit_receiver) {
|
| - // Allocate the new receiver object.
|
| - __ Push(constructor, new_target);
|
| - FastNewObjectStub stub(masm->isolate());
|
| - __ CallStub(&stub);
|
| - __ Mov(x4, x0);
|
| - __ Pop(new_target, constructor);
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- x1: constructor function
|
| - // -- x3: new target
|
| - // -- x4: newly allocated object
|
| - // -----------------------------------
|
| -
|
| - // Reload the number of arguments from the stack.
|
| - // Set it up in x0 for the function call below.
|
| - // jssp[0]: number of arguments (smi-tagged)
|
| - __ Peek(argc, 0); // Load number of arguments.
|
| - }
|
| -
|
| - __ SmiUntag(argc);
|
| -
|
| - 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(x4, x4);
|
| - } else {
|
| - __ PushRoot(Heap::kTheHoleValueRootIndex);
|
| - }
|
| -
|
| - // Set up pointer to last argument.
|
| - __ Add(x2, fp, StandardFrameConstants::kCallerSPOffset);
|
| -
|
| - // Copy arguments and receiver to the expression stack.
|
| - // Copy 2 values every loop to use ldp/stp.
|
| - // x0: number of arguments
|
| - // x1: constructor function
|
| - // x2: address of last argument (caller sp)
|
| - // x3: new target
|
| - // jssp[0]: receiver
|
| - // jssp[1]: receiver
|
| - // jssp[2]: number of arguments (smi-tagged)
|
| - // Compute the start address of the copy in x3.
|
| - __ Add(x4, x2, Operand(argc, LSL, kPointerSizeLog2));
|
| - Label loop, entry, done_copying_arguments;
|
| - __ B(&entry);
|
| - __ Bind(&loop);
|
| - __ Ldp(x10, x11, MemOperand(x4, -2 * kPointerSize, PreIndex));
|
| - __ Push(x11, x10);
|
| - __ Bind(&entry);
|
| - __ Cmp(x4, x2);
|
| - __ B(gt, &loop);
|
| - // Because we copied values 2 by 2 we may have copied one extra value.
|
| - // Drop it if that is the case.
|
| - __ B(eq, &done_copying_arguments);
|
| - __ Drop(1);
|
| - __ Bind(&done_copying_arguments);
|
| -
|
| - // Call the function.
|
| - // x0: number of arguments
|
| - // x1: constructor function
|
| - // x3: new target
|
| - ParameterCount actual(argc);
|
| - __ InvokeFunction(constructor, new_target, 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 the context from the frame.
|
| - // x0: result
|
| - // jssp[0]: receiver
|
| - // jssp[1]: number of arguments (smi-tagged)
|
| - __ Ldr(cp, MemOperand(fp, ConstructFrameConstants::kContextOffset));
|
| -
|
| - if (create_implicit_receiver) {
|
| - // If the result is an object (in the ECMA sense), we should get rid
|
| - // of the receiver and use the result; see ECMA-262 section 13.2.2-7
|
| - // on page 74.
|
| - Label use_receiver, exit;
|
| -
|
| - // If the result is a smi, it is *not* an object in the ECMA sense.
|
| - // x0: result
|
| - // jssp[0]: receiver (newly allocated object)
|
| - // jssp[1]: number of arguments (smi-tagged)
|
| - __ JumpIfSmi(x0, &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.
|
| - __ JumpIfObjectType(x0, x1, x3, FIRST_JS_RECEIVER_TYPE, &exit, ge);
|
| -
|
| - // Throw away the result of the constructor invocation and use the
|
| - // on-stack receiver as the result.
|
| - __ Bind(&use_receiver);
|
| - __ Peek(x0, 0);
|
| -
|
| - // Remove the receiver from the stack, remove caller arguments, and
|
| - // return.
|
| - __ Bind(&exit);
|
| - // x0: result
|
| - // jssp[0]: receiver (newly allocated object)
|
| - // jssp[1]: number of arguments (smi-tagged)
|
| - __ Peek(x1, 1 * kXRegSize);
|
| - } else {
|
| - __ Peek(x1, 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(x0, &dont_throw);
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ CallRuntime(Runtime::kThrowDerivedConstructorReturnedNonObject);
|
| - }
|
| - __ Bind(&dont_throw);
|
| - }
|
| -
|
| - __ DropBySMI(x1);
|
| - __ Drop(1);
|
| - if (create_implicit_receiver) {
|
| - __ IncrementCounter(isolate->counters()->constructed_objects(), 1, x1, x2);
|
| - }
|
| - __ Ret();
|
| -}
|
| -
|
| -
|
| -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(x1);
|
| - __ CallRuntime(Runtime::kThrowConstructedNonConstructable);
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_ResumeGeneratorTrampoline(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the value to pass to the generator
|
| - // -- x1 : the JSGeneratorObject to resume
|
| - // -- x2 : the resume mode (tagged)
|
| - // -- lr : return address
|
| - // -----------------------------------
|
| - __ AssertGeneratorObject(x1);
|
| -
|
| - // Store input value into generator object.
|
| - __ Str(x0, FieldMemOperand(x1, JSGeneratorObject::kInputOrDebugPosOffset));
|
| - __ RecordWriteField(x1, JSGeneratorObject::kInputOrDebugPosOffset, x0, x3,
|
| - kLRHasNotBeenSaved, kDontSaveFPRegs);
|
| -
|
| - // Store resume mode into generator object.
|
| - __ Str(x2, FieldMemOperand(x1, JSGeneratorObject::kResumeModeOffset));
|
| -
|
| - // Load suspended function and context.
|
| - __ Ldr(cp, FieldMemOperand(x1, JSGeneratorObject::kContextOffset));
|
| - __ Ldr(x4, FieldMemOperand(x1, 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);
|
| - __ Mov(x10, Operand(last_step_action));
|
| - __ Ldrsb(x10, MemOperand(x10));
|
| - __ CompareAndBranch(x10, Operand(StepIn), ge, &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());
|
| - __ Mov(x10, Operand(debug_suspended_generator));
|
| - __ Ldr(x10, MemOperand(x10));
|
| - __ CompareAndBranch(x10, Operand(x1), eq,
|
| - &prepare_step_in_suspended_generator);
|
| - __ Bind(&stepping_prepared);
|
| -
|
| - // Push receiver.
|
| - __ Ldr(x5, FieldMemOperand(x1, JSGeneratorObject::kReceiverOffset));
|
| - __ Push(x5);
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- x1 : the JSGeneratorObject to resume
|
| - // -- x2 : the resume mode (tagged)
|
| - // -- x4 : generator function
|
| - // -- cp : generator context
|
| - // -- lr : return address
|
| - // -- jssp[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.
|
| - __ Ldr(x10, FieldMemOperand(x4, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(w10,
|
| - FieldMemOperand(x10, SharedFunctionInfo::kFormalParameterCountOffset));
|
| - __ LoadRoot(x11, Heap::kTheHoleValueRootIndex);
|
| - __ PushMultipleTimes(x11, w10);
|
| -
|
| - // Dispatch on the kind of generator object.
|
| - Label old_generator;
|
| - __ Ldr(x3, FieldMemOperand(x4, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(x3, FieldMemOperand(x3, SharedFunctionInfo::kFunctionDataOffset));
|
| - __ CompareObjectType(x3, x3, x3, BYTECODE_ARRAY_TYPE);
|
| - __ B(ne, &old_generator);
|
| -
|
| - // New-style (ignition/turbofan) generator object
|
| - {
|
| - __ Ldr(x0, FieldMemOperand(x4, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(w0,
|
| - FieldMemOperand(x0, 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.
|
| - __ Move(x3, x1);
|
| - __ Move(x1, x4);
|
| - __ Ldr(x5, FieldMemOperand(x1, JSFunction::kCodeEntryOffset));
|
| - __ Jump(x5);
|
| - }
|
| -
|
| - // 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);
|
| - __ Push(lr, fp);
|
| - __ Move(fp, jssp);
|
| - __ Push(cp, x4);
|
| -
|
| - // Restore the operand stack.
|
| - __ Ldr(x0, FieldMemOperand(x1, JSGeneratorObject::kOperandStackOffset));
|
| - __ Ldr(w3, UntagSmiFieldMemOperand(x0, FixedArray::kLengthOffset));
|
| - __ Add(x0, x0, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
|
| - __ Add(x3, x0, Operand(x3, LSL, kPointerSizeLog2));
|
| - {
|
| - Label done_loop, loop;
|
| - __ Bind(&loop);
|
| - __ Cmp(x0, x3);
|
| - __ B(eq, &done_loop);
|
| - __ Ldr(x10, MemOperand(x0, kPointerSize, PostIndex));
|
| - __ Push(x10);
|
| - __ B(&loop);
|
| - __ Bind(&done_loop);
|
| - }
|
| -
|
| - // Reset operand stack so we don't leak.
|
| - __ LoadRoot(x10, Heap::kEmptyFixedArrayRootIndex);
|
| - __ Str(x10, FieldMemOperand(x1, JSGeneratorObject::kOperandStackOffset));
|
| -
|
| - // Resume the generator function at the continuation.
|
| - __ Ldr(x10, FieldMemOperand(x4, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(x10, FieldMemOperand(x10, SharedFunctionInfo::kCodeOffset));
|
| - __ Add(x10, x10, Code::kHeaderSize - kHeapObjectTag);
|
| - __ Ldrsw(x11,
|
| - UntagSmiFieldMemOperand(x1, JSGeneratorObject::kContinuationOffset));
|
| - __ Add(x10, x10, x11);
|
| - __ Mov(x12, Smi::FromInt(JSGeneratorObject::kGeneratorExecuting));
|
| - __ Str(x12, FieldMemOperand(x1, JSGeneratorObject::kContinuationOffset));
|
| - __ Move(x0, x1); // Continuation expects generator object in x0.
|
| - __ Br(x10);
|
| - }
|
| -
|
| - __ Bind(&prepare_step_in_if_stepping);
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ Push(x1, x2, x4);
|
| - __ CallRuntime(Runtime::kDebugPrepareStepInIfStepping);
|
| - __ Pop(x2, x1);
|
| - __ Ldr(x4, FieldMemOperand(x1, JSGeneratorObject::kFunctionOffset));
|
| - }
|
| - __ B(&stepping_prepared);
|
| -
|
| - __ Bind(&prepare_step_in_suspended_generator);
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ Push(x1, x2);
|
| - __ CallRuntime(Runtime::kDebugPrepareStepInSuspendedGenerator);
|
| - __ Pop(x2, x1);
|
| - __ Ldr(x4, FieldMemOperand(x1, JSGeneratorObject::kFunctionOffset));
|
| - }
|
| - __ B(&stepping_prepared);
|
| -}
|
| -
|
| -enum IsTagged { kArgcIsSmiTagged, kArgcIsUntaggedInt };
|
| -
|
| -
|
| -// Clobbers x10, x15; preserves all other registers.
|
| -static void Generate_CheckStackOverflow(MacroAssembler* masm, Register argc,
|
| - IsTagged argc_is_tagged) {
|
| - // Check the stack for overflow.
|
| - // We are not trying to catch interruptions (e.g. debug break and
|
| - // preemption) here, so the "real stack limit" is checked.
|
| - Label enough_stack_space;
|
| - __ LoadRoot(x10, Heap::kRealStackLimitRootIndex);
|
| - // Make x10 the space we have left. The stack might already be overflowed
|
| - // here which will cause x10 to become negative.
|
| - // TODO(jbramley): Check that the stack usage here is safe.
|
| - __ Sub(x10, jssp, x10);
|
| - // Check if the arguments will overflow the stack.
|
| - if (argc_is_tagged == kArgcIsSmiTagged) {
|
| - __ Cmp(x10, Operand::UntagSmiAndScale(argc, kPointerSizeLog2));
|
| - } else {
|
| - DCHECK(argc_is_tagged == kArgcIsUntaggedInt);
|
| - __ Cmp(x10, Operand(argc, LSL, kPointerSizeLog2));
|
| - }
|
| - __ B(gt, &enough_stack_space);
|
| - __ CallRuntime(Runtime::kThrowStackOverflow);
|
| - // We should never return from the APPLY_OVERFLOW builtin.
|
| - if (__ emit_debug_code()) {
|
| - __ Unreachable();
|
| - }
|
| -
|
| - __ Bind(&enough_stack_space);
|
| -}
|
| -
|
| -
|
| -// Input:
|
| -// x0: new.target.
|
| -// x1: function.
|
| -// x2: receiver.
|
| -// x3: argc.
|
| -// x4: argv.
|
| -// Output:
|
| -// x0: result.
|
| -static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm,
|
| - bool is_construct) {
|
| - // Called from JSEntryStub::GenerateBody().
|
| - Register new_target = x0;
|
| - Register function = x1;
|
| - Register receiver = x2;
|
| - Register argc = x3;
|
| - Register argv = x4;
|
| - Register scratch = x10;
|
| -
|
| - ProfileEntryHookStub::MaybeCallEntryHook(masm);
|
| -
|
| - {
|
| - // Enter an internal frame.
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| -
|
| - // Setup the context (we need to use the caller context from the isolate).
|
| - __ Mov(scratch, Operand(ExternalReference(Isolate::kContextAddress,
|
| - masm->isolate())));
|
| - __ Ldr(cp, MemOperand(scratch));
|
| -
|
| - __ InitializeRootRegister();
|
| -
|
| - // Push the function and the receiver onto the stack.
|
| - __ Push(function, receiver);
|
| -
|
| - // Check if we have enough stack space to push all arguments.
|
| - // Expects argument count in eax. Clobbers ecx, edx, edi.
|
| - Generate_CheckStackOverflow(masm, argc, kArgcIsUntaggedInt);
|
| -
|
| - // Copy arguments to the stack in a loop, in reverse order.
|
| - // x3: argc.
|
| - // x4: argv.
|
| - Label loop, entry;
|
| - // Compute the copy end address.
|
| - __ Add(scratch, argv, Operand(argc, LSL, kPointerSizeLog2));
|
| -
|
| - __ B(&entry);
|
| - __ Bind(&loop);
|
| - __ Ldr(x11, MemOperand(argv, kPointerSize, PostIndex));
|
| - __ Ldr(x12, MemOperand(x11)); // Dereference the handle.
|
| - __ Push(x12); // Push the argument.
|
| - __ Bind(&entry);
|
| - __ Cmp(scratch, argv);
|
| - __ B(ne, &loop);
|
| -
|
| - __ Mov(scratch, argc);
|
| - __ Mov(argc, new_target);
|
| - __ Mov(new_target, scratch);
|
| - // x0: argc.
|
| - // x3: new.target.
|
| -
|
| - // Initialize all JavaScript callee-saved registers, since they will be seen
|
| - // by the garbage collector as part of handlers.
|
| - // The original values have been saved in JSEntryStub::GenerateBody().
|
| - __ LoadRoot(x19, Heap::kUndefinedValueRootIndex);
|
| - __ Mov(x20, x19);
|
| - __ Mov(x21, x19);
|
| - __ Mov(x22, x19);
|
| - __ Mov(x23, x19);
|
| - __ Mov(x24, x19);
|
| - __ Mov(x25, x19);
|
| - // Don't initialize the reserved registers.
|
| - // x26 : root register (root).
|
| - // x27 : context pointer (cp).
|
| - // x28 : JS stack pointer (jssp).
|
| - // x29 : frame pointer (fp).
|
| -
|
| - Handle<Code> builtin = is_construct
|
| - ? masm->isolate()->builtins()->Construct()
|
| - : masm->isolate()->builtins()->Call();
|
| - __ Call(builtin, RelocInfo::CODE_TARGET);
|
| -
|
| - // Exit the JS internal frame and remove the parameters (except function),
|
| - // and return.
|
| - }
|
| -
|
| - // Result is in x0. Return.
|
| - __ Ret();
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) {
|
| - Generate_JSEntryTrampolineHelper(masm, false);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) {
|
| - Generate_JSEntryTrampolineHelper(masm, true);
|
| -}
|
| -
|
| -static void LeaveInterpreterFrame(MacroAssembler* masm, Register scratch) {
|
| - Register args_count = scratch;
|
| -
|
| - // Get the arguments + receiver count.
|
| - __ ldr(args_count,
|
| - MemOperand(fp, InterpreterFrameConstants::kBytecodeArrayFromFp));
|
| - __ Ldr(args_count.W(),
|
| - FieldMemOperand(args_count, BytecodeArray::kParameterSizeOffset));
|
| -
|
| - // Leave the frame (also dropping the register file).
|
| - __ LeaveFrame(StackFrame::JAVA_SCRIPT);
|
| -
|
| - // Drop receiver + arguments.
|
| - __ Drop(args_count, 1);
|
| -}
|
| -
|
| -// 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:
|
| -// - x1: the JS function object being called.
|
| -// - x3: the new target
|
| -// - cp: our context.
|
| -// - fp: our caller's frame pointer.
|
| -// - jssp: stack pointer.
|
| -// - lr: 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(lr, fp, cp, x1);
|
| - __ Add(fp, jssp, StandardFrameConstants::kFixedFrameSizeFromFp);
|
| -
|
| - // Get the bytecode array from the function object (or from the DebugInfo if
|
| - // it is present) and load it into kInterpreterBytecodeArrayRegister.
|
| - __ Ldr(x0, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
|
| - Register debug_info = kInterpreterBytecodeArrayRegister;
|
| - Label load_debug_bytecode_array, bytecode_array_loaded;
|
| - DCHECK(!debug_info.is(x0));
|
| - __ Ldr(debug_info, FieldMemOperand(x0, SharedFunctionInfo::kDebugInfoOffset));
|
| - __ Cmp(debug_info, Operand(DebugInfo::uninitialized()));
|
| - __ B(ne, &load_debug_bytecode_array);
|
| - __ Ldr(kInterpreterBytecodeArrayRegister,
|
| - FieldMemOperand(x0, SharedFunctionInfo::kFunctionDataOffset));
|
| - __ Bind(&bytecode_array_loaded);
|
| -
|
| - // Check function data field is actually a BytecodeArray object.
|
| - Label bytecode_array_not_present;
|
| - __ CompareRoot(kInterpreterBytecodeArrayRegister,
|
| - Heap::kUndefinedValueRootIndex);
|
| - __ B(eq, &bytecode_array_not_present);
|
| - if (FLAG_debug_code) {
|
| - __ AssertNotSmi(kInterpreterBytecodeArrayRegister,
|
| - kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
|
| - __ CompareObjectType(kInterpreterBytecodeArrayRegister, x0, x0,
|
| - BYTECODE_ARRAY_TYPE);
|
| - __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
|
| - }
|
| -
|
| - // Load the initial bytecode offset.
|
| - __ Mov(kInterpreterBytecodeOffsetRegister,
|
| - Operand(BytecodeArray::kHeaderSize - kHeapObjectTag));
|
| -
|
| - // Push new.target, bytecode array and Smi tagged bytecode array offset.
|
| - __ SmiTag(x0, kInterpreterBytecodeOffsetRegister);
|
| - __ Push(x3, kInterpreterBytecodeArrayRegister, x0);
|
| -
|
| - // Allocate the local and temporary register file on the stack.
|
| - {
|
| - // Load frame size from the BytecodeArray object.
|
| - __ Ldr(w11, FieldMemOperand(kInterpreterBytecodeArrayRegister,
|
| - BytecodeArray::kFrameSizeOffset));
|
| -
|
| - // Do a stack check to ensure we don't go over the limit.
|
| - Label ok;
|
| - DCHECK(jssp.Is(__ StackPointer()));
|
| - __ Sub(x10, jssp, Operand(x11));
|
| - __ CompareRoot(x10, Heap::kRealStackLimitRootIndex);
|
| - __ B(hs, &ok);
|
| - __ CallRuntime(Runtime::kThrowStackOverflow);
|
| - __ Bind(&ok);
|
| -
|
| - // If ok, push undefined as the initial value for all register file entries.
|
| - // Note: there should always be at least one stack slot for the return
|
| - // register in the register file.
|
| - Label loop_header;
|
| - __ LoadRoot(x10, Heap::kUndefinedValueRootIndex);
|
| - // TODO(rmcilroy): Ensure we always have an even number of registers to
|
| - // allow stack to be 16 bit aligned (and remove need for jssp).
|
| - __ Lsr(x11, x11, kPointerSizeLog2);
|
| - __ PushMultipleTimes(x10, x11);
|
| - __ Bind(&loop_header);
|
| - }
|
| -
|
| - // Load accumulator and dispatch table into registers.
|
| - __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex);
|
| - __ Mov(kInterpreterDispatchTableRegister,
|
| - Operand(ExternalReference::interpreter_dispatch_table_address(
|
| - masm->isolate())));
|
| -
|
| - // Dispatch to the first bytecode handler for the function.
|
| - __ Ldrb(x1, MemOperand(kInterpreterBytecodeArrayRegister,
|
| - kInterpreterBytecodeOffsetRegister));
|
| - __ Mov(x1, Operand(x1, LSL, kPointerSizeLog2));
|
| - __ Ldr(ip0, MemOperand(kInterpreterDispatchTableRegister, x1));
|
| - __ Call(ip0);
|
| - masm->isolate()->heap()->SetInterpreterEntryReturnPCOffset(masm->pc_offset());
|
| -
|
| - // The return value is in x0.
|
| - LeaveInterpreterFrame(masm, x2);
|
| - __ Ret();
|
| -
|
| - // Load debug copy of the bytecode array.
|
| - __ Bind(&load_debug_bytecode_array);
|
| - __ Ldr(kInterpreterBytecodeArrayRegister,
|
| - FieldMemOperand(debug_info, DebugInfo::kAbstractCodeIndex));
|
| - __ B(&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);
|
| - __ LeaveFrame(StackFrame::JAVA_SCRIPT);
|
| - __ Ldr(x7, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(x7, FieldMemOperand(x7, SharedFunctionInfo::kCodeOffset));
|
| - __ Add(x7, x7, Operand(Code::kHeaderSize - kHeapObjectTag));
|
| - __ Str(x7, FieldMemOperand(x1, JSFunction::kCodeEntryOffset));
|
| - __ RecordWriteCodeEntryField(x1, x7, x5);
|
| - __ Jump(x7);
|
| -}
|
| -
|
| -void Builtins::Generate_InterpreterMarkBaselineOnReturn(MacroAssembler* masm) {
|
| - // Save the function and context for call to CompileBaseline.
|
| - __ ldr(x1, MemOperand(fp, StandardFrameConstants::kFunctionOffset));
|
| - __ ldr(kContextRegister,
|
| - MemOperand(fp, StandardFrameConstants::kContextOffset));
|
| -
|
| - // Leave the frame before recompiling for baseline so that we don't count as
|
| - // an activation on the stack.
|
| - LeaveInterpreterFrame(masm, x2);
|
| -
|
| - {
|
| - FrameScope frame_scope(masm, StackFrame::INTERNAL);
|
| - // Push return value.
|
| - __ push(x0);
|
| -
|
| - // Push function as argument and compile for baseline.
|
| - __ push(x1);
|
| - __ CallRuntime(Runtime::kCompileBaseline);
|
| -
|
| - // Restore return value.
|
| - __ pop(x0);
|
| - }
|
| - __ Ret();
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_InterpreterPushArgsAndCallImpl(
|
| - MacroAssembler* masm, TailCallMode tail_call_mode,
|
| - CallableType function_type) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x2 : 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.
|
| - // -- x1 : the target to call (can be any Object).
|
| - // -----------------------------------
|
| -
|
| - // Find the address of the last argument.
|
| - __ add(x3, x0, Operand(1)); // Add one for receiver.
|
| - __ lsl(x3, x3, kPointerSizeLog2);
|
| - __ sub(x4, x2, x3);
|
| -
|
| - // Push the arguments.
|
| - Label loop_header, loop_check;
|
| - __ Mov(x5, jssp);
|
| - __ Claim(x3, 1);
|
| - __ B(&loop_check);
|
| - __ Bind(&loop_header);
|
| - // TODO(rmcilroy): Push two at a time once we ensure we keep stack aligned.
|
| - __ Ldr(x3, MemOperand(x2, -kPointerSize, PostIndex));
|
| - __ Str(x3, MemOperand(x5, -kPointerSize, PreIndex));
|
| - __ Bind(&loop_check);
|
| - __ Cmp(x2, x4);
|
| - __ B(gt, &loop_header);
|
| -
|
| - // Call the target.
|
| - 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 -------------
|
| - // -- x0 : argument count (not including receiver)
|
| - // -- x3 : new target
|
| - // -- x1 : constructor to call
|
| - // -- x2 : address of the first argument
|
| - // -----------------------------------
|
| -
|
| - // Find the address of the last argument.
|
| - __ add(x5, x0, Operand(1)); // Add one for receiver (to be constructed).
|
| - __ lsl(x5, x5, kPointerSizeLog2);
|
| -
|
| - // Set stack pointer and where to stop.
|
| - __ Mov(x6, jssp);
|
| - __ Claim(x5, 1);
|
| - __ sub(x4, x6, x5);
|
| -
|
| - // Push a slot for the receiver.
|
| - __ Str(xzr, MemOperand(x6, -kPointerSize, PreIndex));
|
| -
|
| - Label loop_header, loop_check;
|
| - // Push the arguments.
|
| - __ B(&loop_check);
|
| - __ Bind(&loop_header);
|
| - // TODO(rmcilroy): Push two at a time once we ensure we keep stack aligned.
|
| - __ Ldr(x5, MemOperand(x2, -kPointerSize, PostIndex));
|
| - __ Str(x5, MemOperand(x6, -kPointerSize, PreIndex));
|
| - __ Bind(&loop_check);
|
| - __ Cmp(x6, x4);
|
| - __ B(gt, &loop_header);
|
| -
|
| - // Call the constructor with x0, x1, and x3 unmodified.
|
| - __ 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));
|
| - __ LoadObject(x1, masm->isolate()->builtins()->InterpreterEntryTrampoline());
|
| - __ Add(lr, x1, Operand(interpreter_entry_return_pc_offset->value() +
|
| - Code::kHeaderSize - kHeapObjectTag));
|
| -
|
| - // Initialize the dispatch table register.
|
| - __ Mov(kInterpreterDispatchTableRegister,
|
| - Operand(ExternalReference::interpreter_dispatch_table_address(
|
| - masm->isolate())));
|
| -
|
| - // Get the bytecode array pointer from the frame.
|
| - __ Ldr(kInterpreterBytecodeArrayRegister,
|
| - MemOperand(fp, InterpreterFrameConstants::kBytecodeArrayFromFp));
|
| -
|
| - if (FLAG_debug_code) {
|
| - // Check function data field is actually a BytecodeArray object.
|
| - __ AssertNotSmi(kInterpreterBytecodeArrayRegister,
|
| - kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
|
| - __ CompareObjectType(kInterpreterBytecodeArrayRegister, x1, x1,
|
| - BYTECODE_ARRAY_TYPE);
|
| - __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
|
| - }
|
| -
|
| - // Get the target bytecode offset from the frame.
|
| - __ Ldr(kInterpreterBytecodeOffsetRegister,
|
| - MemOperand(fp, InterpreterFrameConstants::kBytecodeOffsetFromFp));
|
| - __ SmiUntag(kInterpreterBytecodeOffsetRegister);
|
| -
|
| - // Dispatch to the target bytecode.
|
| - __ Ldrb(x1, MemOperand(kInterpreterBytecodeArrayRegister,
|
| - kInterpreterBytecodeOffsetRegister));
|
| - __ Mov(x1, Operand(x1, LSL, kPointerSizeLog2));
|
| - __ Ldr(ip0, MemOperand(kInterpreterDispatchTableRegister, x1));
|
| - __ Jump(ip0);
|
| -}
|
| -
|
| -void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argument count (preserved for callee)
|
| - // -- x3 : new target (preserved for callee)
|
| - // -- x1 : target function (preserved for callee)
|
| - // -----------------------------------
|
| - // First lookup code, maybe we don't need to compile!
|
| - Label gotta_call_runtime;
|
| - Label maybe_call_runtime;
|
| - Label try_shared;
|
| - Label loop_top, loop_bottom;
|
| -
|
| - Register closure = x1;
|
| - Register map = x13;
|
| - Register index = x2;
|
| - __ Ldr(map, FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(map,
|
| - FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
|
| - __ Ldrsw(index, UntagSmiFieldMemOperand(map, FixedArray::kLengthOffset));
|
| - __ Cmp(index, Operand(2));
|
| - __ B(lt, &gotta_call_runtime);
|
| -
|
| - // Find literals.
|
| - // x3 : native context
|
| - // x2 : length / index
|
| - // x13 : optimized code map
|
| - // stack[0] : new target
|
| - // stack[4] : closure
|
| - Register native_context = x4;
|
| - __ Ldr(native_context, NativeContextMemOperand());
|
| -
|
| - __ Bind(&loop_top);
|
| - Register temp = x5;
|
| - Register array_pointer = x6;
|
| -
|
| - // Does the native context match?
|
| - __ Add(array_pointer, map, Operand(index, LSL, kPointerSizeLog2));
|
| - __ Ldr(temp, FieldMemOperand(array_pointer,
|
| - SharedFunctionInfo::kOffsetToPreviousContext));
|
| - __ Ldr(temp, FieldMemOperand(temp, WeakCell::kValueOffset));
|
| - __ Cmp(temp, native_context);
|
| - __ B(ne, &loop_bottom);
|
| - // OSR id set to none?
|
| - __ Ldr(temp, FieldMemOperand(array_pointer,
|
| - SharedFunctionInfo::kOffsetToPreviousOsrAstId));
|
| - const int bailout_id = BailoutId::None().ToInt();
|
| - __ Cmp(temp, Operand(Smi::FromInt(bailout_id)));
|
| - __ B(ne, &loop_bottom);
|
| -
|
| - // Literals available?
|
| - Label got_literals, maybe_cleared_weakcell;
|
| - Register temp2 = x7;
|
| - __ Ldr(temp, FieldMemOperand(array_pointer,
|
| - SharedFunctionInfo::kOffsetToPreviousLiterals));
|
| - // temp contains either a WeakCell pointing to the literals array or the
|
| - // literals array directly.
|
| - STATIC_ASSERT(WeakCell::kValueOffset == FixedArray::kLengthOffset);
|
| - __ Ldr(temp2, FieldMemOperand(temp, WeakCell::kValueOffset));
|
| - __ JumpIfSmi(temp2, &maybe_cleared_weakcell);
|
| - // temp2 is a pointer, therefore temp is a WeakCell pointing to a literals
|
| - // array.
|
| - __ Ldr(temp, FieldMemOperand(temp, WeakCell::kValueOffset));
|
| - __ jmp(&got_literals);
|
| -
|
| - // r4 is a smi. If it's 0, then we are looking at a cleared WeakCell
|
| - // around the literals array, and we should visit the runtime. If it's > 0,
|
| - // then temp already contains the literals array.
|
| - __ bind(&maybe_cleared_weakcell);
|
| - __ Cmp(temp2, Operand(Smi::FromInt(0)));
|
| - __ B(eq, &gotta_call_runtime);
|
| -
|
| - // Save the literals in the closure.
|
| - __ bind(&got_literals);
|
| - __ Str(temp, FieldMemOperand(closure, JSFunction::kLiteralsOffset));
|
| - __ RecordWriteField(closure, JSFunction::kLiteralsOffset, temp, x7,
|
| - kLRHasNotBeenSaved, kDontSaveFPRegs, EMIT_REMEMBERED_SET,
|
| - OMIT_SMI_CHECK);
|
| -
|
| - // Code available?
|
| - Register entry = x7;
|
| - __ Ldr(entry,
|
| - FieldMemOperand(array_pointer,
|
| - SharedFunctionInfo::kOffsetToPreviousCachedCode));
|
| - __ Ldr(entry, FieldMemOperand(entry, WeakCell::kValueOffset));
|
| - __ JumpIfSmi(entry, &maybe_call_runtime);
|
| -
|
| - // Found literals and code. Get them into the closure and return.
|
| - __ Add(entry, entry, Operand(Code::kHeaderSize - kHeapObjectTag));
|
| -
|
| - Label install_optimized_code_and_tailcall;
|
| - __ Bind(&install_optimized_code_and_tailcall);
|
| - __ Str(entry, FieldMemOperand(closure, JSFunction::kCodeEntryOffset));
|
| - __ RecordWriteCodeEntryField(closure, entry, x5);
|
| -
|
| - // Link the closure into the optimized function list.
|
| - // x7 : code entry
|
| - // x4 : native context
|
| - // x1 : closure
|
| - __ Ldr(x8,
|
| - ContextMemOperand(native_context, Context::OPTIMIZED_FUNCTIONS_LIST));
|
| - __ Str(x8, FieldMemOperand(closure, JSFunction::kNextFunctionLinkOffset));
|
| - __ RecordWriteField(closure, JSFunction::kNextFunctionLinkOffset, x8, x13,
|
| - kLRHasNotBeenSaved, kDontSaveFPRegs, EMIT_REMEMBERED_SET,
|
| - OMIT_SMI_CHECK);
|
| - const int function_list_offset =
|
| - Context::SlotOffset(Context::OPTIMIZED_FUNCTIONS_LIST);
|
| - __ Str(closure,
|
| - ContextMemOperand(native_context, Context::OPTIMIZED_FUNCTIONS_LIST));
|
| - __ Mov(x5, closure);
|
| - __ RecordWriteContextSlot(native_context, function_list_offset, x5, x13,
|
| - kLRHasNotBeenSaved, kDontSaveFPRegs);
|
| - __ Jump(entry);
|
| -
|
| - __ Bind(&loop_bottom);
|
| - __ Sub(index, index, Operand(SharedFunctionInfo::kEntryLength));
|
| - __ Cmp(index, Operand(1));
|
| - __ B(gt, &loop_top);
|
| -
|
| - // We found neither literals nor code.
|
| - __ B(&gotta_call_runtime);
|
| -
|
| - __ Bind(&maybe_call_runtime);
|
| -
|
| - // Last possibility. Check the context free optimized code map entry.
|
| - __ Ldr(entry, FieldMemOperand(map, FixedArray::kHeaderSize +
|
| - SharedFunctionInfo::kSharedCodeIndex));
|
| - __ Ldr(entry, FieldMemOperand(entry, WeakCell::kValueOffset));
|
| - __ JumpIfSmi(entry, &try_shared);
|
| -
|
| - // Store code entry in the closure.
|
| - __ Add(entry, entry, Operand(Code::kHeaderSize - kHeapObjectTag));
|
| - __ B(&install_optimized_code_and_tailcall);
|
| -
|
| - __ Bind(&try_shared);
|
| - // Is the full code valid?
|
| - __ Ldr(entry,
|
| - FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(entry, FieldMemOperand(entry, SharedFunctionInfo::kCodeOffset));
|
| - __ Ldr(x5, FieldMemOperand(entry, Code::kFlagsOffset));
|
| - __ and_(x5, x5, Operand(Code::KindField::kMask));
|
| - __ Mov(x5, Operand(x5, LSR, Code::KindField::kShift));
|
| - __ Cmp(x5, Operand(Code::BUILTIN));
|
| - __ B(eq, &gotta_call_runtime);
|
| - // Yes, install the full code.
|
| - __ Add(entry, entry, Operand(Code::kHeaderSize - kHeapObjectTag));
|
| - __ Str(entry, FieldMemOperand(closure, JSFunction::kCodeEntryOffset));
|
| - __ RecordWriteCodeEntryField(closure, entry, x5);
|
| - __ Jump(entry);
|
| -
|
| - __ Bind(&gotta_call_runtime);
|
| - GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy);
|
| -}
|
| -
|
| -void Builtins::Generate_CompileBaseline(MacroAssembler* masm) {
|
| - GenerateTailCallToReturnedCode(masm, Runtime::kCompileBaseline);
|
| -}
|
| -
|
| -void Builtins::Generate_CompileOptimized(MacroAssembler* masm) {
|
| - GenerateTailCallToReturnedCode(masm,
|
| - Runtime::kCompileOptimized_NotConcurrent);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_CompileOptimizedConcurrent(MacroAssembler* masm) {
|
| - GenerateTailCallToReturnedCode(masm, Runtime::kCompileOptimized_Concurrent);
|
| -}
|
| -
|
| -void Builtins::Generate_InstantiateAsmJs(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argument count (preserved for callee)
|
| - // -- x1 : new target (preserved for callee)
|
| - // -- x3 : target function (preserved for callee)
|
| - // -----------------------------------
|
| - Label failed;
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - // Push a copy of the target function and the new target.
|
| - __ SmiTag(x0);
|
| - // Push another copy as a parameter to the runtime call.
|
| - __ Push(x0, x1, x3, x1);
|
| -
|
| - // Copy arguments from caller (stdlib, foreign, heap).
|
| - for (int i = 2; i >= 0; --i) {
|
| - __ ldr(x4, MemOperand(fp, StandardFrameConstants::kCallerSPOffset +
|
| - i * kPointerSize));
|
| - __ push(x4);
|
| - }
|
| - // 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(x0, &failed);
|
| - scope.GenerateLeaveFrame();
|
| - __ Drop(4);
|
| - __ Ret();
|
| -
|
| - __ bind(&failed);
|
| - // Restore target function and new target.
|
| - __ Pop(x3, x1, x0);
|
| - __ SmiUntag(x0);
|
| - }
|
| - // 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 fast, since we shouldn't have to do stack
|
| - // crawls in MakeCodeYoung. This seems a bit fragile.
|
| -
|
| - // The following caller-saved registers must be saved and restored when
|
| - // calling through to the runtime:
|
| - // x0 - The address from which to resume execution.
|
| - // x1 - isolate
|
| - // x3 - new target
|
| - // lr - The return address for the JSFunction itself. It has not yet been
|
| - // preserved on the stack because the frame setup code was replaced
|
| - // with a call to this stub, to handle code ageing.
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ Push(x0, x1, x3, fp, lr);
|
| - __ Mov(x1, ExternalReference::isolate_address(masm->isolate()));
|
| - __ CallCFunction(
|
| - ExternalReference::get_make_code_young_function(masm->isolate()), 2);
|
| - __ Pop(lr, fp, x3, x1, x0);
|
| - }
|
| -
|
| - // The calling function has been made young again, so return to execute the
|
| - // real frame set-up code.
|
| - __ Br(x0);
|
| -}
|
| -
|
| -#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.
|
| -
|
| - // The following caller-saved registers must be saved and restored when
|
| - // calling through to the runtime:
|
| - // x0 - The address from which to resume execution.
|
| - // x1 - isolate
|
| - // x3 - new target
|
| - // lr - The return address for the JSFunction itself. It has not yet been
|
| - // preserved on the stack because the frame setup code was replaced
|
| - // with a call to this stub, to handle code ageing.
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ Push(x0, x1, x3, fp, lr);
|
| - __ Mov(x1, ExternalReference::isolate_address(masm->isolate()));
|
| - __ CallCFunction(
|
| - ExternalReference::get_mark_code_as_executed_function(
|
| - masm->isolate()), 2);
|
| - __ Pop(lr, fp, x3, x1, x0);
|
| -
|
| - // Perform prologue operations usually performed by the young code stub.
|
| - __ EmitFrameSetupForCodeAgePatching(masm);
|
| - }
|
| -
|
| - // Jump to point after the code-age stub.
|
| - __ Add(x0, x0, kNoCodeAgeSequenceLength);
|
| - __ Br(x0);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_MarkCodeAsExecutedTwice(MacroAssembler* masm) {
|
| - GenerateMakeCodeYoungAgainCommon(masm);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_MarkCodeAsToBeExecutedOnce(MacroAssembler* masm) {
|
| - Generate_MarkCodeAsExecutedOnce(masm);
|
| -}
|
| -
|
| -
|
| -static void Generate_NotifyStubFailureHelper(MacroAssembler* masm,
|
| - SaveFPRegsMode save_doubles) {
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| -
|
| - // Preserve registers across notification, this is important for compiled
|
| - // stubs that tail call the runtime on deopts passing their parameters in
|
| - // registers.
|
| - // TODO(jbramley): Is it correct (and appropriate) to use safepoint
|
| - // registers here? According to the comment above, we should only need to
|
| - // preserve the registers with parameters.
|
| - __ PushXRegList(kSafepointSavedRegisters);
|
| - // Pass the function and deoptimization type to the runtime system.
|
| - __ CallRuntime(Runtime::kNotifyStubFailure, save_doubles);
|
| - __ PopXRegList(kSafepointSavedRegisters);
|
| - }
|
| -
|
| - // Ignore state (pushed by Deoptimizer::EntryGenerator::Generate).
|
| - __ Drop(1);
|
| -
|
| - // Jump to the miss handler. Deoptimizer::EntryGenerator::Generate loads this
|
| - // into lr before it jumps here.
|
| - __ Br(lr);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) {
|
| - Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) {
|
| - Generate_NotifyStubFailureHelper(masm, kSaveFPRegs);
|
| -}
|
| -
|
| -
|
| -static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm,
|
| - Deoptimizer::BailoutType type) {
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - // Pass the deoptimization type to the runtime system.
|
| - __ Mov(x0, Smi::FromInt(static_cast<int>(type)));
|
| - __ Push(x0);
|
| - __ CallRuntime(Runtime::kNotifyDeoptimized);
|
| - }
|
| -
|
| - // Get the full codegen state from the stack and untag it.
|
| - Register state = x6;
|
| - __ Peek(state, 0);
|
| - __ SmiUntag(state);
|
| -
|
| - // Switch on the state.
|
| - Label with_tos_register, unknown_state;
|
| - __ CompareAndBranch(state,
|
| - static_cast<int>(Deoptimizer::BailoutState::NO_REGISTERS),
|
| - ne, &with_tos_register);
|
| - __ Drop(1); // Remove state.
|
| - __ Ret();
|
| -
|
| - __ Bind(&with_tos_register);
|
| - // Reload TOS register.
|
| - DCHECK_EQ(kInterpreterAccumulatorRegister.code(), x0.code());
|
| - __ Peek(x0, kPointerSize);
|
| - __ CompareAndBranch(state,
|
| - static_cast<int>(Deoptimizer::BailoutState::TOS_REGISTER),
|
| - ne, &unknown_state);
|
| - __ Drop(2); // Remove state and TOS.
|
| - __ Ret();
|
| -
|
| - __ Bind(&unknown_state);
|
| - __ Abort(kInvalidFullCodegenState);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) {
|
| - Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) {
|
| - Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_NotifySoftDeoptimized(MacroAssembler* masm) {
|
| - Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::SOFT);
|
| -}
|
| -
|
| -
|
| -static void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver,
|
| - Register function_template_info,
|
| - Register scratch0, Register scratch1,
|
| - Register scratch2,
|
| - Label* receiver_check_failed) {
|
| - Register signature = scratch0;
|
| - Register map = scratch1;
|
| - Register constructor = scratch2;
|
| -
|
| - // If there is no signature, return the holder.
|
| - __ Ldr(signature, FieldMemOperand(function_template_info,
|
| - FunctionTemplateInfo::kSignatureOffset));
|
| - __ CompareRoot(signature, Heap::kUndefinedValueRootIndex);
|
| - Label receiver_check_passed;
|
| - __ B(eq, &receiver_check_passed);
|
| -
|
| - // Walk the prototype chain.
|
| - __ Ldr(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
|
| - Label prototype_loop_start;
|
| - __ Bind(&prototype_loop_start);
|
| -
|
| - // Get the constructor, if any
|
| - __ GetMapConstructor(constructor, map, x16, x16);
|
| - __ cmp(x16, Operand(JS_FUNCTION_TYPE));
|
| - Label next_prototype;
|
| - __ B(ne, &next_prototype);
|
| - Register type = constructor;
|
| - __ Ldr(type,
|
| - FieldMemOperand(constructor, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(type, FieldMemOperand(type, SharedFunctionInfo::kFunctionDataOffset));
|
| -
|
| - // Loop through the chain of inheriting function templates.
|
| - Label function_template_loop;
|
| - __ Bind(&function_template_loop);
|
| -
|
| - // If the signatures match, we have a compatible receiver.
|
| - __ Cmp(signature, type);
|
| - __ B(eq, &receiver_check_passed);
|
| -
|
| - // If the current type is not a FunctionTemplateInfo, load the next prototype
|
| - // in the chain.
|
| - __ JumpIfSmi(type, &next_prototype);
|
| - __ CompareObjectType(type, x16, x17, FUNCTION_TEMPLATE_INFO_TYPE);
|
| - __ B(ne, &next_prototype);
|
| -
|
| - // Otherwise load the parent function template and iterate.
|
| - __ Ldr(type,
|
| - FieldMemOperand(type, FunctionTemplateInfo::kParentTemplateOffset));
|
| - __ B(&function_template_loop);
|
| -
|
| - // Load the next prototype.
|
| - __ Bind(&next_prototype);
|
| - __ Ldr(x16, FieldMemOperand(map, Map::kBitField3Offset));
|
| - __ Tst(x16, Operand(Map::HasHiddenPrototype::kMask));
|
| - __ B(eq, receiver_check_failed);
|
| - __ Ldr(receiver, FieldMemOperand(map, Map::kPrototypeOffset));
|
| - __ Ldr(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
|
| - // Iterate.
|
| - __ B(&prototype_loop_start);
|
| -
|
| - __ Bind(&receiver_check_passed);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_HandleFastApiCall(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : number of arguments excluding receiver
|
| - // -- x1 : callee
|
| - // -- lr : return address
|
| - // -- sp[0] : last argument
|
| - // -- ...
|
| - // -- sp[8 * (argc - 1)] : first argument
|
| - // -- sp[8 * argc] : receiver
|
| - // -----------------------------------
|
| -
|
| - // Load the FunctionTemplateInfo.
|
| - __ Ldr(x3, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(x3, FieldMemOperand(x3, SharedFunctionInfo::kFunctionDataOffset));
|
| -
|
| - // Do the compatible receiver check.
|
| - Label receiver_check_failed;
|
| - __ Ldr(x2, MemOperand(jssp, x0, LSL, kPointerSizeLog2));
|
| - CompatibleReceiverCheck(masm, x2, x3, x4, x5, x6, &receiver_check_failed);
|
| -
|
| - // Get the callback offset from the FunctionTemplateInfo, and jump to the
|
| - // beginning of the code.
|
| - __ Ldr(x4, FieldMemOperand(x3, FunctionTemplateInfo::kCallCodeOffset));
|
| - __ Ldr(x4, FieldMemOperand(x4, CallHandlerInfo::kFastHandlerOffset));
|
| - __ Add(x4, x4, Operand(Code::kHeaderSize - kHeapObjectTag));
|
| - __ Jump(x4);
|
| -
|
| - // Compatible receiver check failed: throw an Illegal Invocation exception.
|
| - __ Bind(&receiver_check_failed);
|
| - // Drop the arguments (including the receiver)
|
| - __ add(x0, x0, Operand(1));
|
| - __ Drop(x0);
|
| - __ TailCallRuntime(Runtime::kThrowIllegalInvocation);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) {
|
| - // Lookup the function in the JavaScript frame.
|
| - __ Ldr(x0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - // Pass function as argument.
|
| - __ Push(x0);
|
| - __ CallRuntime(Runtime::kCompileForOnStackReplacement);
|
| - }
|
| -
|
| - // If the code object is null, just return to the unoptimized code.
|
| - Label skip;
|
| - __ CompareAndBranch(x0, Smi::FromInt(0), ne, &skip);
|
| - __ Ret();
|
| -
|
| - __ Bind(&skip);
|
| -
|
| - // Load deoptimization data from the code object.
|
| - // <deopt_data> = <code>[#deoptimization_data_offset]
|
| - __ Ldr(x1, MemOperand(x0, Code::kDeoptimizationDataOffset - kHeapObjectTag));
|
| -
|
| - // Load the OSR entrypoint offset from the deoptimization data.
|
| - // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset]
|
| - __ Ldrsw(w1, UntagSmiFieldMemOperand(x1, FixedArray::OffsetOfElementAt(
|
| - DeoptimizationInputData::kOsrPcOffsetIndex)));
|
| -
|
| - // Compute the target address = code_obj + header_size + osr_offset
|
| - // <entry_addr> = <code_obj> + #header_size + <osr_offset>
|
| - __ Add(x0, x0, x1);
|
| - __ Add(lr, x0, Code::kHeaderSize - kHeapObjectTag);
|
| -
|
| - // And "return" to the OSR entry point of the function.
|
| - __ Ret();
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm,
|
| - int field_index) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : number of arguments
|
| - // -- x1 : function
|
| - // -- cp : context
|
| - // -- lr : return address
|
| - // -- jssp[0] : receiver
|
| - // -----------------------------------
|
| - ASM_LOCATION("Builtins::Generate_DatePrototype_GetField");
|
| -
|
| - // 1. Pop receiver into x0 and check that it's actually a JSDate object.
|
| - Label receiver_not_date;
|
| - {
|
| - __ Pop(x0);
|
| - __ JumpIfSmi(x0, &receiver_not_date);
|
| - __ JumpIfNotObjectType(x0, x2, x3, JS_DATE_TYPE, &receiver_not_date);
|
| - }
|
| -
|
| - // 2. Load the specified date field, falling back to the runtime as necessary.
|
| - if (field_index == JSDate::kDateValue) {
|
| - __ Ldr(x0, FieldMemOperand(x0, JSDate::kValueOffset));
|
| - } else {
|
| - if (field_index < JSDate::kFirstUncachedField) {
|
| - Label stamp_mismatch;
|
| - __ Mov(x1, ExternalReference::date_cache_stamp(masm->isolate()));
|
| - __ Ldr(x1, MemOperand(x1));
|
| - __ Ldr(x2, FieldMemOperand(x0, JSDate::kCacheStampOffset));
|
| - __ Cmp(x1, x2);
|
| - __ B(ne, &stamp_mismatch);
|
| - __ Ldr(x0, FieldMemOperand(
|
| - x0, JSDate::kValueOffset + field_index * kPointerSize));
|
| - __ Ret();
|
| - __ Bind(&stamp_mismatch);
|
| - }
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ Mov(x1, Smi::FromInt(field_index));
|
| - __ CallCFunction(
|
| - ExternalReference::get_date_field_function(masm->isolate()), 2);
|
| - }
|
| - __ Ret();
|
| -
|
| - // 3. Raise a TypeError if the receiver is not a date.
|
| - __ Bind(&receiver_not_date);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ Push(x0);
|
| - __ Mov(x0, Smi::FromInt(0));
|
| - __ EnterBuiltinFrame(cp, x1, x0);
|
| - __ CallRuntime(Runtime::kThrowNotDateError);
|
| - }
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argc
|
| - // -- jssp[0] : argArray (if argc == 2)
|
| - // -- jssp[8] : thisArg (if argc >= 1)
|
| - // -- jssp[16] : receiver
|
| - // -----------------------------------
|
| - ASM_LOCATION("Builtins::Generate_FunctionPrototypeApply");
|
| -
|
| - Register argc = x0;
|
| - Register arg_array = x0;
|
| - Register receiver = x1;
|
| - Register this_arg = x2;
|
| - Register undefined_value = x3;
|
| - Register null_value = x4;
|
| -
|
| - __ LoadRoot(undefined_value, Heap::kUndefinedValueRootIndex);
|
| - __ LoadRoot(null_value, Heap::kNullValueRootIndex);
|
| -
|
| - // 1. Load receiver into x1, argArray into x0 (if present), remove all
|
| - // arguments from the stack (including the receiver), and push thisArg (if
|
| - // present) instead.
|
| - {
|
| - // Claim (2 - argc) dummy arguments from the stack, to put the stack in a
|
| - // consistent state for a simple pop operation.
|
| - __ Claim(2);
|
| - __ Drop(argc);
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argc
|
| - // -- jssp[0] : argArray (dummy value if argc <= 1)
|
| - // -- jssp[8] : thisArg (dummy value if argc == 0)
|
| - // -- jssp[16] : receiver
|
| - // -----------------------------------
|
| - __ Cmp(argc, 1);
|
| - __ Pop(arg_array, this_arg); // Overwrites argc.
|
| - __ CmovX(this_arg, undefined_value, lo); // undefined if argc == 0.
|
| - __ CmovX(arg_array, undefined_value, ls); // undefined if argc <= 1.
|
| -
|
| - __ Peek(receiver, 0);
|
| - __ Poke(this_arg, 0);
|
| - }
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argArray
|
| - // -- x1 : receiver
|
| - // -- x3 : undefined root value
|
| - // -- jssp[0] : thisArg
|
| - // -----------------------------------
|
| -
|
| - // 2. Make sure the receiver is actually callable.
|
| - Label receiver_not_callable;
|
| - __ JumpIfSmi(receiver, &receiver_not_callable);
|
| - __ Ldr(x10, FieldMemOperand(receiver, HeapObject::kMapOffset));
|
| - __ Ldrb(w10, FieldMemOperand(x10, Map::kBitFieldOffset));
|
| - __ TestAndBranchIfAllClear(x10, 1 << Map::kIsCallable,
|
| - &receiver_not_callable);
|
| -
|
| - // 3. Tail call with no arguments if argArray is null or undefined.
|
| - Label no_arguments;
|
| - __ Cmp(arg_array, null_value);
|
| - __ Ccmp(arg_array, undefined_value, ZFlag, ne);
|
| - __ B(eq, &no_arguments);
|
| -
|
| - // 4a. Apply the receiver to the given argArray (passing undefined for
|
| - // new.target in x3).
|
| - DCHECK(undefined_value.Is(x3));
|
| - __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET);
|
| -
|
| - // 4b. The argArray is either null or undefined, so we tail call without any
|
| - // arguments to the receiver.
|
| - __ Bind(&no_arguments);
|
| - {
|
| - __ Mov(x0, 0);
|
| - DCHECK(receiver.Is(x1));
|
| - __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
|
| - }
|
| -
|
| - // 4c. The receiver is not callable, throw an appropriate TypeError.
|
| - __ Bind(&receiver_not_callable);
|
| - {
|
| - __ Poke(receiver, 0);
|
| - __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
|
| - }
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) {
|
| - Register argc = x0;
|
| - Register function = x1;
|
| - Register scratch1 = x10;
|
| - Register scratch2 = x11;
|
| -
|
| - ASM_LOCATION("Builtins::Generate_FunctionPrototypeCall");
|
| -
|
| - // 1. Make sure we have at least one argument.
|
| - {
|
| - Label done;
|
| - __ Cbnz(argc, &done);
|
| - __ LoadRoot(scratch1, Heap::kUndefinedValueRootIndex);
|
| - __ Push(scratch1);
|
| - __ Mov(argc, 1);
|
| - __ Bind(&done);
|
| - }
|
| -
|
| - // 2. Get the callable to call (passed as receiver) from the stack.
|
| - __ Peek(function, Operand(argc, LSL, kXRegSizeLog2));
|
| -
|
| - // 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;
|
| - // Calculate the copy start address (destination). Copy end address is jssp.
|
| - __ Add(scratch2, jssp, Operand(argc, LSL, kPointerSizeLog2));
|
| - __ Sub(scratch1, scratch2, kPointerSize);
|
| -
|
| - __ Bind(&loop);
|
| - __ Ldr(x12, MemOperand(scratch1, -kPointerSize, PostIndex));
|
| - __ Str(x12, MemOperand(scratch2, -kPointerSize, PostIndex));
|
| - __ Cmp(scratch1, jssp);
|
| - __ B(ge, &loop);
|
| - // Adjust the actual number of arguments and remove the top element
|
| - // (which is a copy of the last argument).
|
| - __ Sub(argc, argc, 1);
|
| - __ Drop(1);
|
| - }
|
| -
|
| - // 4. Call the callable.
|
| - __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_ReflectApply(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argc
|
| - // -- jssp[0] : argumentsList (if argc == 3)
|
| - // -- jssp[8] : thisArgument (if argc >= 2)
|
| - // -- jssp[16] : target (if argc >= 1)
|
| - // -- jssp[24] : receiver
|
| - // -----------------------------------
|
| - ASM_LOCATION("Builtins::Generate_ReflectApply");
|
| -
|
| - Register argc = x0;
|
| - Register arguments_list = x0;
|
| - Register target = x1;
|
| - Register this_argument = x2;
|
| - Register undefined_value = x3;
|
| -
|
| - __ LoadRoot(undefined_value, Heap::kUndefinedValueRootIndex);
|
| -
|
| - // 1. Load target into x1 (if present), argumentsList into x0 (if present),
|
| - // remove all arguments from the stack (including the receiver), and push
|
| - // thisArgument (if present) instead.
|
| - {
|
| - // Claim (3 - argc) dummy arguments from the stack, to put the stack in a
|
| - // consistent state for a simple pop operation.
|
| - __ Claim(3);
|
| - __ Drop(argc);
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argc
|
| - // -- jssp[0] : argumentsList (dummy value if argc <= 2)
|
| - // -- jssp[8] : thisArgument (dummy value if argc <= 1)
|
| - // -- jssp[16] : target (dummy value if argc == 0)
|
| - // -- jssp[24] : receiver
|
| - // -----------------------------------
|
| - __ Adds(x10, argc, 0); // Preserve argc, and set the Z flag if it is zero.
|
| - __ Pop(arguments_list, this_argument, target); // Overwrites argc.
|
| - __ CmovX(target, undefined_value, eq); // undefined if argc == 0.
|
| - __ Cmp(x10, 2);
|
| - __ CmovX(this_argument, undefined_value, lo); // undefined if argc <= 1.
|
| - __ CmovX(arguments_list, undefined_value, ls); // undefined if argc <= 2.
|
| -
|
| - __ Poke(this_argument, 0); // Overwrite receiver.
|
| - }
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argumentsList
|
| - // -- x1 : target
|
| - // -- jssp[0] : thisArgument
|
| - // -----------------------------------
|
| -
|
| - // 2. Make sure the target is actually callable.
|
| - Label target_not_callable;
|
| - __ JumpIfSmi(target, &target_not_callable);
|
| - __ Ldr(x10, FieldMemOperand(target, HeapObject::kMapOffset));
|
| - __ Ldr(x10, FieldMemOperand(x10, Map::kBitFieldOffset));
|
| - __ TestAndBranchIfAllClear(x10, 1 << Map::kIsCallable, &target_not_callable);
|
| -
|
| - // 3a. Apply the target to the given argumentsList (passing undefined for
|
| - // new.target in x3).
|
| - DCHECK(undefined_value.Is(x3));
|
| - __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET);
|
| -
|
| - // 3b. The target is not callable, throw an appropriate TypeError.
|
| - __ Bind(&target_not_callable);
|
| - {
|
| - __ Poke(target, 0);
|
| - __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
|
| - }
|
| -}
|
| -
|
| -
|
| -void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argc
|
| - // -- jssp[0] : new.target (optional)
|
| - // -- jssp[8] : argumentsList
|
| - // -- jssp[16] : target
|
| - // -- jssp[24] : receiver
|
| - // -----------------------------------
|
| - ASM_LOCATION("Builtins::Generate_ReflectConstruct");
|
| -
|
| - Register argc = x0;
|
| - Register arguments_list = x0;
|
| - Register target = x1;
|
| - Register new_target = x3;
|
| - Register undefined_value = x4;
|
| -
|
| - __ LoadRoot(undefined_value, Heap::kUndefinedValueRootIndex);
|
| -
|
| - // 1. Load target into x1 (if present), argumentsList into x0 (if present),
|
| - // new.target into x3 (if present, otherwise use target), remove all
|
| - // arguments from the stack (including the receiver), and push thisArgument
|
| - // (if present) instead.
|
| - {
|
| - // Claim (3 - argc) dummy arguments from the stack, to put the stack in a
|
| - // consistent state for a simple pop operation.
|
| - __ Claim(3);
|
| - __ Drop(argc);
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argc
|
| - // -- jssp[0] : new.target (dummy value if argc <= 2)
|
| - // -- jssp[8] : argumentsList (dummy value if argc <= 1)
|
| - // -- jssp[16] : target (dummy value if argc == 0)
|
| - // -- jssp[24] : receiver
|
| - // -----------------------------------
|
| - __ Adds(x10, argc, 0); // Preserve argc, and set the Z flag if it is zero.
|
| - __ Pop(new_target, arguments_list, target); // Overwrites argc.
|
| - __ CmovX(target, undefined_value, eq); // undefined if argc == 0.
|
| - __ Cmp(x10, 2);
|
| - __ CmovX(arguments_list, undefined_value, lo); // undefined if argc <= 1.
|
| - __ CmovX(new_target, target, ls); // target if argc <= 2.
|
| -
|
| - __ Poke(undefined_value, 0); // Overwrite receiver.
|
| - }
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argumentsList
|
| - // -- x1 : target
|
| - // -- x3 : new.target
|
| - // -- jssp[0] : receiver (undefined)
|
| - // -----------------------------------
|
| -
|
| - // 2. Make sure the target is actually a constructor.
|
| - Label target_not_constructor;
|
| - __ JumpIfSmi(target, &target_not_constructor);
|
| - __ Ldr(x10, FieldMemOperand(target, HeapObject::kMapOffset));
|
| - __ Ldrb(x10, FieldMemOperand(x10, Map::kBitFieldOffset));
|
| - __ TestAndBranchIfAllClear(x10, 1 << Map::kIsConstructor,
|
| - &target_not_constructor);
|
| -
|
| - // 3. Make sure the new.target is actually a constructor.
|
| - Label new_target_not_constructor;
|
| - __ JumpIfSmi(new_target, &new_target_not_constructor);
|
| - __ Ldr(x10, FieldMemOperand(new_target, HeapObject::kMapOffset));
|
| - __ Ldrb(x10, FieldMemOperand(x10, Map::kBitFieldOffset));
|
| - __ TestAndBranchIfAllClear(x10, 1 << Map::kIsConstructor,
|
| - &new_target_not_constructor);
|
| -
|
| - // 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);
|
| - {
|
| - __ Poke(target, 0);
|
| - __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
|
| - }
|
| -
|
| - // 4c. The new.target is not a constructor, throw an appropriate TypeError.
|
| - __ Bind(&new_target_not_constructor);
|
| - {
|
| - __ Poke(new_target, 0);
|
| - __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
|
| - }
|
| -}
|
| -
|
| -
|
| -static void ArgumentAdaptorStackCheck(MacroAssembler* masm,
|
| - Label* stack_overflow) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : actual number of arguments
|
| - // -- x1 : function (passed through to callee)
|
| - // -- x2 : expected number of arguments
|
| - // -- x3 : 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.
|
| - Label enough_stack_space;
|
| - __ LoadRoot(x10, Heap::kRealStackLimitRootIndex);
|
| - // Make x10 the space we have left. The stack might already be overflowed
|
| - // here which will cause x10 to become negative.
|
| - __ Sub(x10, jssp, x10);
|
| - // Check if the arguments will overflow the stack.
|
| - __ Cmp(x10, Operand(x2, LSL, kPointerSizeLog2));
|
| - __ B(le, stack_overflow);
|
| -}
|
| -
|
| -
|
| -static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) {
|
| - __ SmiTag(x10, x0);
|
| - __ Mov(x11, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
|
| - __ Push(lr, fp);
|
| - __ Push(x11, x1, x10);
|
| - __ Add(fp, jssp,
|
| - StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize);
|
| -}
|
| -
|
| -
|
| -static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : result being passed through
|
| - // -----------------------------------
|
| - // Get the number of arguments passed (as a smi), tear down the frame and
|
| - // then drop the parameters and the receiver.
|
| - __ Ldr(x10, MemOperand(fp, -(StandardFrameConstants::kFixedFrameSizeFromFp +
|
| - kPointerSize)));
|
| - __ Mov(jssp, fp);
|
| - __ Pop(fp, lr);
|
| - __ DropBySMI(x10, kXRegSize);
|
| - __ Drop(1);
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_Apply(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argumentsList
|
| - // -- x1 : target
|
| - // -- x3 : new.target (checked to be constructor or undefined)
|
| - // -- jssp[0] : thisArgument
|
| - // -----------------------------------
|
| -
|
| - Register arguments_list = x0;
|
| - Register target = x1;
|
| - Register new_target = x3;
|
| -
|
| - Register args = x0;
|
| - Register len = x2;
|
| -
|
| - // Create the list of arguments from the array-like argumentsList.
|
| - {
|
| - Label create_arguments, create_array, create_runtime, done_create;
|
| - __ JumpIfSmi(arguments_list, &create_runtime);
|
| -
|
| - // Load native context.
|
| - Register native_context = x4;
|
| - __ Ldr(native_context, NativeContextMemOperand());
|
| -
|
| - // Load the map of argumentsList.
|
| - Register arguments_list_map = x2;
|
| - __ Ldr(arguments_list_map,
|
| - FieldMemOperand(arguments_list, HeapObject::kMapOffset));
|
| -
|
| - // Check if argumentsList is an (unmodified) arguments object.
|
| - __ Ldr(x10, ContextMemOperand(native_context,
|
| - Context::SLOPPY_ARGUMENTS_MAP_INDEX));
|
| - __ Ldr(x11, ContextMemOperand(native_context,
|
| - Context::STRICT_ARGUMENTS_MAP_INDEX));
|
| - __ Cmp(arguments_list_map, x10);
|
| - __ Ccmp(arguments_list_map, x11, ZFlag, ne);
|
| - __ B(eq, &create_arguments);
|
| -
|
| - // Check if argumentsList is a fast JSArray.
|
| - __ CompareInstanceType(arguments_list_map, native_context, JS_ARRAY_TYPE);
|
| - __ B(eq, &create_array);
|
| -
|
| - // Ask the runtime to create the list (actually a FixedArray).
|
| - __ Bind(&create_runtime);
|
| - {
|
| - FrameScope scope(masm, StackFrame::INTERNAL);
|
| - __ Push(target, new_target, arguments_list);
|
| - __ CallRuntime(Runtime::kCreateListFromArrayLike);
|
| - __ Pop(new_target, target);
|
| - __ Ldrsw(len, UntagSmiFieldMemOperand(arguments_list,
|
| - FixedArray::kLengthOffset));
|
| - }
|
| - __ B(&done_create);
|
| -
|
| - // Try to create the list from an arguments object.
|
| - __ Bind(&create_arguments);
|
| - __ Ldrsw(len, UntagSmiFieldMemOperand(arguments_list,
|
| - JSArgumentsObject::kLengthOffset));
|
| - __ Ldr(x10, FieldMemOperand(arguments_list, JSObject::kElementsOffset));
|
| - __ Ldrsw(x11, UntagSmiFieldMemOperand(x10, FixedArray::kLengthOffset));
|
| - __ CompareAndBranch(len, x11, ne, &create_runtime);
|
| - __ Mov(args, x10);
|
| - __ B(&done_create);
|
| -
|
| - // Try to create the list from a JSArray object.
|
| - __ Bind(&create_array);
|
| - __ Ldr(x10, FieldMemOperand(arguments_list_map, Map::kBitField2Offset));
|
| - __ DecodeField<Map::ElementsKindBits>(x10);
|
| - STATIC_ASSERT(FAST_SMI_ELEMENTS == 0);
|
| - STATIC_ASSERT(FAST_ELEMENTS == 2);
|
| - // Branch for anything that's not FAST_{SMI_}ELEMENTS.
|
| - __ TestAndBranchIfAnySet(x10, ~FAST_ELEMENTS, &create_runtime);
|
| - __ Ldrsw(len,
|
| - UntagSmiFieldMemOperand(arguments_list, JSArray::kLengthOffset));
|
| - __ Ldr(args, FieldMemOperand(arguments_list, JSArray::kElementsOffset));
|
| -
|
| - __ Bind(&done_create);
|
| - }
|
| -
|
| - // Check for stack overflow.
|
| - {
|
| - // Check the stack for overflow. We are not trying to catch interruptions
|
| - // (i.e. debug break and preemption) here, so check the "real stack limit".
|
| - Label done;
|
| - __ LoadRoot(x10, Heap::kRealStackLimitRootIndex);
|
| - // Make x10 the space we have left. The stack might already be overflowed
|
| - // here which will cause x10 to become negative.
|
| - __ Sub(x10, masm->StackPointer(), x10);
|
| - // Check if the arguments will overflow the stack.
|
| - __ Cmp(x10, Operand(len, LSL, kPointerSizeLog2));
|
| - __ B(gt, &done); // Signed comparison.
|
| - __ TailCallRuntime(Runtime::kThrowStackOverflow);
|
| - __ Bind(&done);
|
| - }
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : args (a FixedArray built from argumentsList)
|
| - // -- x1 : target
|
| - // -- x2 : len (number of elements to push from args)
|
| - // -- x3 : new.target (checked to be constructor or undefined)
|
| - // -- jssp[0] : thisArgument
|
| - // -----------------------------------
|
| -
|
| - // Push arguments onto the stack (thisArgument is already on the stack).
|
| - {
|
| - Label done, loop;
|
| - Register src = x4;
|
| -
|
| - __ Add(src, args, FixedArray::kHeaderSize - kHeapObjectTag);
|
| - __ Mov(x0, len); // The 'len' argument for Call() or Construct().
|
| - __ Cbz(len, &done);
|
| - __ Claim(len);
|
| - __ Bind(&loop);
|
| - __ Sub(len, len, 1);
|
| - __ Ldr(x10, MemOperand(src, kPointerSize, PostIndex));
|
| - __ Poke(x10, Operand(len, LSL, kPointerSizeLog2));
|
| - __ Cbnz(len, &loop);
|
| - __ Bind(&done);
|
| - }
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : argument count (len)
|
| - // -- x1 : target
|
| - // -- x3 : new.target (checked to be constructor or undefined)
|
| - // -- jssp[0] : args[len-1]
|
| - // -- jssp[8] : args[len-2]
|
| - // ... : ...
|
| - // -- jssp[8*(len-2)] : args[1]
|
| - // -- jssp[8*(len-1)] : args[0]
|
| - // -----------------------------------
|
| -
|
| - // Dispatch to Call or Construct depending on whether new.target is undefined.
|
| - {
|
| - __ CompareRoot(new_target, Heap::kUndefinedValueRootIndex);
|
| - __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET, eq);
|
| - __ 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 <- sp (f()'s caller pc is not on the stack yet!)
|
| -// ----------------------
|
| -//
|
| -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());
|
| - __ Mov(scratch1, Operand(is_tail_call_elimination_enabled));
|
| - __ Ldrb(scratch1, MemOperand(scratch1));
|
| - __ Cmp(scratch1, Operand(0));
|
| - __ B(eq, &done);
|
| -
|
| - // Drop possible interpreter handler/stub frame.
|
| - {
|
| - Label no_interpreter_frame;
|
| - __ Ldr(scratch3,
|
| - MemOperand(fp, CommonFrameConstants::kContextOrFrameTypeOffset));
|
| - __ Cmp(scratch3, Operand(Smi::FromInt(StackFrame::STUB)));
|
| - __ B(ne, &no_interpreter_frame);
|
| - __ Ldr(fp, MemOperand(fp, 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;
|
| - __ Ldr(scratch2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
|
| - __ Ldr(scratch3,
|
| - MemOperand(scratch2, CommonFrameConstants::kContextOrFrameTypeOffset));
|
| - __ Cmp(scratch3, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
|
| - __ B(ne, &no_arguments_adaptor);
|
| -
|
| - // Drop current frame and load arguments count from arguments adaptor frame.
|
| - __ mov(fp, scratch2);
|
| - __ Ldr(caller_args_count_reg,
|
| - MemOperand(fp, ArgumentsAdaptorFrameConstants::kLengthOffset));
|
| - __ SmiUntag(caller_args_count_reg);
|
| - __ B(&formal_parameter_count_loaded);
|
| -
|
| - __ bind(&no_arguments_adaptor);
|
| - // Load caller's formal parameter count
|
| - __ Ldr(scratch1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
|
| - __ Ldr(scratch1,
|
| - FieldMemOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldrsw(caller_args_count_reg,
|
| - FieldMemOperand(scratch1,
|
| - SharedFunctionInfo::kFormalParameterCountOffset));
|
| - __ bind(&formal_parameter_count_loaded);
|
| -
|
| - ParameterCount callee_args_count(args_reg);
|
| - __ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
|
| - scratch3);
|
| - __ bind(&done);
|
| -}
|
| -} // namespace
|
| -
|
| -// static
|
| -void Builtins::Generate_CallFunction(MacroAssembler* masm,
|
| - ConvertReceiverMode mode,
|
| - TailCallMode tail_call_mode) {
|
| - ASM_LOCATION("Builtins::Generate_CallFunction");
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x1 : the function to call (checked to be a JSFunction)
|
| - // -----------------------------------
|
| - __ AssertFunction(x1);
|
| -
|
| - // See ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList)
|
| - // Check that function is not a "classConstructor".
|
| - Label class_constructor;
|
| - __ Ldr(x2, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(w3, FieldMemOperand(x2, SharedFunctionInfo::kCompilerHintsOffset));
|
| - __ TestAndBranchIfAnySet(
|
| - w3, (1 << SharedFunctionInfo::kIsDefaultConstructor) |
|
| - (1 << SharedFunctionInfo::kIsSubclassConstructor) |
|
| - (1 << SharedFunctionInfo::kIsBaseConstructor),
|
| - &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.
|
| - __ Ldr(cp, FieldMemOperand(x1, JSFunction::kContextOffset));
|
| - // We need to convert the receiver for non-native sloppy mode functions.
|
| - Label done_convert;
|
| - __ TestAndBranchIfAnySet(w3,
|
| - (1 << SharedFunctionInfo::kNative) |
|
| - (1 << SharedFunctionInfo::kStrictModeFunction),
|
| - &done_convert);
|
| - {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x1 : the function to call (checked to be a JSFunction)
|
| - // -- x2 : the shared function info.
|
| - // -- cp : the function context.
|
| - // -----------------------------------
|
| -
|
| - if (mode == ConvertReceiverMode::kNullOrUndefined) {
|
| - // Patch receiver to global proxy.
|
| - __ LoadGlobalProxy(x3);
|
| - } else {
|
| - Label convert_to_object, convert_receiver;
|
| - __ Peek(x3, Operand(x0, LSL, kXRegSizeLog2));
|
| - __ JumpIfSmi(x3, &convert_to_object);
|
| - STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE);
|
| - __ CompareObjectType(x3, x4, x4, FIRST_JS_RECEIVER_TYPE);
|
| - __ B(hs, &done_convert);
|
| - if (mode != ConvertReceiverMode::kNotNullOrUndefined) {
|
| - Label convert_global_proxy;
|
| - __ JumpIfRoot(x3, Heap::kUndefinedValueRootIndex,
|
| - &convert_global_proxy);
|
| - __ JumpIfNotRoot(x3, Heap::kNullValueRootIndex, &convert_to_object);
|
| - __ Bind(&convert_global_proxy);
|
| - {
|
| - // Patch receiver to global proxy.
|
| - __ LoadGlobalProxy(x3);
|
| - }
|
| - __ B(&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(x0);
|
| - __ Push(x0, x1);
|
| - __ Mov(x0, x3);
|
| - ToObjectStub stub(masm->isolate());
|
| - __ CallStub(&stub);
|
| - __ Mov(x3, x0);
|
| - __ Pop(x1, x0);
|
| - __ SmiUntag(x0);
|
| - }
|
| - __ Ldr(x2, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Bind(&convert_receiver);
|
| - }
|
| - __ Poke(x3, Operand(x0, LSL, kXRegSizeLog2));
|
| - }
|
| - __ Bind(&done_convert);
|
| -
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x1 : the function to call (checked to be a JSFunction)
|
| - // -- x2 : the shared function info.
|
| - // -- cp : the function context.
|
| - // -----------------------------------
|
| -
|
| - if (tail_call_mode == TailCallMode::kAllow) {
|
| - PrepareForTailCall(masm, x0, x3, x4, x5);
|
| - }
|
| -
|
| - __ Ldrsw(
|
| - x2, FieldMemOperand(x2, SharedFunctionInfo::kFormalParameterCountOffset));
|
| - ParameterCount actual(x0);
|
| - ParameterCount expected(x2);
|
| - __ InvokeFunctionCode(x1, 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(x1);
|
| - __ CallRuntime(Runtime::kThrowConstructorNonCallableError);
|
| - }
|
| -}
|
| -
|
| -
|
| -namespace {
|
| -
|
| -void Generate_PushBoundArguments(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x1 : target (checked to be a JSBoundFunction)
|
| - // -- x3 : new.target (only in case of [[Construct]])
|
| - // -----------------------------------
|
| -
|
| - // Load [[BoundArguments]] into x2 and length of that into x4.
|
| - Label no_bound_arguments;
|
| - __ Ldr(x2, FieldMemOperand(x1, JSBoundFunction::kBoundArgumentsOffset));
|
| - __ Ldrsw(x4, UntagSmiFieldMemOperand(x2, FixedArray::kLengthOffset));
|
| - __ Cmp(x4, 0);
|
| - __ B(eq, &no_bound_arguments);
|
| - {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x1 : target (checked to be a JSBoundFunction)
|
| - // -- x2 : the [[BoundArguments]] (implemented as FixedArray)
|
| - // -- x3 : new.target (only in case of [[Construct]])
|
| - // -- x4 : the number of [[BoundArguments]]
|
| - // -----------------------------------
|
| -
|
| - // Reserve stack space for the [[BoundArguments]].
|
| - {
|
| - Label done;
|
| - __ Claim(x4);
|
| - // 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(jssp, Heap::kRealStackLimitRootIndex);
|
| - __ B(gt, &done); // Signed comparison.
|
| - // Restore the stack pointer.
|
| - __ Drop(x4);
|
| - {
|
| - FrameScope scope(masm, StackFrame::MANUAL);
|
| - __ EnterFrame(StackFrame::INTERNAL);
|
| - __ CallRuntime(Runtime::kThrowStackOverflow);
|
| - }
|
| - __ Bind(&done);
|
| - }
|
| -
|
| - // Relocate arguments down the stack.
|
| - {
|
| - Label loop, done_loop;
|
| - __ Mov(x5, 0);
|
| - __ Bind(&loop);
|
| - __ Cmp(x5, x0);
|
| - __ B(gt, &done_loop);
|
| - __ Peek(x10, Operand(x4, LSL, kPointerSizeLog2));
|
| - __ Poke(x10, Operand(x5, LSL, kPointerSizeLog2));
|
| - __ Add(x4, x4, 1);
|
| - __ Add(x5, x5, 1);
|
| - __ B(&loop);
|
| - __ Bind(&done_loop);
|
| - }
|
| -
|
| - // Copy [[BoundArguments]] to the stack (below the arguments).
|
| - {
|
| - Label loop;
|
| - __ Ldrsw(x4, UntagSmiFieldMemOperand(x2, FixedArray::kLengthOffset));
|
| - __ Add(x2, x2, FixedArray::kHeaderSize - kHeapObjectTag);
|
| - __ Bind(&loop);
|
| - __ Sub(x4, x4, 1);
|
| - __ Ldr(x10, MemOperand(x2, x4, LSL, kPointerSizeLog2));
|
| - __ Poke(x10, Operand(x0, LSL, kPointerSizeLog2));
|
| - __ Add(x0, x0, 1);
|
| - __ Cmp(x4, 0);
|
| - __ B(gt, &loop);
|
| - }
|
| - }
|
| - __ Bind(&no_bound_arguments);
|
| -}
|
| -
|
| -} // namespace
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
|
| - TailCallMode tail_call_mode) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x1 : the function to call (checked to be a JSBoundFunction)
|
| - // -----------------------------------
|
| - __ AssertBoundFunction(x1);
|
| -
|
| - if (tail_call_mode == TailCallMode::kAllow) {
|
| - PrepareForTailCall(masm, x0, x3, x4, x5);
|
| - }
|
| -
|
| - // Patch the receiver to [[BoundThis]].
|
| - __ Ldr(x10, FieldMemOperand(x1, JSBoundFunction::kBoundThisOffset));
|
| - __ Poke(x10, Operand(x0, LSL, kPointerSizeLog2));
|
| -
|
| - // Push the [[BoundArguments]] onto the stack.
|
| - Generate_PushBoundArguments(masm);
|
| -
|
| - // Call the [[BoundTargetFunction]] via the Call builtin.
|
| - __ Ldr(x1, FieldMemOperand(x1, JSBoundFunction::kBoundTargetFunctionOffset));
|
| - __ Mov(x10,
|
| - ExternalReference(Builtins::kCall_ReceiverIsAny, masm->isolate()));
|
| - __ Ldr(x11, MemOperand(x10));
|
| - __ Add(x12, x11, Code::kHeaderSize - kHeapObjectTag);
|
| - __ Br(x12);
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
|
| - TailCallMode tail_call_mode) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x1 : the target to call (can be any Object).
|
| - // -----------------------------------
|
| -
|
| - Label non_callable, non_function, non_smi;
|
| - __ JumpIfSmi(x1, &non_callable);
|
| - __ Bind(&non_smi);
|
| - __ CompareObjectType(x1, x4, x5, JS_FUNCTION_TYPE);
|
| - __ Jump(masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
|
| - RelocInfo::CODE_TARGET, eq);
|
| - __ Cmp(x5, JS_BOUND_FUNCTION_TYPE);
|
| - __ Jump(masm->isolate()->builtins()->CallBoundFunction(tail_call_mode),
|
| - RelocInfo::CODE_TARGET, eq);
|
| -
|
| - // Check if target has a [[Call]] internal method.
|
| - __ Ldrb(x4, FieldMemOperand(x4, Map::kBitFieldOffset));
|
| - __ TestAndBranchIfAllClear(x4, 1 << Map::kIsCallable, &non_callable);
|
| -
|
| - __ Cmp(x5, JS_PROXY_TYPE);
|
| - __ B(ne, &non_function);
|
| -
|
| - // 0. Prepare for tail call if necessary.
|
| - if (tail_call_mode == TailCallMode::kAllow) {
|
| - PrepareForTailCall(masm, x0, x3, x4, x5);
|
| - }
|
| -
|
| - // 1. Runtime fallback for Proxy [[Call]].
|
| - __ Push(x1);
|
| - // Increase the arguments size to include the pushed function and the
|
| - // existing receiver on the stack.
|
| - __ Add(x0, x0, Operand(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.
|
| - __ Poke(x1, Operand(x0, LSL, kXRegSizeLog2));
|
| - // Let the "call_as_function_delegate" take care of the rest.
|
| - __ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, x1);
|
| - __ 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(x1);
|
| - __ CallRuntime(Runtime::kThrowCalledNonCallable);
|
| - }
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_ConstructFunction(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x1 : the constructor to call (checked to be a JSFunction)
|
| - // -- x3 : the new target (checked to be a constructor)
|
| - // -----------------------------------
|
| - __ AssertFunction(x1);
|
| -
|
| - // Calling convention for function specific ConstructStubs require
|
| - // x2 to contain either an AllocationSite or undefined.
|
| - __ LoadRoot(x2, Heap::kUndefinedValueRootIndex);
|
| -
|
| - // Tail call to the function-specific construct stub (still in the caller
|
| - // context at this point).
|
| - __ Ldr(x4, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
|
| - __ Ldr(x4, FieldMemOperand(x4, SharedFunctionInfo::kConstructStubOffset));
|
| - __ Add(x4, x4, Code::kHeaderSize - kHeapObjectTag);
|
| - __ Br(x4);
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x1 : the function to call (checked to be a JSBoundFunction)
|
| - // -- x3 : the new target (checked to be a constructor)
|
| - // -----------------------------------
|
| - __ AssertBoundFunction(x1);
|
| -
|
| - // Push the [[BoundArguments]] onto the stack.
|
| - Generate_PushBoundArguments(masm);
|
| -
|
| - // Patch new.target to [[BoundTargetFunction]] if new.target equals target.
|
| - {
|
| - Label done;
|
| - __ Cmp(x1, x3);
|
| - __ B(ne, &done);
|
| - __ Ldr(x3,
|
| - FieldMemOperand(x1, JSBoundFunction::kBoundTargetFunctionOffset));
|
| - __ Bind(&done);
|
| - }
|
| -
|
| - // Construct the [[BoundTargetFunction]] via the Construct builtin.
|
| - __ Ldr(x1, FieldMemOperand(x1, JSBoundFunction::kBoundTargetFunctionOffset));
|
| - __ Mov(x10, ExternalReference(Builtins::kConstruct, masm->isolate()));
|
| - __ Ldr(x11, MemOperand(x10));
|
| - __ Add(x12, x11, Code::kHeaderSize - kHeapObjectTag);
|
| - __ Br(x12);
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_ConstructProxy(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x1 : the constructor to call (checked to be a JSProxy)
|
| - // -- x3 : the new target (either the same as the constructor or
|
| - // the JSFunction on which new was invoked initially)
|
| - // -----------------------------------
|
| -
|
| - // Call into the Runtime for Proxy [[Construct]].
|
| - __ Push(x1);
|
| - __ Push(x3);
|
| - // Include the pushed new_target, constructor and the receiver.
|
| - __ Add(x0, x0, 3);
|
| - // Tail-call to the runtime.
|
| - __ JumpToExternalReference(
|
| - ExternalReference(Runtime::kJSProxyConstruct, masm->isolate()));
|
| -}
|
| -
|
| -
|
| -// static
|
| -void Builtins::Generate_Construct(MacroAssembler* masm) {
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : the number of arguments (not including the receiver)
|
| - // -- x1 : the constructor to call (can be any Object)
|
| - // -- x3 : the new target (either the same as the constructor or
|
| - // the JSFunction on which new was invoked initially)
|
| - // -----------------------------------
|
| -
|
| - // Check if target is a Smi.
|
| - Label non_constructor;
|
| - __ JumpIfSmi(x1, &non_constructor);
|
| -
|
| - // Dispatch based on instance type.
|
| - __ CompareObjectType(x1, x4, x5, JS_FUNCTION_TYPE);
|
| - __ Jump(masm->isolate()->builtins()->ConstructFunction(),
|
| - RelocInfo::CODE_TARGET, eq);
|
| -
|
| - // Check if target has a [[Construct]] internal method.
|
| - __ Ldrb(x2, FieldMemOperand(x4, Map::kBitFieldOffset));
|
| - __ TestAndBranchIfAllClear(x2, 1 << Map::kIsConstructor, &non_constructor);
|
| -
|
| - // Only dispatch to bound functions after checking whether they are
|
| - // constructors.
|
| - __ Cmp(x5, JS_BOUND_FUNCTION_TYPE);
|
| - __ Jump(masm->isolate()->builtins()->ConstructBoundFunction(),
|
| - RelocInfo::CODE_TARGET, eq);
|
| -
|
| - // Only dispatch to proxies after checking whether they are constructors.
|
| - __ Cmp(x5, JS_PROXY_TYPE);
|
| - __ Jump(masm->isolate()->builtins()->ConstructProxy(), RelocInfo::CODE_TARGET,
|
| - eq);
|
| -
|
| - // Called Construct on an exotic Object with a [[Construct]] internal method.
|
| - {
|
| - // Overwrite the original receiver with the (original) target.
|
| - __ Poke(x1, Operand(x0, LSL, kXRegSizeLog2));
|
| - // Let the "call_as_constructor_delegate" take care of the rest.
|
| - __ LoadNativeContextSlot(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, x1);
|
| - __ 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) {
|
| - ASM_LOCATION("Builtins::Generate_AllocateInNewSpace");
|
| - // ----------- S t a t e -------------
|
| - // -- x1 : requested object size (untagged)
|
| - // -- lr : return address
|
| - // -----------------------------------
|
| - __ SmiTag(x1);
|
| - __ Push(x1);
|
| - __ Move(cp, Smi::FromInt(0));
|
| - __ TailCallRuntime(Runtime::kAllocateInNewSpace);
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_AllocateInOldSpace(MacroAssembler* masm) {
|
| - ASM_LOCATION("Builtins::Generate_AllocateInOldSpace");
|
| - // ----------- S t a t e -------------
|
| - // -- x1 : requested object size (untagged)
|
| - // -- lr : return address
|
| - // -----------------------------------
|
| - __ SmiTag(x1);
|
| - __ Move(x2, Smi::FromInt(AllocateTargetSpace::encode(OLD_SPACE)));
|
| - __ Push(x1, x2);
|
| - __ Move(cp, Smi::FromInt(0));
|
| - __ TailCallRuntime(Runtime::kAllocateInTargetSpace);
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_StringToNumber(MacroAssembler* masm) {
|
| - // The StringToNumber stub takes one argument in x0.
|
| - __ AssertString(x0);
|
| -
|
| - // Check if string has a cached array index.
|
| - Label runtime;
|
| - __ Ldr(x2, FieldMemOperand(x0, String::kHashFieldOffset));
|
| - __ Tst(x2, Operand(String::kContainsCachedArrayIndexMask));
|
| - __ B(ne, &runtime);
|
| - __ IndexFromHash(x2, x0);
|
| - __ Ret();
|
| -
|
| - __ Bind(&runtime);
|
| - {
|
| - FrameScope frame(masm, StackFrame::INTERNAL);
|
| - // Push argument.
|
| - __ Push(x0);
|
| - // 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 x0.
|
| - Label not_smi;
|
| - __ JumpIfNotSmi(x0, ¬_smi);
|
| - __ Ret();
|
| - __ Bind(¬_smi);
|
| -
|
| - Label not_heap_number;
|
| - __ CompareObjectType(x0, x1, x1, HEAP_NUMBER_TYPE);
|
| - // x0: receiver
|
| - // x1: receiver instance type
|
| - __ B(ne, ¬_heap_number);
|
| - __ Ret();
|
| - __ Bind(¬_heap_number);
|
| -
|
| - __ Jump(masm->isolate()->builtins()->NonNumberToNumber(),
|
| - RelocInfo::CODE_TARGET);
|
| -}
|
| -
|
| -// static
|
| -void Builtins::Generate_NonNumberToNumber(MacroAssembler* masm) {
|
| - // The NonNumberToNumber stub takes one argument in x0.
|
| - __ AssertNotNumber(x0);
|
| -
|
| - Label not_string;
|
| - __ CompareObjectType(x0, x1, x1, FIRST_NONSTRING_TYPE);
|
| - // x0: receiver
|
| - // x1: receiver instance type
|
| - __ B(hs, ¬_string);
|
| - __ Jump(masm->isolate()->builtins()->StringToNumber(),
|
| - RelocInfo::CODE_TARGET);
|
| - __ Bind(¬_string);
|
| -
|
| - Label not_oddball;
|
| - __ Cmp(x1, ODDBALL_TYPE);
|
| - __ B(ne, ¬_oddball);
|
| - __ Ldr(x0, FieldMemOperand(x0, Oddball::kToNumberOffset));
|
| - __ Ret();
|
| - __ Bind(¬_oddball);
|
| - {
|
| - FrameScope frame(masm, StackFrame::INTERNAL);
|
| - // Push argument.
|
| - __ Push(x0);
|
| - // 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) {
|
| - ASM_LOCATION("Builtins::Generate_ArgumentsAdaptorTrampoline");
|
| - // ----------- S t a t e -------------
|
| - // -- x0 : actual number of arguments
|
| - // -- x1 : function (passed through to callee)
|
| - // -- x2 : expected number of arguments
|
| - // -- x3 : new target (passed through to callee)
|
| - // -----------------------------------
|
| -
|
| - Register argc_actual = x0; // Excluding the receiver.
|
| - Register argc_expected = x2; // Excluding the receiver.
|
| - Register function = x1;
|
| - Register code_entry = x10;
|
| -
|
| - Label invoke, dont_adapt_arguments, stack_overflow;
|
| -
|
| - Label enough, too_few;
|
| - __ Cmp(argc_actual, argc_expected);
|
| - __ B(lt, &too_few);
|
| - __ Cmp(argc_expected, SharedFunctionInfo::kDontAdaptArgumentsSentinel);
|
| - __ B(eq, &dont_adapt_arguments);
|
| -
|
| - { // Enough parameters: actual >= expected
|
| - EnterArgumentsAdaptorFrame(masm);
|
| - ArgumentAdaptorStackCheck(masm, &stack_overflow);
|
| -
|
| - Register copy_start = x10;
|
| - Register copy_end = x11;
|
| - Register copy_to = x12;
|
| - Register scratch1 = x13, scratch2 = x14;
|
| -
|
| - __ Lsl(scratch2, argc_expected, kPointerSizeLog2);
|
| -
|
| - // Adjust for fp, lr, and the receiver.
|
| - __ Add(copy_start, fp, 3 * kPointerSize);
|
| - __ Add(copy_start, copy_start, Operand(argc_actual, LSL, kPointerSizeLog2));
|
| - __ Sub(copy_end, copy_start, scratch2);
|
| - __ Sub(copy_end, copy_end, kPointerSize);
|
| - __ Mov(copy_to, jssp);
|
| -
|
| - // Claim space for the arguments, the receiver, and one extra slot.
|
| - // The extra slot ensures we do not write under jssp. It will be popped
|
| - // later.
|
| - __ Add(scratch1, scratch2, 2 * kPointerSize);
|
| - __ Claim(scratch1, 1);
|
| -
|
| - // Copy the arguments (including the receiver) to the new stack frame.
|
| - Label copy_2_by_2;
|
| - __ Bind(©_2_by_2);
|
| - __ Ldp(scratch1, scratch2,
|
| - MemOperand(copy_start, - 2 * kPointerSize, PreIndex));
|
| - __ Stp(scratch1, scratch2,
|
| - MemOperand(copy_to, - 2 * kPointerSize, PreIndex));
|
| - __ Cmp(copy_start, copy_end);
|
| - __ B(hi, ©_2_by_2);
|
| -
|
| - // Correct the space allocated for the extra slot.
|
| - __ Drop(1);
|
| -
|
| - __ B(&invoke);
|
| - }
|
| -
|
| - { // Too few parameters: Actual < expected
|
| - __ Bind(&too_few);
|
| -
|
| - Register copy_from = x10;
|
| - Register copy_end = x11;
|
| - Register copy_to = x12;
|
| - Register scratch1 = x13, scratch2 = x14;
|
| -
|
| - EnterArgumentsAdaptorFrame(masm);
|
| - ArgumentAdaptorStackCheck(masm, &stack_overflow);
|
| -
|
| - __ Lsl(scratch2, argc_expected, kPointerSizeLog2);
|
| - __ Lsl(argc_actual, argc_actual, kPointerSizeLog2);
|
| -
|
| - // Adjust for fp, lr, and the receiver.
|
| - __ Add(copy_from, fp, 3 * kPointerSize);
|
| - __ Add(copy_from, copy_from, argc_actual);
|
| - __ Mov(copy_to, jssp);
|
| - __ Sub(copy_end, copy_to, 1 * kPointerSize); // Adjust for the receiver.
|
| - __ Sub(copy_end, copy_end, argc_actual);
|
| -
|
| - // Claim space for the arguments, the receiver, and one extra slot.
|
| - // The extra slot ensures we do not write under jssp. It will be popped
|
| - // later.
|
| - __ Add(scratch1, scratch2, 2 * kPointerSize);
|
| - __ Claim(scratch1, 1);
|
| -
|
| - // Copy the arguments (including the receiver) to the new stack frame.
|
| - Label copy_2_by_2;
|
| - __ Bind(©_2_by_2);
|
| - __ Ldp(scratch1, scratch2,
|
| - MemOperand(copy_from, - 2 * kPointerSize, PreIndex));
|
| - __ Stp(scratch1, scratch2,
|
| - MemOperand(copy_to, - 2 * kPointerSize, PreIndex));
|
| - __ Cmp(copy_to, copy_end);
|
| - __ B(hi, ©_2_by_2);
|
| -
|
| - __ Mov(copy_to, copy_end);
|
| -
|
| - // Fill the remaining expected arguments with undefined.
|
| - __ LoadRoot(scratch1, Heap::kUndefinedValueRootIndex);
|
| - __ Add(copy_end, jssp, kPointerSize);
|
| -
|
| - Label fill;
|
| - __ Bind(&fill);
|
| - __ Stp(scratch1, scratch1,
|
| - MemOperand(copy_to, - 2 * kPointerSize, PreIndex));
|
| - __ Cmp(copy_to, copy_end);
|
| - __ B(hi, &fill);
|
| -
|
| - // Correct the space allocated for the extra slot.
|
| - __ Drop(1);
|
| - }
|
| -
|
| - // Arguments have been adapted. Now call the entry point.
|
| - __ Bind(&invoke);
|
| - __ Mov(argc_actual, argc_expected);
|
| - // x0 : expected number of arguments
|
| - // x1 : function (passed through to callee)
|
| - // x3 : new target (passed through to callee)
|
| - __ Ldr(code_entry, FieldMemOperand(function, JSFunction::kCodeEntryOffset));
|
| - __ Call(code_entry);
|
| -
|
| - // Store offset of return address for deoptimizer.
|
| - masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset());
|
| -
|
| - // Exit frame and return.
|
| - LeaveArgumentsAdaptorFrame(masm);
|
| - __ Ret();
|
| -
|
| - // Call the entry point without adapting the arguments.
|
| - __ Bind(&dont_adapt_arguments);
|
| - __ Ldr(code_entry, FieldMemOperand(function, JSFunction::kCodeEntryOffset));
|
| - __ Jump(code_entry);
|
| -
|
| - __ Bind(&stack_overflow);
|
| - {
|
| - FrameScope frame(masm, StackFrame::MANUAL);
|
| - __ CallRuntime(Runtime::kThrowStackOverflow);
|
| - __ Unreachable();
|
| - }
|
| -}
|
| -
|
| -
|
| -#undef __
|
| -
|
| -} // namespace internal
|
| -} // namespace v8
|
| -
|
| -#endif // V8_TARGET_ARCH_ARM
|
|
|
Chromium Code Reviews
Issue 2145023002:
[builtins] move builtin files to src/builtins/. (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master