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

Issue 2145023002: [builtins] move builtin files to src/builtins/. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: rebase Created 4 years, 5 months ago
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Index: src/arm/builtins-arm.cc
diff --git a/src/arm/builtins-arm.cc b/src/arm/builtins-arm.cc
deleted file mode 100644
index 3c24caadeac166c2846cf62ef206e7c00e6a7dea..0000000000000000000000000000000000000000
--- a/src/arm/builtins-arm.cc
+++ /dev/null
@@ -1,2988 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#if V8_TARGET_ARCH_ARM
-
-#include "src/codegen.h"
-#include "src/debug/debug.h"
-#include "src/deoptimizer.h"
-#include "src/full-codegen/full-codegen.h"
-#include "src/runtime/runtime.h"
-
-namespace v8 {
-namespace internal {
-
-
-#define __ ACCESS_MASM(masm)
-
-void Builtins::Generate_Adaptor(MacroAssembler* masm, CFunctionId id,
- ExitFrameType exit_frame_type) {
- // ----------- S t a t e -------------
- // -- r0 : number of arguments excluding receiver
- // -- r1 : target
- // -- r3 : new.target
- // -- sp[0] : last argument
- // -- ...
- // -- sp[4 * (argc - 1)] : first argument
- // -- sp[4 * argc] : receiver
- // -----------------------------------
- __ AssertFunction(r1);
-
- // 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(r1, JSFunction::kContextOffset));
-
- // JumpToExternalReference expects r0 to contain the number of arguments
- // including the receiver and the extra arguments.
- const int num_extra_args = 3;
- __ add(r0, r0, Operand(num_extra_args + 1));
-
- // Insert extra arguments.
- __ SmiTag(r0);
- __ Push(r0, r1, r3);
- __ SmiUntag(r0);
-
- __ JumpToExternalReference(ExternalReference(id, masm->isolate()),
- exit_frame_type == BUILTIN_EXIT);
-}
-
-
-// Load the built-in InternalArray function from the current context.
-static void GenerateLoadInternalArrayFunction(MacroAssembler* masm,
- Register result) {
- // Load the InternalArray function from the current native context.
- __ LoadNativeContextSlot(Context::INTERNAL_ARRAY_FUNCTION_INDEX, result);
-}
-
-
-// Load the built-in Array function from the current context.
-static void GenerateLoadArrayFunction(MacroAssembler* masm, Register result) {
- // Load the Array function from the current native context.
- __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, result);
-}
-
-
-void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : number of arguments
- // -- lr : return address
- // -- sp[...]: constructor arguments
- // -----------------------------------
- Label generic_array_code, one_or_more_arguments, two_or_more_arguments;
-
- // Get the InternalArray function.
- GenerateLoadInternalArrayFunction(masm, r1);
-
- if (FLAG_debug_code) {
- // Initial map for the builtin InternalArray functions should be maps.
- __ ldr(r2, FieldMemOperand(r1, JSFunction::kPrototypeOrInitialMapOffset));
- __ SmiTst(r2);
- __ Assert(ne, kUnexpectedInitialMapForInternalArrayFunction);
- __ CompareObjectType(r2, r3, r4, MAP_TYPE);
- __ Assert(eq, kUnexpectedInitialMapForInternalArrayFunction);
- }
-
- // Run the native code for the InternalArray function called as a normal
- // function.
- // tail call a stub
- InternalArrayConstructorStub stub(masm->isolate());
- __ TailCallStub(&stub);
-}
-
-
-void Builtins::Generate_ArrayCode(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : number of arguments
- // -- lr : return address
- // -- sp[...]: constructor arguments
- // -----------------------------------
- Label generic_array_code, one_or_more_arguments, two_or_more_arguments;
-
- // Get the Array function.
- GenerateLoadArrayFunction(masm, r1);
-
- if (FLAG_debug_code) {
- // Initial map for the builtin Array functions should be maps.
- __ ldr(r2, FieldMemOperand(r1, JSFunction::kPrototypeOrInitialMapOffset));
- __ SmiTst(r2);
- __ Assert(ne, kUnexpectedInitialMapForArrayFunction);
- __ CompareObjectType(r2, r3, r4, MAP_TYPE);
- __ Assert(eq, kUnexpectedInitialMapForArrayFunction);
- }
-
- __ mov(r3, r1);
- // Run the native code for the Array function called as a normal function.
- // tail call a stub
- __ LoadRoot(r2, Heap::kUndefinedValueRootIndex);
- ArrayConstructorStub stub(masm->isolate());
- __ TailCallStub(&stub);
-}
-
-
-// static
-void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) {
- // ----------- S t a t e -------------
- // -- r0 : number of arguments
- // -- r1 : function
- // -- cp : context
- // -- lr : return address
- // -- sp[(argc - n - 1) * 4] : arg[n] (zero based)
- // -- sp[argc * 4] : receiver
- // -----------------------------------
- Condition const cc_done = (kind == MathMaxMinKind::kMin) ? mi : gt;
- Condition const cc_swap = (kind == MathMaxMinKind::kMin) ? gt : mi;
- Heap::RootListIndex const root_index =
- (kind == MathMaxMinKind::kMin) ? Heap::kInfinityValueRootIndex
- : Heap::kMinusInfinityValueRootIndex;
- DoubleRegister const reg = (kind == MathMaxMinKind::kMin) ? d2 : d1;
-
- // Load the accumulator with the default return value (either -Infinity or
- // +Infinity), with the tagged value in r5 and the double value in d1.
- __ LoadRoot(r5, root_index);
- __ vldr(d1, FieldMemOperand(r5, HeapNumber::kValueOffset));
-
- Label done_loop, loop;
- __ mov(r4, r0);
- __ bind(&loop);
- {
- // Check if all parameters done.
- __ sub(r4, r4, Operand(1), SetCC);
- __ b(lt, &done_loop);
-
- // Load the next parameter tagged value into r2.
- __ ldr(r2, MemOperand(sp, r4, 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, convert_smi, convert_number, done_convert;
- __ bind(&convert);
- __ JumpIfSmi(r2, &convert_smi);
- __ ldr(r3, FieldMemOperand(r2, HeapObject::kMapOffset));
- __ JumpIfRoot(r3, Heap::kHeapNumberMapRootIndex, &convert_number);
- {
- // Parameter is not a Number, use the ToNumber builtin to convert it.
- DCHECK(!FLAG_enable_embedded_constant_pool);
- FrameScope scope(masm, StackFrame::MANUAL);
- __ SmiTag(r0);
- __ SmiTag(r4);
- __ EnterBuiltinFrame(cp, r1, r0);
- __ Push(r4, r5);
- __ mov(r0, r2);
- __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
- __ mov(r2, r0);
- __ Pop(r4, r5);
- __ LeaveBuiltinFrame(cp, r1, r0);
- __ SmiUntag(r4);
- __ SmiUntag(r0);
- {
- // Restore the double accumulator value (d1).
- Label done_restore;
- __ SmiToDouble(d1, r5);
- __ JumpIfSmi(r5, &done_restore);
- __ vldr(d1, FieldMemOperand(r5, HeapNumber::kValueOffset));
- __ bind(&done_restore);
- }
- }
- __ b(&convert);
- __ bind(&convert_number);
- __ vldr(d2, FieldMemOperand(r2, HeapNumber::kValueOffset));
- __ b(&done_convert);
- __ bind(&convert_smi);
- __ SmiToDouble(d2, r2);
- __ bind(&done_convert);
-
- // Perform the actual comparison with the accumulator value on the left hand
- // side (d1) and the next parameter value on the right hand side (d2).
- Label compare_nan, compare_swap;
- __ VFPCompareAndSetFlags(d1, d2);
- __ b(cc_done, &loop);
- __ b(cc_swap, &compare_swap);
- __ b(vs, &compare_nan);
-
- // Left and right hand side are equal, check for -0 vs. +0.
- __ VmovHigh(ip, reg);
- __ cmp(ip, Operand(0x80000000));
- __ b(ne, &loop);
-
- // Result is on the right hand side.
- __ bind(&compare_swap);
- __ vmov(d1, d2);
- __ mov(r5, r2);
- __ b(&loop);
-
- // At least one side is NaN, which means that the result will be NaN too.
- __ bind(&compare_nan);
- __ LoadRoot(r5, Heap::kNanValueRootIndex);
- __ vldr(d1, FieldMemOperand(r5, HeapNumber::kValueOffset));
- __ b(&loop);
- }
-
- __ bind(&done_loop);
- // Drop all slots, including the receiver.
- __ add(r0, r0, Operand(1));
- __ Drop(r0);
- __ mov(r0, r5);
- __ Ret();
-}
-
-// static
-void Builtins::Generate_NumberConstructor(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : number of arguments
- // -- r1 : constructor function
- // -- cp : context
- // -- lr : return address
- // -- sp[(argc - n - 1) * 4] : arg[n] (zero based)
- // -- sp[argc * 4] : receiver
- // -----------------------------------
-
- // 1. Load the first argument into r0.
- Label no_arguments;
- {
- __ mov(r2, r0); // Store argc in r2.
- __ sub(r0, r0, Operand(1), SetCC);
- __ b(lo, &no_arguments);
- __ ldr(r0, MemOperand(sp, r0, LSL, kPointerSizeLog2));
- }
-
- // 2a. Convert the first argument to a number.
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- __ SmiTag(r2);
- __ EnterBuiltinFrame(cp, r1, r2);
- __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
- __ LeaveBuiltinFrame(cp, r1, r2);
- __ SmiUntag(r2);
- }
-
- {
- // Drop all arguments including the receiver.
- __ Drop(r2);
- __ Ret(1);
- }
-
- // 2b. No arguments, return +0.
- __ bind(&no_arguments);
- __ Move(r0, Smi::FromInt(0));
- __ Ret(1);
-}
-
-
-// static
-void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : number of arguments
- // -- r1 : constructor function
- // -- r3 : new target
- // -- cp : context
- // -- lr : return address
- // -- sp[(argc - n - 1) * 4] : arg[n] (zero based)
- // -- sp[argc * 4] : receiver
- // -----------------------------------
-
- // 1. Make sure we operate in the context of the called function.
- __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset));
-
- // 2. Load the first argument into r2.
- {
- Label no_arguments, done;
- __ mov(r6, r0); // Store argc in r6.
- __ sub(r0, r0, Operand(1), SetCC);
- __ b(lo, &no_arguments);
- __ ldr(r2, MemOperand(sp, r0, LSL, kPointerSizeLog2));
- __ b(&done);
- __ bind(&no_arguments);
- __ Move(r2, Smi::FromInt(0));
- __ bind(&done);
- }
-
- // 3. Make sure r2 is a number.
- {
- Label done_convert;
- __ JumpIfSmi(r2, &done_convert);
- __ CompareObjectType(r2, r4, r4, HEAP_NUMBER_TYPE);
- __ b(eq, &done_convert);
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- __ SmiTag(r6);
- __ EnterBuiltinFrame(cp, r1, r6);
- __ Push(r3);
- __ Move(r0, r2);
- __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
- __ Move(r2, r0);
- __ Pop(r3);
- __ LeaveBuiltinFrame(cp, r1, r6);
- __ SmiUntag(r6);
- }
- __ bind(&done_convert);
- }
-
- // 4. Check if new target and constructor differ.
- Label drop_frame_and_ret, new_object;
- __ cmp(r1, r3);
- __ b(ne, &new_object);
-
- // 5. Allocate a JSValue wrapper for the number.
- __ AllocateJSValue(r0, r1, r2, r4, r5, &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(r6);
- __ EnterBuiltinFrame(cp, r1, r6);
- __ Push(r2); // first argument
- __ CallStub(&stub);
- __ Pop(r2);
- __ LeaveBuiltinFrame(cp, r1, r6);
- __ SmiUntag(r6);
- }
- __ str(r2, FieldMemOperand(r0, JSValue::kValueOffset));
-
- __ bind(&drop_frame_and_ret);
- {
- __ Drop(r6);
- __ Ret(1);
- }
-}
-
-
-// static
-void Builtins::Generate_StringConstructor(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : number of arguments
- // -- r1 : constructor function
- // -- cp : context
- // -- lr : return address
- // -- sp[(argc - n - 1) * 4] : arg[n] (zero based)
- // -- sp[argc * 4] : receiver
- // -----------------------------------
-
- // 1. Load the first argument into r0.
- Label no_arguments;
- {
- __ mov(r2, r0); // Store argc in r2.
- __ sub(r0, r0, Operand(1), SetCC);
- __ b(lo, &no_arguments);
- __ ldr(r0, MemOperand(sp, r0, LSL, kPointerSizeLog2));
- }
-
- // 2a. At least one argument, return r0 if it's a string, otherwise
- // dispatch to appropriate conversion.
- Label drop_frame_and_ret, to_string, symbol_descriptive_string;
- {
- __ JumpIfSmi(r0, &to_string);
- STATIC_ASSERT(FIRST_NONSTRING_TYPE == SYMBOL_TYPE);
- __ CompareObjectType(r0, r3, r3, 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(r0, Heap::kempty_stringRootIndex);
- __ Ret(1);
- }
-
- // 3a. Convert r0 to a string.
- __ bind(&to_string);
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- ToStringStub stub(masm->isolate());
- __ SmiTag(r2);
- __ EnterBuiltinFrame(cp, r1, r2);
- __ CallStub(&stub);
- __ LeaveBuiltinFrame(cp, r1, r2);
- __ SmiUntag(r2);
- }
- __ b(&drop_frame_and_ret);
-
- // 3b. Convert symbol in r0 to a string.
- __ bind(&symbol_descriptive_string);
- {
- __ Drop(r2);
- __ Drop(1);
- __ Push(r0);
- __ TailCallRuntime(Runtime::kSymbolDescriptiveString);
- }
-
- __ bind(&drop_frame_and_ret);
- {
- __ Drop(r2);
- __ Ret(1);
- }
-}
-
-
-// static
-void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : number of arguments
- // -- r1 : constructor function
- // -- r3 : new target
- // -- cp : context
- // -- lr : return address
- // -- sp[(argc - n - 1) * 4] : arg[n] (zero based)
- // -- sp[argc * 4] : receiver
- // -----------------------------------
-
- // 1. Make sure we operate in the context of the called function.
- __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset));
-
- // 2. Load the first argument into r2.
- {
- Label no_arguments, done;
- __ mov(r6, r0); // Store argc in r6.
- __ sub(r0, r0, Operand(1), SetCC);
- __ b(lo, &no_arguments);
- __ ldr(r2, MemOperand(sp, r0, LSL, kPointerSizeLog2));
- __ b(&done);
- __ bind(&no_arguments);
- __ LoadRoot(r2, Heap::kempty_stringRootIndex);
- __ bind(&done);
- }
-
- // 3. Make sure r2 is a string.
- {
- Label convert, done_convert;
- __ JumpIfSmi(r2, &convert);
- __ CompareObjectType(r2, r4, r4, FIRST_NONSTRING_TYPE);
- __ b(lo, &done_convert);
- __ bind(&convert);
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- ToStringStub stub(masm->isolate());
- __ SmiTag(r6);
- __ EnterBuiltinFrame(cp, r1, r6);
- __ Push(r3);
- __ Move(r0, r2);
- __ CallStub(&stub);
- __ Move(r2, r0);
- __ Pop(r3);
- __ LeaveBuiltinFrame(cp, r1, r6);
- __ SmiUntag(r6);
- }
- __ bind(&done_convert);
- }
-
- // 4. Check if new target and constructor differ.
- Label drop_frame_and_ret, new_object;
- __ cmp(r1, r3);
- __ b(ne, &new_object);
-
- // 5. Allocate a JSValue wrapper for the string.
- __ AllocateJSValue(r0, r1, r2, r4, r5, &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(r6);
- __ EnterBuiltinFrame(cp, r1, r6);
- __ Push(r2); // first argument
- __ CallStub(&stub);
- __ Pop(r2);
- __ LeaveBuiltinFrame(cp, r1, r6);
- __ SmiUntag(r6);
- }
- __ str(r2, FieldMemOperand(r0, JSValue::kValueOffset));
-
- __ bind(&drop_frame_and_ret);
- {
- __ Drop(r6);
- __ Ret(1);
- }
-}
-
-
-static void GenerateTailCallToSharedCode(MacroAssembler* masm) {
- __ ldr(r2, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
- __ ldr(r2, FieldMemOperand(r2, SharedFunctionInfo::kCodeOffset));
- __ add(r2, r2, Operand(Code::kHeaderSize - kHeapObjectTag));
- __ Jump(r2);
-}
-
-static void GenerateTailCallToReturnedCode(MacroAssembler* masm,
- Runtime::FunctionId function_id) {
- // ----------- S t a t e -------------
- // -- r0 : argument count (preserved for callee)
- // -- r1 : target function (preserved for callee)
- // -- r3 : new target (preserved for callee)
- // -----------------------------------
- {
- FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
- // Push the number of arguments to the callee.
- __ SmiTag(r0);
- __ push(r0);
- // Push a copy of the target function and the new target.
- __ push(r1);
- __ push(r3);
- // Push function as parameter to the runtime call.
- __ Push(r1);
-
- __ CallRuntime(function_id, 1);
- __ mov(r2, r0);
-
- // Restore target function and new target.
- __ pop(r3);
- __ pop(r1);
- __ pop(r0);
- __ SmiUntag(r0, r0);
- }
- __ add(r2, r2, Operand(Code::kHeaderSize - kHeapObjectTag));
- __ Jump(r2);
-}
-
-
-void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) {
- // Checking whether the queued function is ready for install is optional,
- // since we come across interrupts and stack checks elsewhere. However,
- // not checking may delay installing ready functions, and always checking
- // would be quite expensive. A good compromise is to first check against
- // stack limit as a cue for an interrupt signal.
- Label ok;
- __ LoadRoot(ip, Heap::kStackLimitRootIndex);
- __ cmp(sp, Operand(ip));
- __ 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 -------------
- // -- r0 : number of arguments
- // -- r1 : constructor function
- // -- r2 : allocation site or undefined
- // -- r3 : new target
- // -- cp : context
- // -- lr : return address
- // -- sp[...]: constructor arguments
- // -----------------------------------
-
- Isolate* isolate = masm->isolate();
-
- // Enter a construct frame.
- {
- FrameAndConstantPoolScope scope(masm, StackFrame::CONSTRUCT);
-
- // Preserve the incoming parameters on the stack.
- __ AssertUndefinedOrAllocationSite(r2, r4);
- __ Push(cp);
- __ SmiTag(r0);
- __ Push(r2, r0);
-
- if (create_implicit_receiver) {
- // Allocate the new receiver object.
- __ Push(r1, r3);
- FastNewObjectStub stub(masm->isolate());
- __ CallStub(&stub);
- __ mov(r4, r0);
- __ Pop(r1, r3);
-
- // ----------- S t a t e -------------
- // -- r1: constructor function
- // -- r3: new target
- // -- r4: newly allocated object
- // -----------------------------------
-
- // Retrieve smi-tagged arguments count from the stack.
- __ ldr(r0, MemOperand(sp));
- }
-
- __ SmiUntag(r0);
-
- 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(r4);
- __ push(r4);
- } else {
- __ PushRoot(Heap::kTheHoleValueRootIndex);
- }
-
- // Set up pointer to last argument.
- __ add(r2, fp, Operand(StandardFrameConstants::kCallerSPOffset));
-
- // Copy arguments and receiver to the expression stack.
- // r0: number of arguments
- // r1: constructor function
- // r2: address of last argument (caller sp)
- // r3: new target
- // r4: number of arguments (smi-tagged)
- // sp[0]: receiver
- // sp[1]: receiver
- // sp[2]: number of arguments (smi-tagged)
- Label loop, entry;
- __ SmiTag(r4, r0);
- __ b(&entry);
- __ bind(&loop);
- __ ldr(ip, MemOperand(r2, r4, LSL, kPointerSizeLog2 - 1));
- __ push(ip);
- __ bind(&entry);
- __ sub(r4, r4, Operand(2), SetCC);
- __ b(ge, &loop);
-
- // Call the function.
- // r0: number of arguments
- // r1: constructor function
- // r3: new target
- ParameterCount actual(r0);
- __ InvokeFunction(r1, r3, actual, CALL_FUNCTION,
- CheckDebugStepCallWrapper());
-
- // Store offset of return address for deoptimizer.
- if (create_implicit_receiver && !is_api_function) {
- masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset());
- }
-
- // Restore context from the frame.
- // r0: result
- // sp[0]: receiver
- // sp[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.
- // r0: result
- // sp[0]: receiver
- // sp[1]: number of arguments (smi-tagged)
- __ JumpIfSmi(r0, &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.
- __ CompareObjectType(r0, r1, r3, FIRST_JS_RECEIVER_TYPE);
- __ b(ge, &exit);
-
- // Throw away the result of the constructor invocation and use the
- // on-stack receiver as the result.
- __ bind(&use_receiver);
- __ ldr(r0, MemOperand(sp));
-
- // Remove receiver from the stack, remove caller arguments, and
- // return.
- __ bind(&exit);
- // r0: result
- // sp[0]: receiver (newly allocated object)
- // sp[1]: number of arguments (smi-tagged)
- __ ldr(r1, MemOperand(sp, 1 * kPointerSize));
- } else {
- __ ldr(r1, MemOperand(sp));
- }
-
- // 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(r0, &dont_throw);
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ CallRuntime(Runtime::kThrowDerivedConstructorReturnedNonObject);
- }
- __ bind(&dont_throw);
- }
-
- __ add(sp, sp, Operand(r1, LSL, kPointerSizeLog2 - 1));
- __ add(sp, sp, Operand(kPointerSize));
- if (create_implicit_receiver) {
- __ IncrementCounter(isolate->counters()->constructed_objects(), 1, r1, r2);
- }
- __ Jump(lr);
-}
-
-
-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);
-}
-
-// static
-void Builtins::Generate_ResumeGeneratorTrampoline(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : the value to pass to the generator
- // -- r1 : the JSGeneratorObject to resume
- // -- r2 : the resume mode (tagged)
- // -- lr : return address
- // -----------------------------------
- __ AssertGeneratorObject(r1);
-
- // Store input value into generator object.
- __ str(r0, FieldMemOperand(r1, JSGeneratorObject::kInputOrDebugPosOffset));
- __ RecordWriteField(r1, JSGeneratorObject::kInputOrDebugPosOffset, r0, r3,
- kLRHasNotBeenSaved, kDontSaveFPRegs);
-
- // Store resume mode into generator object.
- __ str(r2, FieldMemOperand(r1, JSGeneratorObject::kResumeModeOffset));
-
- // Load suspended function and context.
- __ ldr(cp, FieldMemOperand(r1, JSGeneratorObject::kContextOffset));
- __ ldr(r4, FieldMemOperand(r1, 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(ip, Operand(last_step_action));
- __ ldrsb(ip, MemOperand(ip));
- __ cmp(ip, Operand(StepIn));
- __ b(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(ip, Operand(debug_suspended_generator));
- __ ldr(ip, MemOperand(ip));
- __ cmp(ip, Operand(r1));
- __ b(eq, &prepare_step_in_suspended_generator);
- __ bind(&stepping_prepared);
-
- // Push receiver.
- __ ldr(ip, FieldMemOperand(r1, JSGeneratorObject::kReceiverOffset));
- __ Push(ip);
-
- // ----------- S t a t e -------------
- // -- r1 : the JSGeneratorObject to resume
- // -- r2 : the resume mode (tagged)
- // -- r4 : generator function
- // -- cp : generator context
- // -- lr : return address
- // -- sp[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(r3, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset));
- __ ldr(r3,
- FieldMemOperand(r3, SharedFunctionInfo::kFormalParameterCountOffset));
- {
- Label done_loop, loop;
- __ bind(&loop);
- __ sub(r3, r3, Operand(Smi::FromInt(1)), SetCC);
- __ b(mi, &done_loop);
- __ PushRoot(Heap::kTheHoleValueRootIndex);
- __ b(&loop);
- __ bind(&done_loop);
- }
-
- // Dispatch on the kind of generator object.
- Label old_generator;
- __ ldr(r3, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset));
- __ ldr(r3, FieldMemOperand(r3, SharedFunctionInfo::kFunctionDataOffset));
- __ CompareObjectType(r3, r3, r3, BYTECODE_ARRAY_TYPE);
- __ b(ne, &old_generator);
-
- // New-style (ignition/turbofan) generator object
- {
- __ ldr(r0, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset));
- __ ldr(r0,
- FieldMemOperand(r0, SharedFunctionInfo::kFormalParameterCountOffset));
- __ SmiUntag(r0);
- // 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(r3, r1);
- __ Move(r1, r4);
- __ ldr(r5, FieldMemOperand(r1, JSFunction::kCodeEntryOffset));
- __ Jump(r5);
- }
-
- // 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.
- DCHECK(!FLAG_enable_embedded_constant_pool);
- FrameScope scope(masm, StackFrame::MANUAL);
- __ Push(lr, fp);
- __ Move(fp, sp);
- __ Push(cp, r4);
-
- // Restore the operand stack.
- __ ldr(r0, FieldMemOperand(r1, JSGeneratorObject::kOperandStackOffset));
- __ ldr(r3, FieldMemOperand(r0, FixedArray::kLengthOffset));
- __ add(r0, r0, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
- __ add(r3, r0, Operand(r3, LSL, kPointerSizeLog2 - 1));
- {
- Label done_loop, loop;
- __ bind(&loop);
- __ cmp(r0, r3);
- __ b(eq, &done_loop);
- __ ldr(ip, MemOperand(r0, kPointerSize, PostIndex));
- __ Push(ip);
- __ b(&loop);
- __ bind(&done_loop);
- }
-
- // Reset operand stack so we don't leak.
- __ LoadRoot(ip, Heap::kEmptyFixedArrayRootIndex);
- __ str(ip, FieldMemOperand(r1, JSGeneratorObject::kOperandStackOffset));
-
- // Resume the generator function at the continuation.
- __ ldr(r3, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset));
- __ ldr(r3, FieldMemOperand(r3, SharedFunctionInfo::kCodeOffset));
- __ add(r3, r3, Operand(Code::kHeaderSize - kHeapObjectTag));
- __ ldr(r2, FieldMemOperand(r1, JSGeneratorObject::kContinuationOffset));
- __ add(r3, r3, Operand(r2, ASR, 1));
- __ mov(r2, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorExecuting)));
- __ str(r2, FieldMemOperand(r1, JSGeneratorObject::kContinuationOffset));
- __ Move(r0, r1); // Continuation expects generator object in r0.
- __ Jump(r3);
- }
-
- __ bind(&prepare_step_in_if_stepping);
- {
- FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
- __ Push(r1, r2, r4);
- __ CallRuntime(Runtime::kDebugPrepareStepInIfStepping);
- __ Pop(r1, r2);
- __ ldr(r4, FieldMemOperand(r1, JSGeneratorObject::kFunctionOffset));
- }
- __ b(&stepping_prepared);
-
- __ bind(&prepare_step_in_suspended_generator);
- {
- FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
- __ Push(r1, r2);
- __ CallRuntime(Runtime::kDebugPrepareStepInSuspendedGenerator);
- __ Pop(r1, r2);
- __ ldr(r4, FieldMemOperand(r1, JSGeneratorObject::kFunctionOffset));
- }
- __ b(&stepping_prepared);
-}
-
-void Builtins::Generate_ConstructedNonConstructable(MacroAssembler* masm) {
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ push(r1);
- __ CallRuntime(Runtime::kThrowConstructedNonConstructable);
-}
-
-
-enum IsTagged { kArgcIsSmiTagged, kArgcIsUntaggedInt };
-
-
-// Clobbers r2; preserves all other registers.
-static void Generate_CheckStackOverflow(MacroAssembler* masm, Register argc,
- IsTagged argc_is_tagged) {
- // Check the stack for overflow. We are not trying to catch
- // interruptions (e.g. debug break and preemption) here, so the "real stack
- // limit" is checked.
- Label okay;
- __ LoadRoot(r2, Heap::kRealStackLimitRootIndex);
- // Make r2 the space we have left. The stack might already be overflowed
- // here which will cause r2 to become negative.
- __ sub(r2, sp, r2);
- // Check if the arguments will overflow the stack.
- if (argc_is_tagged == kArgcIsSmiTagged) {
- __ cmp(r2, Operand::PointerOffsetFromSmiKey(argc));
- } else {
- DCHECK(argc_is_tagged == kArgcIsUntaggedInt);
- __ cmp(r2, Operand(argc, LSL, kPointerSizeLog2));
- }
- __ b(gt, &okay); // Signed comparison.
-
- // Out of stack space.
- __ CallRuntime(Runtime::kThrowStackOverflow);
-
- __ bind(&okay);
-}
-
-
-static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm,
- bool is_construct) {
- // Called from Generate_JS_Entry
- // r0: new.target
- // r1: function
- // r2: receiver
- // r3: argc
- // r4: argv
- // r5-r6, r8 (if !FLAG_enable_embedded_constant_pool) and cp may be clobbered
- 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).
- ExternalReference context_address(Isolate::kContextAddress,
- masm->isolate());
- __ mov(cp, Operand(context_address));
- __ ldr(cp, MemOperand(cp));
-
- __ InitializeRootRegister();
-
- // Push the function and the receiver onto the stack.
- __ Push(r1, r2);
-
- // Check if we have enough stack space to push all arguments.
- // Clobbers r2.
- Generate_CheckStackOverflow(masm, r3, kArgcIsUntaggedInt);
-
- // Remember new.target.
- __ mov(r5, r0);
-
- // Copy arguments to the stack in a loop.
- // r1: function
- // r3: argc
- // r4: argv, i.e. points to first arg
- Label loop, entry;
- __ add(r2, r4, Operand(r3, LSL, kPointerSizeLog2));
- // r2 points past last arg.
- __ b(&entry);
- __ bind(&loop);
- __ ldr(r0, MemOperand(r4, kPointerSize, PostIndex)); // read next parameter
- __ ldr(r0, MemOperand(r0)); // dereference handle
- __ push(r0); // push parameter
- __ bind(&entry);
- __ cmp(r4, r2);
- __ b(ne, &loop);
-
- // Setup new.target and argc.
- __ mov(r0, Operand(r3));
- __ mov(r3, Operand(r5));
-
- // Initialize all JavaScript callee-saved registers, since they will be seen
- // by the garbage collector as part of handlers.
- __ LoadRoot(r4, Heap::kUndefinedValueRootIndex);
- __ mov(r5, Operand(r4));
- __ mov(r6, Operand(r4));
- if (!FLAG_enable_embedded_constant_pool) {
- __ mov(r8, Operand(r4));
- }
- if (kR9Available == 1) {
- __ mov(r9, Operand(r4));
- }
-
- // Invoke the code.
- Handle<Code> builtin = is_construct
- ? masm->isolate()->builtins()->Construct()
- : masm->isolate()->builtins()->Call();
- __ Call(builtin, RelocInfo::CODE_TARGET);
-
- // Exit the JS frame and remove the parameters (except function), and
- // return.
- // Respect ABI stack constraint.
- }
- __ Jump(lr);
-
- // r0: result
-}
-
-
-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,
- FieldMemOperand(args_count, BytecodeArray::kParameterSizeOffset));
-
- // Leave the frame (also dropping the register file).
- __ LeaveFrame(StackFrame::JAVA_SCRIPT);
-
- // Drop receiver + arguments.
- __ add(sp, sp, args_count, LeaveCC);
-}
-
-// Generate code for entering a JS function with the interpreter.
-// On entry to the function the receiver and arguments have been pushed on the
-// stack left to right. The actual argument count matches the formal parameter
-// count expected by the function.
-//
-// The live registers are:
-// o r1: the JS function object being called.
-// o r3: the new target
-// o cp: our context
-// o pp: the caller's constant pool pointer (if enabled)
-// o fp: the caller's frame pointer
-// o sp: stack pointer
-// o 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);
- __ PushStandardFrame(r1);
-
- // Get the bytecode array from the function object (or from the DebugInfo if
- // it is present) and load it into kInterpreterBytecodeArrayRegister.
- __ ldr(r0, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
- Register debug_info = kInterpreterBytecodeArrayRegister;
- DCHECK(!debug_info.is(r0));
- __ ldr(debug_info, FieldMemOperand(r0, SharedFunctionInfo::kDebugInfoOffset));
- __ cmp(debug_info, Operand(DebugInfo::uninitialized()));
- // Load original bytecode array or the debug copy.
- __ ldr(kInterpreterBytecodeArrayRegister,
- FieldMemOperand(r0, SharedFunctionInfo::kFunctionDataOffset), eq);
- __ ldr(kInterpreterBytecodeArrayRegister,
- FieldMemOperand(debug_info, DebugInfo::kAbstractCodeIndex), ne);
-
- // 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) {
- __ SmiTst(kInterpreterBytecodeArrayRegister);
- __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
- __ CompareObjectType(kInterpreterBytecodeArrayRegister, r0, no_reg,
- 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(r0, kInterpreterBytecodeOffsetRegister);
- __ Push(r3, kInterpreterBytecodeArrayRegister, r0);
-
- // Allocate the local and temporary register file on the stack.
- {
- // Load frame size from the BytecodeArray object.
- __ ldr(r4, FieldMemOperand(kInterpreterBytecodeArrayRegister,
- BytecodeArray::kFrameSizeOffset));
-
- // Do a stack check to ensure we don't go over the limit.
- Label ok;
- __ sub(r9, sp, Operand(r4));
- __ LoadRoot(r2, Heap::kRealStackLimitRootIndex);
- __ cmp(r9, Operand(r2));
- __ b(hs, &ok);
- __ CallRuntime(Runtime::kThrowStackOverflow);
- __ bind(&ok);
-
- // If ok, push undefined as the initial value for all register file entries.
- Label loop_header;
- Label loop_check;
- __ LoadRoot(r9, Heap::kUndefinedValueRootIndex);
- __ b(&loop_check, al);
- __ bind(&loop_header);
- // TODO(rmcilroy): Consider doing more than one push per loop iteration.
- __ push(r9);
- // Continue loop if not done.
- __ bind(&loop_check);
- __ sub(r4, r4, Operand(kPointerSize), SetCC);
- __ b(&loop_header, ge);
- }
-
- // 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(r1, MemOperand(kInterpreterBytecodeArrayRegister,
- kInterpreterBytecodeOffsetRegister));
- __ ldr(ip, MemOperand(kInterpreterDispatchTableRegister, r1, LSL,
- kPointerSizeLog2));
- __ Call(ip);
- masm->isolate()->heap()->SetInterpreterEntryReturnPCOffset(masm->pc_offset());
-
- // The return value is in r0.
- LeaveInterpreterFrame(masm, r2);
- __ Jump(lr);
-
- // 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(r4, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
- __ ldr(r4, FieldMemOperand(r4, SharedFunctionInfo::kCodeOffset));
- __ add(r4, r4, Operand(Code::kHeaderSize - kHeapObjectTag));
- __ str(r4, FieldMemOperand(r1, JSFunction::kCodeEntryOffset));
- __ RecordWriteCodeEntryField(r1, r4, r5);
- __ Jump(r4);
-}
-
-void Builtins::Generate_InterpreterMarkBaselineOnReturn(MacroAssembler* masm) {
- // Save the function and context for call to CompileBaseline.
- __ ldr(r1, 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, r2);
-
- {
- FrameScope frame_scope(masm, StackFrame::INTERNAL);
- // Push return value.
- __ push(r0);
-
- // Push function as argument and compile for baseline.
- __ push(r1);
- __ CallRuntime(Runtime::kCompileBaseline);
-
- // Restore return value.
- __ pop(r0);
- }
- __ Jump(lr);
-}
-
-static void Generate_InterpreterPushArgs(MacroAssembler* masm, Register index,
- Register limit, Register scratch) {
- Label loop_header, loop_check;
- __ b(al, &loop_check);
- __ bind(&loop_header);
- __ ldr(scratch, MemOperand(index, -kPointerSize, PostIndex));
- __ push(scratch);
- __ bind(&loop_check);
- __ cmp(index, limit);
- __ b(gt, &loop_header);
-}
-
-// static
-void Builtins::Generate_InterpreterPushArgsAndCallImpl(
- MacroAssembler* masm, TailCallMode tail_call_mode,
- CallableType function_type) {
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r2 : 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.
- // -- r1 : the target to call (can be any Object).
- // -----------------------------------
-
- // Find the address of the last argument.
- __ add(r3, r0, Operand(1)); // Add one for receiver.
- __ mov(r3, Operand(r3, LSL, kPointerSizeLog2));
- __ sub(r3, r2, r3);
-
- // Push the arguments.
- Generate_InterpreterPushArgs(masm, r2, r3, r4);
-
- // 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 -------------
- // -- r0 : argument count (not including receiver)
- // -- r3 : new target
- // -- r1 : constructor to call
- // -- r2 : address of the first argument
- // -----------------------------------
-
- // Find the address of the last argument.
- __ mov(r4, Operand(r0, LSL, kPointerSizeLog2));
- __ sub(r4, r2, r4);
-
- // Push a slot for the receiver to be constructed.
- __ mov(ip, Operand::Zero());
- __ push(ip);
-
- // Push the arguments.
- Generate_InterpreterPushArgs(masm, r2, r4, r5);
-
- // Call the constructor with r0, r1, and r3 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));
- __ Move(r2, masm->isolate()->builtins()->InterpreterEntryTrampoline());
- __ add(lr, r2, 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.
- __ SmiTst(kInterpreterBytecodeArrayRegister);
- __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
- __ CompareObjectType(kInterpreterBytecodeArrayRegister, r1, no_reg,
- 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(r1, MemOperand(kInterpreterBytecodeArrayRegister,
- kInterpreterBytecodeOffsetRegister));
- __ ldr(ip, MemOperand(kInterpreterDispatchTableRegister, r1, LSL,
- kPointerSizeLog2));
- __ mov(pc, ip);
-}
-
-void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : argument count (preserved for callee)
- // -- r3 : new target (preserved for callee)
- // -- r1 : target function (preserved for callee)
- // -----------------------------------
- // First lookup code, maybe we don't need to compile!
- Label gotta_call_runtime, gotta_call_runtime_no_stack;
- Label maybe_call_runtime;
- Label try_shared;
- Label loop_top, loop_bottom;
-
- Register argument_count = r0;
- Register closure = r1;
- Register new_target = r3;
- __ push(argument_count);
- __ push(new_target);
- __ push(closure);
-
- Register map = argument_count;
- Register index = r2;
- __ ldr(map, FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
- __ ldr(map,
- FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
- __ ldr(index, FieldMemOperand(map, FixedArray::kLengthOffset));
- __ cmp(index, Operand(Smi::FromInt(2)));
- __ b(lt, &gotta_call_runtime);
-
- // Find literals.
- // r3 : native context
- // r2 : length / index
- // r0 : optimized code map
- // stack[0] : new target
- // stack[4] : closure
- Register native_context = r3;
- __ ldr(native_context, NativeContextMemOperand());
-
- __ bind(&loop_top);
- Register temp = r1;
- Register array_pointer = r5;
-
- // Does the native context match?
- __ add(array_pointer, map, Operand::PointerOffsetFromSmiKey(index));
- __ 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;
- __ 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(r4, FieldMemOperand(temp, WeakCell::kValueOffset));
- __ JumpIfSmi(r4, &maybe_cleared_weakcell);
- // r4 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(r4, Operand(Smi::FromInt(0)));
- __ b(eq, &gotta_call_runtime);
-
- // Save the literals in the closure.
- __ bind(&got_literals);
- __ ldr(r4, MemOperand(sp, 0));
- __ str(temp, FieldMemOperand(r4, JSFunction::kLiteralsOffset));
- __ push(index);
- __ RecordWriteField(r4, JSFunction::kLiteralsOffset, temp, index,
- kLRHasNotBeenSaved, kDontSaveFPRegs, EMIT_REMEMBERED_SET,
- OMIT_SMI_CHECK);
- __ pop(index);
-
- // Code available?
- Register entry = r4;
- __ 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.
- __ pop(closure);
- // Store code entry in the closure.
- __ 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, r5);
-
- // Link the closure into the optimized function list.
- // r4 : code entry
- // r3 : native context
- // r1 : closure
- __ ldr(r5,
- ContextMemOperand(native_context, Context::OPTIMIZED_FUNCTIONS_LIST));
- __ str(r5, FieldMemOperand(closure, JSFunction::kNextFunctionLinkOffset));
- __ RecordWriteField(closure, JSFunction::kNextFunctionLinkOffset, r5, r0,
- 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));
- // Save closure before the write barrier.
- __ mov(r5, closure);
- __ RecordWriteContextSlot(native_context, function_list_offset, closure, r0,
- kLRHasNotBeenSaved, kDontSaveFPRegs);
- __ mov(closure, r5);
- __ pop(new_target);
- __ pop(argument_count);
- __ Jump(entry);
-
- __ bind(&loop_bottom);
- __ sub(index, index, Operand(Smi::FromInt(SharedFunctionInfo::kEntryLength)));
- __ cmp(index, Operand(Smi::FromInt(1)));
- __ b(gt, &loop_top);
-
- // We found neither literals nor code.
- __ jmp(&gotta_call_runtime);
-
- __ bind(&maybe_call_runtime);
- __ pop(closure);
-
- // Last possibility. Check the context free optimized code map entry.
- __ 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));
- __ jmp(&install_optimized_code_and_tailcall);
-
- __ bind(&try_shared);
- __ pop(new_target);
- __ pop(argument_count);
- // Is the full code valid?
- __ ldr(entry,
- FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
- __ ldr(entry, FieldMemOperand(entry, SharedFunctionInfo::kCodeOffset));
- __ ldr(r5, FieldMemOperand(entry, Code::kFlagsOffset));
- __ and_(r5, r5, Operand(Code::KindField::kMask));
- __ mov(r5, Operand(r5, LSR, Code::KindField::kShift));
- __ cmp(r5, Operand(Code::BUILTIN));
- __ b(eq, &gotta_call_runtime_no_stack);
- // Yes, install the full code.
- __ add(entry, entry, Operand(Code::kHeaderSize - kHeapObjectTag));
- __ str(entry, FieldMemOperand(closure, JSFunction::kCodeEntryOffset));
- __ RecordWriteCodeEntryField(closure, entry, r5);
- __ Jump(entry);
-
- __ bind(&gotta_call_runtime);
- __ pop(closure);
- __ pop(new_target);
- __ pop(argument_count);
- __ bind(&gotta_call_runtime_no_stack);
- GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy);
-}
-
-void Builtins::Generate_CompileBaseline(MacroAssembler* masm) {
- GenerateTailCallToReturnedCode(masm, Runtime::kCompileBaseline);
-}
-
-void Builtins::Generate_CompileOptimized(MacroAssembler* masm) {
- GenerateTailCallToReturnedCode(masm,
- Runtime::kCompileOptimized_NotConcurrent);
-}
-
-
-void Builtins::Generate_CompileOptimizedConcurrent(MacroAssembler* masm) {
- GenerateTailCallToReturnedCode(masm, Runtime::kCompileOptimized_Concurrent);
-}
-
-void Builtins::Generate_InstantiateAsmJs(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : argument count (preserved for callee)
- // -- r1 : new target (preserved for callee)
- // -- r3 : target function (preserved for callee)
- // -----------------------------------
- Label failed;
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
- // Push the number of arguments to the callee.
- __ SmiTag(r0);
- __ push(r0);
- // Push a copy of the target function and the new target.
- __ push(r1);
- __ push(r3);
-
- // The function.
- __ push(r1);
- // Copy arguments from caller (stdlib, foreign, heap).
- for (int i = 2; i >= 0; --i) {
- __ ldr(r4, MemOperand(fp, StandardFrameConstants::kCallerSPOffset +
- i * kPointerSize));
- __ push(r4);
- }
- // 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(r0, &failed);
- scope.GenerateLeaveFrame();
- __ Drop(4);
- __ Ret();
-
- __ bind(&failed);
- // Restore target function and new target.
- __ pop(r3);
- __ pop(r1);
- __ pop(r0);
- __ SmiUntag(r0);
- }
- // On failure, tail call back to regular js.
- GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy);
-}
-
-static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) {
- // For now, we are relying on the fact that make_code_young doesn't do any
- // garbage collection which allows us to save/restore the registers without
- // worrying about which of them contain pointers. We also don't build an
- // internal frame to make the code faster, since we shouldn't have to do stack
- // crawls in MakeCodeYoung. This seems a bit fragile.
-
- // The following registers must be saved and restored when calling through to
- // the runtime:
- // r0 - contains return address (beginning of patch sequence)
- // r1 - isolate
- // r3 - new target
- FrameScope scope(masm, StackFrame::MANUAL);
- __ stm(db_w, sp, r0.bit() | r1.bit() | r3.bit() | fp.bit() | lr.bit());
- __ PrepareCallCFunction(2, 0, r2);
- __ mov(r1, Operand(ExternalReference::isolate_address(masm->isolate())));
- __ CallCFunction(
- ExternalReference::get_make_code_young_function(masm->isolate()), 2);
- __ ldm(ia_w, sp, r0.bit() | r1.bit() | r3.bit() | fp.bit() | lr.bit());
- __ mov(pc, r0);
-}
-
-#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 registers must be saved and restored when calling through to
- // the runtime:
- // r0 - contains return address (beginning of patch sequence)
- // r1 - isolate
- // r3 - new target
- FrameScope scope(masm, StackFrame::MANUAL);
- __ stm(db_w, sp, r0.bit() | r1.bit() | r3.bit() | fp.bit() | lr.bit());
- __ PrepareCallCFunction(2, 0, r2);
- __ mov(r1, Operand(ExternalReference::isolate_address(masm->isolate())));
- __ CallCFunction(ExternalReference::get_mark_code_as_executed_function(
- masm->isolate()), 2);
- __ ldm(ia_w, sp, r0.bit() | r1.bit() | r3.bit() | fp.bit() | lr.bit());
-
- // Perform prologue operations usually performed by the young code stub.
- __ PushStandardFrame(r1);
-
- // Jump to point after the code-age stub.
- __ add(r0, r0, Operand(kNoCodeAgeSequenceLength));
- __ mov(pc, r0);
-}
-
-
-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) {
- {
- FrameAndConstantPoolScope 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.
- __ stm(db_w, sp, kJSCallerSaved | kCalleeSaved);
- // Pass the function and deoptimization type to the runtime system.
- __ CallRuntime(Runtime::kNotifyStubFailure, save_doubles);
- __ ldm(ia_w, sp, kJSCallerSaved | kCalleeSaved);
- }
-
- __ add(sp, sp, Operand(kPointerSize)); // Ignore state
- __ mov(pc, lr); // Jump to miss handler
-}
-
-
-void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) {
- Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs);
-}
-
-
-void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) {
- Generate_NotifyStubFailureHelper(masm, kSaveFPRegs);
-}
-
-
-static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm,
- Deoptimizer::BailoutType type) {
- {
- FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
- // Pass the function and deoptimization type to the runtime system.
- __ mov(r0, Operand(Smi::FromInt(static_cast<int>(type))));
- __ push(r0);
- __ CallRuntime(Runtime::kNotifyDeoptimized);
- }
-
- // Get the full codegen state from the stack and untag it -> r6.
- __ ldr(r6, MemOperand(sp, 0 * kPointerSize));
- __ SmiUntag(r6);
- // Switch on the state.
- Label with_tos_register, unknown_state;
- __ cmp(r6,
- Operand(static_cast<int>(Deoptimizer::BailoutState::NO_REGISTERS)));
- __ b(ne, &with_tos_register);
- __ add(sp, sp, Operand(1 * kPointerSize)); // Remove state.
- __ Ret();
-
- __ bind(&with_tos_register);
- DCHECK_EQ(kInterpreterAccumulatorRegister.code(), r0.code());
- __ ldr(r0, MemOperand(sp, 1 * kPointerSize));
- __ cmp(r6,
- Operand(static_cast<int>(Deoptimizer::BailoutState::TOS_REGISTER)));
- __ b(ne, &unknown_state);
- __ add(sp, sp, Operand(2 * kPointerSize)); // Remove state.
- __ Ret();
-
- __ bind(&unknown_state);
- __ stop("no cases left");
-}
-
-
-void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) {
- Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER);
-}
-
-
-void Builtins::Generate_NotifySoftDeoptimized(MacroAssembler* masm) {
- Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::SOFT);
-}
-
-
-void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) {
- Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY);
-}
-
-
-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, ip, ip);
- __ cmp(ip, 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, ip, ip, FUNCTION_TEMPLATE_INFO_TYPE);
-
- // Otherwise load the parent function template and iterate.
- __ ldr(type,
- FieldMemOperand(type, FunctionTemplateInfo::kParentTemplateOffset),
- eq);
- __ b(&function_template_loop, eq);
-
- // Load the next prototype.
- __ bind(&next_prototype);
- __ ldr(ip, FieldMemOperand(map, Map::kBitField3Offset));
- __ tst(ip, 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 -------------
- // -- r0 : number of arguments excluding receiver
- // -- r1 : callee
- // -- lr : return address
- // -- sp[0] : last argument
- // -- ...
- // -- sp[4 * (argc - 1)] : first argument
- // -- sp[4 * argc] : receiver
- // -----------------------------------
-
- // Load the FunctionTemplateInfo.
- __ ldr(r3, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
- __ ldr(r3, FieldMemOperand(r3, SharedFunctionInfo::kFunctionDataOffset));
-
- // Do the compatible receiver check.
- Label receiver_check_failed;
- __ ldr(r2, MemOperand(sp, r0, LSL, kPointerSizeLog2));
- CompatibleReceiverCheck(masm, r2, r3, r4, r5, r6, &receiver_check_failed);
-
- // Get the callback offset from the FunctionTemplateInfo, and jump to the
- // beginning of the code.
- __ ldr(r4, FieldMemOperand(r3, FunctionTemplateInfo::kCallCodeOffset));
- __ ldr(r4, FieldMemOperand(r4, CallHandlerInfo::kFastHandlerOffset));
- __ add(r4, r4, Operand(Code::kHeaderSize - kHeapObjectTag));
- __ Jump(r4);
-
- // Compatible receiver check failed: throw an Illegal Invocation exception.
- __ bind(&receiver_check_failed);
- // Drop the arguments (including the receiver)
- __ add(r0, r0, Operand(1));
- __ add(sp, sp, Operand(r0, LSL, kPointerSizeLog2));
- __ TailCallRuntime(Runtime::kThrowIllegalInvocation);
-}
-
-
-void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) {
- // Lookup the function in the JavaScript frame.
- __ ldr(r0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
- {
- FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
- // Pass function as argument.
- __ push(r0);
- __ CallRuntime(Runtime::kCompileForOnStackReplacement);
- }
-
- // If the code object is null, just return to the unoptimized code.
- Label skip;
- __ cmp(r0, Operand(Smi::FromInt(0)));
- __ b(ne, &skip);
- __ Ret();
-
- __ bind(&skip);
-
- // Load deoptimization data from the code object.
- // <deopt_data> = <code>[#deoptimization_data_offset]
- __ ldr(r1, FieldMemOperand(r0, Code::kDeoptimizationDataOffset));
-
- { ConstantPoolUnavailableScope constant_pool_unavailable(masm);
- __ add(r0, r0, Operand(Code::kHeaderSize - kHeapObjectTag)); // Code start
-
- if (FLAG_enable_embedded_constant_pool) {
- __ LoadConstantPoolPointerRegisterFromCodeTargetAddress(r0);
- }
-
- // Load the OSR entrypoint offset from the deoptimization data.
- // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset]
- __ ldr(r1, FieldMemOperand(r1, FixedArray::OffsetOfElementAt(
- DeoptimizationInputData::kOsrPcOffsetIndex)));
-
- // Compute the target address = code start + osr_offset
- __ add(lr, r0, Operand::SmiUntag(r1));
-
- // 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 -------------
- // -- r0 : number of arguments
- // -- r1 : function
- // -- cp : context
- // -- lr : return address
- // -- sp[0] : receiver
- // -----------------------------------
-
- // 1. Pop receiver into r0 and check that it's actually a JSDate object.
- Label receiver_not_date;
- {
- __ Pop(r0);
- __ JumpIfSmi(r0, &receiver_not_date);
- __ CompareObjectType(r0, r2, r3, JS_DATE_TYPE);
- __ b(ne, &receiver_not_date);
- }
-
- // 2. Load the specified date field, falling back to the runtime as necessary.
- if (field_index == JSDate::kDateValue) {
- __ ldr(r0, FieldMemOperand(r0, JSDate::kValueOffset));
- } else {
- if (field_index < JSDate::kFirstUncachedField) {
- Label stamp_mismatch;
- __ mov(r1, Operand(ExternalReference::date_cache_stamp(masm->isolate())));
- __ ldr(r1, MemOperand(r1));
- __ ldr(ip, FieldMemOperand(r0, JSDate::kCacheStampOffset));
- __ cmp(r1, ip);
- __ b(ne, &stamp_mismatch);
- __ ldr(r0, FieldMemOperand(
- r0, JSDate::kValueOffset + field_index * kPointerSize));
- __ Ret();
- __ bind(&stamp_mismatch);
- }
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ PrepareCallCFunction(2, r1);
- __ mov(r1, Operand(Smi::FromInt(field_index)));
- __ CallCFunction(
- ExternalReference::get_date_field_function(masm->isolate()), 2);
- }
- __ Ret();
-
- // 3. Raise a TypeError if the receiver is not a date.
- __ bind(&receiver_not_date);
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- __ Push(r0);
- __ Move(r0, Smi::FromInt(0));
- __ EnterBuiltinFrame(cp, r1, r0);
- __ CallRuntime(Runtime::kThrowNotDateError);
- }
-}
-
-// static
-void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : argc
- // -- sp[0] : argArray
- // -- sp[4] : thisArg
- // -- sp[8] : receiver
- // -----------------------------------
-
- // 1. Load receiver into r1, argArray into r0 (if present), remove all
- // arguments from the stack (including the receiver), and push thisArg (if
- // present) instead.
- {
- __ LoadRoot(r2, Heap::kUndefinedValueRootIndex);
- __ mov(r3, r2);
- __ ldr(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2)); // receiver
- __ sub(r4, r0, Operand(1), SetCC);
- __ ldr(r2, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // thisArg
- __ sub(r4, r4, Operand(1), SetCC, ge);
- __ ldr(r3, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // argArray
- __ add(sp, sp, Operand(r0, LSL, kPointerSizeLog2));
- __ str(r2, MemOperand(sp, 0));
- __ mov(r0, r3);
- }
-
- // ----------- S t a t e -------------
- // -- r0 : argArray
- // -- r1 : receiver
- // -- sp[0] : thisArg
- // -----------------------------------
-
- // 2. Make sure the receiver is actually callable.
- Label receiver_not_callable;
- __ JumpIfSmi(r1, &receiver_not_callable);
- __ ldr(r4, FieldMemOperand(r1, HeapObject::kMapOffset));
- __ ldrb(r4, FieldMemOperand(r4, Map::kBitFieldOffset));
- __ tst(r4, Operand(1 << Map::kIsCallable));
- __ b(eq, &receiver_not_callable);
-
- // 3. Tail call with no arguments if argArray is null or undefined.
- Label no_arguments;
- __ JumpIfRoot(r0, Heap::kNullValueRootIndex, &no_arguments);
- __ JumpIfRoot(r0, Heap::kUndefinedValueRootIndex, &no_arguments);
-
- // 4a. Apply the receiver to the given argArray (passing undefined for
- // new.target).
- __ LoadRoot(r3, Heap::kUndefinedValueRootIndex);
- __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET);
-
- // 4b. The argArray is either null or undefined, so we tail call without any
- // arguments to the receiver.
- __ bind(&no_arguments);
- {
- __ mov(r0, Operand(0));
- __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
- }
-
- // 4c. The receiver is not callable, throw an appropriate TypeError.
- __ bind(&receiver_not_callable);
- {
- __ str(r1, MemOperand(sp, 0));
- __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
- }
-}
-
-
-// static
-void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) {
- // 1. Make sure we have at least one argument.
- // r0: actual number of arguments
- {
- Label done;
- __ cmp(r0, Operand::Zero());
- __ b(ne, &done);
- __ PushRoot(Heap::kUndefinedValueRootIndex);
- __ add(r0, r0, Operand(1));
- __ bind(&done);
- }
-
- // 2. Get the callable to call (passed as receiver) from the stack.
- // r0: actual number of arguments
- __ ldr(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2));
-
- // 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.
- // r0: actual number of arguments
- // r1: callable
- {
- Label loop;
- // Calculate the copy start address (destination). Copy end address is sp.
- __ add(r2, sp, Operand(r0, LSL, kPointerSizeLog2));
-
- __ bind(&loop);
- __ ldr(ip, MemOperand(r2, -kPointerSize));
- __ str(ip, MemOperand(r2));
- __ sub(r2, r2, Operand(kPointerSize));
- __ cmp(r2, sp);
- __ b(ne, &loop);
- // Adjust the actual number of arguments and remove the top element
- // (which is a copy of the last argument).
- __ sub(r0, r0, Operand(1));
- __ pop();
- }
-
- // 4. Call the callable.
- __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
-}
-
-
-void Builtins::Generate_ReflectApply(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : argc
- // -- sp[0] : argumentsList
- // -- sp[4] : thisArgument
- // -- sp[8] : target
- // -- sp[12] : receiver
- // -----------------------------------
-
- // 1. Load target into r1 (if present), argumentsList into r0 (if present),
- // remove all arguments from the stack (including the receiver), and push
- // thisArgument (if present) instead.
- {
- __ LoadRoot(r1, Heap::kUndefinedValueRootIndex);
- __ mov(r2, r1);
- __ mov(r3, r1);
- __ sub(r4, r0, Operand(1), SetCC);
- __ ldr(r1, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // target
- __ sub(r4, r4, Operand(1), SetCC, ge);
- __ ldr(r2, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // thisArgument
- __ sub(r4, r4, Operand(1), SetCC, ge);
- __ ldr(r3, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // argumentsList
- __ add(sp, sp, Operand(r0, LSL, kPointerSizeLog2));
- __ str(r2, MemOperand(sp, 0));
- __ mov(r0, r3);
- }
-
- // ----------- S t a t e -------------
- // -- r0 : argumentsList
- // -- r1 : target
- // -- sp[0] : thisArgument
- // -----------------------------------
-
- // 2. Make sure the target is actually callable.
- Label target_not_callable;
- __ JumpIfSmi(r1, &target_not_callable);
- __ ldr(r4, FieldMemOperand(r1, HeapObject::kMapOffset));
- __ ldrb(r4, FieldMemOperand(r4, Map::kBitFieldOffset));
- __ tst(r4, Operand(1 << Map::kIsCallable));
- __ b(eq, &target_not_callable);
-
- // 3a. Apply the target to the given argumentsList (passing undefined for
- // new.target).
- __ LoadRoot(r3, Heap::kUndefinedValueRootIndex);
- __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET);
-
- // 3b. The target is not callable, throw an appropriate TypeError.
- __ bind(&target_not_callable);
- {
- __ str(r1, MemOperand(sp, 0));
- __ TailCallRuntime(Runtime::kThrowApplyNonFunction);
- }
-}
-
-
-void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : argc
- // -- sp[0] : new.target (optional)
- // -- sp[4] : argumentsList
- // -- sp[8] : target
- // -- sp[12] : receiver
- // -----------------------------------
-
- // 1. Load target into r1 (if present), argumentsList into r0 (if present),
- // new.target into r3 (if present, otherwise use target), remove all
- // arguments from the stack (including the receiver), and push thisArgument
- // (if present) instead.
- {
- __ LoadRoot(r1, Heap::kUndefinedValueRootIndex);
- __ mov(r2, r1);
- __ str(r2, MemOperand(sp, r0, LSL, kPointerSizeLog2)); // receiver
- __ sub(r4, r0, Operand(1), SetCC);
- __ ldr(r1, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // target
- __ mov(r3, r1); // new.target defaults to target
- __ sub(r4, r4, Operand(1), SetCC, ge);
- __ ldr(r2, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // argumentsList
- __ sub(r4, r4, Operand(1), SetCC, ge);
- __ ldr(r3, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // new.target
- __ add(sp, sp, Operand(r0, LSL, kPointerSizeLog2));
- __ mov(r0, r2);
- }
-
- // ----------- S t a t e -------------
- // -- r0 : argumentsList
- // -- r3 : new.target
- // -- r1 : target
- // -- sp[0] : receiver (undefined)
- // -----------------------------------
-
- // 2. Make sure the target is actually a constructor.
- Label target_not_constructor;
- __ JumpIfSmi(r1, &target_not_constructor);
- __ ldr(r4, FieldMemOperand(r1, HeapObject::kMapOffset));
- __ ldrb(r4, FieldMemOperand(r4, Map::kBitFieldOffset));
- __ tst(r4, Operand(1 << Map::kIsConstructor));
- __ b(eq, &target_not_constructor);
-
- // 3. Make sure the target is actually a constructor.
- Label new_target_not_constructor;
- __ JumpIfSmi(r3, &new_target_not_constructor);
- __ ldr(r4, FieldMemOperand(r3, HeapObject::kMapOffset));
- __ ldrb(r4, FieldMemOperand(r4, Map::kBitFieldOffset));
- __ tst(r4, Operand(1 << Map::kIsConstructor));
- __ b(eq, &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);
- {
- __ str(r1, MemOperand(sp, 0));
- __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
- }
-
- // 4c. The new.target is not a constructor, throw an appropriate TypeError.
- __ bind(&new_target_not_constructor);
- {
- __ str(r3, MemOperand(sp, 0));
- __ TailCallRuntime(Runtime::kThrowCalledNonCallable);
- }
-}
-
-
-static void ArgumentAdaptorStackCheck(MacroAssembler* masm,
- Label* stack_overflow) {
- // ----------- S t a t e -------------
- // -- r0 : actual number of arguments
- // -- r1 : function (passed through to callee)
- // -- r2 : expected number of arguments
- // -- r3 : new target (passed through to callee)
- // -----------------------------------
- // Check the stack for overflow. We are not trying to catch
- // interruptions (e.g. debug break and preemption) here, so the "real stack
- // limit" is checked.
- __ LoadRoot(r5, Heap::kRealStackLimitRootIndex);
- // Make r5 the space we have left. The stack might already be overflowed
- // here which will cause r5 to become negative.
- __ sub(r5, sp, r5);
- // Check if the arguments will overflow the stack.
- __ cmp(r5, Operand(r2, LSL, kPointerSizeLog2));
- __ b(le, stack_overflow); // Signed comparison.
-}
-
-
-static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) {
- __ SmiTag(r0);
- __ mov(r4, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
- __ stm(db_w, sp, r0.bit() | r1.bit() | r4.bit() |
- (FLAG_enable_embedded_constant_pool ? pp.bit() : 0) |
- fp.bit() | lr.bit());
- __ add(fp, sp,
- Operand(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize));
-}
-
-
-static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : result being passed through
- // -----------------------------------
- // Get the number of arguments passed (as a smi), tear down the frame and
- // then tear down the parameters.
- __ ldr(r1, MemOperand(fp, -(StandardFrameConstants::kFixedFrameSizeFromFp +
- kPointerSize)));
-
- __ LeaveFrame(StackFrame::ARGUMENTS_ADAPTOR);
- __ add(sp, sp, Operand::PointerOffsetFromSmiKey(r1));
- __ add(sp, sp, Operand(kPointerSize)); // adjust for receiver
-}
-
-
-// static
-void Builtins::Generate_Apply(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : argumentsList
- // -- r1 : target
- // -- r3 : new.target (checked to be constructor or undefined)
- // -- sp[0] : thisArgument
- // -----------------------------------
-
- // Create the list of arguments from the array-like argumentsList.
- {
- Label create_arguments, create_array, create_runtime, done_create;
- __ JumpIfSmi(r0, &create_runtime);
-
- // Load the map of argumentsList into r2.
- __ ldr(r2, FieldMemOperand(r0, HeapObject::kMapOffset));
-
- // Load native context into r4.
- __ ldr(r4, NativeContextMemOperand());
-
- // Check if argumentsList is an (unmodified) arguments object.
- __ ldr(ip, ContextMemOperand(r4, Context::SLOPPY_ARGUMENTS_MAP_INDEX));
- __ cmp(ip, r2);
- __ b(eq, &create_arguments);
- __ ldr(ip, ContextMemOperand(r4, Context::STRICT_ARGUMENTS_MAP_INDEX));
- __ cmp(ip, r2);
- __ b(eq, &create_arguments);
-
- // Check if argumentsList is a fast JSArray.
- __ CompareInstanceType(r2, ip, JS_ARRAY_TYPE);
- __ b(eq, &create_array);
-
- // Ask the runtime to create the list (actually a FixedArray).
- __ bind(&create_runtime);
- {
- FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
- __ Push(r1, r3, r0);
- __ CallRuntime(Runtime::kCreateListFromArrayLike);
- __ Pop(r1, r3);
- __ ldr(r2, FieldMemOperand(r0, FixedArray::kLengthOffset));
- __ SmiUntag(r2);
- }
- __ jmp(&done_create);
-
- // Try to create the list from an arguments object.
- __ bind(&create_arguments);
- __ ldr(r2, FieldMemOperand(r0, JSArgumentsObject::kLengthOffset));
- __ ldr(r4, FieldMemOperand(r0, JSObject::kElementsOffset));
- __ ldr(ip, FieldMemOperand(r4, FixedArray::kLengthOffset));
- __ cmp(r2, ip);
- __ b(ne, &create_runtime);
- __ SmiUntag(r2);
- __ mov(r0, r4);
- __ b(&done_create);
-
- // Try to create the list from a JSArray object.
- __ bind(&create_array);
- __ ldr(r2, FieldMemOperand(r2, Map::kBitField2Offset));
- __ DecodeField<Map::ElementsKindBits>(r2);
- STATIC_ASSERT(FAST_SMI_ELEMENTS == 0);
- STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1);
- STATIC_ASSERT(FAST_ELEMENTS == 2);
- __ cmp(r2, Operand(FAST_ELEMENTS));
- __ b(hi, &create_runtime);
- __ cmp(r2, Operand(FAST_HOLEY_SMI_ELEMENTS));
- __ b(eq, &create_runtime);
- __ ldr(r2, FieldMemOperand(r0, JSArray::kLengthOffset));
- __ ldr(r0, FieldMemOperand(r0, JSArray::kElementsOffset));
- __ SmiUntag(r2);
-
- __ 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(ip, Heap::kRealStackLimitRootIndex);
- // Make ip the space we have left. The stack might already be overflowed
- // here which will cause ip to become negative.
- __ sub(ip, sp, ip);
- // Check if the arguments will overflow the stack.
- __ cmp(ip, Operand(r2, LSL, kPointerSizeLog2));
- __ b(gt, &done); // Signed comparison.
- __ TailCallRuntime(Runtime::kThrowStackOverflow);
- __ bind(&done);
- }
-
- // ----------- S t a t e -------------
- // -- r1 : target
- // -- r0 : args (a FixedArray built from argumentsList)
- // -- r2 : len (number of elements to push from args)
- // -- r3 : new.target (checked to be constructor or undefined)
- // -- sp[0] : thisArgument
- // -----------------------------------
-
- // Push arguments onto the stack (thisArgument is already on the stack).
- {
- __ mov(r4, Operand(0));
- Label done, loop;
- __ bind(&loop);
- __ cmp(r4, r2);
- __ b(eq, &done);
- __ add(ip, r0, Operand(r4, LSL, kPointerSizeLog2));
- __ ldr(ip, FieldMemOperand(ip, FixedArray::kHeaderSize));
- __ Push(ip);
- __ add(r4, r4, Operand(1));
- __ b(&loop);
- __ bind(&done);
- __ Move(r0, r4);
- }
-
- // Dispatch to Call or Construct depending on whether new.target is undefined.
- {
- __ CompareRoot(r3, 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, ArgumentsAdaptorFrameConstants::kFunctionOffset));
- __ ldr(scratch1,
- FieldMemOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
- __ ldr(caller_args_count_reg,
- FieldMemOperand(scratch1,
- SharedFunctionInfo::kFormalParameterCountOffset));
- __ SmiUntag(caller_args_count_reg);
-
- __ bind(&formal_parameter_count_loaded);
-
- ParameterCount callee_args_count(args_reg);
- __ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
- scratch3);
- __ bind(&done);
-}
-} // namespace
-
-// static
-void Builtins::Generate_CallFunction(MacroAssembler* masm,
- ConvertReceiverMode mode,
- TailCallMode tail_call_mode) {
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r1 : the function to call (checked to be a JSFunction)
- // -----------------------------------
- __ AssertFunction(r1);
-
- // See ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList)
- // Check that the function is not a "classConstructor".
- Label class_constructor;
- __ ldr(r2, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
- __ ldrb(r3, FieldMemOperand(r2, SharedFunctionInfo::kFunctionKindByteOffset));
- __ tst(r3, Operand(SharedFunctionInfo::kClassConstructorBitsWithinByte));
- __ b(ne, &class_constructor);
-
- // Enter the context of the function; ToObject has to run in the function
- // context, and we also need to take the global proxy from the function
- // context in case of conversion.
- STATIC_ASSERT(SharedFunctionInfo::kNativeByteOffset ==
- SharedFunctionInfo::kStrictModeByteOffset);
- __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset));
- // We need to convert the receiver for non-native sloppy mode functions.
- Label done_convert;
- __ ldrb(r3, FieldMemOperand(r2, SharedFunctionInfo::kNativeByteOffset));
- __ tst(r3, Operand((1 << SharedFunctionInfo::kNativeBitWithinByte) |
- (1 << SharedFunctionInfo::kStrictModeBitWithinByte)));
- __ b(ne, &done_convert);
- {
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r1 : the function to call (checked to be a JSFunction)
- // -- r2 : the shared function info.
- // -- cp : the function context.
- // -----------------------------------
-
- if (mode == ConvertReceiverMode::kNullOrUndefined) {
- // Patch receiver to global proxy.
- __ LoadGlobalProxy(r3);
- } else {
- Label convert_to_object, convert_receiver;
- __ ldr(r3, MemOperand(sp, r0, LSL, kPointerSizeLog2));
- __ JumpIfSmi(r3, &convert_to_object);
- STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE);
- __ CompareObjectType(r3, r4, r4, FIRST_JS_RECEIVER_TYPE);
- __ b(hs, &done_convert);
- if (mode != ConvertReceiverMode::kNotNullOrUndefined) {
- Label convert_global_proxy;
- __ JumpIfRoot(r3, Heap::kUndefinedValueRootIndex,
- &convert_global_proxy);
- __ JumpIfNotRoot(r3, Heap::kNullValueRootIndex, &convert_to_object);
- __ bind(&convert_global_proxy);
- {
- // Patch receiver to global proxy.
- __ LoadGlobalProxy(r3);
- }
- __ 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?)
- FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
- __ SmiTag(r0);
- __ Push(r0, r1);
- __ mov(r0, r3);
- ToObjectStub stub(masm->isolate());
- __ CallStub(&stub);
- __ mov(r3, r0);
- __ Pop(r0, r1);
- __ SmiUntag(r0);
- }
- __ ldr(r2, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
- __ bind(&convert_receiver);
- }
- __ str(r3, MemOperand(sp, r0, LSL, kPointerSizeLog2));
- }
- __ bind(&done_convert);
-
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r1 : the function to call (checked to be a JSFunction)
- // -- r2 : the shared function info.
- // -- cp : the function context.
- // -----------------------------------
-
- if (tail_call_mode == TailCallMode::kAllow) {
- PrepareForTailCall(masm, r0, r3, r4, r5);
- }
-
- __ ldr(r2,
- FieldMemOperand(r2, SharedFunctionInfo::kFormalParameterCountOffset));
- __ SmiUntag(r2);
- ParameterCount actual(r0);
- ParameterCount expected(r2);
- __ InvokeFunctionCode(r1, 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(r1);
- __ CallRuntime(Runtime::kThrowConstructorNonCallableError);
- }
-}
-
-
-namespace {
-
-void Generate_PushBoundArguments(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r1 : target (checked to be a JSBoundFunction)
- // -- r3 : new.target (only in case of [[Construct]])
- // -----------------------------------
-
- // Load [[BoundArguments]] into r2 and length of that into r4.
- Label no_bound_arguments;
- __ ldr(r2, FieldMemOperand(r1, JSBoundFunction::kBoundArgumentsOffset));
- __ ldr(r4, FieldMemOperand(r2, FixedArray::kLengthOffset));
- __ SmiUntag(r4);
- __ cmp(r4, Operand(0));
- __ b(eq, &no_bound_arguments);
- {
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r1 : target (checked to be a JSBoundFunction)
- // -- r2 : the [[BoundArguments]] (implemented as FixedArray)
- // -- r3 : new.target (only in case of [[Construct]])
- // -- r4 : the number of [[BoundArguments]]
- // -----------------------------------
-
- // Reserve stack space for the [[BoundArguments]].
- {
- Label done;
- __ sub(sp, sp, Operand(r4, LSL, kPointerSizeLog2));
- // 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(sp, Heap::kRealStackLimitRootIndex);
- __ b(gt, &done); // Signed comparison.
- // Restore the stack pointer.
- __ add(sp, sp, Operand(r4, LSL, kPointerSizeLog2));
- {
- FrameScope scope(masm, StackFrame::MANUAL);
- __ EnterFrame(StackFrame::INTERNAL);
- __ CallRuntime(Runtime::kThrowStackOverflow);
- }
- __ bind(&done);
- }
-
- // Relocate arguments down the stack.
- {
- Label loop, done_loop;
- __ mov(r5, Operand(0));
- __ bind(&loop);
- __ cmp(r5, r0);
- __ b(gt, &done_loop);
- __ ldr(ip, MemOperand(sp, r4, LSL, kPointerSizeLog2));
- __ str(ip, MemOperand(sp, r5, LSL, kPointerSizeLog2));
- __ add(r4, r4, Operand(1));
- __ add(r5, r5, Operand(1));
- __ b(&loop);
- __ bind(&done_loop);
- }
-
- // Copy [[BoundArguments]] to the stack (below the arguments).
- {
- Label loop;
- __ ldr(r4, FieldMemOperand(r2, FixedArray::kLengthOffset));
- __ SmiUntag(r4);
- __ add(r2, r2, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
- __ bind(&loop);
- __ sub(r4, r4, Operand(1), SetCC);
- __ ldr(ip, MemOperand(r2, r4, LSL, kPointerSizeLog2));
- __ str(ip, MemOperand(sp, r0, LSL, kPointerSizeLog2));
- __ add(r0, r0, Operand(1));
- __ b(gt, &loop);
- }
- }
- __ bind(&no_bound_arguments);
-}
-
-} // namespace
-
-
-// static
-void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
- TailCallMode tail_call_mode) {
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r1 : the function to call (checked to be a JSBoundFunction)
- // -----------------------------------
- __ AssertBoundFunction(r1);
-
- if (tail_call_mode == TailCallMode::kAllow) {
- PrepareForTailCall(masm, r0, r3, r4, r5);
- }
-
- // Patch the receiver to [[BoundThis]].
- __ ldr(ip, FieldMemOperand(r1, JSBoundFunction::kBoundThisOffset));
- __ str(ip, MemOperand(sp, r0, LSL, kPointerSizeLog2));
-
- // Push the [[BoundArguments]] onto the stack.
- Generate_PushBoundArguments(masm);
-
- // Call the [[BoundTargetFunction]] via the Call builtin.
- __ ldr(r1, FieldMemOperand(r1, JSBoundFunction::kBoundTargetFunctionOffset));
- __ mov(ip, Operand(ExternalReference(Builtins::kCall_ReceiverIsAny,
- masm->isolate())));
- __ ldr(ip, MemOperand(ip));
- __ add(pc, ip, Operand(Code::kHeaderSize - kHeapObjectTag));
-}
-
-
-// static
-void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
- TailCallMode tail_call_mode) {
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r1 : the target to call (can be any Object).
- // -----------------------------------
-
- Label non_callable, non_function, non_smi;
- __ JumpIfSmi(r1, &non_callable);
- __ bind(&non_smi);
- __ CompareObjectType(r1, r4, r5, JS_FUNCTION_TYPE);
- __ Jump(masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
- RelocInfo::CODE_TARGET, eq);
- __ cmp(r5, Operand(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(r4, FieldMemOperand(r4, Map::kBitFieldOffset));
- __ tst(r4, Operand(1 << Map::kIsCallable));
- __ b(eq, &non_callable);
-
- __ cmp(r5, Operand(JS_PROXY_TYPE));
- __ b(ne, &non_function);
-
- // 0. Prepare for tail call if necessary.
- if (tail_call_mode == TailCallMode::kAllow) {
- PrepareForTailCall(masm, r0, r3, r4, r5);
- }
-
- // 1. Runtime fallback for Proxy [[Call]].
- __ Push(r1);
- // Increase the arguments size to include the pushed function and the
- // existing receiver on the stack.
- __ add(r0, r0, 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 the (original) target.
- __ str(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2));
- // Let the "call_as_function_delegate" take care of the rest.
- __ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, r1);
- __ Jump(masm->isolate()->builtins()->CallFunction(
- ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode),
- RelocInfo::CODE_TARGET);
-
- // 3. Call to something that is not callable.
- __ bind(&non_callable);
- {
- FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
- __ Push(r1);
- __ CallRuntime(Runtime::kThrowCalledNonCallable);
- }
-}
-
-
-// static
-void Builtins::Generate_ConstructFunction(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r1 : the constructor to call (checked to be a JSFunction)
- // -- r3 : the new target (checked to be a constructor)
- // -----------------------------------
- __ AssertFunction(r1);
-
- // Calling convention for function specific ConstructStubs require
- // r2 to contain either an AllocationSite or undefined.
- __ LoadRoot(r2, Heap::kUndefinedValueRootIndex);
-
- // Tail call to the function-specific construct stub (still in the caller
- // context at this point).
- __ ldr(r4, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset));
- __ ldr(r4, FieldMemOperand(r4, SharedFunctionInfo::kConstructStubOffset));
- __ add(pc, r4, Operand(Code::kHeaderSize - kHeapObjectTag));
-}
-
-
-// static
-void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r1 : the function to call (checked to be a JSBoundFunction)
- // -- r3 : the new target (checked to be a constructor)
- // -----------------------------------
- __ AssertBoundFunction(r1);
-
- // Push the [[BoundArguments]] onto the stack.
- Generate_PushBoundArguments(masm);
-
- // Patch new.target to [[BoundTargetFunction]] if new.target equals target.
- __ cmp(r1, r3);
- __ ldr(r3, FieldMemOperand(r1, JSBoundFunction::kBoundTargetFunctionOffset),
- eq);
-
- // Construct the [[BoundTargetFunction]] via the Construct builtin.
- __ ldr(r1, FieldMemOperand(r1, JSBoundFunction::kBoundTargetFunctionOffset));
- __ mov(ip, Operand(ExternalReference(Builtins::kConstruct, masm->isolate())));
- __ ldr(ip, MemOperand(ip));
- __ add(pc, ip, Operand(Code::kHeaderSize - kHeapObjectTag));
-}
-
-
-// static
-void Builtins::Generate_ConstructProxy(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r1 : the constructor to call (checked to be a JSProxy)
- // -- r3 : 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(r1);
- __ Push(r3);
- // Include the pushed new_target, constructor and the receiver.
- __ add(r0, r0, Operand(3));
- // Tail-call to the runtime.
- __ JumpToExternalReference(
- ExternalReference(Runtime::kJSProxyConstruct, masm->isolate()));
-}
-
-
-// static
-void Builtins::Generate_Construct(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : the number of arguments (not including the receiver)
- // -- r1 : the constructor to call (can be any Object)
- // -- r3 : 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(r1, &non_constructor);
-
- // Dispatch based on instance type.
- __ CompareObjectType(r1, r4, r5, JS_FUNCTION_TYPE);
- __ Jump(masm->isolate()->builtins()->ConstructFunction(),
- RelocInfo::CODE_TARGET, eq);
-
- // Check if target has a [[Construct]] internal method.
- __ ldrb(r2, FieldMemOperand(r4, Map::kBitFieldOffset));
- __ tst(r2, Operand(1 << Map::kIsConstructor));
- __ b(eq, &non_constructor);
-
- // Only dispatch to bound functions after checking whether they are
- // constructors.
- __ cmp(r5, Operand(JS_BOUND_FUNCTION_TYPE));
- __ Jump(masm->isolate()->builtins()->ConstructBoundFunction(),
- RelocInfo::CODE_TARGET, eq);
-
- // Only dispatch to proxies after checking whether they are constructors.
- __ cmp(r5, Operand(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.
- __ str(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2));
- // Let the "call_as_constructor_delegate" take care of the rest.
- __ LoadNativeContextSlot(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, r1);
- __ Jump(masm->isolate()->builtins()->CallFunction(),
- RelocInfo::CODE_TARGET);
- }
-
- // Called Construct on an Object that doesn't have a [[Construct]] internal
- // method.
- __ bind(&non_constructor);
- __ Jump(masm->isolate()->builtins()->ConstructedNonConstructable(),
- RelocInfo::CODE_TARGET);
-}
-
-// static
-void Builtins::Generate_AllocateInNewSpace(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r1 : requested object size (untagged)
- // -- lr : return address
- // -----------------------------------
- __ SmiTag(r1);
- __ Push(r1);
- __ Move(cp, Smi::FromInt(0));
- __ TailCallRuntime(Runtime::kAllocateInNewSpace);
-}
-
-// static
-void Builtins::Generate_AllocateInOldSpace(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r1 : requested object size (untagged)
- // -- lr : return address
- // -----------------------------------
- __ SmiTag(r1);
- __ Move(r2, Smi::FromInt(AllocateTargetSpace::encode(OLD_SPACE)));
- __ Push(r1, r2);
- __ Move(cp, Smi::FromInt(0));
- __ TailCallRuntime(Runtime::kAllocateInTargetSpace);
-}
-
-// static
-void Builtins::Generate_StringToNumber(MacroAssembler* masm) {
- // The StringToNumber stub takes one argument in r0.
- __ AssertString(r0);
-
- // Check if string has a cached array index.
- Label runtime;
- __ ldr(r2, FieldMemOperand(r0, String::kHashFieldOffset));
- __ tst(r2, Operand(String::kContainsCachedArrayIndexMask));
- __ b(ne, &runtime);
- __ IndexFromHash(r2, r0);
- __ Ret();
-
- __ bind(&runtime);
- {
- FrameScope frame(masm, StackFrame::INTERNAL);
- // Push argument.
- __ Push(r0);
- // We cannot use a tail call here because this builtin can also be called
- // from wasm.
- __ CallRuntime(Runtime::kStringToNumber);
- }
- __ Ret();
-}
-
-void Builtins::Generate_ToNumber(MacroAssembler* masm) {
- // The ToNumber stub takes one argument in r0.
- STATIC_ASSERT(kSmiTag == 0);
- __ tst(r0, Operand(kSmiTagMask));
- __ Ret(eq);
-
- __ CompareObjectType(r0, r1, r1, HEAP_NUMBER_TYPE);
- // r0: receiver
- // r1: receiver instance type
- __ Ret(eq);
-
- __ Jump(masm->isolate()->builtins()->NonNumberToNumber(),
- RelocInfo::CODE_TARGET);
-}
-
-void Builtins::Generate_NonNumberToNumber(MacroAssembler* masm) {
- // The NonNumberToNumber stub takes one argument in r0.
- __ AssertNotNumber(r0);
-
- __ CompareObjectType(r0, r1, r1, FIRST_NONSTRING_TYPE);
- // r0: receiver
- // r1: receiver instance type
- __ Jump(masm->isolate()->builtins()->StringToNumber(), RelocInfo::CODE_TARGET,
- lo);
-
- Label not_oddball;
- __ cmp(r1, Operand(ODDBALL_TYPE));
- __ b(ne, &not_oddball);
- __ ldr(r0, FieldMemOperand(r0, Oddball::kToNumberOffset));
- __ Ret();
- __ bind(&not_oddball);
- {
- FrameScope frame(masm, StackFrame::INTERNAL);
- // Push argument.
- __ Push(r0);
- // We cannot use a tail call here because this builtin can also be called
- // from wasm.
- __ CallRuntime(Runtime::kToNumber);
- }
- __ Ret();
-}
-
-void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
- // ----------- S t a t e -------------
- // -- r0 : actual number of arguments
- // -- r1 : function (passed through to callee)
- // -- r2 : expected number of arguments
- // -- r3 : new target (passed through to callee)
- // -----------------------------------
-
- Label invoke, dont_adapt_arguments, stack_overflow;
-
- Label enough, too_few;
- __ cmp(r0, r2);
- __ b(lt, &too_few);
- __ cmp(r2, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel));
- __ b(eq, &dont_adapt_arguments);
-
- { // Enough parameters: actual >= expected
- __ bind(&enough);
- EnterArgumentsAdaptorFrame(masm);
- ArgumentAdaptorStackCheck(masm, &stack_overflow);
-
- // Calculate copy start address into r0 and copy end address into r4.
- // r0: actual number of arguments as a smi
- // r1: function
- // r2: expected number of arguments
- // r3: new target (passed through to callee)
- __ add(r0, fp, Operand::PointerOffsetFromSmiKey(r0));
- // adjust for return address and receiver
- __ add(r0, r0, Operand(2 * kPointerSize));
- __ sub(r4, r0, Operand(r2, LSL, kPointerSizeLog2));
-
- // Copy the arguments (including the receiver) to the new stack frame.
- // r0: copy start address
- // r1: function
- // r2: expected number of arguments
- // r3: new target (passed through to callee)
- // r4: copy end address
-
- Label copy;
- __ bind(&copy);
- __ ldr(ip, MemOperand(r0, 0));
- __ push(ip);
- __ cmp(r0, r4); // Compare before moving to next argument.
- __ sub(r0, r0, Operand(kPointerSize));
- __ b(ne, &copy);
-
- __ b(&invoke);
- }
-
- { // Too few parameters: Actual < expected
- __ bind(&too_few);
- EnterArgumentsAdaptorFrame(masm);
- ArgumentAdaptorStackCheck(masm, &stack_overflow);
-
- // Calculate copy start address into r0 and copy end address is fp.
- // r0: actual number of arguments as a smi
- // r1: function
- // r2: expected number of arguments
- // r3: new target (passed through to callee)
- __ add(r0, fp, Operand::PointerOffsetFromSmiKey(r0));
-
- // Copy the arguments (including the receiver) to the new stack frame.
- // r0: copy start address
- // r1: function
- // r2: expected number of arguments
- // r3: new target (passed through to callee)
- Label copy;
- __ bind(&copy);
- // Adjust load for return address and receiver.
- __ ldr(ip, MemOperand(r0, 2 * kPointerSize));
- __ push(ip);
- __ cmp(r0, fp); // Compare before moving to next argument.
- __ sub(r0, r0, Operand(kPointerSize));
- __ b(ne, &copy);
-
- // Fill the remaining expected arguments with undefined.
- // r1: function
- // r2: expected number of arguments
- // r3: new target (passed through to callee)
- __ LoadRoot(ip, Heap::kUndefinedValueRootIndex);
- __ sub(r4, fp, Operand(r2, LSL, kPointerSizeLog2));
- // Adjust for frame.
- __ sub(r4, r4, Operand(StandardFrameConstants::kFixedFrameSizeFromFp +
- 2 * kPointerSize));
-
- Label fill;
- __ bind(&fill);
- __ push(ip);
- __ cmp(sp, r4);
- __ b(ne, &fill);
- }
-
- // Call the entry point.
- __ bind(&invoke);
- __ mov(r0, r2);
- // r0 : expected number of arguments
- // r1 : function (passed through to callee)
- // r3 : new target (passed through to callee)
- __ ldr(r4, FieldMemOperand(r1, JSFunction::kCodeEntryOffset));
- __ Call(r4);
-
- // Store offset of return address for deoptimizer.
- masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset());
-
- // Exit frame and return.
- LeaveArgumentsAdaptorFrame(masm);
- __ Jump(lr);
-
-
- // -------------------------------------------
- // Dont adapt arguments.
- // -------------------------------------------
- __ bind(&dont_adapt_arguments);
- __ ldr(r4, FieldMemOperand(r1, JSFunction::kCodeEntryOffset));
- __ Jump(r4);
-
- __ bind(&stack_overflow);
- {
- FrameScope frame(masm, StackFrame::MANUAL);
- __ CallRuntime(Runtime::kThrowStackOverflow);
- __ bkpt(0);
- }
-}
-
-
-#undef __
-
-} // namespace internal
-} // namespace v8
-
-#endif // V8_TARGET_ARCH_ARM
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