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, ¬_oddball); |
- __ ldr(r0, FieldMemOperand(r0, Oddball::kToNumberOffset)); |
- __ Ret(); |
- __ bind(¬_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(©); |
- __ ldr(ip, MemOperand(r0, 0)); |
- __ push(ip); |
- __ cmp(r0, r4); // Compare before moving to next argument. |
- __ sub(r0, r0, Operand(kPointerSize)); |
- __ b(ne, ©); |
- |
- __ 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(©); |
- // 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, ©); |
- |
- // 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 |