code-stubs-x64.cc revision f87a203d89e1bbb6708282e0b64dbd13d59b723d
180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// Copyright 2010 the V8 project authors. All rights reserved. 280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// Redistribution and use in source and binary forms, with or without 380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// modification, are permitted provided that the following conditions are 480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// met: 580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// 680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// * Redistributions of source code must retain the above copyright 780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// notice, this list of conditions and the following disclaimer. 880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// * Redistributions in binary form must reproduce the above 980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// copyright notice, this list of conditions and the following 1080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// disclaimer in the documentation and/or other materials provided 1180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// with the distribution. 1280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// * Neither the name of Google Inc. nor the names of its 1380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// contributors may be used to endorse or promote products derived 1480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// from this software without specific prior written permission. 1580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// 1680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 2880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#include "v8.h" 2980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 3080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#if defined(V8_TARGET_ARCH_X64) 3180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 3280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#include "bootstrapper.h" 3380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#include "code-stubs.h" 3480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#include "regexp-macro-assembler.h" 3580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 3680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsennamespace v8 { 3780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsennamespace internal { 3880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 3980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#define __ ACCESS_MASM(masm) 4080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid FastNewClosureStub::Generate(MacroAssembler* masm) { 4180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Create a new closure from the given function info in new 4280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // space. Set the context to the current context in rsi. 4380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label gc; 4480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateInNewSpace(JSFunction::kSize, rax, rbx, rcx, &gc, TAG_OBJECT); 4580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 4680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the function info from the stack. 4780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, Operand(rsp, 1 * kPointerSize)); 4880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 4980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Compute the function map in the current global context and set that 5080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // as the map of the allocated object. 5180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); 5280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, FieldOperand(rcx, GlobalObject::kGlobalContextOffset)); 5380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, Operand(rcx, Context::SlotOffset(Context::FUNCTION_MAP_INDEX))); 5480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSObject::kMapOffset), rcx); 5580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 5680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Initialize the rest of the function. We don't have to update the 5780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // write barrier because the allocated object is in new space. 5880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(rbx, Heap::kEmptyFixedArrayRootIndex); 5980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(rcx, Heap::kTheHoleValueRootIndex); 6080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSObject::kPropertiesOffset), rbx); 6180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSObject::kElementsOffset), rbx); 6280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSFunction::kPrototypeOrInitialMapOffset), rcx); 6380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSFunction::kSharedFunctionInfoOffset), rdx); 6480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSFunction::kContextOffset), rsi); 6580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSFunction::kLiteralsOffset), rbx); 6680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 6780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Initialize the code pointer in the function to be the one 6880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // found in the shared function info object. 6980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, FieldOperand(rdx, SharedFunctionInfo::kCodeOffset)); 7080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rdx, FieldOperand(rdx, Code::kHeaderSize)); 7180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSFunction::kCodeEntryOffset), rdx); 7280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 7380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 7480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return and remove the on-stack parameter. 7580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(1 * kPointerSize); 7680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 7780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Create a new closure through the slower runtime call. 7880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&gc); 7980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rcx); // Temporarily remove return address. 8080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rdx); 8180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rsi); 8280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rdx); 8380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rcx); // Restore return address. 8480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kNewClosure, 2, 1); 8580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 8680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 8780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 8880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid FastNewContextStub::Generate(MacroAssembler* masm) { 8980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Try to allocate the context in new space. 9080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label gc; 9180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen int length = slots_ + Context::MIN_CONTEXT_SLOTS; 9280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateInNewSpace((length * kPointerSize) + FixedArray::kHeaderSize, 9380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rax, rbx, rcx, &gc, TAG_OBJECT); 9480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 9580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the function from the stack. 9680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, Operand(rsp, 1 * kPointerSize)); 9780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 9880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Setup the object header. 9980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(kScratchRegister, Heap::kContextMapRootIndex); 10080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, HeapObject::kMapOffset), kScratchRegister); 10180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(FieldOperand(rax, FixedArray::kLengthOffset), Smi::FromInt(length)); 10280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 10380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Setup the fixed slots. 10480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xor_(rbx, rbx); // Set to NULL. 10580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rax, Context::SlotOffset(Context::CLOSURE_INDEX)), rcx); 10680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rax, Context::SlotOffset(Context::FCONTEXT_INDEX)), rax); 10780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rax, Context::SlotOffset(Context::PREVIOUS_INDEX)), rbx); 10880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rax, Context::SlotOffset(Context::EXTENSION_INDEX)), rbx); 10980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 11080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Copy the global object from the surrounding context. 11180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); 11280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rax, Context::SlotOffset(Context::GLOBAL_INDEX)), rbx); 11380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 11480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Initialize the rest of the slots to undefined. 11580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(rbx, Heap::kUndefinedValueRootIndex); 11680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen for (int i = Context::MIN_CONTEXT_SLOTS; i < length; i++) { 11780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rax, Context::SlotOffset(i)), rbx); 11880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 11980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 12080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return and remove the on-stack parameter. 12180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsi, rax); 12280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(1 * kPointerSize); 12380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 12480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Need to collect. Call into runtime system. 12580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&gc); 12680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kNewContext, 1, 1); 12780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 12880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 12980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 13080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid FastCloneShallowArrayStub::Generate(MacroAssembler* masm) { 13180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Stack layout on entry: 13280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // 13380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // [rsp + kPointerSize]: constant elements. 13480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // [rsp + (2 * kPointerSize)]: literal index. 13580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // [rsp + (3 * kPointerSize)]: literals array. 13680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 13780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // All sizes here are multiples of kPointerSize. 13880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen int elements_size = (length_ > 0) ? FixedArray::SizeFor(length_) : 0; 13980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen int size = JSArray::kSize + elements_size; 14080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 14180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load boilerplate object into rcx and check if we need to create a 14280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // boilerplate. 14380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label slow_case; 14480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, Operand(rsp, 3 * kPointerSize)); 14580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, 2 * kPointerSize)); 14680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SmiIndex index = masm->SmiToIndex(rax, rax, kPointerSizeLog2); 14780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, 14880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FieldOperand(rcx, index.reg, index.scale, FixedArray::kHeaderSize)); 14980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(rcx, Heap::kUndefinedValueRootIndex); 15080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &slow_case); 15180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 15280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (FLAG_debug_code) { 15380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const char* message; 15480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Heap::RootListIndex expected_map_index; 15580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (mode_ == CLONE_ELEMENTS) { 15680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen message = "Expected (writable) fixed array"; 15780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen expected_map_index = Heap::kFixedArrayMapRootIndex; 15880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 15980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(mode_ == COPY_ON_WRITE_ELEMENTS); 16080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen message = "Expected copy-on-write fixed array"; 16180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen expected_map_index = Heap::kFixedCOWArrayMapRootIndex; 16280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 16380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rcx); 16480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, FieldOperand(rcx, JSArray::kElementsOffset)); 16580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(FieldOperand(rcx, HeapObject::kMapOffset), 16680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen expected_map_index); 16780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Assert(equal, message); 16880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rcx); 16980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 17080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 17180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Allocate both the JS array and the elements array in one big 17280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // allocation. This avoids multiple limit checks. 17380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateInNewSpace(size, rax, rbx, rdx, &slow_case, TAG_OBJECT); 17480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 17580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Copy the JS array part. 17680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen for (int i = 0; i < JSArray::kSize; i += kPointerSize) { 17780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if ((i != JSArray::kElementsOffset) || (length_ == 0)) { 17880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, FieldOperand(rcx, i)); 17980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, i), rbx); 18080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 18180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 18280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 18380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (length_ > 0) { 18480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get hold of the elements array of the boilerplate and setup the 18580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // elements pointer in the resulting object. 18680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, FieldOperand(rcx, JSArray::kElementsOffset)); 18780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rdx, Operand(rax, JSArray::kSize)); 18880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSArray::kElementsOffset), rdx); 18980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 19080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Copy the elements array. 19180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen for (int i = 0; i < elements_size; i += kPointerSize) { 19280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, FieldOperand(rcx, i)); 19380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rdx, i), rbx); 19480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 19580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 19680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 19780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return and remove the on-stack parameters. 19880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(3 * kPointerSize); 19980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 20080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&slow_case); 20180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kCreateArrayLiteralShallow, 3, 1); 20280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 20380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 20480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 20580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid ToBooleanStub::Generate(MacroAssembler* masm) { 2060d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel false_result, true_result, not_string; 20780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, 1 * kPointerSize)); 20880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 20980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // 'null' => false. 21080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(rax, Heap::kNullValueRootIndex); 21180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &false_result); 21280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 21380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the map and type of the heap object. 21480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // We don't use CmpObjectType because we manipulate the type field. 21580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, FieldOperand(rax, HeapObject::kMapOffset)); 21680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbq(rcx, FieldOperand(rdx, Map::kInstanceTypeOffset)); 21780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 21880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Undetectable => false. 21980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbq(rbx, FieldOperand(rdx, Map::kBitFieldOffset)); 22080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ and_(rbx, Immediate(1 << Map::kIsUndetectable)); 22180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &false_result); 22280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 22380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // JavaScript object => true. 22480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rcx, Immediate(FIRST_JS_OBJECT_TYPE)); 22580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, &true_result); 22680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 22780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // String value => false iff empty. 22880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rcx, Immediate(FIRST_NONSTRING_TYPE)); 22980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, ¬_string); 23080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, FieldOperand(rax, String::kLengthOffset)); 23180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiTest(rdx); 23280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &false_result); 23380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&true_result); 23480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 23580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_string); 23680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(rdx, Heap::kHeapNumberMapRootIndex); 23780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &true_result); 23880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // HeapNumber => false iff +0, -0, or NaN. 23980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // These three cases set the zero flag when compared to zero using ucomisd. 24080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorpd(xmm0, xmm0); 24180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ucomisd(xmm0, FieldOperand(rax, HeapNumber::kValueOffset)); 24280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &false_result); 24380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fall through to |true_result|. 24480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 24580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return 1/0 for true/false in rax. 24680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&true_result); 24780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Immediate(1)); 24880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(1 * kPointerSize); 24980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&false_result); 25080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xor_(rax, rax); 25180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(1 * kPointerSize); 25280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 25380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 25480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 25580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenconst char* GenericBinaryOpStub::GetName() { 25680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (name_ != NULL) return name_; 25780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const int kMaxNameLength = 100; 25880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen name_ = Bootstrapper::AllocateAutoDeletedArray(kMaxNameLength); 25980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (name_ == NULL) return "OOM"; 26080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const char* op_name = Token::Name(op_); 26180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const char* overwrite_name; 26280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (mode_) { 26380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case NO_OVERWRITE: overwrite_name = "Alloc"; break; 26480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case OVERWRITE_RIGHT: overwrite_name = "OverwriteRight"; break; 26580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case OVERWRITE_LEFT: overwrite_name = "OverwriteLeft"; break; 26680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: overwrite_name = "UnknownOverwrite"; break; 26780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 26880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 26980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen OS::SNPrintF(Vector<char>(name_, kMaxNameLength), 27080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen "GenericBinaryOpStub_%s_%s%s_%s%s_%s_%s", 27180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen op_name, 27280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen overwrite_name, 27380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen (flags_ & NO_SMI_CODE_IN_STUB) ? "_NoSmiInStub" : "", 27480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen args_in_registers_ ? "RegArgs" : "StackArgs", 27580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen args_reversed_ ? "_R" : "", 27680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static_operands_type_.ToString(), 27780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen BinaryOpIC::GetName(runtime_operands_type_)); 27880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen return name_; 27980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 28080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 28180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 28280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid GenericBinaryOpStub::GenerateCall( 28380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen MacroAssembler* masm, 28480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register left, 28580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register right) { 28680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!ArgsInRegistersSupported()) { 28780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Pass arguments on the stack. 28880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(left); 28980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(right); 29080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 29180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The calling convention with registers is left in rdx and right in rax. 29280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register left_arg = rdx; 29380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register right_arg = rax; 29480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!(left.is(left_arg) && right.is(right_arg))) { 29580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (left.is(right_arg) && right.is(left_arg)) { 29680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (IsOperationCommutative()) { 29780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SetArgsReversed(); 29880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 29980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xchg(left, right); 30080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 30180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else if (left.is(left_arg)) { 30280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(right_arg, right); 30380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else if (right.is(right_arg)) { 30480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(left_arg, left); 30580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else if (left.is(right_arg)) { 30680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (IsOperationCommutative()) { 30780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(left_arg, right); 30880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SetArgsReversed(); 30980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 31080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Order of moves important to avoid destroying left argument. 31180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(left_arg, left); 31280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(right_arg, right); 31380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 31480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else if (right.is(left_arg)) { 31580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (IsOperationCommutative()) { 31680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(right_arg, left); 31780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SetArgsReversed(); 31880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 31980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Order of moves important to avoid destroying right argument. 32080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(right_arg, right); 32180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(left_arg, left); 32280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 32380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 32480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Order of moves is not important. 32580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(left_arg, left); 32680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(right_arg, right); 32780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 32880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 32980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 33080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Update flags to indicate that arguments are in registers. 33180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SetArgsInRegisters(); 33280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::generic_binary_stub_calls_regs, 1); 33380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 33480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 33580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call the stub. 33680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CallStub(this); 33780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 33880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 33980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 34080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid GenericBinaryOpStub::GenerateCall( 34180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen MacroAssembler* masm, 34280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register left, 34380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Smi* right) { 34480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!ArgsInRegistersSupported()) { 34580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Pass arguments on the stack. 34680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(left); 34780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Push(right); 34880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 34980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The calling convention with registers is left in rdx and right in rax. 35080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register left_arg = rdx; 35180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register right_arg = rax; 35280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (left.is(left_arg)) { 35380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(right_arg, right); 35480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else if (left.is(right_arg) && IsOperationCommutative()) { 35580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(left_arg, right); 35680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SetArgsReversed(); 35780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 35880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // For non-commutative operations, left and right_arg might be 35980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the same register. Therefore, the order of the moves is 36080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // important here in order to not overwrite left before moving 36180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // it to left_arg. 36280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(left_arg, left); 36380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(right_arg, right); 36480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 36580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 36680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Update flags to indicate that arguments are in registers. 36780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SetArgsInRegisters(); 36880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::generic_binary_stub_calls_regs, 1); 36980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 37080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 37180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call the stub. 37280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CallStub(this); 37380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 37480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 37580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 37680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid GenericBinaryOpStub::GenerateCall( 37780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen MacroAssembler* masm, 37880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Smi* left, 37980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register right) { 38080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!ArgsInRegistersSupported()) { 38180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Pass arguments on the stack. 38280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Push(left); 38380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(right); 38480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 38580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The calling convention with registers is left in rdx and right in rax. 38680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register left_arg = rdx; 38780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register right_arg = rax; 38880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (right.is(right_arg)) { 38980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(left_arg, left); 39080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else if (right.is(left_arg) && IsOperationCommutative()) { 39180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(right_arg, left); 39280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SetArgsReversed(); 39380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 39480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // For non-commutative operations, right and left_arg might be 39580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the same register. Therefore, the order of the moves is 39680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // important here in order to not overwrite right before moving 39780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // it to right_arg. 39880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(right_arg, right); 39980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(left_arg, left); 40080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 40180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Update flags to indicate that arguments are in registers. 40280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SetArgsInRegisters(); 40380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::generic_binary_stub_calls_regs, 1); 40480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 40580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 40680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call the stub. 40780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CallStub(this); 40880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 40980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 41080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 41180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenclass FloatingPointHelper : public AllStatic { 41280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen public: 41380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load the operands from rdx and rax into xmm0 and xmm1, as doubles. 41480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the operands are not both numbers, jump to not_numbers. 41580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Leaves rdx and rax unchanged. SmiOperands assumes both are smis. 41680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // NumberOperands assumes both are smis or heap numbers. 41780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static void LoadSSE2SmiOperands(MacroAssembler* masm); 41880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static void LoadSSE2NumberOperands(MacroAssembler* masm); 41980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static void LoadSSE2UnknownOperands(MacroAssembler* masm, 42080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label* not_numbers); 42180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 42280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Takes the operands in rdx and rax and loads them as integers in rax 42380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // and rcx. 42480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static void LoadAsIntegers(MacroAssembler* masm, 42580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label* operand_conversion_failure, 42680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register heap_number_map); 42780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // As above, but we know the operands to be numbers. In that case, 42880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // conversion can't fail. 42980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static void LoadNumbersAsIntegers(MacroAssembler* masm); 43080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen}; 43180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 43280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 43380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid GenericBinaryOpStub::GenerateSmiCode(MacroAssembler* masm, Label* slow) { 43480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // 1. Move arguments into rdx, rax except for DIV and MOD, which need the 43580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // dividend in rax and rdx free for the division. Use rax, rbx for those. 43680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Comment load_comment(masm, "-- Load arguments"); 43780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register left = rdx; 43880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register right = rax; 43980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (op_ == Token::DIV || op_ == Token::MOD) { 44080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen left = rax; 44180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen right = rbx; 44280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (HasArgsInRegisters()) { 44380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, rax); 44480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rdx); 44580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 44680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 44780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!HasArgsInRegisters()) { 44880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(right, Operand(rsp, 1 * kPointerSize)); 44980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(left, Operand(rsp, 2 * kPointerSize)); 45080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 45180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 45280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label not_smis; 45380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // 2. Smi check both operands. 45480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (static_operands_type_.IsSmi()) { 45580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Skip smi check if we know that both arguments are smis. 45680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (FLAG_debug_code) { 45780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AbortIfNotSmi(left); 45880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AbortIfNotSmi(right); 45980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 46080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (op_ == Token::BIT_OR) { 46180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Handle OR here, since we do extra smi-checking in the or code below. 46280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiOr(right, right, left); 46380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateReturn(masm); 46480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen return; 46580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 46680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 46780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (op_ != Token::BIT_OR) { 46880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Skip the check for OR as it is better combined with the 46980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // actual operation. 47080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Comment smi_check_comment(masm, "-- Smi check arguments"); 47180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotBothSmi(left, right, ¬_smis); 47280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 47380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 47480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 47580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // 3. Operands are both smis (except for OR), perform the operation leaving 47680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the result in rax and check the result if necessary. 47780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Comment perform_smi(masm, "-- Perform smi operation"); 47880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label use_fp_on_smis; 47980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (op_) { 48080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::ADD: { 48180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(right.is(rax)); 48280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiAdd(right, right, left, &use_fp_on_smis); // ADD is commutative. 48380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 48480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 48580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 48680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SUB: { 48780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiSub(left, left, right, &use_fp_on_smis); 48880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, left); 48980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 49080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 49180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 49280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::MUL: 49380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(right.is(rax)); 49480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiMul(right, right, left, &use_fp_on_smis); // MUL is commutative. 49580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 49680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 49780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::DIV: 49880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(left.is(rax)); 49980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiDiv(left, left, right, &use_fp_on_smis); 50080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 50180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 50280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::MOD: 50380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(left.is(rax)); 50480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiMod(left, left, right, slow); 50580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 50680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 50780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_OR: 50880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(right.is(rax)); 50980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, right); // Save the right operand. 51080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiOr(right, right, left); // BIT_OR is commutative. 51180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(right, Immediate(kSmiTagMask)); 51280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, ¬_smis); 51380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 51480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 51580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_AND: 51680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(right.is(rax)); 51780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiAnd(right, right, left); // BIT_AND is commutative. 51880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 51980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 52080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_XOR: 52180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(right.is(rax)); 52280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiXor(right, right, left); // BIT_XOR is commutative. 52380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 52480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 52580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SHL: 52680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SHR: 52780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SAR: 52880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (op_) { 52980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SAR: 53080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiShiftArithmeticRight(left, left, right); 53180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 53280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SHR: 53380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiShiftLogicalRight(left, left, right, slow); 53480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 53580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SHL: 53680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiShiftLeft(left, left, right); 53780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 53880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: 53980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen UNREACHABLE(); 54080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 54180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, left); 54280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 54380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 54480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: 54580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen UNREACHABLE(); 54680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 54780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 54880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 54980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // 4. Emit return of result in rax. 55080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateReturn(masm); 55180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 55280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // 5. For some operations emit inline code to perform floating point 55380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // operations on known smis (e.g., if the result of the operation 55480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // overflowed the smi range). 55580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (op_) { 55680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::ADD: 55780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SUB: 55880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::MUL: 55980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::DIV: { 56080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(use_fp_on_smis.is_linked()); 56180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&use_fp_on_smis); 56280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (op_ == Token::DIV) { 56380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, rax); 56480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rbx); 56580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 56680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // left is rdx, right is rax. 56780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateHeapNumber(rbx, rcx, slow); 56880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FloatingPointHelper::LoadSSE2SmiOperands(masm); 56980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (op_) { 57080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::ADD: __ addsd(xmm0, xmm1); break; 57180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SUB: __ subsd(xmm0, xmm1); break; 57280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::MUL: __ mulsd(xmm0, xmm1); break; 57380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::DIV: __ divsd(xmm0, xmm1); break; 57480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: UNREACHABLE(); 57580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 57680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movsd(FieldOperand(rbx, HeapNumber::kValueOffset), xmm0); 57780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rbx); 57880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateReturn(masm); 57980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 58080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: 58180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 58280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 58380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 58480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // 6. Non-smi operands, fall out to the non-smi code with the operands in 58580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx and rax. 58680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Comment done_comment(masm, "-- Enter non-smi code"); 58780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_smis); 58880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 58980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (op_) { 59080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::DIV: 59180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::MOD: 59280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Operands are in rax, rbx at this point. 59380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, rax); 59480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rbx); 59580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 59680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 59780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_OR: 59880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Right operand is saved in rcx and rax was destroyed by the smi 59980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // operation. 60080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rcx); 60180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 60280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 60380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: 60480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 60580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 60680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 60780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 60880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 60980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid GenericBinaryOpStub::Generate(MacroAssembler* masm) { 61080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label call_runtime; 61180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 61280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (ShouldGenerateSmiCode()) { 61380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateSmiCode(masm, &call_runtime); 61480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else if (op_ != Token::MOD) { 61580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!HasArgsInRegisters()) { 61680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateLoadArguments(masm); 61780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 61880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 61980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Floating point case. 62080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (ShouldGenerateFPCode()) { 62180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (op_) { 62280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::ADD: 62380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SUB: 62480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::MUL: 62580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::DIV: { 62680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (runtime_operands_type_ == BinaryOpIC::DEFAULT && 62780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen HasSmiCodeInStub()) { 62880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Execution reaches this point when the first non-smi argument occurs 62980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // (and only if smi code is generated). This is the right moment to 63080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // patch to HEAP_NUMBERS state. The transition is attempted only for 63180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the four basic operations. The stub stays in the DEFAULT state 63280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // forever for all other operations (also if smi code is skipped). 63380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateTypeTransition(masm); 63480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 63580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 63680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 63780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label not_floats; 63880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: y 63980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: x 64080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (static_operands_type_.IsNumber()) { 64180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (FLAG_debug_code) { 64280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Assert at runtime that inputs are only numbers. 64380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AbortIfNotNumber(rdx); 64480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AbortIfNotNumber(rax); 64580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 64680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FloatingPointHelper::LoadSSE2NumberOperands(masm); 64780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 64880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FloatingPointHelper::LoadSSE2UnknownOperands(masm, &call_runtime); 64980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 65080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 65180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (op_) { 65280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::ADD: __ addsd(xmm0, xmm1); break; 65380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SUB: __ subsd(xmm0, xmm1); break; 65480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::MUL: __ mulsd(xmm0, xmm1); break; 65580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::DIV: __ divsd(xmm0, xmm1); break; 65680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: UNREACHABLE(); 65780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 65880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Allocate a heap number, if needed. 65980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label skip_allocation; 66080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen OverwriteMode mode = mode_; 66180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (HasArgsReversed()) { 66280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (mode == OVERWRITE_RIGHT) { 66380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen mode = OVERWRITE_LEFT; 66480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else if (mode == OVERWRITE_LEFT) { 66580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen mode = OVERWRITE_RIGHT; 66680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 66780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 66880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (mode) { 66980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case OVERWRITE_LEFT: 67080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rdx, &skip_allocation); 67180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateHeapNumber(rbx, rcx, &call_runtime); 67280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, rbx); 67380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&skip_allocation); 67480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rdx); 67580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 67680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case OVERWRITE_RIGHT: 67780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the argument in rax is already an object, we skip the 67880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // allocation of a heap number. 67980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rax, &skip_allocation); 68080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fall through! 68180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case NO_OVERWRITE: 68280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Allocate a heap number for the result. Keep rax and rdx intact 68380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // for the possible runtime call. 68480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateHeapNumber(rbx, rcx, &call_runtime); 68580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rbx); 68680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&skip_allocation); 68780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 68880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: UNREACHABLE(); 68980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 69080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movsd(FieldOperand(rax, HeapNumber::kValueOffset), xmm0); 69180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateReturn(masm); 69280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_floats); 69380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (runtime_operands_type_ == BinaryOpIC::DEFAULT && 69480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen !HasSmiCodeInStub()) { 69580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Execution reaches this point when the first non-number argument 69680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // occurs (and only if smi code is skipped from the stub, otherwise 69780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the patching has already been done earlier in this case branch). 69880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // A perfect moment to try patching to STRINGS for ADD operation. 69980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (op_ == Token::ADD) { 70080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateTypeTransition(masm); 70180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 70280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 70380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 70480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 70580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::MOD: { 70680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // For MOD we go directly to runtime in the non-smi case. 70780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 70880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 70980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_OR: 71080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_AND: 71180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_XOR: 71280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SAR: 71380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SHL: 71480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SHR: { 71580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label skip_allocation, non_smi_shr_result; 71680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register heap_number_map = r9; 71780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); 71880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (static_operands_type_.IsNumber()) { 71980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (FLAG_debug_code) { 72080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Assert at runtime that inputs are only numbers. 72180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AbortIfNotNumber(rdx); 72280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AbortIfNotNumber(rax); 72380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 72480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FloatingPointHelper::LoadNumbersAsIntegers(masm); 72580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 72680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FloatingPointHelper::LoadAsIntegers(masm, 72780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &call_runtime, 72880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen heap_number_map); 72980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 73080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (op_) { 73180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_OR: __ orl(rax, rcx); break; 73280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_AND: __ andl(rax, rcx); break; 73380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_XOR: __ xorl(rax, rcx); break; 73480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SAR: __ sarl_cl(rax); break; 73580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SHL: __ shll_cl(rax); break; 73680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SHR: { 73780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shrl_cl(rax); 73880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if result is negative. This can only happen for a shift 73980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // by zero. 74080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(rax, rax); 74180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(negative, &non_smi_shr_result); 74280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 74380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 74480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: UNREACHABLE(); 74580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 74680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 74780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kSmiValueSize == 32); 74880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Tag smi result and return. 74980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Integer32ToSmi(rax, rax); 75080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateReturn(masm); 75180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 75280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // All bit-ops except SHR return a signed int32 that can be 75380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // returned immediately as a smi. 75480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // We might need to allocate a HeapNumber if we shift a negative 75580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // number right by zero (i.e., convert to UInt32). 75680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (op_ == Token::SHR) { 75780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(non_smi_shr_result.is_linked()); 75880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&non_smi_shr_result); 75980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Allocate a heap number if needed. 76080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rbx, rax); // rbx holds result value (uint32 value as int64). 76180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (mode_) { 76280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case OVERWRITE_LEFT: 76380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case OVERWRITE_RIGHT: 76480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the operand was an object, we skip the 76580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // allocation of a heap number. 76680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, mode_ == OVERWRITE_RIGHT ? 76780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 1 * kPointerSize : 2 * kPointerSize)); 76880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rax, &skip_allocation); 76980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fall through! 77080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case NO_OVERWRITE: 77180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Allocate heap number in new space. 77280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Not using AllocateHeapNumber macro in order to reuse 77380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // already loaded heap_number_map. 77480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateInNewSpace(HeapNumber::kSize, 77580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rax, 77680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rcx, 77780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen no_reg, 77880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &call_runtime, 77980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen TAG_OBJECT); 78080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Set the map. 78180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (FLAG_debug_code) { 78280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AbortIfNotRootValue(heap_number_map, 78380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Heap::kHeapNumberMapRootIndex, 78480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen "HeapNumberMap register clobbered."); 78580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 78680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, HeapObject::kMapOffset), 78780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen heap_number_map); 78880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&skip_allocation); 78980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 79080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: UNREACHABLE(); 79180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 79280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Store the result in the HeapNumber and return. 79380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cvtqsi2sd(xmm0, rbx); 79480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movsd(FieldOperand(rax, HeapNumber::kValueOffset), xmm0); 79580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateReturn(masm); 79680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 79780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 79880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 79980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 80080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: UNREACHABLE(); break; 80180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 80280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 80380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 80480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If all else fails, use the runtime system to get the correct 80580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // result. If arguments was passed in registers now place them on the 80680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // stack in the correct order below the return address. 80780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&call_runtime); 80880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 80980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (HasArgsInRegisters()) { 81080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateRegisterArgsPush(masm); 81180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 81280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 81380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (op_) { 81480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::ADD: { 81580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Registers containing left and right operands respectively. 81680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register lhs, rhs; 81780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 81880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (HasArgsReversed()) { 81980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen lhs = rax; 82080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rhs = rdx; 82180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 82280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen lhs = rdx; 82380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rhs = rax; 82480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 82580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 82680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Test for string arguments before calling runtime. 82780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label not_strings, both_strings, not_string1, string1, string1_smi2; 82880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 82980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If this stub has already generated FP-specific code then the arguments 83080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // are already in rdx and rax. 83180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!ShouldGenerateFPCode() && !HasArgsInRegisters()) { 83280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateLoadArguments(masm); 83380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 83480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 83580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Condition is_smi; 83680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen is_smi = masm->CheckSmi(lhs); 83780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(is_smi, ¬_string1); 83880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(lhs, FIRST_NONSTRING_TYPE, r8); 83980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, ¬_string1); 84080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 84180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // First argument is a a string, test second. 84280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen is_smi = masm->CheckSmi(rhs); 84380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(is_smi, &string1_smi2); 84480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rhs, FIRST_NONSTRING_TYPE, r9); 84580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, &string1); 84680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 84780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // First and second argument are strings. 84880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StringAddStub string_add_stub(NO_STRING_CHECK_IN_STUB); 84980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallStub(&string_add_stub); 85080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 85180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&string1_smi2); 85280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // First argument is a string, second is a smi. Try to lookup the number 85380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // string for the smi in the number string cache. 85480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen NumberToStringStub::GenerateLookupNumberStringCache( 85580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen masm, rhs, rbx, rcx, r8, true, &string1); 85680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 85780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Replace second argument on stack and tailcall string add stub to make 85880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the result. 85980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rsp, 1 * kPointerSize), rbx); 86080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallStub(&string_add_stub); 86180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 86280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Only first argument is a string. 86380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&string1); 86480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::STRING_ADD_LEFT, JUMP_FUNCTION); 86580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 86680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // First argument was not a string, test second. 86780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_string1); 86880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen is_smi = masm->CheckSmi(rhs); 86980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(is_smi, ¬_strings); 87080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rhs, FIRST_NONSTRING_TYPE, rhs); 87180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, ¬_strings); 87280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 87380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Only second argument is a string. 87480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::STRING_ADD_RIGHT, JUMP_FUNCTION); 87580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 87680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_strings); 87780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Neither argument is a string. 87880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::ADD, JUMP_FUNCTION); 87980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 88080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 88180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SUB: 88280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::SUB, JUMP_FUNCTION); 88380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 88480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::MUL: 88580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::MUL, JUMP_FUNCTION); 88680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 88780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::DIV: 88880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::DIV, JUMP_FUNCTION); 88980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 89080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::MOD: 89180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::MOD, JUMP_FUNCTION); 89280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 89380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_OR: 89480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::BIT_OR, JUMP_FUNCTION); 89580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 89680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_AND: 89780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::BIT_AND, JUMP_FUNCTION); 89880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 89980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_XOR: 90080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::BIT_XOR, JUMP_FUNCTION); 90180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 90280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SAR: 90380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::SAR, JUMP_FUNCTION); 90480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 90580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SHL: 90680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::SHL, JUMP_FUNCTION); 90780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 90880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SHR: 90980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::SHR, JUMP_FUNCTION); 91080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 91180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: 91280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen UNREACHABLE(); 91380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 91480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 91580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 91680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 91780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid GenericBinaryOpStub::GenerateLoadArguments(MacroAssembler* masm) { 91880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(!HasArgsInRegisters()); 91980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, 1 * kPointerSize)); 92080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, Operand(rsp, 2 * kPointerSize)); 92180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 92280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 92380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 92480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid GenericBinaryOpStub::GenerateReturn(MacroAssembler* masm) { 92580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If arguments are not passed in registers remove them from the stack before 92680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // returning. 92780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!HasArgsInRegisters()) { 92880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(2 * kPointerSize); // Remove both operands 92980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 93080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 93180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 93280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 93380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 93480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 93580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid GenericBinaryOpStub::GenerateRegisterArgsPush(MacroAssembler* masm) { 93680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(HasArgsInRegisters()); 93780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rcx); 93880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (HasArgsReversed()) { 93980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rax); 94080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rdx); 94180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 94280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rdx); 94380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rax); 94480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 94580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rcx); 94680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 94780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 94880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 94980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid GenericBinaryOpStub::GenerateTypeTransition(MacroAssembler* masm) { 95080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label get_result; 95180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 95280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Ensure the operands are on the stack. 95380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (HasArgsInRegisters()) { 95480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateRegisterArgsPush(masm); 95580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 95680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 95780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Left and right arguments are already on stack. 95880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rcx); // Save the return address. 95980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 96080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Push this stub's key. 96180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Push(Smi::FromInt(MinorKey())); 96280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 96380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Although the operation and the type info are encoded into the key, 96480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the encoding is opaque, so push them too. 96580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Push(Smi::FromInt(op_)); 96680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 96780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Push(Smi::FromInt(runtime_operands_type_)); 96880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 96980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rcx); // The return address. 97080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 97180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Perform patching to an appropriate fast case and return the result. 97280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallExternalReference( 97380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference(IC_Utility(IC::kBinaryOp_Patch)), 97480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 5, 97580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 1); 97680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 97780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 97880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 97980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian MonsenHandle<Code> GetBinaryOpStub(int key, BinaryOpIC::TypeInfo type_info) { 98080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenericBinaryOpStub stub(key, type_info); 98180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen return stub.GetCode(); 98280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 98380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 98480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 98580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid TranscendentalCacheStub::Generate(MacroAssembler* masm) { 98680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Input on stack: 98780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[8]: argument (should be number). 98880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[0]: return address. 98980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label runtime_call; 99080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label runtime_call_clear_stack; 99180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label input_not_smi; 9920d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel loaded; 99380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Test that rax is a number. 99480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kPointerSize)); 99580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rax, &input_not_smi); 99680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Input is a smi. Untag and load it onto the FPU stack. 99780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Then load the bits of the double into rbx. 99880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rax, rax); 99980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ subq(rsp, Immediate(kPointerSize)); 100080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cvtlsi2sd(xmm1, rax); 100180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movsd(Operand(rsp, 0), xmm1); 100280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, xmm1); 100380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, xmm1); 100480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fld_d(Operand(rsp, 0)); 100580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rsp, Immediate(kPointerSize)); 100680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&loaded); 100780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 100880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&input_not_smi); 100980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if input is a HeapNumber. 101080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(rbx, Factory::heap_number_map()); 101180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rbx, FieldOperand(rax, HeapObject::kMapOffset)); 101280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &runtime_call); 101380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Input is a HeapNumber. Push it on the FPU stack and load its 101480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // bits into rbx. 101580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fld_d(FieldOperand(rax, HeapNumber::kValueOffset)); 101680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, FieldOperand(rax, HeapNumber::kValueOffset)); 101780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, rbx); 101880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&loaded); 101980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // ST[0] == double value 102080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx = bits of double value. 102180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx = also bits of double value. 102280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Compute hash (h is 32 bits, bits are 64 and the shifts are arithmetic): 102380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // h = h0 = bits ^ (bits >> 32); 102480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // h ^= h >> 16; 102580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // h ^= h >> 8; 102680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // h = h & (cacheSize - 1); 102780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // or h = (h0 ^ (h0 >> 8) ^ (h0 >> 16) ^ (h0 >> 24)) & (cacheSize - 1) 102880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ sar(rdx, Immediate(32)); 102980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(rdx, rbx); 103080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rcx, rdx); 103180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rax, rdx); 103280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rdi, rdx); 103380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ sarl(rdx, Immediate(8)); 103480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ sarl(rcx, Immediate(16)); 103580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ sarl(rax, Immediate(24)); 103680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(rcx, rdx); 103780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(rax, rdi); 103880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(rcx, rax); 103980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(IsPowerOf2(TranscendentalCache::kCacheSize)); 104080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ andl(rcx, Immediate(TranscendentalCache::kCacheSize - 1)); 104180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 104280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // ST[0] == double value. 104380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx = bits of double value. 104480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx = TranscendentalCache::hash(double value). 104580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, ExternalReference::transcendental_cache_array_address()); 104680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax points to cache array. 104780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rax, type_ * sizeof(TranscendentalCache::caches_[0]))); 104880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax points to the cache for the type type_. 104980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If NULL, the cache hasn't been initialized yet, so go through runtime. 105080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testq(rax, rax); 105180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &runtime_call_clear_stack); 105280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef DEBUG 105380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the layout of cache elements match expectations. 105480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen { // NOLINT - doesn't like a single brace on a line. 105580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen TranscendentalCache::Element test_elem[2]; 105680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen char* elem_start = reinterpret_cast<char*>(&test_elem[0]); 105780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen char* elem2_start = reinterpret_cast<char*>(&test_elem[1]); 105880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen char* elem_in0 = reinterpret_cast<char*>(&(test_elem[0].in[0])); 105980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen char* elem_in1 = reinterpret_cast<char*>(&(test_elem[0].in[1])); 106080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen char* elem_out = reinterpret_cast<char*>(&(test_elem[0].output)); 106180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Two uint_32's and a pointer per element. 106280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen CHECK_EQ(16, static_cast<int>(elem2_start - elem_start)); 106380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen CHECK_EQ(0, static_cast<int>(elem_in0 - elem_start)); 106480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen CHECK_EQ(kIntSize, static_cast<int>(elem_in1 - elem_start)); 106580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen CHECK_EQ(2 * kIntSize, static_cast<int>(elem_out - elem_start)); 106680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 106780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 106880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Find the address of the rcx'th entry in the cache, i.e., &rax[rcx*16]. 106980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addl(rcx, rcx); 107080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rcx, Operand(rax, rcx, times_8, 0)); 107180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if cache matches: Double value is stored in uint32_t[2] array. 10720d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel cache_miss; 107380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rbx, Operand(rcx, 0)); 107480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &cache_miss); 107580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Cache hit! 107680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rcx, 2 * kIntSize)); 107780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fstp(0); // Clear FPU stack. 107880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(kPointerSize); 107980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 108080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&cache_miss); 108180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Update cache with new value. 108280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label nan_result; 108380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateOperation(masm, &nan_result); 108480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateHeapNumber(rax, rdi, &runtime_call_clear_stack); 108580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rcx, 0), rbx); 108680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rcx, 2 * kIntSize), rax); 108780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fstp_d(FieldOperand(rax, HeapNumber::kValueOffset)); 108880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(kPointerSize); 108980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 109080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&runtime_call_clear_stack); 109180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fstp(0); 109280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&runtime_call); 109380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallExternalReference(ExternalReference(RuntimeFunction()), 1, 1); 109480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 109580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&nan_result); 109680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fstp(0); // Remove argument from FPU stack. 109780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(rax, Heap::kNanValueRootIndex); 109880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rcx, 0), rbx); 109980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rcx, 2 * kIntSize), rax); 110080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(kPointerSize); 110180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 110280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 110380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 110480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian MonsenRuntime::FunctionId TranscendentalCacheStub::RuntimeFunction() { 110580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (type_) { 110680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Add more cases when necessary. 110780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case TranscendentalCache::SIN: return Runtime::kMath_sin; 110880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case TranscendentalCache::COS: return Runtime::kMath_cos; 110980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: 111080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen UNIMPLEMENTED(); 111180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen return Runtime::kAbort; 111280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 111380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 111480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 111580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 111680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid TranscendentalCacheStub::GenerateOperation(MacroAssembler* masm, 111780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label* on_nan_result) { 111880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Registers: 111980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: Bits of input double. Must be preserved. 112080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: Pointer to cache entry. Must be preserved. 112180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // st(0): Input double 112280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label done; 112380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(type_ == TranscendentalCache::SIN || 112480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen type_ == TranscendentalCache::COS); 112580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // More transcendental types can be added later. 112680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 112780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Both fsin and fcos require arguments in the range +/-2^63 and 112880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // return NaN for infinities and NaN. They can share all code except 112980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the actual fsin/fcos operation. 113080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label in_range; 113180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If argument is outside the range -2^63..2^63, fsin/cos doesn't 113280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // work. We must reduce it to the appropriate range. 113380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdi, rbx); 113480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Move exponent and sign bits to low bits. 113580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shr(rdi, Immediate(HeapNumber::kMantissaBits)); 113680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Remove sign bit. 113780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ andl(rdi, Immediate((1 << HeapNumber::kExponentBits) - 1)); 113880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen int supported_exponent_limit = (63 + HeapNumber::kExponentBias); 113980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(rdi, Immediate(supported_exponent_limit)); 114080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(below, &in_range); 114180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check for infinity and NaN. Both return NaN for sin. 114280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(rdi, Immediate(0x7ff)); 114380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, on_nan_result); 114480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 114580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Use fpmod to restrict argument to the range +/-2*PI. 114680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fldpi(); 114780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fadd(0); 114880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fld(1); 114980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // FPU Stack: input, 2*pi, input. 115080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen { 115180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label no_exceptions; 115280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fwait(); 115380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fnstsw_ax(); 115480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Clear if Illegal Operand or Zero Division exceptions are set. 115580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(rax, Immediate(5)); // #IO and #ZD flags of FPU status word. 115680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &no_exceptions); 115780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fnclex(); 115880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&no_exceptions); 115980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 116080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 116180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Compute st(0) % st(1) 116280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen { 11630d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel partial_remainder_loop; 116480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&partial_remainder_loop); 116580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fprem1(); 116680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fwait(); 116780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fnstsw_ax(); 116880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(rax, Immediate(0x400)); // Check C2 bit of FPU status word. 116980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If C2 is set, computation only has partial result. Loop to 117080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // continue computation. 117180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &partial_remainder_loop); 117280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 117380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // FPU Stack: input, 2*pi, input % 2*pi 117480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fstp(2); 117580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // FPU Stack: input % 2*pi, 2*pi, 117680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fstp(0); 117780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // FPU Stack: input % 2*pi 117880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&in_range); 117980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (type_) { 118080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case TranscendentalCache::SIN: 118180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fsin(); 118280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 118380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case TranscendentalCache::COS: 118480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ fcos(); 118580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 118680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: 118780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen UNREACHABLE(); 118880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 118980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&done); 119080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 119180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 119280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 119380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// Get the integer part of a heap number. 119480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// Overwrites the contents of rdi, rbx and rcx. Result cannot be rdi or rbx. 119580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid IntegerConvert(MacroAssembler* masm, 119680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register result, 119780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register source) { 119880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Result may be rcx. If result and source are the same register, source will 119980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // be overwritten. 120080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(!result.is(rdi) && !result.is(rbx)); 120180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // TODO(lrn): When type info reaches here, if value is a 32-bit integer, use 120280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // cvttsd2si (32-bit version) directly. 120380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register double_exponent = rbx; 120480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register double_value = rdi; 12050d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel done, exponent_63_plus; 120680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get double and extract exponent. 120780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(double_value, FieldOperand(source, HeapNumber::kValueOffset)); 120880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Clear result preemptively, in case we need to return zero. 120980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(result, result); 121080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(xmm0, double_value); // Save copy in xmm0 in case we need it there. 121180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Double to remove sign bit, shift exponent down to least significant bits. 121280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // and subtract bias to get the unshifted, unbiased exponent. 121380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(double_exponent, Operand(double_value, double_value, times_1, 0)); 121480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shr(double_exponent, Immediate(64 - HeapNumber::kExponentBits)); 121580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ subl(double_exponent, Immediate(HeapNumber::kExponentBias)); 121680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check whether the exponent is too big for a 63 bit unsigned integer. 121780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(double_exponent, Immediate(63)); 121880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, &exponent_63_plus); 121980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Handle exponent range 0..62. 122080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cvttsd2siq(result, xmm0); 122180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&done); 122280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 122380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&exponent_63_plus); 122480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Exponent negative or 63+. 122580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(double_exponent, Immediate(83)); 122680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If exponent negative or above 83, number contains no significant bits in 122780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the range 0..2^31, so result is zero, and rcx already holds zero. 122880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above, &done); 122980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 123080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Exponent in rage 63..83. 123180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Mantissa * 2^exponent contains bits in the range 2^0..2^31, namely 123280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the least significant exponent-52 bits. 123380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 123480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Negate low bits of mantissa if value is negative. 123580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(double_value, double_value); // Move sign bit to carry. 123680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ sbbl(result, result); // And convert carry to -1 in result register. 123780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // if scratch2 is negative, do (scratch2-1)^-1, otherwise (scratch2-0)^0. 123880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addl(double_value, result); 123980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Do xor in opposite directions depending on where we want the result 124080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // (depending on whether result is rcx or not). 124180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 124280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (result.is(rcx)) { 124380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(double_value, result); 124480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Left shift mantissa by (exponent - mantissabits - 1) to save the 124580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // bits that have positional values below 2^32 (the extra -1 comes from the 124680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // doubling done above to move the sign bit into the carry flag). 124780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ leal(rcx, Operand(double_exponent, -HeapNumber::kMantissaBits - 1)); 124880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shll_cl(double_value); 124980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(result, double_value); 125080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 125180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // As the then-branch, but move double-value to result before shifting. 125280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(result, double_value); 125380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ leal(rcx, Operand(double_exponent, -HeapNumber::kMantissaBits - 1)); 125480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shll_cl(result); 125580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 125680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 125780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&done); 125880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 125980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 126080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 126180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// Input: rdx, rax are the left and right objects of a bit op. 126280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// Output: rax, rcx are left and right integers for a bit op. 126380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid FloatingPointHelper::LoadNumbersAsIntegers(MacroAssembler* masm) { 126480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check float operands. 126580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label done; 126680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label rax_is_smi; 126780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label rax_is_object; 126880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label rdx_is_object; 126980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 127080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rdx, &rdx_is_object); 127180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rdx, rdx); 127280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rax, &rax_is_smi); 127380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 127480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&rax_is_object); 127580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen IntegerConvert(masm, rcx, rax); // Uses rdi, rcx and rbx. 127680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&done); 127780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 127880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&rdx_is_object); 127980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen IntegerConvert(masm, rdx, rdx); // Uses rdi, rcx and rbx. 128080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rax, &rax_is_object); 128180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&rax_is_smi); 128280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rcx, rax); 128380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 128480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&done); 128580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rax, rdx); 128680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 128780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 128880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 128980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// Input: rdx, rax are the left and right objects of a bit op. 129080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// Output: rax, rcx are left and right integers for a bit op. 129180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid FloatingPointHelper::LoadAsIntegers(MacroAssembler* masm, 129280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label* conversion_failure, 129380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register heap_number_map) { 129480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check float operands. 129580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label arg1_is_object, check_undefined_arg1; 129680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label arg2_is_object, check_undefined_arg2; 129780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label load_arg2, done; 129880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 129980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rdx, &arg1_is_object); 130080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rdx, rdx); 130180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&load_arg2); 130280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 130380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the argument is undefined it converts to zero (ECMA-262, section 9.5). 130480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&check_undefined_arg1); 130580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(rdx, Heap::kUndefinedValueRootIndex); 130680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, conversion_failure); 130780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rdx, Immediate(0)); 130880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&load_arg2); 130980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 131080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&arg1_is_object); 131180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(FieldOperand(rdx, HeapObject::kMapOffset), heap_number_map); 131280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &check_undefined_arg1); 131380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the untagged integer version of the edx heap number in rcx. 131480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen IntegerConvert(masm, rdx, rdx); 131580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 131680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Here rdx has the untagged integer, rax has a Smi or a heap number. 131780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&load_arg2); 131880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Test if arg2 is a Smi. 131980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rax, &arg2_is_object); 132080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rax, rax); 132180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rcx, rax); 132280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&done); 132380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 132480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the argument is undefined it converts to zero (ECMA-262, section 9.5). 132580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&check_undefined_arg2); 132680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(rax, Heap::kUndefinedValueRootIndex); 132780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, conversion_failure); 132880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rcx, Immediate(0)); 132980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&done); 133080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 133180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&arg2_is_object); 133280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(FieldOperand(rax, HeapObject::kMapOffset), heap_number_map); 133380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &check_undefined_arg2); 133480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the untagged integer version of the rax heap number in rcx. 133580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen IntegerConvert(masm, rcx, rax); 133680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&done); 133780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rax, rdx); 133880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 133980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 134080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 134180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid FloatingPointHelper::LoadSSE2SmiOperands(MacroAssembler* masm) { 134280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(kScratchRegister, rdx); 134380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cvtlsi2sd(xmm0, kScratchRegister); 134480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(kScratchRegister, rax); 134580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cvtlsi2sd(xmm1, kScratchRegister); 134680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 134780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 134880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 134980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid FloatingPointHelper::LoadSSE2NumberOperands(MacroAssembler* masm) { 135080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label load_smi_rdx, load_nonsmi_rax, load_smi_rax, done; 135180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load operand in rdx into xmm0. 135280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rdx, &load_smi_rdx); 135380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset)); 135480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load operand in rax into xmm1. 135580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rax, &load_smi_rax); 135680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&load_nonsmi_rax); 135780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movsd(xmm1, FieldOperand(rax, HeapNumber::kValueOffset)); 135880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&done); 135980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 136080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&load_smi_rdx); 136180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(kScratchRegister, rdx); 136280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cvtlsi2sd(xmm0, kScratchRegister); 136380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rax, &load_nonsmi_rax); 136480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 136580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&load_smi_rax); 136680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(kScratchRegister, rax); 136780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cvtlsi2sd(xmm1, kScratchRegister); 136880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 136980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&done); 137080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 137180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 137280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 137380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid FloatingPointHelper::LoadSSE2UnknownOperands(MacroAssembler* masm, 137480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label* not_numbers) { 137580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label load_smi_rdx, load_nonsmi_rax, load_smi_rax, load_float_rax, done; 137680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load operand in rdx into xmm0, or branch to not_numbers. 137780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(rcx, Heap::kHeapNumberMapRootIndex); 137880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rdx, &load_smi_rdx); 137980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(FieldOperand(rdx, HeapObject::kMapOffset), rcx); 138080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, not_numbers); // Argument in rdx is not a number. 138180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset)); 138280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load operand in rax into xmm1, or branch to not_numbers. 138380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rax, &load_smi_rax); 138480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 138580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&load_nonsmi_rax); 138680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(FieldOperand(rax, HeapObject::kMapOffset), rcx); 138780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, not_numbers); 138880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movsd(xmm1, FieldOperand(rax, HeapNumber::kValueOffset)); 138980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&done); 139080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 139180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&load_smi_rdx); 139280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(kScratchRegister, rdx); 139380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cvtlsi2sd(xmm0, kScratchRegister); 139480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rax, &load_nonsmi_rax); 139580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 139680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&load_smi_rax); 139780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(kScratchRegister, rax); 139880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cvtlsi2sd(xmm1, kScratchRegister); 139980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&done); 140080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 140180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 140280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 140380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid GenericUnaryOpStub::Generate(MacroAssembler* masm) { 140480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label slow, done; 140580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 140680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (op_ == Token::SUB) { 14070d5e116f6aee03185f237311a943491bb079a768Kristian Monsen if (include_smi_code_) { 14080d5e116f6aee03185f237311a943491bb079a768Kristian Monsen // Check whether the value is a smi. 14090d5e116f6aee03185f237311a943491bb079a768Kristian Monsen Label try_float; 14100d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ JumpIfNotSmi(rax, &try_float); 14110d5e116f6aee03185f237311a943491bb079a768Kristian Monsen if (negative_zero_ == kIgnoreNegativeZero) { 14120d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ SmiCompare(rax, Smi::FromInt(0)); 14130d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ j(equal, &done); 14140d5e116f6aee03185f237311a943491bb079a768Kristian Monsen } 14150d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ SmiNeg(rax, rax, &done); 1416f87a203d89e1bbb6708282e0b64dbd13d59b723dBen Murdoch __ jmp(&slow); // zero, if not handled above, and Smi::kMinValue. 14170d5e116f6aee03185f237311a943491bb079a768Kristian Monsen 14180d5e116f6aee03185f237311a943491bb079a768Kristian Monsen // Try floating point case. 14190d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ bind(&try_float); 14200d5e116f6aee03185f237311a943491bb079a768Kristian Monsen } else if (FLAG_debug_code) { 14210d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ AbortIfSmi(rax); 142280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 142380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 142480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, FieldOperand(rax, HeapObject::kMapOffset)); 142580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(rdx, Heap::kHeapNumberMapRootIndex); 142680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &slow); 142780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Operand is a float, negate its value by flipping sign bit. 142880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, FieldOperand(rax, HeapNumber::kValueOffset)); 142980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, Immediate(0x01)); 143080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shl(kScratchRegister, Immediate(63)); 143180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xor_(rdx, kScratchRegister); // Flip sign. 143280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx is value to store. 143380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (overwrite_ == UNARY_OVERWRITE) { 143480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, HeapNumber::kValueOffset), rdx); 143580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 143680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateHeapNumber(rcx, rbx, &slow); 143780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: allocated 'empty' number 143880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rcx, HeapNumber::kValueOffset), rdx); 143980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rcx); 144080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 144180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else if (op_ == Token::BIT_NOT) { 14420d5e116f6aee03185f237311a943491bb079a768Kristian Monsen if (include_smi_code_) { 14430d5e116f6aee03185f237311a943491bb079a768Kristian Monsen Label try_float; 14440d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ JumpIfNotSmi(rax, &try_float); 14450d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ SmiNot(rax, rax); 14460d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ jmp(&done); 14470d5e116f6aee03185f237311a943491bb079a768Kristian Monsen // Try floating point case. 14480d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ bind(&try_float); 14490d5e116f6aee03185f237311a943491bb079a768Kristian Monsen } else if (FLAG_debug_code) { 14500d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ AbortIfSmi(rax); 14510d5e116f6aee03185f237311a943491bb079a768Kristian Monsen } 14520d5e116f6aee03185f237311a943491bb079a768Kristian Monsen 145380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if the operand is a heap number. 145480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, FieldOperand(rax, HeapObject::kMapOffset)); 145580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(rdx, Heap::kHeapNumberMapRootIndex); 145680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &slow); 145780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 145880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Convert the heap number in rax to an untagged integer in rcx. 145980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen IntegerConvert(masm, rax, rax); 146080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 146180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Do the bitwise operation and smi tag the result. 146280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ notl(rax); 146380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Integer32ToSmi(rax, rax); 146480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 146580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 146680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return from the stub. 146780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&done); 146880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ StubReturn(1); 146980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 147080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Handle the slow case by jumping to the JavaScript builtin. 147180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&slow); 147280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rcx); // pop return address 147380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rax); 147480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rcx); // push return address 147580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (op_) { 147680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::SUB: 147780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::UNARY_MINUS, JUMP_FUNCTION); 147880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 147980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case Token::BIT_NOT: 148080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::BIT_NOT, JUMP_FUNCTION); 148180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen break; 148280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: 148380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen UNREACHABLE(); 148480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 148580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 148680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 148780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 148880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) { 148980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The key is in rdx and the parameter count is in rax. 149080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 149180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The displacement is used for skipping the frame pointer on the 149280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // stack. It is the offset of the last parameter (if any) relative 149380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // to the frame pointer. 149480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static const int kDisplacement = 1 * kPointerSize; 149580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 149680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the key is a smi. 149780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label slow; 149880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rdx, &slow); 149980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 150080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if the calling frame is an arguments adaptor frame. 150180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label adaptor; 150280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, Operand(rbp, StandardFrameConstants::kCallerFPOffset)); 150380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiCompare(Operand(rbx, StandardFrameConstants::kContextOffset), 150480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); 150580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &adaptor); 150680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 150780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check index against formal parameters count limit passed in 150880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // through register rax. Use unsigned comparison to get negative 150980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // check for free. 151080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rdx, rax); 151180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, &slow); 151280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 151380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Read the argument from the stack and return it. 151480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SmiIndex index = masm->SmiToIndex(rax, rax, kPointerSizeLog2); 151580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rbx, Operand(rbp, index.reg, index.scale, 0)); 151680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen index = masm->SmiToNegativeIndex(rdx, rdx, kPointerSizeLog2); 151780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rbx, index.reg, index.scale, kDisplacement)); 151880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Ret(); 151980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 152080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Arguments adaptor case: Check index against actual arguments 152180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // limit found in the arguments adaptor frame. Use unsigned 152280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // comparison to get negative check for free. 152380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&adaptor); 152480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, Operand(rbx, ArgumentsAdaptorFrameConstants::kLengthOffset)); 152580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rdx, rcx); 152680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, &slow); 152780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 152880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Read the argument from the stack and return it. 152980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen index = masm->SmiToIndex(rax, rcx, kPointerSizeLog2); 153080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rbx, Operand(rbx, index.reg, index.scale, 0)); 153180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen index = masm->SmiToNegativeIndex(rdx, rdx, kPointerSizeLog2); 153280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rbx, index.reg, index.scale, kDisplacement)); 153380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Ret(); 153480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 153580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Slow-case: Handle non-smi or out-of-bounds access to arguments 153680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // by calling the runtime system. 153780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&slow); 153880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rbx); // Return address. 153980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rdx); 154080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rbx); 154180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kGetArgumentsProperty, 1, 1); 154280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 154380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 154480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 154580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid ArgumentsAccessStub::GenerateNewObject(MacroAssembler* masm) { 154680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[0] : return address 154780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[8] : number of parameters 154880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[16] : receiver displacement 154980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[24] : function 155080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 155180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The displacement is used for skipping the return address and the 155280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // frame pointer on the stack. It is the offset of the last 155380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // parameter (if any) relative to the frame pointer. 155480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static const int kDisplacement = 2 * kPointerSize; 155580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 155680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if the calling frame is an arguments adaptor frame. 155780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label adaptor_frame, try_allocate, runtime; 155880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, Operand(rbp, StandardFrameConstants::kCallerFPOffset)); 155980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiCompare(Operand(rdx, StandardFrameConstants::kContextOffset), 156080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); 156180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &adaptor_frame); 156280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 156380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the length from the frame. 156480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rcx, Operand(rsp, 1 * kPointerSize)); 156580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&try_allocate); 156680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 156780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Patch the arguments.length and the parameters pointer. 156880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&adaptor_frame); 156980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rcx, 157080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Operand(rdx, 157180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ArgumentsAdaptorFrameConstants::kLengthOffset)); 157280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Space on stack must already hold a smi. 157380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Integer32ToSmiField(Operand(rsp, 1 * kPointerSize), rcx); 157480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Do not clobber the length index for the indexing operation since 157580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // it is used compute the size for allocation later. 157680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rdx, Operand(rdx, rcx, times_pointer_size, kDisplacement)); 157780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rsp, 2 * kPointerSize), rdx); 157880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 157980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Try the new space allocation. Start out with computing the size of 158080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the arguments object and the elements array. 158180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label add_arguments_object; 158280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&try_allocate); 158380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(rcx, rcx); 158480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &add_arguments_object); 158580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ leal(rcx, Operand(rcx, times_pointer_size, FixedArray::kHeaderSize)); 158680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&add_arguments_object); 158780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addl(rcx, Immediate(Heap::kArgumentsObjectSize)); 158880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 158980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Do the allocation of both objects in one go. 159080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateInNewSpace(rcx, rax, rdx, rbx, &runtime, TAG_OBJECT); 159180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 159280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the arguments boilerplate from the current (global) context. 159380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen int offset = Context::SlotOffset(Context::ARGUMENTS_BOILERPLATE_INDEX); 159480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdi, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); 159580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdi, FieldOperand(rdi, GlobalObject::kGlobalContextOffset)); 159680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdi, Operand(rdi, offset)); 159780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 159880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Copy the JS object part. 159980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(JSObject::kHeaderSize == 3 * kPointerSize); 160080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, FieldOperand(rdi, 0 * kPointerSize)); 160180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, FieldOperand(rdi, 1 * kPointerSize)); 160280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, FieldOperand(rdi, 2 * kPointerSize)); 160380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, 0 * kPointerSize), kScratchRegister); 160480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, 1 * kPointerSize), rdx); 160580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, 2 * kPointerSize), rbx); 160680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 160780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Setup the callee in-object property. 160880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(Heap::arguments_callee_index == 0); 160980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, Operand(rsp, 3 * kPointerSize)); 161080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSObject::kHeaderSize), kScratchRegister); 161180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 161280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the length (smi tagged) and set that as an in-object property too. 161380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(Heap::arguments_length_index == 1); 161480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, Operand(rsp, 1 * kPointerSize)); 161580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSObject::kHeaderSize + kPointerSize), rcx); 161680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 161780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If there are no actual arguments, we're done. 161880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label done; 161980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiTest(rcx); 162080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &done); 162180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 162280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the parameters pointer from the stack and untag the length. 162380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, Operand(rsp, 2 * kPointerSize)); 162480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 162580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Setup the elements pointer in the allocated arguments object and 162680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // initialize the header in the elements fixed array. 162780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rdi, Operand(rax, Heap::kArgumentsObjectSize)); 162880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rax, JSObject::kElementsOffset), rdi); 162980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(kScratchRegister, Heap::kFixedArrayMapRootIndex); 163080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rdi, FixedArray::kMapOffset), kScratchRegister); 163180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rdi, FixedArray::kLengthOffset), rcx); 163280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rcx, rcx); // Untag length for the loop below. 163380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 163480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Copy the fixed array slots. 163580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label loop; 163680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&loop); 163780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, Operand(rdx, -1 * kPointerSize)); // Skip receiver. 163880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rdi, FixedArray::kHeaderSize), kScratchRegister); 163980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rdi, Immediate(kPointerSize)); 164080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ subq(rdx, Immediate(kPointerSize)); 164180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ decl(rcx); 164280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &loop); 164380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 164480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return and remove the on-stack parameters. 164580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&done); 164680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(3 * kPointerSize); 164780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 164880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Do the runtime call to allocate the arguments object. 164980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&runtime); 165080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kNewArgumentsFast, 3, 1); 165180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 165280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 165380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 165480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid RegExpExecStub::Generate(MacroAssembler* masm) { 165580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Just jump directly to runtime if native RegExp is not selected at compile 165680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // time or if regexp entry in generated code is turned off runtime switch or 165780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // at compilation. 165880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef V8_INTERPRETED_REGEXP 165980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kRegExpExec, 4, 1); 166080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#else // V8_INTERPRETED_REGEXP 166180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!FLAG_regexp_entry_native) { 166280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kRegExpExec, 4, 1); 166380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen return; 166480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 166580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 166680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Stack frame on entry. 166780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // esp[0]: return address 166880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // esp[8]: last_match_info (expected JSArray) 166980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // esp[16]: previous index 167080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // esp[24]: subject string 167180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // esp[32]: JSRegExp object 167280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 167380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static const int kLastMatchInfoOffset = 1 * kPointerSize; 167480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static const int kPreviousIndexOffset = 2 * kPointerSize; 167580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static const int kSubjectOffset = 3 * kPointerSize; 167680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static const int kJSRegExpOffset = 4 * kPointerSize; 167780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 167880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label runtime; 167980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 168080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Ensure that a RegExp stack is allocated. 168180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference address_of_regexp_stack_memory_address = 168280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference::address_of_regexp_stack_memory_address(); 168380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference address_of_regexp_stack_memory_size = 168480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference::address_of_regexp_stack_memory_size(); 168580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, address_of_regexp_stack_memory_size); 168680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, Operand(kScratchRegister, 0)); 168780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testq(kScratchRegister, kScratchRegister); 168880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &runtime); 168980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 169080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 169180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the first argument is a JSRegExp object. 169280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kJSRegExpOffset)); 169380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rax, &runtime); 169480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rax, JS_REGEXP_TYPE, kScratchRegister); 169580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &runtime); 169680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the RegExp has been compiled (data contains a fixed array). 169780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, FieldOperand(rax, JSRegExp::kDataOffset)); 169880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (FLAG_debug_code) { 169980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Condition is_smi = masm->CheckSmi(rcx); 170080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Check(NegateCondition(is_smi), 170180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen "Unexpected type for RegExp data, FixedArray expected"); 170280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rcx, FIXED_ARRAY_TYPE, kScratchRegister); 170380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Check(equal, "Unexpected type for RegExp data, FixedArray expected"); 170480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 170580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 170680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: RegExp data (FixedArray) 170780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check the type of the RegExp. Only continue if type is JSRegExp::IRREGEXP. 170880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rbx, FieldOperand(rcx, JSRegExp::kDataTagOffset)); 170980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(rbx, Immediate(JSRegExp::IRREGEXP)); 171080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &runtime); 171180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 171280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: RegExp data (FixedArray) 171380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the number of captures fit in the static offsets vector buffer. 171480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rdx, 171580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FieldOperand(rcx, JSRegExp::kIrregexpCaptureCountOffset)); 171680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Calculate number of capture registers (number_of_captures + 1) * 2. 171780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ leal(rdx, Operand(rdx, rdx, times_1, 2)); 171880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the static offsets vector buffer is large enough. 171980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(rdx, Immediate(OffsetsVector::kStaticOffsetsVectorSize)); 172080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above, &runtime); 172180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 172280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: RegExp data (FixedArray) 172380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: Number of capture registers 172480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the second argument is a string. 172580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kSubjectOffset)); 172680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rax, &runtime); 172780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Condition is_string = masm->IsObjectStringType(rax, rbx, rbx); 172880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(NegateCondition(is_string), &runtime); 172980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 173080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: Subject string. 173180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: RegExp data (FixedArray). 173280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: Number of capture registers. 173380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the third argument is a positive smi less than the string 173480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // length. A negative value will be greater (unsigned comparison). 173580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, Operand(rsp, kPreviousIndexOffset)); 173680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(rbx, &runtime); 173780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiCompare(rbx, FieldOperand(rax, String::kLengthOffset)); 173880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, &runtime); 173980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 174080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: RegExp data (FixedArray) 174180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: Number of capture registers 174280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the fourth object is a JSArray object. 174380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kLastMatchInfoOffset)); 174480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rax, &runtime); 174580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rax, JS_ARRAY_TYPE, kScratchRegister); 174680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &runtime); 174780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the JSArray is in fast case. 174880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, FieldOperand(rax, JSArray::kElementsOffset)); 174980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, FieldOperand(rbx, HeapObject::kMapOffset)); 175080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Cmp(rax, Factory::fixed_array_map()); 175180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &runtime); 175280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the last match info has space for the capture registers and the 175380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // additional information. Ensure no overflow in add. 175480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(FixedArray::kMaxLength < kMaxInt - FixedArray::kLengthOffset); 175580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rax, FieldOperand(rbx, FixedArray::kLengthOffset)); 175680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addl(rdx, Immediate(RegExpImpl::kLastMatchOverhead)); 175780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(rdx, rax); 175880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(greater, &runtime); 175980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 176080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: RegExp data (FixedArray) 176180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check the representation and encoding of the subject string. 17620d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel seq_ascii_string, seq_two_byte_string, check_code; 176380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kSubjectOffset)); 176480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, FieldOperand(rax, HeapObject::kMapOffset)); 176580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbl(rbx, FieldOperand(rbx, Map::kInstanceTypeOffset)); 176680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // First check for flat two byte string. 176780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ andb(rbx, Immediate( 176880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask)); 176980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT((kStringTag | kSeqStringTag | kTwoByteStringTag) == 0); 177080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &seq_two_byte_string); 177180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Any other flat string must be a flat ascii string. 177280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(rbx, Immediate(kIsNotStringMask | kStringRepresentationMask)); 177380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &seq_ascii_string); 177480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 177580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check for flat cons string. 177680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // A flat cons string is a cons string where the second part is the empty 177780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // string. In that case the subject string is just the first part of the cons 177880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // string. Also in this case the first part of the cons string is known to be 177980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // a sequential string or an external string. 178080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kExternalStringTag !=0); 178180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT((kConsStringTag & kExternalStringTag) == 0); 178280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(rbx, Immediate(kIsNotStringMask | kExternalStringTag)); 178380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &runtime); 178480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // String is a cons string. 178580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, FieldOperand(rax, ConsString::kSecondOffset)); 178680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Cmp(rdx, Factory::empty_string()); 178780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &runtime); 178880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, FieldOperand(rax, ConsString::kFirstOffset)); 178980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, FieldOperand(rax, HeapObject::kMapOffset)); 179080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // String is a cons string with empty second part. 179180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: first part of cons string. 179280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: map of first part of cons string. 179380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Is first part a flat two byte string? 179480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(FieldOperand(rbx, Map::kInstanceTypeOffset), 179580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Immediate(kStringRepresentationMask | kStringEncodingMask)); 179680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT((kSeqStringTag | kTwoByteStringTag) == 0); 179780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &seq_two_byte_string); 179880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Any other flat string must be ascii. 179980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(FieldOperand(rbx, Map::kInstanceTypeOffset), 180080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Immediate(kStringRepresentationMask)); 180180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &runtime); 180280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 180380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&seq_ascii_string); 180480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: subject string (sequential ascii) 180580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: RegExp data (FixedArray) 180680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(r11, FieldOperand(rcx, JSRegExp::kDataAsciiCodeOffset)); 180780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rdi, 1); // Type is ascii. 180880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&check_code); 180980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 181080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&seq_two_byte_string); 181180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: subject string (flat two-byte) 181280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: RegExp data (FixedArray) 181380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(r11, FieldOperand(rcx, JSRegExp::kDataUC16CodeOffset)); 181480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rdi, 0); // Type is two byte. 181580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 181680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&check_code); 181780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the irregexp code has been generated for the actual string 181880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // encoding. If it has, the field contains a code object otherwise it contains 181980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the hole. 182080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(r11, CODE_TYPE, kScratchRegister); 182180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &runtime); 182280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 182380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: subject string 182480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdi: encoding of subject string (1 if ascii, 0 if two_byte); 182580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r11: code 182680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load used arguments before starting to push arguments for call to native 182780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // RegExp code to avoid handling changing stack height. 182880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger64(rbx, Operand(rsp, kPreviousIndexOffset)); 182980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 183080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: subject string 183180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: previous index 183280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdi: encoding of subject string (1 if ascii 0 if two_byte); 183380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r11: code 183480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // All checks done. Now push arguments for native regexp code. 183580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::regexp_entry_native, 1); 183680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 183780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsi is caller save on Windows and used to pass parameter on Linux. 183880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rsi); 183980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 184080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static const int kRegExpExecuteArguments = 7; 184180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ PrepareCallCFunction(kRegExpExecuteArguments); 184280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen int argument_slots_on_stack = 184380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen masm->ArgumentStackSlotsForCFunctionCall(kRegExpExecuteArguments); 184480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 184580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Argument 7: Indicate that this is a direct call from JavaScript. 184680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rsp, (argument_slots_on_stack - 1) * kPointerSize), 184780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Immediate(1)); 184880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 184980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Argument 6: Start (high end) of backtracking stack memory area. 185080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, address_of_regexp_stack_memory_address); 185180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(r9, Operand(kScratchRegister, 0)); 185280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, address_of_regexp_stack_memory_size); 185380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(r9, Operand(kScratchRegister, 0)); 185480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Argument 6 passed in r9 on Linux and on the stack on Windows. 185580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef _WIN64 185680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rsp, (argument_slots_on_stack - 2) * kPointerSize), r9); 185780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 185880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 185980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Argument 5: static offsets vector buffer. 186080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(r8, ExternalReference::address_of_static_offsets_vector()); 186180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Argument 5 passed in r8 on Linux and on the stack on Windows. 186280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef _WIN64 186380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rsp, (argument_slots_on_stack - 3) * kPointerSize), r8); 186480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 186580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 186680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // First four arguments are passed in registers on both Linux and Windows. 186780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef _WIN64 186880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register arg4 = r9; 186980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register arg3 = r8; 187080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register arg2 = rdx; 187180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register arg1 = rcx; 187280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#else 187380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register arg4 = rcx; 187480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register arg3 = rdx; 187580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register arg2 = rsi; 187680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register arg1 = rdi; 187780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 187880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 187980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Keep track on aliasing between argX defined above and the registers used. 188080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: subject string 188180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: previous index 188280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdi: encoding of subject string (1 if ascii 0 if two_byte); 188380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r11: code 188480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 188580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Argument 4: End of string data 188680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Argument 3: Start of string data 18870d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel setup_two_byte, setup_rest; 188880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(rdi, rdi); 188980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &setup_two_byte); 189080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rdi, FieldOperand(rax, String::kLengthOffset)); 189180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(arg4, FieldOperand(rax, rdi, times_1, SeqAsciiString::kHeaderSize)); 189280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(arg3, FieldOperand(rax, rbx, times_1, SeqAsciiString::kHeaderSize)); 189380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&setup_rest); 189480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&setup_two_byte); 189580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rdi, FieldOperand(rax, String::kLengthOffset)); 189680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(arg4, FieldOperand(rax, rdi, times_2, SeqTwoByteString::kHeaderSize)); 189780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(arg3, FieldOperand(rax, rbx, times_2, SeqTwoByteString::kHeaderSize)); 189880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 189980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&setup_rest); 190080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Argument 2: Previous index. 190180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(arg2, rbx); 190280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 190380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Argument 1: Subject string. 190480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(arg1, rax); 190580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 190680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Locate the code entry and call it. 190780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(r11, Immediate(Code::kHeaderSize - kHeapObjectTag)); 190880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CallCFunction(r11, kRegExpExecuteArguments); 190980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 191080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsi is caller save, as it is used to pass parameter. 191180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rsi); 191280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 191380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check the result. 19140d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel success; 191580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(rax, Immediate(NativeRegExpMacroAssembler::SUCCESS)); 191680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &success); 19170d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel failure; 191880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(rax, Immediate(NativeRegExpMacroAssembler::FAILURE)); 191980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &failure); 192080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(rax, Immediate(NativeRegExpMacroAssembler::EXCEPTION)); 192180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If not exception it can only be retry. Handle that in the runtime system. 192280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &runtime); 192380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Result must now be exception. If there is no pending exception already a 192480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // stack overflow (on the backtrack stack) was detected in RegExp code but 192580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // haven't created the exception yet. Handle that in the runtime system. 192680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // TODO(592): Rerunning the RegExp to get the stack overflow exception. 192780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference pending_exception_address(Top::k_pending_exception_address); 192880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, pending_exception_address); 192980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Cmp(kScratchRegister, Factory::the_hole_value()); 193080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &runtime); 193180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&failure); 193280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // For failure and exception return null. 193380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(rax, Factory::null_value()); 193480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(4 * kPointerSize); 193580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 193680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load RegExp data. 193780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&success); 193880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kJSRegExpOffset)); 193980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, FieldOperand(rax, JSRegExp::kDataOffset)); 194080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rax, 194180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FieldOperand(rcx, JSRegExp::kIrregexpCaptureCountOffset)); 194280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Calculate number of capture registers (number_of_captures + 1) * 2. 194380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ leal(rdx, Operand(rax, rax, times_1, 2)); 194480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 194580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: Number of capture registers 194680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load last_match_info which is still known to be a fast case JSArray. 194780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kLastMatchInfoOffset)); 194880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, FieldOperand(rax, JSArray::kElementsOffset)); 194980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 195080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: last_match_info backing store (FixedArray) 195180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: number of capture registers 195280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Store the capture count. 195380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Integer32ToSmi(kScratchRegister, rdx); 195480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rbx, RegExpImpl::kLastCaptureCountOffset), 195580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen kScratchRegister); 195680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Store last subject and last input. 195780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kSubjectOffset)); 195880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rbx, RegExpImpl::kLastSubjectOffset), rax); 195980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, rbx); 196080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ RecordWrite(rcx, RegExpImpl::kLastSubjectOffset, rax, rdi); 196180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kSubjectOffset)); 196280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rbx, RegExpImpl::kLastInputOffset), rax); 196380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, rbx); 196480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ RecordWrite(rcx, RegExpImpl::kLastInputOffset, rax, rdi); 196580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 196680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the static offsets vector filled by the native regexp code. 196780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, ExternalReference::address_of_static_offsets_vector()); 196880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 196980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: last_match_info backing store (FixedArray) 197080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: offsets vector 197180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: number of capture registers 19720d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel next_capture, done; 197380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Capture register counter starts from number of capture registers and 197480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // counts down until wraping after zero. 197580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&next_capture); 197680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ subq(rdx, Immediate(1)); 197780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(negative, &done); 197880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Read the value from the static offsets vector buffer and make it a smi. 197980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rdi, Operand(rcx, rdx, times_int_size, 0)); 19800d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ Integer32ToSmi(rdi, rdi); 198180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Store the smi value in the last match info. 198280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rbx, 198380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rdx, 198480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen times_pointer_size, 198580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen RegExpImpl::kFirstCaptureOffset), 198680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rdi); 198780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&next_capture); 198880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&done); 198980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 199080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return last match info. 199180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kLastMatchInfoOffset)); 199280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(4 * kPointerSize); 199380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 199480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Do the runtime call to execute the regexp. 199580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&runtime); 199680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kRegExpExec, 4, 1); 199780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif // V8_INTERPRETED_REGEXP 199880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 199980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 200080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 200180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid NumberToStringStub::GenerateLookupNumberStringCache(MacroAssembler* masm, 200280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register object, 200380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register result, 200480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch1, 200580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch2, 200680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen bool object_is_smi, 200780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label* not_found) { 200880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Use of registers. Register result is used as a temporary. 200980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register number_string_cache = result; 201080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register mask = scratch1; 201180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch = scratch2; 201280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 201380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load the number string cache. 201480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(number_string_cache, Heap::kNumberStringCacheRootIndex); 201580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 201680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Make the hash mask from the length of the number string cache. It 201780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // contains two elements (number and string) for each cache entry. 201880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32( 201980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen mask, FieldOperand(number_string_cache, FixedArray::kLengthOffset)); 202080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shrl(mask, Immediate(1)); 202180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ subq(mask, Immediate(1)); // Make mask. 202280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 202380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Calculate the entry in the number string cache. The hash value in the 202480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // number string cache for smis is just the smi value, and the hash for 202580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // doubles is the xor of the upper and lower words. See 202680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Heap::GetNumberStringCache. 202780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label is_smi; 202880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label load_result_from_cache; 202980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!object_is_smi) { 203080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(object, &is_smi); 203180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CheckMap(object, Factory::heap_number_map(), not_found, true); 203280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 203380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(8 == kDoubleSize); 203480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(scratch, FieldOperand(object, HeapNumber::kValueOffset + 4)); 203580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xor_(scratch, FieldOperand(object, HeapNumber::kValueOffset)); 203680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateConvertHashCodeToIndex(masm, scratch, mask); 203780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 203880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register index = scratch; 203980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register probe = mask; 204080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(probe, 204180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FieldOperand(number_string_cache, 204280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen index, 204380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen times_1, 204480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FixedArray::kHeaderSize)); 204580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(probe, not_found); 204680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(CpuFeatures::IsSupported(SSE2)); 204780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen CpuFeatures::Scope fscope(SSE2); 204880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movsd(xmm0, FieldOperand(object, HeapNumber::kValueOffset)); 204980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movsd(xmm1, FieldOperand(probe, HeapNumber::kValueOffset)); 205080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ucomisd(xmm0, xmm1); 205180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(parity_even, not_found); // Bail out if NaN is involved. 205280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, not_found); // The cache did not contain this value. 205380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&load_result_from_cache); 205480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 205580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 205680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&is_smi); 205780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(scratch, object); 205880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateConvertHashCodeToIndex(masm, scratch, mask); 205980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 206080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register index = scratch; 206180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if the entry is the smi we are looking for. 206280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(object, 206380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FieldOperand(number_string_cache, 206480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen index, 206580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen times_1, 206680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FixedArray::kHeaderSize)); 206780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, not_found); 206880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 206980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the result from the cache. 207080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&load_result_from_cache); 207180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(result, 207280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FieldOperand(number_string_cache, 207380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen index, 207480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen times_1, 207580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FixedArray::kHeaderSize + kPointerSize)); 207680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::number_to_string_native, 1); 207780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 207880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 207980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 208080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid NumberToStringStub::GenerateConvertHashCodeToIndex(MacroAssembler* masm, 208180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register hash, 208280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register mask) { 208380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ and_(hash, mask); 208480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Each entry in string cache consists of two pointer sized fields, 208580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // but times_twice_pointer_size (multiplication by 16) scale factor 208680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // is not supported by addrmode on x64 platform. 208780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // So we have to premultiply entry index before lookup. 208880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shl(hash, Immediate(kPointerSizeLog2 + 1)); 208980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 209080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 209180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 209280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid NumberToStringStub::Generate(MacroAssembler* masm) { 209380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label runtime; 209480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 209580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, Operand(rsp, kPointerSize)); 209680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 209780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Generate code to lookup number in the number string cache. 209880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateLookupNumberStringCache(masm, rbx, rax, r8, r9, false, &runtime); 209980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(1 * kPointerSize); 210080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 210180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&runtime); 210280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Handle number to string in the runtime system if not found in the cache. 210380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kNumberToStringSkipCache, 1, 1); 210480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 210580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 210680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 210780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenstatic int NegativeComparisonResult(Condition cc) { 210880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(cc != equal); 210980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT((cc == less) || (cc == less_equal) 211080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen || (cc == greater) || (cc == greater_equal)); 211180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen return (cc == greater || cc == greater_equal) ? LESS : GREATER; 211280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 211380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 211480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 211580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid CompareStub::Generate(MacroAssembler* masm) { 211680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(lhs_.is(no_reg) && rhs_.is(no_reg)); 211780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 211880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label check_unequal_objects, done; 21190d5e116f6aee03185f237311a943491bb079a768Kristian Monsen 21200d5e116f6aee03185f237311a943491bb079a768Kristian Monsen // Compare two smis if required. 21210d5e116f6aee03185f237311a943491bb079a768Kristian Monsen if (include_smi_compare_) { 21220d5e116f6aee03185f237311a943491bb079a768Kristian Monsen Label non_smi, smi_done; 21230d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ JumpIfNotBothSmi(rax, rdx, &non_smi); 21240d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ subq(rdx, rax); 21250d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ j(no_overflow, &smi_done); 2126f87a203d89e1bbb6708282e0b64dbd13d59b723dBen Murdoch __ not_(rdx); // Correct sign in case of overflow. rdx cannot be 0 here. 21270d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ bind(&smi_done); 21280d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ movq(rax, rdx); 21290d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ ret(0); 21300d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ bind(&non_smi); 21310d5e116f6aee03185f237311a943491bb079a768Kristian Monsen } else if (FLAG_debug_code) { 21320d5e116f6aee03185f237311a943491bb079a768Kristian Monsen Label ok; 21330d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ JumpIfNotSmi(rdx, &ok); 21340d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ JumpIfNotSmi(rax, &ok); 21350d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ Abort("CompareStub: smi operands"); 21360d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ bind(&ok); 21370d5e116f6aee03185f237311a943491bb079a768Kristian Monsen } 21380d5e116f6aee03185f237311a943491bb079a768Kristian Monsen 213980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The compare stub returns a positive, negative, or zero 64-bit integer 214080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // value in rax, corresponding to result of comparing the two inputs. 214180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // NOTICE! This code is only reached after a smi-fast-case check, so 214280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // it is certain that at least one operand isn't a smi. 214380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 214480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Two identical objects are equal unless they are both NaN or undefined. 214580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen { 21460d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel not_identical; 214780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rax, rdx); 214880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, ¬_identical); 214980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 215080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (cc_ != equal) { 215180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check for undefined. undefined OP undefined is false even though 215280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // undefined == undefined. 21530d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel check_for_nan; 215480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(rdx, Heap::kUndefinedValueRootIndex); 215580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &check_for_nan); 215680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rax, NegativeComparisonResult(cc_)); 215780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 215880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&check_for_nan); 215980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 216080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 216180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Test for NaN. Sadly, we can't just compare to Factory::nan_value(), 216280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // so we do the second best thing - test it ourselves. 216380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Note: if cc_ != equal, never_nan_nan_ is not used. 216480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // We cannot set rax to EQUAL until just before return because 216580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax must be unchanged on jump to not_identical. 216680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 216780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (never_nan_nan_ && (cc_ == equal)) { 216880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rax, EQUAL); 216980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 217080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 21710d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel heap_number; 217280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If it's not a heap number, then return equal for (in)equality operator. 217380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Cmp(FieldOperand(rdx, HeapObject::kMapOffset), 217480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Factory::heap_number_map()); 217580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &heap_number); 217680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (cc_ != equal) { 217780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call runtime on identical JSObjects. Otherwise return equal. 217880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rax, FIRST_JS_OBJECT_TYPE, rcx); 217980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, ¬_identical); 218080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 218180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rax, EQUAL); 218280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 218380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 218480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&heap_number); 218580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // It is a heap number, so return equal if it's not NaN. 218680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // For NaN, return 1 for every condition except greater and 218780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // greater-equal. Return -1 for them, so the comparison yields 218880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // false for all conditions except not-equal. 218980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rax, EQUAL); 219080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset)); 219180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ucomisd(xmm0, xmm0); 219280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ setcc(parity_even, rax); 219380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax is 0 for equal non-NaN heapnumbers, 1 for NaNs. 219480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (cc_ == greater_equal || cc_ == greater) { 219580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ neg(rax); 219680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 219780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 219880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 219980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 220080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_identical); 220180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 220280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 220380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (cc_ == equal) { // Both strict and non-strict. 220480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label slow; // Fallthrough label. 220580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 220680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If we're doing a strict equality comparison, we don't have to do 220780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // type conversion, so we generate code to do fast comparison for objects 220880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // and oddballs. Non-smi numbers and strings still go through the usual 220980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // slow-case code. 221080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (strict_) { 221180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If either is a Smi (we know that not both are), then they can only 221280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // be equal if the other is a HeapNumber. If so, use the slow case. 221380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen { 221480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label not_smis; 221580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SelectNonSmi(rbx, rax, rdx, ¬_smis); 221680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 221780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if the non-smi operand is a heap number. 221880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Cmp(FieldOperand(rbx, HeapObject::kMapOffset), 221980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Factory::heap_number_map()); 222080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If heap number, handle it in the slow case. 222180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &slow); 222280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return non-equal. ebx (the lower half of rbx) is not zero. 222380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rbx); 222480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 222580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 222680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_smis); 222780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 222880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 222980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If either operand is a JSObject or an oddball value, then they are not 223080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // equal since their pointers are different 223180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // There is no test for undetectability in strict equality. 223280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 223380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the first object is a JS object, we have done pointer comparison. 223480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(LAST_TYPE == JS_FUNCTION_TYPE); 22350d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel first_non_object; 223680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rax, FIRST_JS_OBJECT_TYPE, rcx); 223780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(below, &first_non_object); 223880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return non-zero (eax (not rax) is not zero) 223980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label return_not_equal; 224080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kHeapObjectTag != 0); 224180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&return_not_equal); 224280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 224380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 224480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&first_non_object); 224580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check for oddballs: true, false, null, undefined. 224680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpInstanceType(rcx, ODDBALL_TYPE); 224780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &return_not_equal); 224880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 224980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rdx, FIRST_JS_OBJECT_TYPE, rcx); 225080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, &return_not_equal); 225180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 225280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check for oddballs: true, false, null, undefined. 225380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpInstanceType(rcx, ODDBALL_TYPE); 225480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &return_not_equal); 225580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 225680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fall through to the general case. 225780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 225880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&slow); 225980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 226080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 226180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Generate the number comparison code. 226280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (include_number_compare_) { 226380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label non_number_comparison; 22640d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel unordered; 226580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FloatingPointHelper::LoadSSE2UnknownOperands(masm, &non_number_comparison); 226680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(rax, rax); 226780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(rcx, rcx); 226880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ucomisd(xmm0, xmm1); 226980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 227080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Don't base result on EFLAGS when a NaN is involved. 227180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(parity_even, &unordered); 227280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return a result of -1, 0, or 1, based on EFLAGS. 227380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ setcc(above, rax); 227480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ setcc(below, rcx); 227580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ subq(rax, rcx); 227680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 227780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 227880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If one of the numbers was NaN, then the result is always false. 227980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The cc is never not-equal. 228080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&unordered); 228180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(cc_ != not_equal); 228280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (cc_ == less || cc_ == less_equal) { 228380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rax, 1); 228480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 228580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rax, -1); 228680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 228780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 228880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 228980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The number comparison code did not provide a valid result. 229080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&non_number_comparison); 229180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 229280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 229380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fast negative check for symbol-to-symbol equality. 229480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label check_for_strings; 229580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (cc_ == equal) { 229680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen BranchIfNonSymbol(masm, &check_for_strings, rax, kScratchRegister); 229780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen BranchIfNonSymbol(masm, &check_for_strings, rdx, kScratchRegister); 229880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 229980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // We've already checked for object identity, so if both operands 230080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // are symbols they aren't equal. Register eax (not rax) already holds a 230180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // non-zero value, which indicates not equal, so just return. 230280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 230380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 230480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 230580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&check_for_strings); 230680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 230780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotBothSequentialAsciiStrings( 230880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rdx, rax, rcx, rbx, &check_unequal_objects); 230980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 231080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Inline comparison of ascii strings. 231180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StringCompareStub::GenerateCompareFlatAsciiStrings(masm, 231280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rdx, 231380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rax, 231480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rcx, 231580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rbx, 231680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen rdi, 231780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen r8); 231880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 231980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef DEBUG 232080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Abort("Unexpected fall-through from string comparison"); 232180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 232280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 232380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&check_unequal_objects); 232480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (cc_ == equal && !strict_) { 232580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Not strict equality. Objects are unequal if 232680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // they are both JSObjects and not undetectable, 232780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // and their pointers are different. 23280d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel not_both_objects, return_unequal; 232980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // At most one is a smi, so we can test for smi by adding the two. 233080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // A smi plus a heap object has the low bit set, a heap object plus 233180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // a heap object has the low bit clear. 233280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kSmiTag == 0); 233380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kSmiTagMask == 1); 233480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rcx, Operand(rax, rdx, times_1, 0)); 233580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(rcx, Immediate(kSmiTagMask)); 233680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, ¬_both_objects); 233780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rax, FIRST_JS_OBJECT_TYPE, rbx); 233880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(below, ¬_both_objects); 233980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rdx, FIRST_JS_OBJECT_TYPE, rcx); 234080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(below, ¬_both_objects); 234180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(FieldOperand(rbx, Map::kBitFieldOffset), 234280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Immediate(1 << Map::kIsUndetectable)); 234380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &return_unequal); 234480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(FieldOperand(rcx, Map::kBitFieldOffset), 234580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Immediate(1 << Map::kIsUndetectable)); 234680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &return_unequal); 234780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The objects are both undetectable, so they both compare as the value 234880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // undefined, and are equal. 234980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rax, EQUAL); 235080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&return_unequal); 235180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return non-equal by returning the non-zero object pointer in eax, 235280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // or return equal if we fell through to here. 235380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 235480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_both_objects); 235580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 235680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 235780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Push arguments below the return address to prepare jump to builtin. 235880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rcx); 235980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rdx); 236080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rax); 236180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 236280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Figure out which native to call and setup the arguments. 236380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Builtins::JavaScript builtin; 236480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (cc_ == equal) { 236580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen builtin = strict_ ? Builtins::STRICT_EQUALS : Builtins::EQUALS; 236680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 236780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen builtin = Builtins::COMPARE; 236880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Push(Smi::FromInt(NegativeComparisonResult(cc_))); 236980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 237080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 237180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Restore return address on the stack. 237280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rcx); 237380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 237480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call the native; it returns -1 (less), 0 (equal), or 1 (greater) 237580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // tagged as a small integer. 237680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(builtin, JUMP_FUNCTION); 237780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 237880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 237980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 238080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid CompareStub::BranchIfNonSymbol(MacroAssembler* masm, 238180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label* label, 238280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register object, 238380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch) { 238480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(object, label); 238580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(scratch, FieldOperand(object, HeapObject::kMapOffset)); 238680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbq(scratch, 238780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FieldOperand(scratch, Map::kInstanceTypeOffset)); 238880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Ensure that no non-strings have the symbol bit set. 238980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(LAST_TYPE < kNotStringTag + kIsSymbolMask); 239080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kSymbolTag != 0); 239180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(scratch, Immediate(kIsSymbolMask)); 239280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, label); 239380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 239480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 239580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 239680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StackCheckStub::Generate(MacroAssembler* masm) { 2397f87a203d89e1bbb6708282e0b64dbd13d59b723dBen Murdoch __ TailCallRuntime(Runtime::kStackGuard, 0, 1); 239880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 239980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 240080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 240180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid CallFunctionStub::Generate(MacroAssembler* masm) { 240280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label slow; 240380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 240480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the receiver might be a value (string, number or boolean) check for this 240580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // and box it if it is. 240680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (ReceiverMightBeValue()) { 240780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the receiver from the stack. 240880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // +1 ~ return address 240980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label receiver_is_value, receiver_is_js_object; 241080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, (argc_ + 1) * kPointerSize)); 241180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 241280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if receiver is a smi (which is a number value). 241380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rax, &receiver_is_value); 241480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 241580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if the receiver is a valid JS object. 241680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rax, FIRST_JS_OBJECT_TYPE, rdi); 241780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, &receiver_is_js_object); 241880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 241980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call the runtime to box the value. 242080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&receiver_is_value); 242180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ EnterInternalFrame(); 242280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rax); 242380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); 242480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LeaveInternalFrame(); 242580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rsp, (argc_ + 1) * kPointerSize), rax); 242680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 242780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&receiver_is_js_object); 242880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 242980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 243080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the function to call from the stack. 243180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // +2 ~ receiver, return address 243280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdi, Operand(rsp, (argc_ + 2) * kPointerSize)); 243380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 243480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the function really is a JavaScript function. 243580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rdi, &slow); 243680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Goto slow case if we do not have a function. 243780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx); 243880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &slow); 243980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 244080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fast-case: Just invoke the function. 244180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ParameterCount actual(argc_); 244280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeFunction(rdi, actual, JUMP_FUNCTION); 244380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 244480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Slow-case: Non-function called. 244580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&slow); 244680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // CALL_NON_FUNCTION expects the non-function callee as receiver (instead 244780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // of the original receiver from the call site). 244880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rsp, (argc_ + 1) * kPointerSize), rdi); 244980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rax, argc_); 245080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rbx, 0); 245180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ GetBuiltinEntry(rdx, Builtins::CALL_NON_FUNCTION); 245280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Handle<Code> adaptor(Builtins::builtin(Builtins::ArgumentsAdaptorTrampoline)); 245380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Jump(adaptor, RelocInfo::CODE_TARGET); 245480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 245580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 245680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 245780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid CEntryStub::GenerateThrowTOS(MacroAssembler* masm) { 245880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that stack should contain next handler, frame pointer, state and 245980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // return address in that order. 246080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(StackHandlerConstants::kFPOffset + kPointerSize == 246180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StackHandlerConstants::kStateOffset); 246280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(StackHandlerConstants::kStateOffset + kPointerSize == 246380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StackHandlerConstants::kPCOffset); 246480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 246580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference handler_address(Top::k_handler_address); 246680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, handler_address); 246780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsp, Operand(kScratchRegister, 0)); 246880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // get next in chain 246980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rcx); 247080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(kScratchRegister, 0), rcx); 247180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rbp); // pop frame pointer 247280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rdx); // remove state 247380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 247480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Before returning we restore the context from the frame pointer if not NULL. 247580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The frame pointer is NULL in the exception handler of a JS entry frame. 247680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xor_(rsi, rsi); // tentatively set context pointer to NULL 24770d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel skip; 247880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rbp, Immediate(0)); 247980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &skip); 248080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); 248180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&skip); 248280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 248380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 248480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 248580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 248680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid ApiGetterEntryStub::Generate(MacroAssembler* masm) { 248780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label empty_result; 248880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label prologue; 248980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label promote_scheduled_exception; 249080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ EnterApiExitFrame(kStackSpace, 0); 249180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT_EQ(kArgc, 4); 249280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef _WIN64 249380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // All the parameters should be set up by a caller. 249480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#else 249580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Set 1st parameter register with property name. 249680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsi, rdx); 249780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Second parameter register rdi should be set with pointer to AccessorInfo 249880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // by a caller. 249980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 250080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call the api function! 250180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, 250280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen reinterpret_cast<int64_t>(fun()->address()), 250380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen RelocInfo::RUNTIME_ENTRY); 250480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ call(rax); 250580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if the function scheduled an exception. 250680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference scheduled_exception_address = 250780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference::scheduled_exception_address(); 250880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsi, scheduled_exception_address); 250980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Cmp(Operand(rsi, 0), Factory::the_hole_value()); 251080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &promote_scheduled_exception); 251180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef _WIN64 251280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax keeps a pointer to v8::Handle, unpack it. 251380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rax, 0)); 251480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 251580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if the result handle holds 0. 251680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testq(rax, rax); 251780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &empty_result); 251880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // It was non-zero. Dereference to get the result value. 251980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rax, 0)); 252080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&prologue); 252180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LeaveExitFrame(); 252280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 252380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&promote_scheduled_exception); 252480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kPromoteScheduledException, 0, 1); 252580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&empty_result); 252680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // It was zero; the result is undefined. 252780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(rax, Factory::undefined_value()); 252880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&prologue); 252980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 253080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 253180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 253280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid CEntryStub::GenerateCore(MacroAssembler* masm, 253380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label* throw_normal_exception, 253480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label* throw_termination_exception, 253580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label* throw_out_of_memory_exception, 253680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen bool do_gc, 253780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen bool always_allocate_scope, 253880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen int /* alignment_skew */) { 253980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: result parameter for PerformGC, if any. 254080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: pointer to C function (C callee-saved). 254180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbp: frame pointer (restored after C call). 254280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp: stack pointer (restored after C call). 254380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r14: number of arguments including receiver (C callee-saved). 254480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r12: pointer to the first argument (C callee-saved). 254580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // This pointer is reused in LeaveExitFrame(), so it is stored in a 254680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // callee-saved register. 254780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 254880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Simple results returned in rax (both AMD64 and Win64 calling conventions). 254980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Complex results must be written to address passed as first argument. 255080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // AMD64 calling convention: a struct of two pointers in rax+rdx 255180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 255280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check stack alignment. 255380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (FLAG_debug_code) { 255480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CheckStackAlignment(); 255580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 255680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 255780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (do_gc) { 255880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Pass failure code returned from last attempt as first argument to 255980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // PerformGC. No need to use PrepareCallCFunction/CallCFunction here as the 256080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // stack is known to be aligned. This function takes one argument which is 256180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // passed in register. 256280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef _WIN64 256380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, rax); 256480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#else // _WIN64 256580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdi, rax); 256680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 256780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, 256880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FUNCTION_ADDR(Runtime::PerformGC), 256980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen RelocInfo::RUNTIME_ENTRY); 257080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ call(kScratchRegister); 257180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 257280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 257380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference scope_depth = 257480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference::heap_always_allocate_scope_depth(); 257580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (always_allocate_scope) { 257680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, scope_depth); 257780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ incl(Operand(kScratchRegister, 0)); 257880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 257980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 258080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call C function. 258180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef _WIN64 258280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Windows 64-bit ABI passes arguments in rcx, rdx, r8, r9 258380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Store Arguments object on stack, below the 4 WIN64 ABI parameter slots. 258480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rsp, 4 * kPointerSize), r14); // argc. 258580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(rsp, 5 * kPointerSize), r12); // argv. 258680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (result_size_ < 2) { 258780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Pass a pointer to the Arguments object as the first argument. 258880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Return result in single register (rax). 258980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rcx, Operand(rsp, 4 * kPointerSize)); 259080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 259180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT_EQ(2, result_size_); 259280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Pass a pointer to the result location as the first argument. 259380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rcx, Operand(rsp, 6 * kPointerSize)); 259480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Pass a pointer to the Arguments object as the second argument. 259580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rdx, Operand(rsp, 4 * kPointerSize)); 259680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 259780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 259880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#else // _WIN64 259980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // GCC passes arguments in rdi, rsi, rdx, rcx, r8, r9. 260080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdi, r14); // argc. 260180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsi, r12); // argv. 260280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 260380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ call(rbx); 260480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Result is in rax - do not destroy this register! 260580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 260680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (always_allocate_scope) { 260780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, scope_depth); 260880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ decl(Operand(kScratchRegister, 0)); 260980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 261080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 261180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check for failure result. 261280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label failure_returned; 261380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(((kFailureTag + 1) & kFailureTagMask) == 0); 261480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef _WIN64 261580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If return value is on the stack, pop it to registers. 261680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (result_size_ > 1) { 261780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT_EQ(2, result_size_); 261880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Read result values stored on stack. Result is stored 261980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // above the four argument mirror slots and the two 262080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Arguments object slots. 262180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, 6 * kPointerSize)); 262280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, Operand(rsp, 7 * kPointerSize)); 262380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 262480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 262580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rcx, Operand(rax, 1)); 262680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Lower 2 bits of rcx are 0 iff rax has failure tag. 262780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(rcx, Immediate(kFailureTagMask)); 262880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &failure_returned); 262980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 263080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Exit the JavaScript to C++ exit frame. 263180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LeaveExitFrame(result_size_); 263280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 263380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 263480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Handling of failure. 263580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&failure_returned); 263680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 26370d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel retry; 263880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the returned exception is RETRY_AFTER_GC continue at retry label 263980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(Failure::RETRY_AFTER_GC == 0); 264080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(rax, Immediate(((1 << kFailureTypeTagSize) - 1) << kFailureTagSize)); 264180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &retry); 264280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 264380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Special handling of out of memory exceptions. 264480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, Failure::OutOfMemoryException(), RelocInfo::NONE); 264580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rax, kScratchRegister); 264680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, throw_out_of_memory_exception); 264780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 264880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Retrieve the pending exception and clear the variable. 264980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference pending_exception_address(Top::k_pending_exception_address); 265080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, pending_exception_address); 265180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(kScratchRegister, 0)); 265280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, ExternalReference::the_hole_value_location()); 265380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, Operand(rdx, 0)); 265480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(kScratchRegister, 0), rdx); 265580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 265680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Special handling of termination exceptions which are uncatchable 265780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // by javascript code. 265880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(rax, Heap::kTerminationExceptionRootIndex); 265980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, throw_termination_exception); 266080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 266180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Handle normal exception. 266280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(throw_normal_exception); 266380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 266480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Retry. 266580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&retry); 266680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 266780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 266880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 266980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid CEntryStub::GenerateThrowUncatchable(MacroAssembler* masm, 267080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen UncatchableExceptionType type) { 267180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fetch top stack handler. 267280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference handler_address(Top::k_handler_address); 267380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, handler_address); 267480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsp, Operand(kScratchRegister, 0)); 267580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 267680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Unwind the handlers until the ENTRY handler is found. 26770d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel loop, done; 267880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&loop); 267980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load the type of the current stack handler. 268080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const int kStateOffset = StackHandlerConstants::kStateOffset; 268180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(Operand(rsp, kStateOffset), Immediate(StackHandler::ENTRY)); 268280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &done); 268380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fetch the next handler in the list. 268480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const int kNextOffset = StackHandlerConstants::kNextOffset; 268580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsp, Operand(rsp, kNextOffset)); 268680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&loop); 268780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&done); 268880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 268980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Set the top handler address to next handler past the current ENTRY handler. 269080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, handler_address); 269180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(Operand(kScratchRegister, 0)); 269280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 269380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (type == OUT_OF_MEMORY) { 269480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Set external caught exception to false. 269580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference external_caught(Top::k_external_caught_exception_address); 269680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Immediate(false)); 269780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ store_rax(external_caught); 269880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 269980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Set pending exception and rax to out of memory exception. 270080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference pending_exception(Top::k_pending_exception_address); 270180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Failure::OutOfMemoryException(), RelocInfo::NONE); 270280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ store_rax(pending_exception); 270380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 270480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 270580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Clear the context pointer. 270680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xor_(rsi, rsi); 270780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 270880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Restore registers from handler. 270980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(StackHandlerConstants::kNextOffset + kPointerSize == 271080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StackHandlerConstants::kFPOffset); 271180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rbp); // FP 271280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(StackHandlerConstants::kFPOffset + kPointerSize == 271380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StackHandlerConstants::kStateOffset); 271480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rdx); // State 271580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 271680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(StackHandlerConstants::kStateOffset + kPointerSize == 271780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StackHandlerConstants::kPCOffset); 271880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 271980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 272080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 272180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 272280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid CEntryStub::Generate(MacroAssembler* masm) { 272380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: number of arguments including receiver 272480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: pointer to C function (C callee-saved) 272580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbp: frame pointer of calling JS frame (restored after C call) 272680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp: stack pointer (restored after C call) 272780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsi: current context (restored) 272880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 272980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // NOTE: Invocations of builtins may return failure objects 273080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // instead of a proper result. The builtin entry handles 273180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // this by performing a garbage collection and retrying the 273280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // builtin once. 273380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 273480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Enter the exit frame that transitions from JavaScript to C++. 273580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ EnterExitFrame(result_size_); 273680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 273780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: Holds the context at this point, but should not be used. 273880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // On entry to code generated by GenerateCore, it must hold 273980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // a failure result if the collect_garbage argument to GenerateCore 274080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // is true. This failure result can be the result of code 274180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // generated by a previous call to GenerateCore. The value 274280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // of rax is then passed to Runtime::PerformGC. 274380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: pointer to builtin function (C callee-saved). 274480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbp: frame pointer of exit frame (restored after C call). 274580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp: stack pointer (restored after C call). 274680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r14: number of arguments including receiver (C callee-saved). 274780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r12: argv pointer (C callee-saved). 274880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 274980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label throw_normal_exception; 275080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label throw_termination_exception; 275180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label throw_out_of_memory_exception; 275280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 275380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call into the runtime system. 275480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateCore(masm, 275580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &throw_normal_exception, 275680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &throw_termination_exception, 275780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &throw_out_of_memory_exception, 275880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen false, 275980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen false); 276080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 276180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Do space-specific GC and retry runtime call. 276280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateCore(masm, 276380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &throw_normal_exception, 276480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &throw_termination_exception, 276580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &throw_out_of_memory_exception, 276680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen true, 276780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen false); 276880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 276980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Do full GC and retry runtime call one final time. 277080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Failure* failure = Failure::InternalError(); 277180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, failure, RelocInfo::NONE); 277280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateCore(masm, 277380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &throw_normal_exception, 277480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &throw_termination_exception, 277580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &throw_out_of_memory_exception, 277680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen true, 277780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen true); 277880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 277980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&throw_out_of_memory_exception); 278080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateThrowUncatchable(masm, OUT_OF_MEMORY); 278180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 278280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&throw_termination_exception); 278380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateThrowUncatchable(masm, TERMINATION); 278480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 278580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&throw_normal_exception); 278680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateThrowTOS(masm); 278780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 278880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 278980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 279080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid JSEntryStub::GenerateBody(MacroAssembler* masm, bool is_construct) { 279180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label invoke, exit; 279280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef ENABLE_LOGGING_AND_PROFILING 279380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label not_outermost_js, not_outermost_js_2; 279480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 279580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 279680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Setup frame. 279780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rbp); 279880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbp, rsp); 279980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 280080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Push the stack frame type marker twice. 280180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen int marker = is_construct ? StackFrame::ENTRY_CONSTRUCT : StackFrame::ENTRY; 280280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Scratch register is neither callee-save, nor an argument register on any 280380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // platform. It's free to use at this point. 280480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Cannot use smi-register for loading yet. 280580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, 280680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen reinterpret_cast<uint64_t>(Smi::FromInt(marker)), 280780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen RelocInfo::NONE); 280880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(kScratchRegister); // context slot 280980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(kScratchRegister); // function slot 281080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Save callee-saved registers (X64/Win64 calling conventions). 281180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(r12); 281280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(r13); 281380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(r14); 281480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(r15); 281580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef _WIN64 281680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rdi); // Only callee save in Win64 ABI, argument in AMD64 ABI. 281780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rsi); // Only callee save in Win64 ABI, argument in AMD64 ABI. 281880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 281980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rbx); 282080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // TODO(X64): On Win64, if we ever use XMM6-XMM15, the low low 64 bits are 282180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // callee save as well. 282280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 282380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Save copies of the top frame descriptor on the stack. 282480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference c_entry_fp(Top::k_c_entry_fp_address); 282580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ load_rax(c_entry_fp); 282680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rax); 282780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 282880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Set up the roots and smi constant registers. 282980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Needs to be done before any further smi loads. 283080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference roots_address = ExternalReference::roots_address(); 283180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kRootRegister, roots_address); 283280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InitializeSmiConstantRegister(); 283380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 283480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef ENABLE_LOGGING_AND_PROFILING 283580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If this is the outermost JS call, set js_entry_sp value. 283680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference js_entry_sp(Top::k_js_entry_sp_address); 283780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ load_rax(js_entry_sp); 283880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testq(rax, rax); 283980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, ¬_outermost_js); 284080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rbp); 284180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ store_rax(js_entry_sp); 284280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_outermost_js); 284380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 284480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 284580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call a faked try-block that does the invoke. 284680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ call(&invoke); 284780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 284880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Caught exception: Store result (exception) in the pending 284980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // exception field in the JSEnv and return a failure sentinel. 285080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference pending_exception(Top::k_pending_exception_address); 285180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ store_rax(pending_exception); 285280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Failure::Exception(), RelocInfo::NONE); 285380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&exit); 285480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 285580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Invoke: Link this frame into the handler chain. 285680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&invoke); 285780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ PushTryHandler(IN_JS_ENTRY, JS_ENTRY_HANDLER); 285880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 285980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Clear any pending exceptions. 286080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ load_rax(ExternalReference::the_hole_value_location()); 286180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ store_rax(pending_exception); 286280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 286380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fake a receiver (NULL). 286480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(Immediate(0)); // receiver 286580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 286680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Invoke the function by calling through JS entry trampoline 286780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // builtin and pop the faked function when we return. We load the address 286880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // from an external reference instead of inlining the call target address 286980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // directly in the code, because the builtin stubs may not have been 287080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // generated yet at the time this code is generated. 287180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (is_construct) { 287280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference construct_entry(Builtins::JSConstructEntryTrampoline); 287380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ load_rax(construct_entry); 287480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 287580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ExternalReference entry(Builtins::JSEntryTrampoline); 287680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ load_rax(entry); 287780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 287880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(kScratchRegister, FieldOperand(rax, Code::kHeaderSize)); 287980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ call(kScratchRegister); 288080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 288180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Unlink this frame from the handler chain. 288280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, ExternalReference(Top::k_handler_address)); 288380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(Operand(kScratchRegister, 0)); 288480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Pop next_sp. 288580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rsp, Immediate(StackHandlerConstants::kSize - kPointerSize)); 288680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 288780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef ENABLE_LOGGING_AND_PROFILING 288880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If current EBP value is the same as js_entry_sp value, it means that 288980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the current function is the outermost. 289080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, js_entry_sp); 289180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rbp, Operand(kScratchRegister, 0)); 289280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, ¬_outermost_js_2); 289380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(Operand(kScratchRegister, 0), Immediate(0)); 289480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_outermost_js_2); 289580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 289680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 289780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Restore the top frame descriptor from the stack. 289880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&exit); 289980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(kScratchRegister, ExternalReference(Top::k_c_entry_fp_address)); 290080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(Operand(kScratchRegister, 0)); 290180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 290280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Restore callee-saved registers (X64 conventions). 290380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rbx); 290480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#ifdef _WIN64 290580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Callee save on in Win64 ABI, arguments/volatile in AMD64 ABI. 290680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rsi); 290780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rdi); 290880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif 290980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(r15); 291080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(r14); 291180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(r13); 291280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(r12); 291380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rsp, Immediate(2 * kPointerSize)); // remove markers 291480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 291580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Restore frame pointer and return. 291680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rbp); 291780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 291880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 291980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 292080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 292180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid InstanceofStub::Generate(MacroAssembler* masm) { 292280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Implements "value instanceof function" operator. 292380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Expected input state: 292480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[0] : return address 292580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[1] : function pointer 292680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[2] : value 292780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Returns a bitwise zero to indicate that the value 292880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // is and instance of the function and anything else to 292980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // indicate that the value is not an instance. 293080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 293180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the object - go slow case if it's a smi. 293280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label slow; 293380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, 2 * kPointerSize)); 293480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rax, &slow); 293580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 293680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the left hand is a JS object. Leave its map in rax. 293780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rax, FIRST_JS_OBJECT_TYPE, rax); 293880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(below, &slow); 293980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpInstanceType(rax, LAST_JS_OBJECT_TYPE); 294080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above, &slow); 294180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 294280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the prototype of the function. 294380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, Operand(rsp, 1 * kPointerSize)); 294480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx is function, rax is map. 294580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 294680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Look up the function and the map in the instanceof cache. 29470d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel miss; 294880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(rdx, Heap::kInstanceofCacheFunctionRootIndex); 294980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &miss); 295080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(rax, Heap::kInstanceofCacheMapRootIndex); 295180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &miss); 295280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(rax, Heap::kInstanceofCacheAnswerRootIndex); 295380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(2 * kPointerSize); 295480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 295580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&miss); 295680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TryGetFunctionPrototype(rdx, rbx, &slow); 295780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 295880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the function prototype is a JS object. 295980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(rbx, &slow); 296080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rbx, FIRST_JS_OBJECT_TYPE, kScratchRegister); 296180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(below, &slow); 296280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpInstanceType(kScratchRegister, LAST_JS_OBJECT_TYPE); 296380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above, &slow); 296480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 296580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Register mapping: 296680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax is object map. 296780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx is function. 296880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx is function prototype. 296980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ StoreRoot(rdx, Heap::kInstanceofCacheFunctionRootIndex); 297080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ StoreRoot(rax, Heap::kInstanceofCacheMapRootIndex); 297180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 297280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, FieldOperand(rax, Map::kPrototypeOffset)); 297380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 297480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Loop through the prototype chain looking for the function prototype. 29750d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel loop, is_instance, is_not_instance; 297680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(kScratchRegister, Heap::kNullValueRootIndex); 297780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&loop); 297880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rcx, rbx); 297980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &is_instance); 298080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rcx, kScratchRegister); 298180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The code at is_not_instance assumes that kScratchRegister contains a 298280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // non-zero GCable value (the null object in this case). 298380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &is_not_instance); 298480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, FieldOperand(rcx, HeapObject::kMapOffset)); 298580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, FieldOperand(rcx, Map::kPrototypeOffset)); 298680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&loop); 298780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 298880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&is_instance); 298980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(rax, rax); 299080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Store bitwise zero in the cache. This is a Smi in GC terms. 299180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kSmiTag == 0); 299280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ StoreRoot(rax, Heap::kInstanceofCacheAnswerRootIndex); 299380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(2 * kPointerSize); 299480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 299580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&is_not_instance); 299680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // We have to store a non-zero value in the cache. 299780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ StoreRoot(kScratchRegister, Heap::kInstanceofCacheAnswerRootIndex); 299880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(2 * kPointerSize); 299980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 300080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Slow-case: Go through the JavaScript implementation. 300180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&slow); 300280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ InvokeBuiltin(Builtins::INSTANCE_OF, JUMP_FUNCTION); 300380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 300480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 300580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 300680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenint CompareStub::MinorKey() { 300780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Encode the three parameters in a unique 16 bit value. To avoid duplicate 300880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // stubs the never NaN NaN condition is only taken into account if the 300980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // condition is equals. 301080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(static_cast<unsigned>(cc_) < (1 << 12)); 301180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(lhs_.is(no_reg) && rhs_.is(no_reg)); 301280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen return ConditionField::encode(static_cast<unsigned>(cc_)) 301380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen | RegisterField::encode(false) // lhs_ and rhs_ are not used 301480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen | StrictField::encode(strict_) 301580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen | NeverNanNanField::encode(cc_ == equal ? never_nan_nan_ : false) 30160d5e116f6aee03185f237311a943491bb079a768Kristian Monsen | IncludeNumberCompareField::encode(include_number_compare_) 30170d5e116f6aee03185f237311a943491bb079a768Kristian Monsen | IncludeSmiCompareField::encode(include_smi_compare_); 301880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 301980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 302080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 302180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// Unfortunately you have to run without snapshots to see most of these 302280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// names in the profile since most compare stubs end up in the snapshot. 302380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenconst char* CompareStub::GetName() { 302480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(lhs_.is(no_reg) && rhs_.is(no_reg)); 302580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 302680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (name_ != NULL) return name_; 302780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const int kMaxNameLength = 100; 302880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen name_ = Bootstrapper::AllocateAutoDeletedArray(kMaxNameLength); 302980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (name_ == NULL) return "OOM"; 303080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 303180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const char* cc_name; 303280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen switch (cc_) { 303380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case less: cc_name = "LT"; break; 303480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case greater: cc_name = "GT"; break; 303580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case less_equal: cc_name = "LE"; break; 303680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case greater_equal: cc_name = "GE"; break; 303780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case equal: cc_name = "EQ"; break; 303880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen case not_equal: cc_name = "NE"; break; 303980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen default: cc_name = "UnknownCondition"; break; 304080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 304180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 304280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const char* strict_name = ""; 304380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (strict_ && (cc_ == equal || cc_ == not_equal)) { 304480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen strict_name = "_STRICT"; 304580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 304680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 304780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const char* never_nan_nan_name = ""; 304880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (never_nan_nan_ && (cc_ == equal || cc_ == not_equal)) { 304980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen never_nan_nan_name = "_NO_NAN"; 305080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 305180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 305280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const char* include_number_compare_name = ""; 305380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!include_number_compare_) { 305480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen include_number_compare_name = "_NO_NUMBER"; 305580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 305680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 30570d5e116f6aee03185f237311a943491bb079a768Kristian Monsen const char* include_smi_compare_name = ""; 30580d5e116f6aee03185f237311a943491bb079a768Kristian Monsen if (!include_smi_compare_) { 30590d5e116f6aee03185f237311a943491bb079a768Kristian Monsen include_smi_compare_name = "_NO_SMI"; 30600d5e116f6aee03185f237311a943491bb079a768Kristian Monsen } 30610d5e116f6aee03185f237311a943491bb079a768Kristian Monsen 306280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen OS::SNPrintF(Vector<char>(name_, kMaxNameLength), 306380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen "CompareStub_%s%s%s%s", 306480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen cc_name, 306580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen strict_name, 306680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen never_nan_nan_name, 30670d5e116f6aee03185f237311a943491bb079a768Kristian Monsen include_number_compare_name, 30680d5e116f6aee03185f237311a943491bb079a768Kristian Monsen include_smi_compare_name); 306980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen return name_; 307080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 307180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 307280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 307380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// ------------------------------------------------------------------------- 307480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// StringCharCodeAtGenerator 307580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 307680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) { 307780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label flat_string; 307880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label ascii_string; 307980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label got_char_code; 308080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 308180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the receiver is a smi trigger the non-string case. 308280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfSmi(object_, receiver_not_string_); 308380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 308480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fetch the instance type of the receiver into result register. 308580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(result_, FieldOperand(object_, HeapObject::kMapOffset)); 308680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbl(result_, FieldOperand(result_, Map::kInstanceTypeOffset)); 308780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the receiver is not a string trigger the non-string case. 308880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(result_, Immediate(kIsNotStringMask)); 308980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, receiver_not_string_); 309080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 309180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the index is non-smi trigger the non-smi case. 309280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(index_, &index_not_smi_); 309380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 309480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Put smi-tagged index into scratch register. 309580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(scratch_, index_); 309680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&got_smi_index_); 309780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 309880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check for index out of range. 309980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiCompare(scratch_, FieldOperand(object_, String::kLengthOffset)); 310080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, index_out_of_range_); 310180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 310280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // We need special handling for non-flat strings. 310380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kSeqStringTag == 0); 310480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(result_, Immediate(kStringRepresentationMask)); 310580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &flat_string); 310680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 310780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Handle non-flat strings. 310880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(result_, Immediate(kIsConsStringMask)); 310980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &call_runtime_); 311080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 311180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // ConsString. 311280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check whether the right hand side is the empty string (i.e. if 311380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // this is really a flat string in a cons string). If that is not 311480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the case we would rather go to the runtime system now to flatten 311580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the string. 311680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(FieldOperand(object_, ConsString::kSecondOffset), 311780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Heap::kEmptyStringRootIndex); 311880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &call_runtime_); 311980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the first of the two strings and load its instance type. 312080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(object_, FieldOperand(object_, ConsString::kFirstOffset)); 312180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(result_, FieldOperand(object_, HeapObject::kMapOffset)); 312280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbl(result_, FieldOperand(result_, Map::kInstanceTypeOffset)); 312380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If the first cons component is also non-flat, then go to runtime. 312480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kSeqStringTag == 0); 312580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(result_, Immediate(kStringRepresentationMask)); 312680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &call_runtime_); 312780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 312880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check for 1-byte or 2-byte string. 312980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&flat_string); 313080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kAsciiStringTag != 0); 313180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(result_, Immediate(kStringEncodingMask)); 313280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &ascii_string); 313380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 313480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // 2-byte string. 313580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load the 2-byte character code into the result register. 313680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(scratch_, scratch_); 313780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxwl(result_, FieldOperand(object_, 313880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen scratch_, times_2, 313980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SeqTwoByteString::kHeaderSize)); 314080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&got_char_code); 314180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 314280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // ASCII string. 314380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load the byte into the result register. 314480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&ascii_string); 314580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(scratch_, scratch_); 314680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbl(result_, FieldOperand(object_, 314780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen scratch_, times_1, 314880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SeqAsciiString::kHeaderSize)); 314980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&got_char_code); 315080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Integer32ToSmi(result_, result_); 315180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&exit_); 315280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 315380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 315480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 315580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringCharCodeAtGenerator::GenerateSlow( 315680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen MacroAssembler* masm, const RuntimeCallHelper& call_helper) { 315780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Abort("Unexpected fallthrough to CharCodeAt slow case"); 315880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 315980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Index is not a smi. 316080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&index_not_smi_); 316180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If index is a heap number, try converting it to an integer. 316280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CheckMap(index_, Factory::heap_number_map(), index_not_number_, true); 316380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen call_helper.BeforeCall(masm); 316480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(object_); 316580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(index_); 316680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(index_); // Consumed by runtime conversion function. 316780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (index_flags_ == STRING_INDEX_IS_NUMBER) { 316880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CallRuntime(Runtime::kNumberToIntegerMapMinusZero, 1); 316980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 317080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(index_flags_ == STRING_INDEX_IS_ARRAY_INDEX); 317180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // NumberToSmi discards numbers that are not exact integers. 317280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CallRuntime(Runtime::kNumberToSmi, 1); 317380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 317480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!scratch_.is(rax)) { 317580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Save the conversion result before the pop instructions below 317680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // have a chance to overwrite it. 317780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(scratch_, rax); 317880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 317980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(index_); 318080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(object_); 318180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Reload the instance type. 318280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(result_, FieldOperand(object_, HeapObject::kMapOffset)); 318380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbl(result_, FieldOperand(result_, Map::kInstanceTypeOffset)); 318480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen call_helper.AfterCall(masm); 318580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If index is still not a smi, it must be out of range. 318680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(scratch_, index_out_of_range_); 318780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Otherwise, return to the fast path. 318880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&got_smi_index_); 318980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 319080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call runtime. We get here when the receiver is a string and the 319180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // index is a number, but the code of getting the actual character 319280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // is too complex (e.g., when the string needs to be flattened). 319380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&call_runtime_); 319480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen call_helper.BeforeCall(masm); 319580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(object_); 319680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(index_); 319780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CallRuntime(Runtime::kStringCharCodeAt, 2); 319880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!result_.is(rax)) { 319980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(result_, rax); 320080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 320180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen call_helper.AfterCall(masm); 320280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&exit_); 320380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 320480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Abort("Unexpected fallthrough from CharCodeAt slow case"); 320580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 320680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 320780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 320880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// ------------------------------------------------------------------------- 320980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// StringCharFromCodeGenerator 321080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 321180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringCharFromCodeGenerator::GenerateFast(MacroAssembler* masm) { 321280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fast case of Heap::LookupSingleCharacterStringFromCode. 321380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotSmi(code_, &slow_case_); 321480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiCompare(code_, Smi::FromInt(String::kMaxAsciiCharCode)); 321580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above, &slow_case_); 321680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 321780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(result_, Heap::kSingleCharacterStringCacheRootIndex); 321880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SmiIndex index = masm->SmiToIndex(kScratchRegister, code_, kPointerSizeLog2); 321980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(result_, FieldOperand(result_, index.reg, index.scale, 322080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FixedArray::kHeaderSize)); 322180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CompareRoot(result_, Heap::kUndefinedValueRootIndex); 322280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &slow_case_); 322380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&exit_); 322480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 322580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 322680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 322780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringCharFromCodeGenerator::GenerateSlow( 322880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen MacroAssembler* masm, const RuntimeCallHelper& call_helper) { 322980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Abort("Unexpected fallthrough to CharFromCode slow case"); 323080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 323180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&slow_case_); 323280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen call_helper.BeforeCall(masm); 323380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(code_); 323480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CallRuntime(Runtime::kCharFromCode, 1); 323580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!result_.is(rax)) { 323680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(result_, rax); 323780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 323880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen call_helper.AfterCall(masm); 323980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&exit_); 324080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 324180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Abort("Unexpected fallthrough from CharFromCode slow case"); 324280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 324380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 324480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 324580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// ------------------------------------------------------------------------- 324680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen// StringCharAtGenerator 324780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 324880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringCharAtGenerator::GenerateFast(MacroAssembler* masm) { 324980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen char_code_at_generator_.GenerateFast(masm); 325080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen char_from_code_generator_.GenerateFast(masm); 325180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 325280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 325380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 325480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringCharAtGenerator::GenerateSlow( 325580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen MacroAssembler* masm, const RuntimeCallHelper& call_helper) { 325680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen char_code_at_generator_.GenerateSlow(masm, call_helper); 325780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen char_from_code_generator_.GenerateSlow(masm, call_helper); 325880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 325980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 326080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 326180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringAddStub::Generate(MacroAssembler* masm) { 326280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label string_add_runtime; 326380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 326480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load the two arguments. 326580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, 2 * kPointerSize)); // First argument. 326680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, Operand(rsp, 1 * kPointerSize)); // Second argument. 326780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 326880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Make sure that both arguments are strings if not known in advance. 326980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (string_check_) { 327080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Condition is_smi; 327180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen is_smi = masm->CheckSmi(rax); 327280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(is_smi, &string_add_runtime); 327380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rax, FIRST_NONSTRING_TYPE, r8); 327480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, &string_add_runtime); 327580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 327680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // First argument is a a string, test second. 327780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen is_smi = masm->CheckSmi(rdx); 327880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(is_smi, &string_add_runtime); 327980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ CmpObjectType(rdx, FIRST_NONSTRING_TYPE, r9); 328080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above_equal, &string_add_runtime); 328180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 328280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 328380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Both arguments are strings. 328480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: first string 328580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: second string 328680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if either of the strings are empty. In that case return the other. 32870d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel second_not_zero_length, both_not_zero_length; 328880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, FieldOperand(rdx, String::kLengthOffset)); 328980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiTest(rcx); 329080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &second_not_zero_length); 329180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Second string is empty, result is first string which is already in rax. 329280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::string_add_native, 1); 329380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(2 * kPointerSize); 329480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&second_not_zero_length); 329580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, FieldOperand(rax, String::kLengthOffset)); 329680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiTest(rbx); 329780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &both_not_zero_length); 329880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // First string is empty, result is second string which is in rdx. 329980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rdx); 330080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::string_add_native, 1); 330180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(2 * kPointerSize); 330280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 330380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Both strings are non-empty. 330480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: first string 330580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: length of first string 330680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: length of second string 330780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: second string 330880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r8: map of first string if string check was performed above 330980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r9: map of second string if string check was performed above 331080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label string_add_flat_result, longer_than_two; 331180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&both_not_zero_length); 331280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 331380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If arguments where known to be strings, maps are not loaded to r8 and r9 331480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // by the code above. 331580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!string_check_) { 331680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(r8, FieldOperand(rax, HeapObject::kMapOffset)); 331780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(r9, FieldOperand(rdx, HeapObject::kMapOffset)); 331880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 331980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the instance types of the two strings as they will be needed soon. 332080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbl(r8, FieldOperand(r8, Map::kInstanceTypeOffset)); 332180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbl(r9, FieldOperand(r9, Map::kInstanceTypeOffset)); 332280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 332380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Look at the length of the result of adding the two strings. 332480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(String::kMaxLength <= Smi::kMaxValue / 2); 33250d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ SmiAdd(rbx, rbx, rcx); 332680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Use the runtime system when adding two one character strings, as it 332780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // contains optimizations for this specific case using the symbol table. 332880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiCompare(rbx, Smi::FromInt(2)); 332980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &longer_than_two); 333080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 333180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that both strings are non-external ascii strings. 333280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfBothInstanceTypesAreNotSequentialAscii(r8, r9, rbx, rcx, 333380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen &string_add_runtime); 333480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 333580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the two characters forming the sub string. 333680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbq(rbx, FieldOperand(rax, SeqAsciiString::kHeaderSize)); 333780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbq(rcx, FieldOperand(rdx, SeqAsciiString::kHeaderSize)); 333880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 333980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Try to lookup two character string in symbol table. If it is not found 334080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // just allocate a new one. 334180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label make_two_character_string, make_flat_ascii_string; 334280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StringHelper::GenerateTwoCharacterSymbolTableProbe( 334380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen masm, rbx, rcx, r14, r11, rdi, r12, &make_two_character_string); 334480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::string_add_native, 1); 334580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(2 * kPointerSize); 334680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 334780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&make_two_character_string); 334880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rbx, 2); 334980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&make_flat_ascii_string); 335080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 335180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&longer_than_two); 335280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if resulting string will be flat. 335380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiCompare(rbx, Smi::FromInt(String::kMinNonFlatLength)); 335480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(below, &string_add_flat_result); 335580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Handle exceptionally long strings in the runtime system. 335680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT((String::kMaxLength & 0x80000000) == 0); 335780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiCompare(rbx, Smi::FromInt(String::kMaxLength)); 335880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above, &string_add_runtime); 335980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 336080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If result is not supposed to be flat, allocate a cons string object. If 336180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // both strings are ascii the result is an ascii cons string. 336280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: first string 336380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: length of resulting flat string 336480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: second string 336580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r8: instance type of first string 336680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r9: instance type of second string 336780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label non_ascii, allocated, ascii_data; 336880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rcx, r8); 336980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ and_(rcx, r9); 337080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kStringEncodingMask == kAsciiStringTag); 337180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(rcx, Immediate(kAsciiStringTag)); 337280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &non_ascii); 337380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&ascii_data); 337480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Allocate an acsii cons string. 337580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateAsciiConsString(rcx, rdi, no_reg, &string_add_runtime); 337680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&allocated); 337780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Fill the fields of the cons string. 337880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rcx, ConsString::kLengthOffset), rbx); 337980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rcx, ConsString::kHashFieldOffset), 338080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Immediate(String::kEmptyHashField)); 338180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rcx, ConsString::kFirstOffset), rax); 338280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(FieldOperand(rcx, ConsString::kSecondOffset), rdx); 338380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rcx); 338480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::string_add_native, 1); 338580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(2 * kPointerSize); 338680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&non_ascii); 338780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // At least one of the strings is two-byte. Check whether it happens 338880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // to contain only ascii characters. 338980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: first instance type AND second instance type. 339080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r8: first instance type. 339180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r9: second instance type. 339280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testb(rcx, Immediate(kAsciiDataHintMask)); 339380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &ascii_data); 339480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xor_(r8, r9); 339580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kAsciiStringTag != 0 && kAsciiDataHintTag != 0); 339680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ andb(r8, Immediate(kAsciiStringTag | kAsciiDataHintTag)); 339780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpb(r8, Immediate(kAsciiStringTag | kAsciiDataHintTag)); 339880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &ascii_data); 339980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Allocate a two byte cons string. 340080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateConsString(rcx, rdi, no_reg, &string_add_runtime); 340180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(&allocated); 340280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 340380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Handle creating a flat result. First check that both strings are not 340480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // external strings. 340580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: first string 340680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: length of resulting flat string as smi 340780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: second string 340880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r8: instance type of first string 340980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r9: instance type of first string 341080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&string_add_flat_result); 341180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rbx, rbx); 341280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rcx, r8); 341380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ and_(rcx, Immediate(kStringRepresentationMask)); 341480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(rcx, Immediate(kExternalStringTag)); 341580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &string_add_runtime); 341680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(rcx, r9); 341780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ and_(rcx, Immediate(kStringRepresentationMask)); 341880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(rcx, Immediate(kExternalStringTag)); 341980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &string_add_runtime); 342080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Now check if both strings are ascii strings. 342180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: first string 342280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: length of resulting flat string 342380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: second string 342480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r8: instance type of first string 342580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r9: instance type of second string 342680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label non_ascii_string_add_flat_result; 342780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kStringEncodingMask == kAsciiStringTag); 342880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(r8, Immediate(kAsciiStringTag)); 342980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &non_ascii_string_add_flat_result); 343080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(r9, Immediate(kAsciiStringTag)); 343180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &string_add_runtime); 343280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 343380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&make_flat_ascii_string); 343480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Both strings are ascii strings. As they are short they are both flat. 343580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateAsciiString(rcx, rbx, rdi, r14, r11, &string_add_runtime); 343680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: result string 343780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, rcx); 343880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Locate first character of result. 343980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rcx, Immediate(SeqAsciiString::kHeaderSize - kHeapObjectTag)); 344080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Locate first character of first argument 344180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rdi, FieldOperand(rax, String::kLengthOffset)); 344280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rax, Immediate(SeqAsciiString::kHeaderSize - kHeapObjectTag)); 344380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: first char of first argument 344480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: result string 344580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: first character of result 344680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: second string 344780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdi: length of first argument 344880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StringHelper::GenerateCopyCharacters(masm, rcx, rax, rdi, true); 344980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Locate first character of second argument. 345080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rdi, FieldOperand(rdx, String::kLengthOffset)); 345180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rdx, Immediate(SeqAsciiString::kHeaderSize - kHeapObjectTag)); 345280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: result string 345380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: next character of result 345480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: first char of second argument 345580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdi: length of second argument 345680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StringHelper::GenerateCopyCharacters(masm, rcx, rdx, rdi, true); 345780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rbx); 345880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::string_add_native, 1); 345980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(2 * kPointerSize); 346080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 346180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Handle creating a flat two byte result. 346280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: first string - known to be two byte 346380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: length of resulting flat string 346480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: second string 346580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r8: instance type of first string 346680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // r9: instance type of first string 346780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&non_ascii_string_add_flat_result); 346880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ and_(r9, Immediate(kAsciiStringTag)); 346980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &string_add_runtime); 347080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Both strings are two byte strings. As they are short they are both 347180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // flat. 347280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateTwoByteString(rcx, rbx, rdi, r14, r11, &string_add_runtime); 347380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: result string 347480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, rcx); 347580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Locate first character of result. 347680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rcx, Immediate(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); 347780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Locate first character of first argument. 347880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rdi, FieldOperand(rax, String::kLengthOffset)); 347980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rax, Immediate(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); 348080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: first char of first argument 348180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: result string 348280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: first character of result 348380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: second argument 348480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdi: length of first argument 348580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StringHelper::GenerateCopyCharacters(masm, rcx, rax, rdi, false); 348680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Locate first character of second argument. 348780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rdi, FieldOperand(rdx, String::kLengthOffset)); 348880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rdx, Immediate(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); 348980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: result string 349080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: next character of result 349180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: first char of second argument 349280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdi: length of second argument 349380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StringHelper::GenerateCopyCharacters(masm, rcx, rdx, rdi, false); 349480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, rbx); 349580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::string_add_native, 1); 349680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(2 * kPointerSize); 349780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 349880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Just jump to runtime to add the two strings. 349980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&string_add_runtime); 350080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kStringAdd, 2, 1); 350180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 350280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 350380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 350480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringHelper::GenerateCopyCharacters(MacroAssembler* masm, 350580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register dest, 350680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register src, 350780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register count, 350880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen bool ascii) { 350980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label loop; 351080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&loop); 351180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // This loop just copies one character at a time, as it is only used for very 351280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // short strings. 351380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (ascii) { 351480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movb(kScratchRegister, Operand(src, 0)); 351580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movb(Operand(dest, 0), kScratchRegister); 351680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ incq(src); 351780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ incq(dest); 351880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } else { 351980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxwl(kScratchRegister, Operand(src, 0)); 352080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movw(Operand(dest, 0), kScratchRegister); 352180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(src, Immediate(2)); 352280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(dest, Immediate(2)); 352380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 352480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ decl(count); 352580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &loop); 352680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 352780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 352880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 352980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringHelper::GenerateCopyCharactersREP(MacroAssembler* masm, 353080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register dest, 353180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register src, 353280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register count, 353380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen bool ascii) { 353480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Copy characters using rep movs of doublewords. Align destination on 4 byte 353580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // boundary before starting rep movs. Copy remaining characters after running 353680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rep movs. 353780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Count is positive int32, dest and src are character pointers. 353880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(dest.is(rdi)); // rep movs destination 353980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(src.is(rsi)); // rep movs source 354080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen ASSERT(count.is(rcx)); // rep movs count 354180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 354280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Nothing to do for zero characters. 35430d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel done; 354480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(count, count); 354580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &done); 354680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 354780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Make count the number of bytes to copy. 354880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!ascii) { 354980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(2 == sizeof(uc16)); 355080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addl(count, count); 355180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 355280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 355380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Don't enter the rep movs if there are less than 4 bytes to copy. 35540d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel last_bytes; 355580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(count, Immediate(~7)); 355680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &last_bytes); 355780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 355880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Copy from edi to esi using rep movs instruction. 355980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(kScratchRegister, count); 356080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shr(count, Immediate(3)); // Number of doublewords to copy. 356180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ repmovsq(); 356280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 356380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Find number of bytes left. 356480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(count, kScratchRegister); 356580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ and_(count, Immediate(7)); 356680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 356780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if there are more bytes to copy. 356880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&last_bytes); 356980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(count, count); 357080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &done); 357180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 357280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Copy remaining characters. 357380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label loop; 357480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&loop); 357580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movb(kScratchRegister, Operand(src, 0)); 357680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movb(Operand(dest, 0), kScratchRegister); 357780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ incq(src); 357880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ incq(dest); 357980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ decl(count); 358080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &loop); 358180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 358280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&done); 358380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 358480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 358580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringHelper::GenerateTwoCharacterSymbolTableProbe(MacroAssembler* masm, 358680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register c1, 358780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register c2, 358880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch1, 358980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch2, 359080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch3, 359180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch4, 359280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label* not_found) { 359380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Register scratch3 is the general scratch register in this function. 359480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch = scratch3; 359580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 359680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Make sure that both characters are not digits as such strings has a 359780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // different hash algorithm. Don't try to look for these in the symbol table. 35980d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel not_array_index; 359980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ leal(scratch, Operand(c1, -'0')); 360080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(scratch, Immediate(static_cast<int>('9' - '0'))); 360180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(above, ¬_array_index); 360280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ leal(scratch, Operand(c2, -'0')); 360380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(scratch, Immediate(static_cast<int>('9' - '0'))); 360480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(below_equal, not_found); 360580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 360680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_array_index); 360780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Calculate the two character string hash. 360880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register hash = scratch1; 360980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateHashInit(masm, hash, c1, scratch); 361080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateHashAddCharacter(masm, hash, c2, scratch); 361180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateHashGetHash(masm, hash, scratch); 361280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 361380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Collect the two characters in a register. 361480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register chars = c1; 361580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shl(c2, Immediate(kBitsPerByte)); 361680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ orl(chars, c2); 361780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 361880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // chars: two character string, char 1 in byte 0 and char 2 in byte 1. 361980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // hash: hash of two character string. 362080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 362180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load the symbol table. 362280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register symbol_table = c2; 362380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(symbol_table, Heap::kSymbolTableRootIndex); 362480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 362580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Calculate capacity mask from the symbol table capacity. 362680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register mask = scratch2; 362780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(mask, 362880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FieldOperand(symbol_table, SymbolTable::kCapacityOffset)); 362980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ decl(mask); 363080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 363180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register undefined = scratch4; 363280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ LoadRoot(undefined, Heap::kUndefinedValueRootIndex); 363380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 363480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Registers 363580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // chars: two character string, char 1 in byte 0 and char 2 in byte 1. 363680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // hash: hash of two character string (32-bit int) 363780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // symbol_table: symbol table 363880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // mask: capacity mask (32-bit int) 363980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // undefined: undefined value 364080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // scratch: - 364180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 364280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Perform a number of probes in the symbol table. 364380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen static const int kProbes = 4; 364480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label found_in_symbol_table; 364580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label next_probe[kProbes]; 364680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen for (int i = 0; i < kProbes; i++) { 364780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Calculate entry in symbol table. 364880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(scratch, hash); 364980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (i > 0) { 365080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addl(scratch, Immediate(SymbolTable::GetProbeOffset(i))); 365180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 365280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ andl(scratch, mask); 365380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 365480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load the entry from the symble table. 365580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register candidate = scratch; // Scratch register contains candidate. 365680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(SymbolTable::kEntrySize == 1); 365780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(candidate, 365880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FieldOperand(symbol_table, 365980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen scratch, 366080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen times_pointer_size, 366180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SymbolTable::kElementsStartOffset)); 366280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 366380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If entry is undefined no string with this hash can be found. 366480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(candidate, undefined); 366580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, not_found); 366680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 366780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If length is not 2 the string is not a candidate. 366880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiCompare(FieldOperand(candidate, String::kLengthOffset), 366980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Smi::FromInt(2)); 367080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &next_probe[i]); 367180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 367280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // We use kScratchRegister as a temporary register in assumption that 367380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // JumpIfInstanceTypeIsNotSequentialAscii does not use it implicitly 367480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register temp = kScratchRegister; 367580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 367680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that the candidate is a non-external ascii string. 367780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(temp, FieldOperand(candidate, HeapObject::kMapOffset)); 367880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbl(temp, FieldOperand(temp, Map::kInstanceTypeOffset)); 367980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfInstanceTypeIsNotSequentialAscii( 368080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen temp, temp, &next_probe[i]); 368180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 368280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check if the two characters match. 368380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(temp, FieldOperand(candidate, SeqAsciiString::kHeaderSize)); 368480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ andl(temp, Immediate(0x0000ffff)); 368580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(chars, temp); 368680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &found_in_symbol_table); 368780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&next_probe[i]); 368880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 368980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 369080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // No matching 2 character string found by probing. 369180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ jmp(not_found); 369280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 369380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Scratch register contains result when we fall through to here. 369480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register result = scratch; 369580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&found_in_symbol_table); 369680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen if (!result.is(rax)) { 369780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, result); 369880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 369980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 370080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 370180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 370280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringHelper::GenerateHashInit(MacroAssembler* masm, 370380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register hash, 370480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register character, 370580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch) { 370680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // hash = character + (character << 10); 370780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(hash, character); 370880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shll(hash, Immediate(10)); 370980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addl(hash, character); 371080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // hash ^= hash >> 6; 371180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(scratch, hash); 371280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ sarl(scratch, Immediate(6)); 371380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(hash, scratch); 371480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 371580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 371680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 371780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringHelper::GenerateHashAddCharacter(MacroAssembler* masm, 371880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register hash, 371980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register character, 372080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch) { 372180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // hash += character; 372280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addl(hash, character); 372380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // hash += hash << 10; 372480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(scratch, hash); 372580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shll(scratch, Immediate(10)); 372680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addl(hash, scratch); 372780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // hash ^= hash >> 6; 372880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(scratch, hash); 372980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ sarl(scratch, Immediate(6)); 373080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(hash, scratch); 373180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 373280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 373380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 373480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringHelper::GenerateHashGetHash(MacroAssembler* masm, 373580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register hash, 373680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch) { 373780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // hash += hash << 3; 373880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ leal(hash, Operand(hash, hash, times_8, 0)); 373980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // hash ^= hash >> 11; 374080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(scratch, hash); 374180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ sarl(scratch, Immediate(11)); 374280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ xorl(hash, scratch); 374380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // hash += hash << 15; 374480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(scratch, hash); 374580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ shll(scratch, Immediate(15)); 374680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addl(hash, scratch); 374780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 374880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // if (hash == 0) hash = 27; 374980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label hash_not_zero; 375080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &hash_not_zero); 375180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(hash, Immediate(27)); 375280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&hash_not_zero); 375380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 375480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 375580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid SubStringStub::Generate(MacroAssembler* masm) { 375680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label runtime; 375780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 375880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Stack frame on entry. 375980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[0]: return address 376080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[8]: to 376180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[16]: from 376280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[24]: string 376380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 376480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const int kToOffset = 1 * kPointerSize; 376580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const int kFromOffset = kToOffset + kPointerSize; 376680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const int kStringOffset = kFromOffset + kPointerSize; 376780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const int kArgumentsSize = (kStringOffset + kPointerSize) - kToOffset; 376880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 376980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Make sure first argument is a string. 377080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kStringOffset)); 377180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(kSmiTag == 0); 377280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ testl(rax, Immediate(kSmiTagMask)); 377380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &runtime); 377480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Condition is_string = masm->IsObjectStringType(rax, rbx, rbx); 377580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(NegateCondition(is_string), &runtime); 377680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 377780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: string 377880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: instance type 377980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Calculate length of sub string using the smi values. 378080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label result_longer_than_two; 378180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rcx, Operand(rsp, kToOffset)); 378280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, Operand(rsp, kFromOffset)); 3783f87a203d89e1bbb6708282e0b64dbd13d59b723dBen Murdoch __ JumpUnlessBothNonNegativeSmi(rcx, rdx, &runtime); 378480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 37850d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ SmiSub(rcx, rcx, rdx); // Overflow doesn't happen. 378680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(FieldOperand(rax, String::kLengthOffset), rcx); 378780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label return_rax; 378880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(equal, &return_rax); 378980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Special handling of sub-strings of length 1 and 2. One character strings 379080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // are handled in the runtime system (looked up in the single character 379180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // cache). Two character strings are looked for in the symbol cache. 379280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rcx, rcx); 379380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(rcx, Immediate(2)); 379480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(greater, &result_longer_than_two); 379580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(less, &runtime); 379680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 379780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Sub string of length 2 requested. 379880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: string 379980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: instance type 380080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: sub string length (value is 2) 380180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: from index (smi) 380280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfInstanceTypeIsNotSequentialAscii(rbx, rbx, &runtime); 380380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 380480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the two characters forming the sub string. 380580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(rdx, rdx); // From index is no longer smi. 380680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbq(rbx, FieldOperand(rax, rdx, times_1, SeqAsciiString::kHeaderSize)); 380780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbq(rcx, 380880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen FieldOperand(rax, rdx, times_1, SeqAsciiString::kHeaderSize + 1)); 380980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 381080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Try to lookup two character string in symbol table. 381180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label make_two_character_string; 381280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StringHelper::GenerateTwoCharacterSymbolTableProbe( 381380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen masm, rbx, rcx, rax, rdx, rdi, r14, &make_two_character_string); 381480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(3 * kPointerSize); 381580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 381680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&make_two_character_string); 381780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Setup registers for allocating the two character string. 381880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, kStringOffset)); 381980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, FieldOperand(rax, HeapObject::kMapOffset)); 382080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movzxbl(rbx, FieldOperand(rbx, Map::kInstanceTypeOffset)); 382180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Set(rcx, 2); 382280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 382380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&result_longer_than_two); 382480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 382580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: string 382680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: instance type 382780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: result string length 382880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check for flat ascii string 382980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label non_ascii_flat; 383080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfInstanceTypeIsNotSequentialAscii(rbx, rbx, &non_ascii_flat); 383180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 383280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Allocate the result. 383380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateAsciiString(rax, rcx, rbx, rdx, rdi, &runtime); 383480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 383580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: result string 383680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: result string length 383780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, rsi); // esi used by following code. 383880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Locate first character of result. 383980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rdi, FieldOperand(rax, SeqAsciiString::kHeaderSize)); 384080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load string argument and locate character of sub string start. 384180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsi, Operand(rsp, kStringOffset)); 384280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, Operand(rsp, kFromOffset)); 384380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen { 384480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SmiIndex smi_as_index = masm->SmiToIndex(rbx, rbx, times_1); 384580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rsi, Operand(rsi, smi_as_index.reg, smi_as_index.scale, 384680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SeqAsciiString::kHeaderSize - kHeapObjectTag)); 384780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 384880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 384980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: result string 385080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: result length 385180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: original value of rsi 385280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdi: first character of result 385380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsi: character of sub string start 385480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StringHelper::GenerateCopyCharactersREP(masm, rdi, rsi, rcx, true); 385580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsi, rdx); // Restore rsi. 385680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::sub_string_native, 1); 385780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(kArgumentsSize); 385880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 385980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&non_ascii_flat); 386080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: string 386180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rbx: instance type & kStringRepresentationMask | kStringEncodingMask 386280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: result string length 386380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check for sequential two byte string 386480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpb(rbx, Immediate(kSeqStringTag | kTwoByteStringTag)); 386580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &runtime); 386680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 386780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Allocate the result. 386880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ AllocateTwoByteString(rax, rcx, rbx, rdx, rdi, &runtime); 386980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 387080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: result string 387180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: result string length 387280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, rsi); // esi used by following code. 387380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Locate first character of result. 387480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rdi, FieldOperand(rax, SeqTwoByteString::kHeaderSize)); 387580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Load string argument and locate character of sub string start. 387680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsi, Operand(rsp, kStringOffset)); 387780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rbx, Operand(rsp, kFromOffset)); 387880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen { 387980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SmiIndex smi_as_index = masm->SmiToIndex(rbx, rbx, times_2); 388080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ lea(rsi, Operand(rsi, smi_as_index.reg, smi_as_index.scale, 388180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SeqAsciiString::kHeaderSize - kHeapObjectTag)); 388280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 388380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 388480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rax: result string 388580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rcx: result length 388680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdx: original value of rsi 388780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rdi: first character of result 388880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsi: character of sub string start 388980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen StringHelper::GenerateCopyCharactersREP(masm, rdi, rsi, rcx, false); 389080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rsi, rdx); // Restore esi. 389180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 389280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&return_rax); 389380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::sub_string_native, 1); 389480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(kArgumentsSize); 389580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 389680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Just jump to runtime to create the sub string. 389780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&runtime); 389880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kSubString, 3, 1); 389980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 390080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 390180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 390280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringCompareStub::GenerateCompareFlatAsciiStrings(MacroAssembler* masm, 390380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register left, 390480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register right, 390580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch1, 390680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch2, 390780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch3, 390880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Register scratch4) { 390980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Ensure that you can always subtract a string length from a non-negative 391080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // number (e.g. another length). 391180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen STATIC_ASSERT(String::kMaxLength < 0x7fffffff); 391280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 391380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Find minimum length and length difference. 391480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(scratch1, FieldOperand(left, String::kLengthOffset)); 391580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(scratch4, scratch1); 391680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiSub(scratch4, 391780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen scratch4, 39180d5e116f6aee03185f237311a943491bb079a768Kristian Monsen FieldOperand(right, String::kLengthOffset)); 391980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Register scratch4 now holds left.length - right.length. 392080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const Register length_difference = scratch4; 39210d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel left_shorter; 392280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(less, &left_shorter); 392380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // The right string isn't longer that the left one. 392480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Get the right string's length by subtracting the (non-negative) difference 392580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // from the left string's length. 39260d5e116f6aee03185f237311a943491bb079a768Kristian Monsen __ SmiSub(scratch1, scratch1, length_difference); 392780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&left_shorter); 392880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Register scratch1 now holds Min(left.length, right.length). 392980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const Register min_length = scratch1; 393080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 39310d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel compare_lengths; 393280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // If min-length is zero, go directly to comparing lengths. 393380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiTest(min_length); 393480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(zero, &compare_lengths); 393580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 393680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiToInteger32(min_length, min_length); 393780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 393880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Registers scratch2 and scratch3 are free. 39390d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel result_not_equal; 394080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label loop; 394180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen { 394280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check characters 0 .. min_length - 1 in a loop. 394380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Use scratch3 as loop index, min_length as limit and scratch2 394480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // for computation. 394580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen const Register index = scratch3; 394680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movl(index, Immediate(0)); // Index into strings. 394780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&loop); 394880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Compare characters. 394980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // TODO(lrn): Could we load more than one character at a time? 395080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movb(scratch2, FieldOperand(left, 395180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen index, 395280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen times_1, 395380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SeqAsciiString::kHeaderSize)); 395480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Increment index and use -1 modifier on next load to give 395580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // the previous load extra time to complete. 395680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addl(index, Immediate(1)); 395780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpb(scratch2, FieldOperand(right, 395880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen index, 395980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen times_1, 396080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen SeqAsciiString::kHeaderSize - 1)); 396180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &result_not_equal); 396280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpl(index, min_length); 396380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, &loop); 396480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 396580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Completed loop without finding different characters. 396680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Compare lengths (precomputed). 396780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&compare_lengths); 396880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ SmiTest(length_difference); 396980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_zero, &result_not_equal); 397080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 397180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Result is EQUAL. 397280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(rax, Smi::FromInt(EQUAL)); 397380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 397480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 39750d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel result_greater; 397680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&result_not_equal); 397780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Unequal comparison of left to right, either character or length. 397880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(greater, &result_greater); 397980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 398080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Result is LESS. 398180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(rax, Smi::FromInt(LESS)); 398280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 398380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 398480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Result is GREATER. 398580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&result_greater); 398680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(rax, Smi::FromInt(GREATER)); 398780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(0); 398880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 398980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 399080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 399180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsenvoid StringCompareStub::Generate(MacroAssembler* masm) { 399280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Label runtime; 399380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 399480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Stack frame on entry. 399580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[0]: return address 399680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[8]: right string 399780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // rsp[16]: left string 399880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 399980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rdx, Operand(rsp, 2 * kPointerSize)); // left 400080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ movq(rax, Operand(rsp, 1 * kPointerSize)); // right 400180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 400280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check for identity. 40030d5e116f6aee03185f237311a943491bb079a768Kristian Monsen NearLabel not_same; 400480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ cmpq(rdx, rax); 400580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ j(not_equal, ¬_same); 400680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ Move(rax, Smi::FromInt(EQUAL)); 400780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::string_compare_native, 1); 400880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ ret(2 * kPointerSize); 400980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 401080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(¬_same); 401180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 401280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Check that both are sequential ASCII strings. 401380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ JumpIfNotBothSequentialAsciiStrings(rdx, rax, rcx, rbx, &runtime); 401480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 401580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Inline comparison of ascii strings. 401680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ IncrementCounter(&Counters::string_compare_native, 1); 401780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Drop arguments from the stack 401880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ pop(rcx); 401980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rsp, Immediate(2 * kPointerSize)); 402080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ push(rcx); 402180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen GenerateCompareFlatAsciiStrings(masm, rdx, rax, rcx, rbx, rdi, r8); 402280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 402380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // Call the runtime; it returns -1 (less), 0 (equal), or 1 (greater) 402480d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen // tagged as a small integer. 402580d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ bind(&runtime); 402680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ TailCallRuntime(Runtime::kStringCompare, 2, 1); 402780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} 402880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 402980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#undef __ 403080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 403180d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen} } // namespace v8::internal 403280d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen 403380d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen#endif // V8_TARGET_ARCH_X64 4034