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Diffstat (limited to 'V8Binding/v8/src/ia32/builtins-ia32.cc')
| -rw-r--r-- | V8Binding/v8/src/ia32/builtins-ia32.cc | 1233 |
1 files changed, 0 insertions, 1233 deletions
diff --git a/V8Binding/v8/src/ia32/builtins-ia32.cc b/V8Binding/v8/src/ia32/builtins-ia32.cc deleted file mode 100644 index ad44026..0000000 --- a/V8Binding/v8/src/ia32/builtins-ia32.cc +++ /dev/null @@ -1,1233 +0,0 @@ -// Copyright 2006-2009 the V8 project authors. All rights reserved. -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following -// disclaimer in the documentation and/or other materials provided -// with the distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived -// from this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#include "v8.h" - -#include "codegen-inl.h" - -namespace v8 { -namespace internal { - - -#define __ ACCESS_MASM(masm) - - -void Builtins::Generate_Adaptor(MacroAssembler* masm, CFunctionId id) { - // TODO(428): Don't pass the function in a static variable. - ExternalReference passed = ExternalReference::builtin_passed_function(); - __ mov(Operand::StaticVariable(passed), edi); - - // The actual argument count has already been loaded into register - // eax, but JumpToRuntime expects eax to contain the number of - // arguments including the receiver. - __ inc(eax); - __ JumpToRuntime(ExternalReference(id)); -} - - -void Builtins::Generate_JSConstructCall(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- eax: number of arguments - // -- edi: constructor function - // ----------------------------------- - - Label non_function_call; - // Check that function is not a smi. - __ test(edi, Immediate(kSmiTagMask)); - __ j(zero, &non_function_call); - // Check that function is a JSFunction. - __ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx); - __ j(not_equal, &non_function_call); - - // Jump to the function-specific construct stub. - __ mov(ebx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); - __ mov(ebx, FieldOperand(ebx, SharedFunctionInfo::kConstructStubOffset)); - __ lea(ebx, FieldOperand(ebx, Code::kHeaderSize)); - __ jmp(Operand(ebx)); - - // edi: called object - // eax: number of arguments - __ bind(&non_function_call); - - // Set expected number of arguments to zero (not changing eax). - __ Set(ebx, Immediate(0)); - __ GetBuiltinEntry(edx, Builtins::CALL_NON_FUNCTION_AS_CONSTRUCTOR); - __ jmp(Handle<Code>(builtin(ArgumentsAdaptorTrampoline)), - RelocInfo::CODE_TARGET); -} - - -void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) { - // Enter a construct frame. - __ EnterConstructFrame(); - - // Store a smi-tagged arguments count on the stack. - __ shl(eax, kSmiTagSize); - __ push(eax); - - // Push the function to invoke on the stack. - __ push(edi); - - // Try to allocate the object without transitioning into C code. If any of the - // preconditions is not met, the code bails out to the runtime call. - Label rt_call, allocated; - if (FLAG_inline_new) { - Label undo_allocation; -#ifdef ENABLE_DEBUGGER_SUPPORT - ExternalReference debug_step_in_fp = - ExternalReference::debug_step_in_fp_address(); - __ cmp(Operand::StaticVariable(debug_step_in_fp), Immediate(0)); - __ j(not_equal, &rt_call); -#endif - - // Verified that the constructor is a JSFunction. - // Load the initial map and verify that it is in fact a map. - // edi: constructor - __ mov(eax, FieldOperand(edi, JSFunction::kPrototypeOrInitialMapOffset)); - // Will both indicate a NULL and a Smi - __ test(eax, Immediate(kSmiTagMask)); - __ j(zero, &rt_call); - // edi: constructor - // eax: initial map (if proven valid below) - __ CmpObjectType(eax, MAP_TYPE, ebx); - __ j(not_equal, &rt_call); - - // Check that the constructor is not constructing a JSFunction (see comments - // in Runtime_NewObject in runtime.cc). In which case the initial map's - // instance type would be JS_FUNCTION_TYPE. - // edi: constructor - // eax: initial map - __ CmpInstanceType(eax, JS_FUNCTION_TYPE); - __ j(equal, &rt_call); - - // Now allocate the JSObject on the heap. - // edi: constructor - // eax: initial map - __ movzx_b(edi, FieldOperand(eax, Map::kInstanceSizeOffset)); - __ shl(edi, kPointerSizeLog2); - __ AllocateInNewSpace(edi, ebx, edi, no_reg, &rt_call, NO_ALLOCATION_FLAGS); - // Allocated the JSObject, now initialize the fields. - // eax: initial map - // ebx: JSObject - // edi: start of next object - __ mov(Operand(ebx, JSObject::kMapOffset), eax); - __ mov(ecx, Factory::empty_fixed_array()); - __ mov(Operand(ebx, JSObject::kPropertiesOffset), ecx); - __ mov(Operand(ebx, JSObject::kElementsOffset), ecx); - // Set extra fields in the newly allocated object. - // eax: initial map - // ebx: JSObject - // edi: start of next object - { Label loop, entry; - __ mov(edx, Factory::undefined_value()); - __ lea(ecx, Operand(ebx, JSObject::kHeaderSize)); - __ jmp(&entry); - __ bind(&loop); - __ mov(Operand(ecx, 0), edx); - __ add(Operand(ecx), Immediate(kPointerSize)); - __ bind(&entry); - __ cmp(ecx, Operand(edi)); - __ j(less, &loop); - } - - // Add the object tag to make the JSObject real, so that we can continue and - // jump into the continuation code at any time from now on. Any failures - // need to undo the allocation, so that the heap is in a consistent state - // and verifiable. - // eax: initial map - // ebx: JSObject - // edi: start of next object - __ or_(Operand(ebx), Immediate(kHeapObjectTag)); - - // Check if a non-empty properties array is needed. - // Allocate and initialize a FixedArray if it is. - // eax: initial map - // ebx: JSObject - // edi: start of next object - // Calculate the total number of properties described by the map. - __ movzx_b(edx, FieldOperand(eax, Map::kUnusedPropertyFieldsOffset)); - __ movzx_b(ecx, FieldOperand(eax, Map::kPreAllocatedPropertyFieldsOffset)); - __ add(edx, Operand(ecx)); - // Calculate unused properties past the end of the in-object properties. - __ movzx_b(ecx, FieldOperand(eax, Map::kInObjectPropertiesOffset)); - __ sub(edx, Operand(ecx)); - // Done if no extra properties are to be allocated. - __ j(zero, &allocated); - __ Assert(positive, "Property allocation count failed."); - - // Scale the number of elements by pointer size and add the header for - // FixedArrays to the start of the next object calculation from above. - // ebx: JSObject - // edi: start of next object (will be start of FixedArray) - // edx: number of elements in properties array - __ AllocateInNewSpace(FixedArray::kHeaderSize, - times_pointer_size, - edx, - edi, - ecx, - no_reg, - &undo_allocation, - RESULT_CONTAINS_TOP); - - // Initialize the FixedArray. - // ebx: JSObject - // edi: FixedArray - // edx: number of elements - // ecx: start of next object - __ mov(eax, Factory::fixed_array_map()); - __ mov(Operand(edi, JSObject::kMapOffset), eax); // setup the map - __ mov(Operand(edi, Array::kLengthOffset), edx); // and length - - // Initialize the fields to undefined. - // ebx: JSObject - // edi: FixedArray - // ecx: start of next object - { Label loop, entry; - __ mov(edx, Factory::undefined_value()); - __ lea(eax, Operand(edi, FixedArray::kHeaderSize)); - __ jmp(&entry); - __ bind(&loop); - __ mov(Operand(eax, 0), edx); - __ add(Operand(eax), Immediate(kPointerSize)); - __ bind(&entry); - __ cmp(eax, Operand(ecx)); - __ j(below, &loop); - } - - // Store the initialized FixedArray into the properties field of - // the JSObject - // ebx: JSObject - // edi: FixedArray - __ or_(Operand(edi), Immediate(kHeapObjectTag)); // add the heap tag - __ mov(FieldOperand(ebx, JSObject::kPropertiesOffset), edi); - - - // Continue with JSObject being successfully allocated - // ebx: JSObject - __ jmp(&allocated); - - // Undo the setting of the new top so that the heap is verifiable. For - // example, the map's unused properties potentially do not match the - // allocated objects unused properties. - // ebx: JSObject (previous new top) - __ bind(&undo_allocation); - __ UndoAllocationInNewSpace(ebx); - } - - // Allocate the new receiver object using the runtime call. - __ bind(&rt_call); - // Must restore edi (constructor) before calling runtime. - __ mov(edi, Operand(esp, 0)); - // edi: function (constructor) - __ push(edi); - __ CallRuntime(Runtime::kNewObject, 1); - __ mov(ebx, Operand(eax)); // store result in ebx - - // New object allocated. - // ebx: newly allocated object - __ bind(&allocated); - // Retrieve the function from the stack. - __ pop(edi); - - // Retrieve smi-tagged arguments count from the stack. - __ mov(eax, Operand(esp, 0)); - __ shr(eax, kSmiTagSize); - - // Push the allocated receiver to the stack. We need two copies - // because we may have to return the original one and the calling - // conventions dictate that the called function pops the receiver. - __ push(ebx); - __ push(ebx); - - // Setup pointer to last argument. - __ lea(ebx, Operand(ebp, StandardFrameConstants::kCallerSPOffset)); - - // Copy arguments and receiver to the expression stack. - Label loop, entry; - __ mov(ecx, Operand(eax)); - __ jmp(&entry); - __ bind(&loop); - __ push(Operand(ebx, ecx, times_4, 0)); - __ bind(&entry); - __ dec(ecx); - __ j(greater_equal, &loop); - - // Call the function. - ParameterCount actual(eax); - __ InvokeFunction(edi, actual, CALL_FUNCTION); - - // Restore context from the frame. - __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); - - // If the result is an object (in the ECMA sense), we should get rid - // of the receiver and use the result; see ECMA-262 section 13.2.2-7 - // on page 74. - Label use_receiver, exit; - - // If the result is a smi, it is *not* an object in the ECMA sense. - __ test(eax, Immediate(kSmiTagMask)); - __ j(zero, &use_receiver, not_taken); - - // If the type of the result (stored in its map) is less than - // FIRST_JS_OBJECT_TYPE, it is not an object in the ECMA sense. - __ mov(ecx, FieldOperand(eax, HeapObject::kMapOffset)); - __ movzx_b(ecx, FieldOperand(ecx, Map::kInstanceTypeOffset)); - __ cmp(ecx, FIRST_JS_OBJECT_TYPE); - __ j(greater_equal, &exit, not_taken); - - // Throw away the result of the constructor invocation and use the - // on-stack receiver as the result. - __ bind(&use_receiver); - __ mov(eax, Operand(esp, 0)); - - // Restore the arguments count and leave the construct frame. - __ bind(&exit); - __ mov(ebx, Operand(esp, kPointerSize)); // get arguments count - __ LeaveConstructFrame(); - - // Remove caller arguments from the stack and return. - ASSERT(kSmiTagSize == 1 && kSmiTag == 0); - __ pop(ecx); - __ lea(esp, Operand(esp, ebx, times_2, 1 * kPointerSize)); // 1 ~ receiver - __ push(ecx); - __ IncrementCounter(&Counters::constructed_objects, 1); - __ ret(0); -} - - -static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, - bool is_construct) { - // Clear the context before we push it when entering the JS frame. - __ xor_(esi, Operand(esi)); // clear esi - - // Enter an internal frame. - __ EnterInternalFrame(); - - // Load the previous frame pointer (ebx) to access C arguments - __ mov(ebx, Operand(ebp, 0)); - - // Get the function from the frame and setup the context. - __ mov(ecx, Operand(ebx, EntryFrameConstants::kFunctionArgOffset)); - __ mov(esi, FieldOperand(ecx, JSFunction::kContextOffset)); - - // Push the function and the receiver onto the stack. - __ push(ecx); - __ push(Operand(ebx, EntryFrameConstants::kReceiverArgOffset)); - - // Load the number of arguments and setup pointer to the arguments. - __ mov(eax, Operand(ebx, EntryFrameConstants::kArgcOffset)); - __ mov(ebx, Operand(ebx, EntryFrameConstants::kArgvOffset)); - - // Copy arguments to the stack in a loop. - Label loop, entry; - __ xor_(ecx, Operand(ecx)); // clear ecx - __ jmp(&entry); - __ bind(&loop); - __ mov(edx, Operand(ebx, ecx, times_4, 0)); // push parameter from argv - __ push(Operand(edx, 0)); // dereference handle - __ inc(Operand(ecx)); - __ bind(&entry); - __ cmp(ecx, Operand(eax)); - __ j(not_equal, &loop); - - // Get the function from the stack and call it. - __ mov(edi, Operand(esp, eax, times_4, +1 * kPointerSize)); // +1 ~ receiver - - // Invoke the code. - if (is_construct) { - __ call(Handle<Code>(Builtins::builtin(Builtins::JSConstructCall)), - RelocInfo::CODE_TARGET); - } else { - ParameterCount actual(eax); - __ InvokeFunction(edi, actual, CALL_FUNCTION); - } - - // Exit the JS frame. Notice that this also removes the empty - // context and the function left on the stack by the code - // invocation. - __ LeaveInternalFrame(); - __ ret(1 * kPointerSize); // remove receiver -} - - -void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { - Generate_JSEntryTrampolineHelper(masm, false); -} - - -void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { - Generate_JSEntryTrampolineHelper(masm, true); -} - - -void Builtins::Generate_FunctionCall(MacroAssembler* masm) { - // 1. Make sure we have at least one argument. - { Label done; - __ test(eax, Operand(eax)); - __ j(not_zero, &done, taken); - __ pop(ebx); - __ push(Immediate(Factory::undefined_value())); - __ push(ebx); - __ inc(eax); - __ bind(&done); - } - - // 2. Get the function to call from the stack. - { Label done, non_function, function; - // +1 ~ return address. - __ mov(edi, Operand(esp, eax, times_4, +1 * kPointerSize)); - __ test(edi, Immediate(kSmiTagMask)); - __ j(zero, &non_function, not_taken); - __ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx); - __ j(equal, &function, taken); - - // Non-function called: Clear the function to force exception. - __ bind(&non_function); - __ xor_(edi, Operand(edi)); - __ jmp(&done); - - // Function called: Change context eagerly to get the right global object. - __ bind(&function); - __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); - - __ bind(&done); - } - - // 3. Make sure first argument is an object; convert if necessary. - { Label call_to_object, use_global_receiver, patch_receiver, done; - __ mov(ebx, Operand(esp, eax, times_4, 0)); - - __ test(ebx, Immediate(kSmiTagMask)); - __ j(zero, &call_to_object); - - __ cmp(ebx, Factory::null_value()); - __ j(equal, &use_global_receiver); - __ cmp(ebx, Factory::undefined_value()); - __ j(equal, &use_global_receiver); - - __ mov(ecx, FieldOperand(ebx, HeapObject::kMapOffset)); - __ movzx_b(ecx, FieldOperand(ecx, Map::kInstanceTypeOffset)); - __ cmp(ecx, FIRST_JS_OBJECT_TYPE); - __ j(less, &call_to_object); - __ cmp(ecx, LAST_JS_OBJECT_TYPE); - __ j(less_equal, &done); - - __ bind(&call_to_object); - __ EnterInternalFrame(); // preserves eax, ebx, edi - - // Store the arguments count on the stack (smi tagged). - ASSERT(kSmiTag == 0); - __ shl(eax, kSmiTagSize); - __ push(eax); - - __ push(edi); // save edi across the call - __ push(ebx); - __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); - __ mov(ebx, eax); - __ pop(edi); // restore edi after the call - - // Get the arguments count and untag it. - __ pop(eax); - __ shr(eax, kSmiTagSize); - - __ LeaveInternalFrame(); - __ jmp(&patch_receiver); - - // Use the global receiver object from the called function as the receiver. - __ bind(&use_global_receiver); - const int kGlobalIndex = - Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; - __ mov(ebx, FieldOperand(esi, kGlobalIndex)); - __ mov(ebx, FieldOperand(ebx, GlobalObject::kGlobalReceiverOffset)); - - __ bind(&patch_receiver); - __ mov(Operand(esp, eax, times_4, 0), ebx); - - __ bind(&done); - } - - // 4. Shift stuff one slot down the stack. - { Label loop; - __ lea(ecx, Operand(eax, +1)); // +1 ~ copy receiver too - __ bind(&loop); - __ mov(ebx, Operand(esp, ecx, times_4, 0)); - __ mov(Operand(esp, ecx, times_4, kPointerSize), ebx); - __ dec(ecx); - __ j(not_zero, &loop); - } - - // 5. Remove TOS (copy of last arguments), but keep return address. - __ pop(ebx); - __ pop(ecx); - __ push(ebx); - __ dec(eax); - - // 6. Check that function really was a function and get the code to - // call from the function and check that the number of expected - // arguments matches what we're providing. - { Label invoke; - __ test(edi, Operand(edi)); - __ j(not_zero, &invoke, taken); - __ xor_(ebx, Operand(ebx)); - __ GetBuiltinEntry(edx, Builtins::CALL_NON_FUNCTION); - __ jmp(Handle<Code>(builtin(ArgumentsAdaptorTrampoline)), - RelocInfo::CODE_TARGET); - - __ bind(&invoke); - __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); - __ mov(ebx, - FieldOperand(edx, SharedFunctionInfo::kFormalParameterCountOffset)); - __ mov(edx, FieldOperand(edx, SharedFunctionInfo::kCodeOffset)); - __ lea(edx, FieldOperand(edx, Code::kHeaderSize)); - __ cmp(eax, Operand(ebx)); - __ j(not_equal, Handle<Code>(builtin(ArgumentsAdaptorTrampoline))); - } - - // 7. Jump (tail-call) to the code in register edx without checking arguments. - ParameterCount expected(0); - __ InvokeCode(Operand(edx), expected, expected, JUMP_FUNCTION); -} - - -void Builtins::Generate_FunctionApply(MacroAssembler* masm) { - __ EnterInternalFrame(); - - __ push(Operand(ebp, 4 * kPointerSize)); // push this - __ push(Operand(ebp, 2 * kPointerSize)); // push arguments - __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_FUNCTION); - - if (FLAG_check_stack) { - // We need to catch preemptions right here, otherwise an unlucky preemption - // could show up as a failed apply. - ExternalReference stack_guard_limit = - ExternalReference::address_of_stack_guard_limit(); - Label retry_preemption; - Label no_preemption; - __ bind(&retry_preemption); - __ mov(edi, Operand::StaticVariable(stack_guard_limit)); - __ cmp(esp, Operand(edi)); - __ j(above, &no_preemption, taken); - - // Preemption! - // Because builtins always remove the receiver from the stack, we - // have to fake one to avoid underflowing the stack. - __ push(eax); - __ push(Immediate(Smi::FromInt(0))); - - // Do call to runtime routine. - __ CallRuntime(Runtime::kStackGuard, 1); - __ pop(eax); - __ jmp(&retry_preemption); - - __ bind(&no_preemption); - - Label okay; - // Make ecx the space we have left. - __ mov(ecx, Operand(esp)); - __ sub(ecx, Operand(edi)); - // Make edx the space we need for the array when it is unrolled onto the - // stack. - __ mov(edx, Operand(eax)); - __ shl(edx, kPointerSizeLog2 - kSmiTagSize); - __ cmp(ecx, Operand(edx)); - __ j(greater, &okay, taken); - - // Too bad: Out of stack space. - __ push(Operand(ebp, 4 * kPointerSize)); // push this - __ push(eax); - __ InvokeBuiltin(Builtins::APPLY_OVERFLOW, CALL_FUNCTION); - __ bind(&okay); - } - - // Push current index and limit. - const int kLimitOffset = - StandardFrameConstants::kExpressionsOffset - 1 * kPointerSize; - const int kIndexOffset = kLimitOffset - 1 * kPointerSize; - __ push(eax); // limit - __ push(Immediate(0)); // index - - // Change context eagerly to get the right global object if - // necessary. - __ mov(edi, Operand(ebp, 4 * kPointerSize)); - __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); - - // Compute the receiver. - Label call_to_object, use_global_receiver, push_receiver; - __ mov(ebx, Operand(ebp, 3 * kPointerSize)); - __ test(ebx, Immediate(kSmiTagMask)); - __ j(zero, &call_to_object); - __ cmp(ebx, Factory::null_value()); - __ j(equal, &use_global_receiver); - __ cmp(ebx, Factory::undefined_value()); - __ j(equal, &use_global_receiver); - - // If given receiver is already a JavaScript object then there's no - // reason for converting it. - __ mov(ecx, FieldOperand(ebx, HeapObject::kMapOffset)); - __ movzx_b(ecx, FieldOperand(ecx, Map::kInstanceTypeOffset)); - __ cmp(ecx, FIRST_JS_OBJECT_TYPE); - __ j(less, &call_to_object); - __ cmp(ecx, LAST_JS_OBJECT_TYPE); - __ j(less_equal, &push_receiver); - - // Convert the receiver to an object. - __ bind(&call_to_object); - __ push(ebx); - __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); - __ mov(ebx, Operand(eax)); - __ jmp(&push_receiver); - - // Use the current global receiver object as the receiver. - __ bind(&use_global_receiver); - const int kGlobalOffset = - Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; - __ mov(ebx, FieldOperand(esi, kGlobalOffset)); - __ mov(ebx, FieldOperand(ebx, GlobalObject::kGlobalReceiverOffset)); - - // Push the receiver. - __ bind(&push_receiver); - __ push(ebx); - - // Copy all arguments from the array to the stack. - Label entry, loop; - __ mov(eax, Operand(ebp, kIndexOffset)); - __ jmp(&entry); - __ bind(&loop); - __ mov(ecx, Operand(ebp, 2 * kPointerSize)); // load arguments - __ push(ecx); - __ push(eax); - - // Use inline caching to speed up access to arguments. - Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); - __ call(ic, RelocInfo::CODE_TARGET); - // It is important that we do not have a test instruction after the - // call. A test instruction after the call is used to indicate that - // we have generated an inline version of the keyed load. In this - // case, we know that we are not generating a test instruction next. - - // Remove IC arguments from the stack and push the nth argument. - __ add(Operand(esp), Immediate(2 * kPointerSize)); - __ push(eax); - - // Update the index on the stack and in register eax. - __ mov(eax, Operand(ebp, kIndexOffset)); - __ add(Operand(eax), Immediate(1 << kSmiTagSize)); - __ mov(Operand(ebp, kIndexOffset), eax); - - __ bind(&entry); - __ cmp(eax, Operand(ebp, kLimitOffset)); - __ j(not_equal, &loop); - - // Invoke the function. - ParameterCount actual(eax); - __ shr(eax, kSmiTagSize); - __ mov(edi, Operand(ebp, 4 * kPointerSize)); - __ InvokeFunction(edi, actual, CALL_FUNCTION); - - __ LeaveInternalFrame(); - __ ret(3 * kPointerSize); // remove this, receiver, and arguments -} - - -// Load the built-in Array function from the current context. -static void GenerateLoadArrayFunction(MacroAssembler* masm, Register result) { - // Load the global context. - __ mov(result, Operand(esi, Context::SlotOffset(Context::GLOBAL_INDEX))); - __ mov(result, FieldOperand(result, GlobalObject::kGlobalContextOffset)); - // Load the Array function from the global context. - __ mov(result, - Operand(result, Context::SlotOffset(Context::ARRAY_FUNCTION_INDEX))); -} - - -// Number of empty elements to allocate for an empty array. -static const int kPreallocatedArrayElements = 4; - - -// Allocate an empty JSArray. The allocated array is put into the result -// register. If the parameter initial_capacity is larger than zero an elements -// backing store is allocated with this size and filled with the hole values. -// Otherwise the elements backing store is set to the empty FixedArray. -static void AllocateEmptyJSArray(MacroAssembler* masm, - Register array_function, - Register result, - Register scratch1, - Register scratch2, - Register scratch3, - int initial_capacity, - Label* gc_required) { - ASSERT(initial_capacity >= 0); - - // Load the initial map from the array function. - __ mov(scratch1, FieldOperand(array_function, - JSFunction::kPrototypeOrInitialMapOffset)); - - // Allocate the JSArray object together with space for a fixed array with the - // requested elements. - int size = JSArray::kSize; - if (initial_capacity > 0) { - size += FixedArray::SizeFor(initial_capacity); - } - __ AllocateInNewSpace(size, - result, - scratch2, - scratch3, - gc_required, - TAG_OBJECT); - - // Allocated the JSArray. Now initialize the fields except for the elements - // array. - // result: JSObject - // scratch1: initial map - // scratch2: start of next object - __ mov(FieldOperand(result, JSObject::kMapOffset), scratch1); - __ mov(FieldOperand(result, JSArray::kPropertiesOffset), - Factory::empty_fixed_array()); - // Field JSArray::kElementsOffset is initialized later. - __ mov(FieldOperand(result, JSArray::kLengthOffset), Immediate(0)); - - // If no storage is requested for the elements array just set the empty - // fixed array. - if (initial_capacity == 0) { - __ mov(FieldOperand(result, JSArray::kElementsOffset), - Factory::empty_fixed_array()); - return; - } - - // Calculate the location of the elements array and set elements array member - // of the JSArray. - // result: JSObject - // scratch2: start of next object - __ lea(scratch1, Operand(result, JSArray::kSize)); - __ mov(FieldOperand(result, JSArray::kElementsOffset), scratch1); - - // Initialize the FixedArray and fill it with holes. FixedArray length is not - // stored as a smi. - // result: JSObject - // scratch1: elements array - // scratch2: start of next object - __ mov(FieldOperand(scratch1, JSObject::kMapOffset), - Factory::fixed_array_map()); - __ mov(FieldOperand(scratch1, Array::kLengthOffset), - Immediate(initial_capacity)); - - // Fill the FixedArray with the hole value. Inline the code if short. - // Reconsider loop unfolding if kPreallocatedArrayElements gets changed. - static const int kLoopUnfoldLimit = 4; - ASSERT(kPreallocatedArrayElements <= kLoopUnfoldLimit); - if (initial_capacity <= kLoopUnfoldLimit) { - // Use a scratch register here to have only one reloc info when unfolding - // the loop. - __ mov(scratch3, Factory::the_hole_value()); - for (int i = 0; i < initial_capacity; i++) { - __ mov(FieldOperand(scratch1, - FixedArray::kHeaderSize + i * kPointerSize), - scratch3); - } - } else { - Label loop, entry; - __ jmp(&entry); - __ bind(&loop); - __ mov(Operand(scratch1, 0), Factory::the_hole_value()); - __ add(Operand(scratch1), Immediate(kPointerSize)); - __ bind(&entry); - __ cmp(scratch1, Operand(scratch2)); - __ j(below, &loop); - } -} - - -// Allocate a JSArray with the number of elements stored in a register. The -// register array_function holds the built-in Array function and the register -// array_size holds the size of the array as a smi. The allocated array is put -// into the result register and beginning and end of the FixedArray elements -// storage is put into registers elements_array and elements_array_end (see -// below for when that is not the case). If the parameter fill_with_holes is -// true the allocated elements backing store is filled with the hole values -// otherwise it is left uninitialized. When the backing store is filled the -// register elements_array is scratched. -static void AllocateJSArray(MacroAssembler* masm, - Register array_function, // Array function. - Register array_size, // As a smi. - Register result, - Register elements_array, - Register elements_array_end, - Register scratch, - bool fill_with_hole, - Label* gc_required) { - Label not_empty, allocated; - - // Load the initial map from the array function. - __ mov(elements_array, - FieldOperand(array_function, - JSFunction::kPrototypeOrInitialMapOffset)); - - // Check whether an empty sized array is requested. - __ test(array_size, Operand(array_size)); - __ j(not_zero, ¬_empty); - - // If an empty array is requested allocate a small elements array anyway. This - // keeps the code below free of special casing for the empty array. - int size = JSArray::kSize + FixedArray::SizeFor(kPreallocatedArrayElements); - __ AllocateInNewSpace(size, - result, - elements_array_end, - scratch, - gc_required, - TAG_OBJECT); - __ jmp(&allocated); - - // Allocate the JSArray object together with space for a FixedArray with the - // requested elements. - __ bind(¬_empty); - ASSERT(kSmiTagSize == 1 && kSmiTag == 0); - __ AllocateInNewSpace(JSArray::kSize + FixedArray::kHeaderSize, - times_half_pointer_size, // array_size is a smi. - array_size, - result, - elements_array_end, - scratch, - gc_required, - TAG_OBJECT); - - // Allocated the JSArray. Now initialize the fields except for the elements - // array. - // result: JSObject - // elements_array: initial map - // elements_array_end: start of next object - // array_size: size of array (smi) - __ bind(&allocated); - __ mov(FieldOperand(result, JSObject::kMapOffset), elements_array); - __ mov(elements_array, Factory::empty_fixed_array()); - __ mov(FieldOperand(result, JSArray::kPropertiesOffset), elements_array); - // Field JSArray::kElementsOffset is initialized later. - __ mov(FieldOperand(result, JSArray::kLengthOffset), array_size); - - // Calculate the location of the elements array and set elements array member - // of the JSArray. - // result: JSObject - // elements_array_end: start of next object - // array_size: size of array (smi) - __ lea(elements_array, Operand(result, JSArray::kSize)); - __ mov(FieldOperand(result, JSArray::kElementsOffset), elements_array); - - // Initialize the fixed array. FixedArray length is not stored as a smi. - // result: JSObject - // elements_array: elements array - // elements_array_end: start of next object - // array_size: size of array (smi) - ASSERT(kSmiTag == 0); - __ shr(array_size, kSmiTagSize); // Convert from smi to value. - __ mov(FieldOperand(elements_array, JSObject::kMapOffset), - Factory::fixed_array_map()); - Label not_empty_2, fill_array; - __ test(array_size, Operand(array_size)); - __ j(not_zero, ¬_empty_2); - // Length of the FixedArray is the number of pre-allocated elements even - // though the actual JSArray has length 0. - __ mov(FieldOperand(elements_array, Array::kLengthOffset), - Immediate(kPreallocatedArrayElements)); - __ jmp(&fill_array); - __ bind(¬_empty_2); - // For non-empty JSArrays the length of the FixedArray and the JSArray is the - // same. - __ mov(FieldOperand(elements_array, Array::kLengthOffset), array_size); - - // Fill the allocated FixedArray with the hole value if requested. - // result: JSObject - // elements_array: elements array - // elements_array_end: start of next object - __ bind(&fill_array); - if (fill_with_hole) { - Label loop, entry; - __ mov(scratch, Factory::the_hole_value()); - __ lea(elements_array, Operand(elements_array, - FixedArray::kHeaderSize - kHeapObjectTag)); - __ jmp(&entry); - __ bind(&loop); - __ mov(Operand(elements_array, 0), scratch); - __ add(Operand(elements_array), Immediate(kPointerSize)); - __ bind(&entry); - __ cmp(elements_array, Operand(elements_array_end)); - __ j(below, &loop); - } -} - - -// Create a new array for the built-in Array function. This function allocates -// the JSArray object and the FixedArray elements array and initializes these. -// If the Array cannot be constructed in native code the runtime is called. This -// function assumes the following state: -// edi: constructor (built-in Array function) -// eax: argc -// esp[0]: return address -// esp[4]: last argument -// This function is used for both construct and normal calls of Array. Whether -// it is a construct call or not is indicated by the construct_call parameter. -// The only difference between handling a construct call and a normal call is -// that for a construct call the constructor function in edi needs to be -// preserved for entering the generic code. In both cases argc in eax needs to -// be preserved. -static void ArrayNativeCode(MacroAssembler* masm, - bool construct_call, - Label *call_generic_code) { - Label argc_one_or_more, argc_two_or_more, prepare_generic_code_call; - - // Push the constructor and argc. No need to tag argc as a smi, as there will - // be no garbage collection with this on the stack. - int push_count = 0; - if (construct_call) { - push_count++; - __ push(edi); - } - push_count++; - __ push(eax); - - // Check for array construction with zero arguments. - __ test(eax, Operand(eax)); - __ j(not_zero, &argc_one_or_more); - - // Handle construction of an empty array. - AllocateEmptyJSArray(masm, - edi, - eax, - ebx, - ecx, - edi, - kPreallocatedArrayElements, - &prepare_generic_code_call); - __ IncrementCounter(&Counters::array_function_native, 1); - __ pop(ebx); - if (construct_call) { - __ pop(edi); - } - __ ret(kPointerSize); - - // Check for one argument. Bail out if argument is not smi or if it is - // negative. - __ bind(&argc_one_or_more); - __ cmp(eax, 1); - __ j(not_equal, &argc_two_or_more); - ASSERT(kSmiTag == 0); - __ test(Operand(esp, (push_count + 1) * kPointerSize), - Immediate(kIntptrSignBit | kSmiTagMask)); - __ j(not_zero, &prepare_generic_code_call); - - // Handle construction of an empty array of a certain size. Get the size from - // the stack and bail out if size is to large to actually allocate an elements - // array. - __ mov(edx, Operand(esp, (push_count + 1) * kPointerSize)); - ASSERT(kSmiTag == 0); - __ cmp(edx, JSObject::kInitialMaxFastElementArray << kSmiTagSize); - __ j(greater_equal, &prepare_generic_code_call); - - // edx: array_size (smi) - // edi: constructor - // esp[0]: argc - // esp[4]: constructor (only if construct_call) - // esp[8]: return address - // esp[C]: argument - AllocateJSArray(masm, - edi, - edx, - eax, - ebx, - ecx, - edi, - true, - &prepare_generic_code_call); - __ IncrementCounter(&Counters::array_function_native, 1); - __ pop(ebx); - if (construct_call) { - __ pop(edi); - } - __ ret(2 * kPointerSize); - - // Handle construction of an array from a list of arguments. - __ bind(&argc_two_or_more); - ASSERT(kSmiTag == 0); - __ shl(eax, kSmiTagSize); // Convet argc to a smi. - // eax: array_size (smi) - // edi: constructor - // esp[0] : argc - // esp[4]: constructor (only if construct_call) - // esp[8] : return address - // esp[C] : last argument - AllocateJSArray(masm, - edi, - eax, - ebx, - ecx, - edx, - edi, - false, - &prepare_generic_code_call); - __ IncrementCounter(&Counters::array_function_native, 1); - __ mov(eax, ebx); - __ pop(ebx); - if (construct_call) { - __ pop(edi); - } - __ push(eax); - // eax: JSArray - // ebx: argc - // edx: elements_array_end (untagged) - // esp[0]: JSArray - // esp[4]: return address - // esp[8]: last argument - - // Location of the last argument - __ lea(edi, Operand(esp, 2 * kPointerSize)); - - // Location of the first array element (Parameter fill_with_holes to - // AllocateJSArrayis false, so the FixedArray is returned in ecx). - __ lea(edx, Operand(ecx, FixedArray::kHeaderSize - kHeapObjectTag)); - - // ebx: argc - // edx: location of the first array element - // edi: location of the last argument - // esp[0]: JSArray - // esp[4]: return address - // esp[8]: last argument - Label loop, entry; - __ mov(ecx, ebx); - __ jmp(&entry); - __ bind(&loop); - __ mov(eax, Operand(edi, ecx, times_pointer_size, 0)); - __ mov(Operand(edx, 0), eax); - __ add(Operand(edx), Immediate(kPointerSize)); - __ bind(&entry); - __ dec(ecx); - __ j(greater_equal, &loop); - - // Remove caller arguments from the stack and return. - // ebx: argc - // esp[0]: JSArray - // esp[4]: return address - // esp[8]: last argument - __ pop(eax); - __ pop(ecx); - __ lea(esp, Operand(esp, ebx, times_pointer_size, 1 * kPointerSize)); - __ push(ecx); - __ ret(0); - - // Restore argc and constructor before running the generic code. - __ bind(&prepare_generic_code_call); - __ pop(eax); - if (construct_call) { - __ pop(edi); - } - __ jmp(call_generic_code); -} - - -void Builtins::Generate_ArrayCode(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- eax : argc - // -- esp[0] : return address - // -- esp[4] : last argument - // ----------------------------------- - Label generic_array_code, one_or_more_arguments, two_or_more_arguments; - - // Get the Array function. - GenerateLoadArrayFunction(masm, edi); - - if (FLAG_debug_code) { - // Initial map for the builtin Array function shoud be a map. - __ mov(ebx, FieldOperand(edi, JSFunction::kPrototypeOrInitialMapOffset)); - // Will both indicate a NULL and a Smi. - __ test(ebx, Immediate(kSmiTagMask)); - __ Assert(not_zero, "Unexpected initial map for Array function"); - __ CmpObjectType(ebx, MAP_TYPE, ecx); - __ Assert(equal, "Unexpected initial map for Array function"); - } - - // Run the native code for the Array function called as a normal function. - ArrayNativeCode(masm, false, &generic_array_code); - - // Jump to the generic array code in case the specialized code cannot handle - // the construction. - __ bind(&generic_array_code); - Code* code = Builtins::builtin(Builtins::ArrayCodeGeneric); - Handle<Code> array_code(code); - __ jmp(array_code, RelocInfo::CODE_TARGET); -} - - -void Builtins::Generate_ArrayConstructCode(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- eax : argc - // -- edi : constructor - // -- esp[0] : return address - // -- esp[4] : last argument - // ----------------------------------- - Label generic_constructor; - - if (FLAG_debug_code) { - // The array construct code is only set for the builtin Array function which - // does always have a map. - GenerateLoadArrayFunction(masm, ebx); - __ cmp(edi, Operand(ebx)); - __ Assert(equal, "Unexpected Array function"); - // Initial map for the builtin Array function should be a map. - __ mov(ebx, FieldOperand(edi, JSFunction::kPrototypeOrInitialMapOffset)); - // Will both indicate a NULL and a Smi. - __ test(ebx, Immediate(kSmiTagMask)); - __ Assert(not_zero, "Unexpected initial map for Array function"); - __ CmpObjectType(ebx, MAP_TYPE, ecx); - __ Assert(equal, "Unexpected initial map for Array function"); - } - - // Run the native code for the Array function called as constructor. - ArrayNativeCode(masm, true, &generic_constructor); - - // Jump to the generic construct code in case the specialized code cannot - // handle the construction. - __ bind(&generic_constructor); - Code* code = Builtins::builtin(Builtins::JSConstructStubGeneric); - Handle<Code> generic_construct_stub(code); - __ jmp(generic_construct_stub, RelocInfo::CODE_TARGET); -} - - -static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) { - __ push(ebp); - __ mov(ebp, Operand(esp)); - - // Store the arguments adaptor context sentinel. - __ push(Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); - - // Push the function on the stack. - __ push(edi); - - // Preserve the number of arguments on the stack. Must preserve both - // eax and ebx because these registers are used when copying the - // arguments and the receiver. - ASSERT(kSmiTagSize == 1); - __ lea(ecx, Operand(eax, eax, times_1, kSmiTag)); - __ push(ecx); -} - - -static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) { - // Retrieve the number of arguments from the stack. - __ mov(ebx, Operand(ebp, ArgumentsAdaptorFrameConstants::kLengthOffset)); - - // Leave the frame. - __ leave(); - - // Remove caller arguments from the stack. - ASSERT(kSmiTagSize == 1 && kSmiTag == 0); - __ pop(ecx); - __ lea(esp, Operand(esp, ebx, times_2, 1 * kPointerSize)); // 1 ~ receiver - __ push(ecx); -} - - -void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- eax : actual number of arguments - // -- ebx : expected number of arguments - // -- edx : code entry to call - // ----------------------------------- - - Label invoke, dont_adapt_arguments; - __ IncrementCounter(&Counters::arguments_adaptors, 1); - - Label enough, too_few; - __ cmp(eax, Operand(ebx)); - __ j(less, &too_few); - __ cmp(ebx, SharedFunctionInfo::kDontAdaptArgumentsSentinel); - __ j(equal, &dont_adapt_arguments); - - { // Enough parameters: Actual >= expected. - __ bind(&enough); - EnterArgumentsAdaptorFrame(masm); - - // Copy receiver and all expected arguments. - const int offset = StandardFrameConstants::kCallerSPOffset; - __ lea(eax, Operand(ebp, eax, times_4, offset)); - __ mov(ecx, -1); // account for receiver - - Label copy; - __ bind(©); - __ inc(ecx); - __ push(Operand(eax, 0)); - __ sub(Operand(eax), Immediate(kPointerSize)); - __ cmp(ecx, Operand(ebx)); - __ j(less, ©); - __ jmp(&invoke); - } - - { // Too few parameters: Actual < expected. - __ bind(&too_few); - EnterArgumentsAdaptorFrame(masm); - - // Copy receiver and all actual arguments. - const int offset = StandardFrameConstants::kCallerSPOffset; - __ lea(edi, Operand(ebp, eax, times_4, offset)); - __ mov(ecx, -1); // account for receiver - - Label copy; - __ bind(©); - __ inc(ecx); - __ push(Operand(edi, 0)); - __ sub(Operand(edi), Immediate(kPointerSize)); - __ cmp(ecx, Operand(eax)); - __ j(less, ©); - - // Fill remaining expected arguments with undefined values. - Label fill; - __ bind(&fill); - __ inc(ecx); - __ push(Immediate(Factory::undefined_value())); - __ cmp(ecx, Operand(ebx)); - __ j(less, &fill); - - // Restore function pointer. - __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); - } - - // Call the entry point. - __ bind(&invoke); - __ call(Operand(edx)); - - // Leave frame and return. - LeaveArgumentsAdaptorFrame(masm); - __ ret(0); - - // ------------------------------------------- - // Dont adapt arguments. - // ------------------------------------------- - __ bind(&dont_adapt_arguments); - __ jmp(Operand(edx)); -} - - -#undef __ - -} } // namespace v8::internal |