Move backend specific files to separate directories.

src/ia32/builtins-ia32.cc

Index: src/ia32/builtins-ia32.cc
diff --git a/src/ia32/builtins-ia32.cc b/src/ia32/builtins-ia32.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9baeb5ec0eb0c3adacec289f78860b05a751678a
--- /dev/null
+++ b/src/ia32/builtins-ia32.cc
@@ -0,0 +1,758 @@
+// Copyright 2006-2008 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(1238487): 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 JumpToBuiltin expects eax to contain the number of
+  // arguments including the receiver.
+  __ inc(eax);
+  __ JumpToBuiltin(ExternalReference(id));
+}
+
+
+void Builtins::Generate_JSConstructCall(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  //  -- eax: number of arguments
+  //  -- edi: constructor function
+  // -----------------------------------
+
+  // 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
+    // Check that function is not a Smi.
+    __ test(edi, Immediate(kSmiTagMask));
+    __ j(zero, &rt_call);
+    // Check that function is a JSFunction
+    __ CmpObjectType(edi, JS_FUNCTION_TYPE, eax);
+    __ j(not_equal, &rt_call);
+
+    // 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);
+    // Make sure that the maximum heap object size will never cause us
+    // problem here, because it is always greater than the maximum
+    // instance size that can be represented in a byte.
+    ASSERT(Heap::MaxHeapObjectSize() >= (1 << kBitsPerByte));
+    ExternalReference new_space_allocation_top =
+        ExternalReference::new_space_allocation_top_address();
+    __ mov(ebx, Operand::StaticVariable(new_space_allocation_top));
+    __ add(edi, Operand(ebx));  // Calculate new top
+    ExternalReference new_space_allocation_limit =
+        ExternalReference::new_space_allocation_limit_address();
+    __ cmp(edi, Operand::StaticVariable(new_space_allocation_limit));
+    __ j(greater_equal, &rt_call);
+    // 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);
+    }
+
+    // Mostly done with the JSObject. Add the heap tag and store the new top, so
+    // that we can continue and jump into the continuation code at any time from
+    // now on. Any failures need to undo the setting of the new top, 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));
+    __ mov(Operand::StaticVariable(new_space_allocation_top), edi);
+
+    // Check if a properties array should be setup and allocate one if needed.
+    // Otherwise initialize the properties to the empty_fixed_array as well.
+    // eax: initial map
+    // ebx: JSObject
+    // edi: start of next object
+    __ movzx_b(edx, FieldOperand(eax, Map::kUnusedPropertyFieldsOffset));
+    __ movzx_b(ecx, FieldOperand(eax, Map::kInObjectPropertiesOffset));
+    // Calculate unused properties past the end of the in-object properties.
+    __ sub(edx, Operand(ecx));
+    __ test(edx, Operand(edx));
+    // Done if no extra properties are to be allocated.
+    __ j(zero, &allocated);
+
+    // Scale the number of elements by pointer size and add the header for
+    // FixedArrays to the start of the next object calculation from above.
+    // eax: initial map
+    // ebx: JSObject
+    // edi: start of next object (will be start of FixedArray)
+    // edx: number of elements in properties array
+    ASSERT(Heap::MaxHeapObjectSize() >
+           (FixedArray::kHeaderSize + 255*kPointerSize));
+    __ lea(ecx, Operand(edi, edx, times_4, FixedArray::kHeaderSize));
+    __ cmp(ecx, Operand::StaticVariable(new_space_allocation_limit));
+    __ j(greater_equal, &undo_allocation);
+    __ mov(Operand::StaticVariable(new_space_allocation_top), ecx);
+
+    // 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(less, &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);
+    __ xor_(Operand(ebx), Immediate(kHeapObjectTag));  // clear the heap tag
+    __ mov(Operand::StaticVariable(new_space_allocation_top), ebx);
+  }
+
+  // Allocate the new receiver object using the runtime call.
+  // edi: function (constructor)
+  __ bind(&rt_call);
+  // Must restore edi (constructor) before calling runtime.
+  __ mov(edi, Operand(esp, 0));
+  __ 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);
+  __ 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
+}
+
+
+static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) {
+  __ push(ebp);
+  __ mov(ebp, Operand(esp));
+
+  // Store the arguments adaptor context sentinel.
+  __ push(Immediate(ArgumentsAdaptorFrame::SENTINEL));
+
+  // 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(&copy);
+    __ inc(ecx);
+    __ push(Operand(eax, 0));
+    __ sub(Operand(eax), Immediate(kPointerSize));
+    __ cmp(ecx, Operand(ebx));
+    __ j(less, &copy);
+    __ 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(&copy);
+    __ inc(ecx);
+    __ push(Operand(edi, 0));
+    __ sub(Operand(edi), Immediate(kPointerSize));
+    __ cmp(ecx, Operand(eax));
+    __ j(less, &copy);
+
+    // 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