Submit builtins-mips.cc.

src/mips/builtins-mips.cc

 // Copyright 2011 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
@@ skipping 29 matching lines @@
 namespace v8 {
 namespace internal {
 
 
 #define __ ACCESS_MASM(masm)
 
 
 void Builtins::Generate_Adaptor(MacroAssembler* masm,
                                 CFunctionId id,
                                 BuiltinExtraArguments extra_args) {
-  UNIMPLEMENTED_MIPS();
+  // ----------- S t a t e -------------
+  //  -- a0                 : number of arguments excluding receiver
+  //  -- a1                 : called function (only guaranteed when
+  //  --                      extra_args requires it)
+  //  -- cp                 : context
+  //  -- sp[0]              : last argument
+  //  -- ...
+  //  -- sp[4 * (argc - 1)] : first argument
+  //  -- sp[4 * agrc]       : receiver
+  // -----------------------------------
+
+  // Insert extra arguments.
+  int num_extra_args = 0;
+  if (extra_args == NEEDS_CALLED_FUNCTION) {
+    num_extra_args = 1;
+    __ push(a1);
+  } else {
+    ASSERT(extra_args == NO_EXTRA_ARGUMENTS);
+  }
+
+  // JumpToExternalReference expects a0 to contain the number of arguments
+  // including the receiver and the extra arguments.
+  __ Addu(a0, a0, Operand(num_extra_args + 1));
+  __ JumpToExternalReference(ExternalReference(id, masm->isolate()));
+}
+
+
+// Load the built-in Array function from the current context.
+static void GenerateLoadArrayFunction(MacroAssembler* masm, Register result) {
+  // Load the global context.
+
+  __ lw(result, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX)));
+  __ lw(result,
+         FieldMemOperand(result, GlobalObject::kGlobalContextOffset));
+  // Load the Array function from the global context.
+  __ lw(result,
+         MemOperand(result,
+                    Context::SlotOffset(Context::ARRAY_FUNCTION_INDEX)));
+}
+
+
+// This constant has the same value as JSArray::kPreallocatedArrayElements and
+// if JSArray::kPreallocatedArrayElements is changed handling of loop unfolding
+// below should be reconsidered.
+static const int kLoopUnfoldLimit = 4;
+
+
+// Allocate an empty JSArray. The allocated array is put into the result
+// register. An elements backing store is allocated with size initial_capacity
+// and filled with the hole values.
+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.
+  __ lw(scratch1, FieldMemOperand(array_function,
+                                  JSFunction::kPrototypeOrInitialMapOffset));
+
+  // Allocate the JSArray object together with space for a fixed array with the
+  // requested elements.
+  int size = JSArray::kSize + 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
+  __ sw(scratch1, FieldMemOperand(result, JSObject::kMapOffset));
+  __ LoadRoot(scratch1, Heap::kEmptyFixedArrayRootIndex);
+  __ sw(scratch1, FieldMemOperand(result, JSArray::kPropertiesOffset));
+  // Field JSArray::kElementsOffset is initialized later.
+  __ mov(scratch3,  zero_reg);
+  __ sw(scratch3, FieldMemOperand(result, JSArray::kLengthOffset));
+
+  // Calculate the location of the elements array and set elements array member
+  // of the JSArray.
+  // result: JSObject
+  // scratch2: start of next object
+  __ Addu(scratch1, result, Operand(JSArray::kSize));
+  __ sw(scratch1, FieldMemOperand(result, JSArray::kElementsOffset));
+
+  // Clear the heap tag on the elements array.
+  __ And(scratch1, scratch1, Operand(~kHeapObjectTagMask));
+
+  // Initialize the FixedArray and fill it with holes. FixedArray length is
+  // stored as a smi.
+  // result: JSObject
+  // scratch1: elements array (untagged)
+  // scratch2: start of next object
+  __ LoadRoot(scratch3, Heap::kFixedArrayMapRootIndex);
+  ASSERT_EQ(0 * kPointerSize, FixedArray::kMapOffset);
+  __ sw(scratch3, MemOperand(scratch1));
+  __ Addu(scratch1, scratch1, kPointerSize);
+  __ li(scratch3,  Operand(Smi::FromInt(initial_capacity)));
+  ASSERT_EQ(1 * kPointerSize, FixedArray::kLengthOffset);
+  __ sw(scratch3, MemOperand(scratch1));
+  __ Addu(scratch1, scratch1, kPointerSize);
+
+  // Fill the FixedArray with the hole value.
+  ASSERT_EQ(2 * kPointerSize, FixedArray::kHeaderSize);
+  ASSERT(initial_capacity <= kLoopUnfoldLimit);
+  __ LoadRoot(scratch3, Heap::kTheHoleValueRootIndex);
+  for (int i = 0; i < initial_capacity; i++) {
+    __ sw(scratch3, MemOperand(scratch1));
+    __ Addu(scratch1, scratch1, kPointerSize);
+  }
+}
+
+
+// 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_storage 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_storage is scratched.
+static void AllocateJSArray(MacroAssembler* masm,
+                            Register array_function,  // Array function.
+                            Register array_size,  // As a smi.
+                            Register result,
+                            Register elements_array_storage,
+                            Register elements_array_end,
+                            Register scratch1,
+                            Register scratch2,
+                            bool fill_with_hole,
+                            Label* gc_required) {
+  Label not_empty, allocated;
+
+  // Load the initial map from the array function.
+  __ lw(elements_array_storage,
+         FieldMemOperand(array_function,
+                         JSFunction::kPrototypeOrInitialMapOffset));
+
+  // Check whether an empty sized array is requested.
+  __ Branch(&not_empty, ne, array_size, Operand(zero_reg));
+
+  // 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(JSArray::kPreallocatedArrayElements);
+  __ AllocateInNewSpace(size,
+                        result,
+                        elements_array_end,
+                        scratch1,
+                        gc_required,
+                        TAG_OBJECT);
+  __ Branch(&allocated);
+
+  // Allocate the JSArray object together with space for a FixedArray with the
+  // requested number of elements.
+  __ bind(&not_empty);
+  ASSERT(kSmiTagSize == 1 && kSmiTag == 0);
+  __ li(elements_array_end,
+        (JSArray::kSize + FixedArray::kHeaderSize) / kPointerSize);
+  __ sra(scratch1, array_size, kSmiTagSize);
+  __ Addu(elements_array_end, elements_array_end, scratch1);
+  __ AllocateInNewSpace(
+      elements_array_end,
+      result,
+      scratch1,
+      scratch2,
+      gc_required,
+      static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS));
+
+  // Allocated the JSArray. Now initialize the fields except for the elements
+  // array.
+  // result: JSObject
+  // elements_array_storage: initial map
+  // array_size: size of array (smi)
+  __ bind(&allocated);
+  __ sw(elements_array_storage, FieldMemOperand(result, JSObject::kMapOffset));
+  __ LoadRoot(elements_array_storage, Heap::kEmptyFixedArrayRootIndex);
+  __ sw(elements_array_storage,
+         FieldMemOperand(result, JSArray::kPropertiesOffset));
+  // Field JSArray::kElementsOffset is initialized later.
+  __ sw(array_size, FieldMemOperand(result, JSArray::kLengthOffset));
+
+  // Calculate the location of the elements array and set elements array member
+  // of the JSArray.
+  // result: JSObject
+  // array_size: size of array (smi)
+  __ Addu(elements_array_storage, result, Operand(JSArray::kSize));
+  __ sw(elements_array_storage,
+         FieldMemOperand(result, JSArray::kElementsOffset));
+
+  // Clear the heap tag on the elements array.
+  __ And(elements_array_storage,
+          elements_array_storage,
+          Operand(~kHeapObjectTagMask));
+  // Initialize the fixed array and fill it with holes. FixedArray length is
+  // stored as a smi.
+  // result: JSObject
+  // elements_array_storage: elements array (untagged)
+  // array_size: size of array (smi)
+  __ LoadRoot(scratch1, Heap::kFixedArrayMapRootIndex);
+  ASSERT_EQ(0 * kPointerSize, FixedArray::kMapOffset);
+  __ sw(scratch1, MemOperand(elements_array_storage));
+  __ Addu(elements_array_storage, elements_array_storage, kPointerSize);
+
+  // Length of the FixedArray is the number of pre-allocated elements if
+  // the actual JSArray has length 0 and the size of the JSArray for non-empty
+  // JSArrays. The length of a FixedArray is stored as a smi.
+  ASSERT(kSmiTag == 0);
+  __ li(at, Operand(Smi::FromInt(JSArray::kPreallocatedArrayElements)));
+  __ movz(array_size, at, array_size);
+
+  ASSERT_EQ(1 * kPointerSize, FixedArray::kLengthOffset);
+  __ sw(array_size, MemOperand(elements_array_storage));
+  __ Addu(elements_array_storage, elements_array_storage, kPointerSize);
+
+  // Calculate elements array and elements array end.
+  // result: JSObject
+  // elements_array_storage: elements array element storage
+  // array_size: smi-tagged size of elements array
+  ASSERT(kSmiTag == 0 && kSmiTagSize < kPointerSizeLog2);
+  __ sll(elements_array_end, array_size, kPointerSizeLog2 - kSmiTagSize);
+  __ Addu(elements_array_end, elements_array_storage, elements_array_end);
+
+  // Fill the allocated FixedArray with the hole value if requested.
+  // result: JSObject
+  // elements_array_storage: elements array element storage
+  // elements_array_end: start of next object
+  if (fill_with_hole) {
+    Label loop, entry;
+    __ LoadRoot(scratch1, Heap::kTheHoleValueRootIndex);
+    __ Branch(&entry);
+    __ bind(&loop);
+    __ sw(scratch1, MemOperand(elements_array_storage));
+    __ Addu(elements_array_storage, elements_array_storage, kPointerSize);
+
+    __ bind(&entry);
+    __ Branch(&loop, lt, elements_array_storage, Operand(elements_array_end));
+  }
+}
+
+
+// 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:
+//   a0: argc
+//   a1: constructor (built-in Array function)
+//   ra: return address
+//   sp[0]: last argument
+// This function is used for both construct and normal calls of Array. The only
+// difference between handling a construct call and a normal call is that for a
+// construct call the constructor function in a1 needs to be preserved for
+// entering the generic code. In both cases argc in a0 needs to be preserved.
+// Both registers are preserved by this code so no need to differentiate between
+// construct call and normal call.
+static void ArrayNativeCode(MacroAssembler* masm,
+                            Label* call_generic_code) {
+  Counters* counters = masm->isolate()->counters();
+  Label argc_one_or_more, argc_two_or_more;
+
+  // Check for array construction with zero arguments or one.
+  __ Branch(&argc_one_or_more, ne, a0, Operand(zero_reg));
+  // Handle construction of an empty array.
+  AllocateEmptyJSArray(masm,
+                       a1,
+                       a2,
+                       a3,
+                       t0,
+                       t1,
+                       JSArray::kPreallocatedArrayElements,
+                       call_generic_code);
+  __ IncrementCounter(counters->array_function_native(), 1, a3, t0);
+  // Setup return value, remove receiver from stack and return.
+  __ mov(v0, a2);
+  __ Addu(sp, sp, Operand(kPointerSize));
+  __ Ret();
+
+  // Check for one argument. Bail out if argument is not smi or if it is
+  // negative.
+  __ bind(&argc_one_or_more);
+  __ Branch(&argc_two_or_more, ne, a0, Operand(1));
+
+  ASSERT(kSmiTag == 0);
+  __ lw(a2, MemOperand(sp));  // Get the argument from the stack.
+  __ And(a3, a2, Operand(kIntptrSignBit | kSmiTagMask));
+  __ Branch(call_generic_code, eq, a3, Operand(zero_reg));
+
+  // Handle construction of an empty array of a certain size. Bail out if size
+  // is too large to actually allocate an elements array.
+  ASSERT(kSmiTag == 0);
+  __ Branch(call_generic_code, ge, a2,
+            Operand(JSObject::kInitialMaxFastElementArray << kSmiTagSize));
+
+  // a0: argc
+  // a1: constructor
+  // a2: array_size (smi)
+  // sp[0]: argument
+  AllocateJSArray(masm,
+                  a1,
+                  a2,
+                  a3,
+                  t0,
+                  t1,
+                  t2,
+                  t3,
+                  true,
+                  call_generic_code);
+  __ IncrementCounter(counters->array_function_native(), 1, a2, t0);
+
+  // Setup return value, remove receiver and argument from stack and return.
+  __ mov(v0, a3);
+  __ Addu(sp, sp, Operand(2 * kPointerSize));
+  __ Ret();
+
+  // Handle construction of an array from a list of arguments.
+  __ bind(&argc_two_or_more);
+  __ sll(a2, a0, kSmiTagSize);  // Convert argc to a smi.
+
+  // a0: argc
+  // a1: constructor
+  // a2: array_size (smi)
+  // sp[0]: last argument
+  AllocateJSArray(masm,
+                  a1,
+                  a2,
+                  a3,
+                  t0,
+                  t1,
+                  t2,
+                  t3,
+                  false,
+                  call_generic_code);
+  __ IncrementCounter(counters->array_function_native(), 1, a2, t2);
+
+  // Fill arguments as array elements. Copy from the top of the stack (last
+  // element) to the array backing store filling it backwards. Note:
+  // elements_array_end points after the backing store.
+  // a0: argc
+  // a3: JSArray
+  // t0: elements_array storage start (untagged)
+  // t1: elements_array_end (untagged)
+  // sp[0]: last argument
+
+  Label loop, entry;
+  __ Branch(&entry);
+  __ bind(&loop);
+  __ pop(a2);
+  __ Addu(t1, t1, -kPointerSize);
+  __ sw(a2, MemOperand(t1));
+  __ bind(&entry);
+  __ Branch(&loop, lt, t0, Operand(t1));
+
+  // Remove caller arguments and receiver from the stack, setup return value and
+  // return.
+  // a0: argc
+  // a3: JSArray
+  // sp[0]: receiver
+  __ Addu(sp, sp, Operand(kPointerSize));
+  __ mov(v0, a3);
+  __ Ret();
 }
 
 
 void Builtins::Generate_ArrayCode(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  // ----------- S t a t e -------------
+  //  -- a0     : number of arguments
+  //  -- ra     : return address
+  //  -- sp[...]: constructor arguments
+  // -----------------------------------
+  Label generic_array_code;
+
+  // Get the Array function.
+  GenerateLoadArrayFunction(masm, a1);
+
+  if (FLAG_debug_code) {
+    // Initial map for the builtin Array functions should be maps.
+    __ lw(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset));
+    __ And(t0, a2, Operand(kSmiTagMask));
+    __ Assert(ne, "Unexpected initial map for Array function (1)",
+              t0, Operand(zero_reg));
+    __ GetObjectType(a2, a3, t0);
+    __ Assert(eq, "Unexpected initial map for Array function (2)",
+              t0, Operand(MAP_TYPE));
+  }
+
+  // Run the native code for the Array function called as a normal function.
+  ArrayNativeCode(masm, &generic_array_code);
+
+  // Jump to the generic array code if the specialized code cannot handle
+  // the construction.
+  __ bind(&generic_array_code);
+
+  Handle<Code> array_code =
+      masm->isolate()->builtins()->ArrayCodeGeneric();
+  __ Jump(array_code, RelocInfo::CODE_TARGET);
 }
 
 
 void Builtins::Generate_ArrayConstructCode(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  // ----------- S t a t e -------------
+  //  -- a0     : number of arguments
+  //  -- a1     : constructor function
+  //  -- ra     : return address
+  //  -- sp[...]: constructor arguments
+  // -----------------------------------
+  Label generic_constructor;
+
+  if (FLAG_debug_code) {
+    // The array construct code is only set for the builtin and internal
+    // Array functions which always have a map.
+    // Initial map for the builtin Array function should be a map.
+    __ lw(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset));
+    __ And(t0, a2, Operand(kSmiTagMask));
+    __ Assert(ne, "Unexpected initial map for Array function (3)",
+              t0, Operand(zero_reg));
+    __ GetObjectType(a2, a3, t0);
+    __ Assert(eq, "Unexpected initial map for Array function (4)",
+              t0, Operand(MAP_TYPE));
+  }
+
+  // Run the native code for the Array function called as a constructor.
+  ArrayNativeCode(masm, &generic_constructor);
+
+  // Jump to the generic construct code in case the specialized code cannot
+  // handle the construction.
+  __ bind(&generic_constructor);
+
+  Handle<Code> generic_construct_stub =
+      masm->isolate()->builtins()->JSConstructStubGeneric();
+  __ Jump(generic_construct_stub, RelocInfo::CODE_TARGET);
 }
 
 
 void Builtins::Generate_StringConstructCode(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  // ----------- S t a t e -------------
+  //  -- a0                     : number of arguments
+  //  -- a1                     : constructor function
+  //  -- ra                     : return address
+  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero based)
+  //  -- sp[argc * 4]           : receiver
+  // -----------------------------------
+  Counters* counters = masm->isolate()->counters();
+  __ IncrementCounter(counters->string_ctor_calls(), 1, a2, a3);
+
+  Register function = a1;
+  if (FLAG_debug_code) {
+    __ LoadGlobalFunction(Context::STRING_FUNCTION_INDEX, a2);
+    __ Assert(eq, "Unexpected String function", function, Operand(a2));
+  }
+
+  // Load the first arguments in a0 and get rid of the rest.
+  Label no_arguments;
+  __ Branch(&no_arguments, eq, a0, Operand(zero_reg));
+  // First args = sp[(argc - 1) * 4].
+  __ Subu(a0, a0, Operand(1));
+  __ sll(a0, a0, kPointerSizeLog2);
+  __ Addu(sp, a0, sp);
+  __ lw(a0, MemOperand(sp));
+  // sp now point to args[0], drop args[0] + receiver.
+  __ Drop(2);
+
+  Register argument = a2;
+  Label not_cached, argument_is_string;
+  NumberToStringStub::GenerateLookupNumberStringCache(
+      masm,
+      a0,        // Input.
+      argument,  // Result.
+      a3,        // Scratch.
+      t0,        // Scratch.
+      t1,        // Scratch.
+      false,     // Is it a Smi?
+      &not_cached);
+  __ IncrementCounter(counters->string_ctor_cached_number(), 1, a3, t0);
+  __ bind(&argument_is_string);
+
+  // ----------- S t a t e -------------
+  //  -- a2     : argument converted to string
+  //  -- a1     : constructor function
+  //  -- ra     : return address
+  // -----------------------------------
+
+  Label gc_required;
+  __ AllocateInNewSpace(JSValue::kSize,
+                        v0,  // Result.
+                        a3,  // Scratch.
+                        t0,  // Scratch.
+                        &gc_required,
+                        TAG_OBJECT);
+
+  // Initialising the String Object.
+  Register map = a3;
+  __ LoadGlobalFunctionInitialMap(function, map, t0);
+  if (FLAG_debug_code) {
+    __ lbu(t0, FieldMemOperand(map, Map::kInstanceSizeOffset));
+    __ Assert(eq, "Unexpected string wrapper instance size",
+        t0, Operand(JSValue::kSize >> kPointerSizeLog2));
+    __ lbu(t0, FieldMemOperand(map, Map::kUnusedPropertyFieldsOffset));
+    __ Assert(eq, "Unexpected unused properties of string wrapper",
+        t0, Operand(zero_reg));
+  }
+  __ sw(map, FieldMemOperand(v0, HeapObject::kMapOffset));
+
+  __ LoadRoot(a3, Heap::kEmptyFixedArrayRootIndex);
+  __ sw(a3, FieldMemOperand(v0, JSObject::kPropertiesOffset));
+  __ sw(a3, FieldMemOperand(v0, JSObject::kElementsOffset));
+
+  __ sw(argument, FieldMemOperand(v0, JSValue::kValueOffset));
+
+  // Ensure the object is fully initialized.
+  STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize);
+
+  __ Ret();
+
+  // The argument was not found in the number to string cache. Check
+  // if it's a string already before calling the conversion builtin.
+  Label convert_argument;
+  __ bind(&not_cached);
+  __ JumpIfSmi(a0, &convert_argument);
+
+  // Is it a String?
+  __ lw(a2, FieldMemOperand(a0, HeapObject::kMapOffset));
+  __ lbu(a3, FieldMemOperand(a2, Map::kInstanceTypeOffset));
+  ASSERT(kNotStringTag != 0);
+  __ And(t0, a3, Operand(kIsNotStringMask));
+  __ Branch(&convert_argument, ne, t0, Operand(zero_reg));
+  __ mov(argument, a0);
+  __ IncrementCounter(counters->string_ctor_conversions(), 1, a3, t0);
+  __ Branch(&argument_is_string);
+
+  // Invoke the conversion builtin and put the result into a2.
+  __ bind(&convert_argument);
+  __ push(function);  // Preserve the function.
+  __ IncrementCounter(counters->string_ctor_conversions(), 1, a3, t0);
+  __ EnterInternalFrame();
+  __ push(v0);
+  __ InvokeBuiltin(Builtins::TO_STRING, CALL_FUNCTION);
+  __ LeaveInternalFrame();
+  __ pop(function);
+  __ mov(argument, v0);
+  __ Branch(&argument_is_string);
+
+  // Load the empty string into a2, remove the receiver from the
+  // stack, and jump back to the case where the argument is a string.
+  __ bind(&no_arguments);
+  __ LoadRoot(argument, Heap::kEmptyStringRootIndex);
+  __ Drop(1);
+  __ Branch(&argument_is_string);
+
+  // At this point the argument is already a string. Call runtime to
+  // create a string wrapper.
+  __ bind(&gc_required);
+  __ IncrementCounter(counters->string_ctor_gc_required(), 1, a3, t0);
+  __ EnterInternalFrame();
+  __ push(argument);
+  __ CallRuntime(Runtime::kNewStringWrapper, 1);
+  __ LeaveInternalFrame();
+  __ Ret();
 }
 
 
 void Builtins::Generate_JSConstructCall(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  // ----------- S t a t e -------------
+  //  -- a0     : number of arguments
+  //  -- a1     : constructor function
+  //  -- ra     : return address
+  //  -- sp[...]: constructor arguments
+  // -----------------------------------
+
+  Label non_function_call;
+  // Check that the function is not a smi.
+  __ And(t0, a1, Operand(kSmiTagMask));
+  __ Branch(&non_function_call, eq, t0, Operand(zero_reg));
+  // Check that the function is a JSFunction.
+  __ GetObjectType(a1, a2, a2);
+  __ Branch(&non_function_call, ne, a2, Operand(JS_FUNCTION_TYPE));
+
+  // Jump to the function-specific construct stub.
+  __ lw(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+  __ lw(a2, FieldMemOperand(a2, SharedFunctionInfo::kConstructStubOffset));
+  __ Addu(t9, a2, Operand(Code::kHeaderSize - kHeapObjectTag));
+  __ Jump(Operand(t9));
+
+  // a0: number of arguments
+  // a1: called object
+  __ bind(&non_function_call);
+  // CALL_NON_FUNCTION expects the non-function constructor as receiver
+  // (instead of the original receiver from the call site). The receiver is
+  // stack element argc.
+  // Set expected number of arguments to zero (not changing a0).
+  __ mov(a2, zero_reg);
+  __ GetBuiltinEntry(a3, Builtins::CALL_NON_FUNCTION_AS_CONSTRUCTOR);
+  __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(),
+          RelocInfo::CODE_TARGET);
+}
+
+
+static void Generate_JSConstructStubHelper(MacroAssembler* masm,
+                                           bool is_api_function,
+                                           bool count_constructions) {
+  // Should never count constructions for api objects.
+  ASSERT(!is_api_function || !count_constructions);
+
+  Isolate* isolate = masm->isolate();
+
+  // ----------- S t a t e -------------
+  //  -- a0     : number of arguments
+  //  -- a1     : constructor function
+  //  -- ra     : return address
+  //  -- sp[...]: constructor arguments
+  // -----------------------------------
+
+  // Enter a construct frame.
+  __ EnterConstructFrame();
+
+  // Preserve the two incoming parameters on the stack.
+  __ sll(a0, a0, kSmiTagSize);  // Tag arguments count.
+  __ MultiPushReversed(a0.bit() | a1.bit());
+
+  // Use t7 to hold undefined, which is used in several places below.
+  __ LoadRoot(t7, Heap::kUndefinedValueRootIndex);
+
+  Label rt_call, allocated;
+  // 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.
+  if (FLAG_inline_new) {
+    Label undo_allocation;
+#ifdef ENABLE_DEBUGGER_SUPPORT
+    ExternalReference debug_step_in_fp =
+        ExternalReference::debug_step_in_fp_address(isolate);
+    __ li(a2, Operand(debug_step_in_fp));
+    __ lw(a2, MemOperand(a2));
+    __ Branch(&rt_call, ne, a2, Operand(zero_reg));
+#endif
+
+    // Load the initial map and verify that it is in fact a map.
+    // a1: constructor function
+    __ lw(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset));
+    __ And(t0, a2, Operand(kSmiTagMask));
+    __ Branch(&rt_call, eq, t0, Operand(zero_reg));
+    __ GetObjectType(a2, a3, t4);
+    __ Branch(&rt_call, ne, t4, Operand(MAP_TYPE));
+
+    // 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.
+    // a1: constructor function
+    // a2: initial map
+    __ lbu(a3, FieldMemOperand(a2, Map::kInstanceTypeOffset));
+    __ Branch(&rt_call, eq, a3, Operand(JS_FUNCTION_TYPE));
+
+    if (count_constructions) {
+      Label allocate;
+      // Decrease generous allocation count.
+      __ lw(a3, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+      MemOperand constructor_count =
+         FieldMemOperand(a3, SharedFunctionInfo::kConstructionCountOffset);
+      __ lbu(t0, constructor_count);
+      __ Subu(t0, t0, Operand(1));
+      __ sb(t0, constructor_count);
+      __ Branch(&allocate, ne, t0, Operand(zero_reg));
+
+      __ Push(a1, a2);
+
+      __ push(a1);  // Constructor.
+      // The call will replace the stub, so the countdown is only done once.
+      __ CallRuntime(Runtime::kFinalizeInstanceSize, 1);
+
+      __ pop(a2);
+      __ pop(a1);
+
+      __ bind(&allocate);
+    }
+
+    // Now allocate the JSObject on the heap.
+    // a1: constructor function
+    // a2: initial map
+    __ lbu(a3, FieldMemOperand(a2, Map::kInstanceSizeOffset));
+    __ AllocateInNewSpace(a3, t4, t5, t6, &rt_call, SIZE_IN_WORDS);
+
+    // Allocated the JSObject, now initialize the fields. Map is set to initial
+    // map and properties and elements are set to empty fixed array.
+    // a1: constructor function
+    // a2: initial map
+    // a3: object size
+    // t4: JSObject (not tagged)
+    __ LoadRoot(t6, Heap::kEmptyFixedArrayRootIndex);
+    __ mov(t5, t4);
+    __ sw(a2, MemOperand(t5, JSObject::kMapOffset));
+    __ sw(t6, MemOperand(t5, JSObject::kPropertiesOffset));
+    __ sw(t6, MemOperand(t5, JSObject::kElementsOffset));
+    __ Addu(t5, t5, Operand(3*kPointerSize));
+    ASSERT_EQ(0 * kPointerSize, JSObject::kMapOffset);
+    ASSERT_EQ(1 * kPointerSize, JSObject::kPropertiesOffset);
+    ASSERT_EQ(2 * kPointerSize, JSObject::kElementsOffset);
+
+    // Fill all the in-object properties with appropriate filler.
+    // a1: constructor function
+    // a2: initial map
+    // a3: object size (in words)
+    // t4: JSObject (not tagged)
+    // t5: First in-object property of JSObject (not tagged)
+    __ sll(t0, a3, kPointerSizeLog2);
+    __ addu(t6, t4, t0);   // End of object.
+    ASSERT_EQ(3 * kPointerSize, JSObject::kHeaderSize);
+    { Label loop, entry;
+      if (count_constructions) {
+        // To allow for truncation.
+        __ LoadRoot(t7, Heap::kOnePointerFillerMapRootIndex);
+      } else {
+        __ LoadRoot(t7, Heap::kUndefinedValueRootIndex);
+      }
+      __ jmp(&entry);
+      __ bind(&loop);
+      __ sw(t7, MemOperand(t5, 0));
+      __ addiu(t5, t5, kPointerSize);
+      __ bind(&entry);
+      __ Branch(&loop, Uless, t5, Operand(t6));
+    }
+
+    // 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.
+    __ Addu(t4, t4, Operand(kHeapObjectTag));
+
+    // Check if a non-empty properties array is needed. Continue with allocated
+    // object if not fall through to runtime call if it is.
+    // a1: constructor function
+    // t4: JSObject
+    // t5: start of next object (not tagged)
+    __ lbu(a3, FieldMemOperand(a2, Map::kUnusedPropertyFieldsOffset));
+    // The field instance sizes contains both pre-allocated property fields and
+    // in-object properties.
+    __ lw(a0, FieldMemOperand(a2, Map::kInstanceSizesOffset));
+    __ And(t6,
+           a0,
+           Operand(0x000000FF << Map::kPreAllocatedPropertyFieldsByte * 8));
+    __ srl(t0, t6, Map::kPreAllocatedPropertyFieldsByte * 8);
+    __ Addu(a3, a3, Operand(t0));
+    __ And(t6, a0, Operand(0x000000FF << Map::kInObjectPropertiesByte * 8));
+    __ srl(t0, t6, Map::kInObjectPropertiesByte * 8);
+    __ subu(a3, a3, t0);
+
+    // Done if no extra properties are to be allocated.
+    __ Branch(&allocated, eq, a3, Operand(zero_reg));
+    __ Assert(greater_equal, "Property allocation count failed.",
+        a3, Operand(zero_reg));
+
+    // Scale the number of elements by pointer size and add the header for
+    // FixedArrays to the start of the next object calculation from above.
+    // a1: constructor
+    // a3: number of elements in properties array
+    // t4: JSObject
+    // t5: start of next object
+    __ Addu(a0, a3, Operand(FixedArray::kHeaderSize / kPointerSize));
+    __ AllocateInNewSpace(
+        a0,
+        t5,
+        t6,
+        a2,
+        &undo_allocation,
+        static_cast<AllocationFlags>(RESULT_CONTAINS_TOP | SIZE_IN_WORDS));
+
+    // Initialize the FixedArray.
+    // a1: constructor
+    // a3: number of elements in properties array (un-tagged)
+    // t4: JSObject
+    // t5: start of next object
+    __ LoadRoot(t6, Heap::kFixedArrayMapRootIndex);
+    __ mov(a2, t5);
+    __ sw(t6, MemOperand(a2, JSObject::kMapOffset));
+    __ sll(a0, a3, kSmiTagSize);
+    __ sw(a0, MemOperand(a2, FixedArray::kLengthOffset));
+    __ Addu(a2, a2, Operand(2 * kPointerSize));
+
+    ASSERT_EQ(0 * kPointerSize, JSObject::kMapOffset);
+    ASSERT_EQ(1 * kPointerSize, FixedArray::kLengthOffset);
+
+    // Initialize the fields to undefined.
+    // a1: constructor
+    // a2: First element of FixedArray (not tagged)
+    // a3: number of elements in properties array
+    // t4: JSObject
+    // t5: FixedArray (not tagged)
+    __ sll(t3, a3, kPointerSizeLog2);
+    __ addu(t6, a2, t3);  // End of object.
+    ASSERT_EQ(2 * kPointerSize, FixedArray::kHeaderSize);
+    { Label loop, entry;
+      if (count_constructions) {
+        __ LoadRoot(t7, Heap::kUndefinedValueRootIndex);
+      } else if (FLAG_debug_code) {
+        __ LoadRoot(t8, Heap::kUndefinedValueRootIndex);
+        __ Assert(eq, "Undefined value not loaded.", t7, Operand(t8));
+      }
+      __ jmp(&entry);
+      __ bind(&loop);
+      __ sw(t7, MemOperand(a2));
+      __ addiu(a2, a2, kPointerSize);
+      __ bind(&entry);
+      __ Branch(&loop, less, a2, Operand(t6));
+    }
+
+    // Store the initialized FixedArray into the properties field of
+    // the JSObject.
+    // a1: constructor function
+    // t4: JSObject
+    // t5: FixedArray (not tagged)
+    __ Addu(t5, t5, Operand(kHeapObjectTag));  // Add the heap tag.
+    __ sw(t5, FieldMemOperand(t4, JSObject::kPropertiesOffset));
+
+    // Continue with JSObject being successfully allocated.
+    // a1: constructor function
+    // a4: 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.
+    // t4: JSObject (previous new top)
+    __ bind(&undo_allocation);
+    __ UndoAllocationInNewSpace(t4, t5);
+  }
+
+  __ bind(&rt_call);
+  // Allocate the new receiver object using the runtime call.
+  // a1: constructor function
+  __ push(a1);  // Argument for Runtime_NewObject.
+  __ CallRuntime(Runtime::kNewObject, 1);
+  __ mov(t4, v0);
+
+  // Receiver for constructor call allocated.
+  // t4: JSObject
+  __ bind(&allocated);
+  __ push(t4);
+
+  // Push the function and the allocated receiver from the stack.
+  // sp[0]: receiver (newly allocated object)
+  // sp[1]: constructor function
+  // sp[2]: number of arguments (smi-tagged)
+  __ lw(a1, MemOperand(sp, kPointerSize));
+  __ MultiPushReversed(a1.bit() | t4.bit());
+
+  // Reload the number of arguments from the stack.
+  // a1: constructor function
+  // sp[0]: receiver
+  // sp[1]: constructor function
+  // sp[2]: receiver
+  // sp[3]: constructor function
+  // sp[4]: number of arguments (smi-tagged)
+  __ lw(a3, MemOperand(sp, 4 * kPointerSize));
+
+  // Setup pointer to last argument.
+  __ Addu(a2, fp, Operand(StandardFrameConstants::kCallerSPOffset));
+
+  // Setup number of arguments for function call below.
+  __ srl(a0, a3, kSmiTagSize);
+
+  // Copy arguments and receiver to the expression stack.
+  // a0: number of arguments
+  // a1: constructor function
+  // a2: address of last argument (caller sp)
+  // a3: number of arguments (smi-tagged)
+  // sp[0]: receiver
+  // sp[1]: constructor function
+  // sp[2]: receiver
+  // sp[3]: constructor function
+  // sp[4]: number of arguments (smi-tagged)
+  Label loop, entry;
+  __ jmp(&entry);
+  __ bind(&loop);
+  __ sll(t0, a3, kPointerSizeLog2 - kSmiTagSize);
+  __ Addu(t0, a2, Operand(t0));
+  __ lw(t1, MemOperand(t0));
+  __ push(t1);
+  __ bind(&entry);
+  __ Addu(a3, a3, Operand(-2));
+  __ Branch(&loop, greater_equal, a3, Operand(zero_reg));
+
+  // Call the function.
+  // a0: number of arguments
+  // a1: constructor function
+  if (is_api_function) {
+    __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
+    Handle<Code> code =
+        masm->isolate()->builtins()->HandleApiCallConstruct();
+    ParameterCount expected(0);
+    __ InvokeCode(code, expected, expected,
+                  RelocInfo::CODE_TARGET, CALL_FUNCTION);
+  } else {
+    ParameterCount actual(a0);
+    __ InvokeFunction(a1, actual, CALL_FUNCTION);
+  }
+
+  // Pop the function from the stack.
+  // v0: result
+  // sp[0]: constructor function
+  // sp[2]: receiver
+  // sp[3]: constructor function
+  // sp[4]: number of arguments (smi-tagged)
+  __ Pop();
+
+  // Restore context from the frame.
+  __ lw(cp, MemOperand(fp, 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.
+  // v0: result
+  // sp[0]: receiver (newly allocated object)
+  // sp[1]: constructor function
+  // sp[2]: number of arguments (smi-tagged)
+  __ And(t0, v0, Operand(kSmiTagMask));
+  __ Branch(&use_receiver, eq, t0, Operand(zero_reg));
+
+  // 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.
+  __ GetObjectType(v0, a3, a3);
+  __ Branch(&exit, greater_equal, a3, Operand(FIRST_JS_OBJECT_TYPE));
+
+  // Throw away the result of the constructor invocation and use the
+  // on-stack receiver as the result.
+  __ bind(&use_receiver);
+  __ lw(v0, MemOperand(sp));
+
+  // Remove receiver from the stack, remove caller arguments, and
+  // return.
+  __ bind(&exit);
+  // v0: result
+  // sp[0]: receiver (newly allocated object)
+  // sp[1]: constructor function
+  // sp[2]: number of arguments (smi-tagged)
+  __ lw(a1, MemOperand(sp, 2 * kPointerSize));
+  __ LeaveConstructFrame();
+  __ sll(t0, a1, kPointerSizeLog2 - 1);
+  __ Addu(sp, sp, t0);
+  __ Addu(sp, sp, kPointerSize);
+  __ IncrementCounter(isolate->counters()->constructed_objects(), 1, a1, a2);
+  __ Ret();
 }
 
 
 void Builtins::Generate_JSConstructStubCountdown(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  Generate_JSConstructStubHelper(masm, false, true);
 }
 
 
 void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  Generate_JSConstructStubHelper(masm, false, false);
 }
 
 
 void Builtins::Generate_JSConstructStubApi(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  Generate_JSConstructStubHelper(masm, true, false);
+}
+
+
+static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm,
+                                             bool is_construct) {
+  // Called from JSEntryStub::GenerateBody
+
+  // ----------- S t a t e -------------
+  //  -- a0: code entry
+  //  -- a1: function
+  //  -- a2: reveiver_pointer
+  //  -- a3: argc
+  //  -- s0: argv
+  // -----------------------------------
+
+  // Clear the context before we push it when entering the JS frame.
+  __ mov(cp, zero_reg);
+
+  // Enter an internal frame.
+  __ EnterInternalFrame();
+
+  // Set up the context from the function argument.
+  __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
+
+  // Set up the roots register.
+  ExternalReference roots_address =
+      ExternalReference::roots_address(masm->isolate());
+  __ li(s6, Operand(roots_address));
+
+  // Push the function and the receiver onto the stack.
+  __ Push(a1, a2);
+
+  // Copy arguments to the stack in a loop.
+  // a3: argc
+  // s0: argv, ie points to first arg
+  Label loop, entry;
+  __ sll(t0, a3, kPointerSizeLog2);
+  __ addu(t2, s0, t0);
+  __ b(&entry);
+  __ nop();   // Branch delay slot nop.
+  // t2 points past last arg.
+  __ bind(&loop);
+  __ lw(t0, MemOperand(s0));  // Read next parameter.
+  __ addiu(s0, s0, kPointerSize);
+  __ lw(t0, MemOperand(t0));  // Dereference handle.
+  __ push(t0);  // Push parameter.
+  __ bind(&entry);
+  __ Branch(&loop, ne, s0, Operand(t2));
+
+  // Initialize all JavaScript callee-saved registers, since they will be seen
+  // by the garbage collector as part of handlers.
+  __ LoadRoot(t0, Heap::kUndefinedValueRootIndex);
+  __ mov(s1, t0);
+  __ mov(s2, t0);
+  __ mov(s3, t0);
+  __ mov(s4, t0);
+  __ mov(s5, t0);
+  // s6 holds the root address. Do not clobber.
+  // s7 is cp. Do not init.
+
+  // Invoke the code and pass argc as a0.
+  __ mov(a0, a3);
+  if (is_construct) {
+    __ Call(masm->isolate()->builtins()->JSConstructCall(),
+            RelocInfo::CODE_TARGET);
+  } else {
+    ParameterCount actual(a0);
+    __ InvokeFunction(a1, actual, CALL_FUNCTION);
+  }
+
+  __ LeaveInternalFrame();
+
+  __ Jump(ra);
 }
 
 
 void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  Generate_JSEntryTrampolineHelper(masm, false);
 }
 
 
 void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  Generate_JSEntryTrampolineHelper(masm, true);
 }
 
 
 void Builtins::Generate_LazyCompile(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  // Enter an internal frame.
+  __ EnterInternalFrame();
+
+  // Preserve the function.
+  __ push(a1);
+
+  // Push the function on the stack as the argument to the runtime function.
+  __ push(a1);
+  // Call the runtime function.
+  __ CallRuntime(Runtime::kLazyCompile, 1);
+  // Calculate the entry point.
+  __ addiu(t9, v0, Code::kHeaderSize - kHeapObjectTag);
+  // Restore saved function.
+  __ pop(a1);
+
+  // Tear down temporary frame.
+  __ LeaveInternalFrame();
+
+  // Do a tail-call of the compiled function.
+  __ Jump(t9);
 }
 
 
 void Builtins::Generate_LazyRecompile(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
-}
-
-
+  // Enter an internal frame.
+  __ EnterInternalFrame();
+
+  // Preserve the function.
+  __ push(a1);
+
+  // Push the function on the stack as the argument to the runtime function.
+  __ push(a1);
+  __ CallRuntime(Runtime::kLazyRecompile, 1);
+  // Calculate the entry point.
+  __ Addu(t9, v0, Operand(Code::kHeaderSize - kHeapObjectTag));
+  // Restore saved function.
+  __ pop(a1);
+
+  // Tear down temporary frame.
+  __ LeaveInternalFrame();
+
+  // Do a tail-call of the compiled function.
+  __ Jump(t9);
+}
+
+
+// These functions are called from C++ but cannot be used in live code.
 void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  __ Abort("Call to unimplemented function in builtins-mips.cc");
 }
 
 
 void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  __ Abort("Call to unimplemented function in builtins-mips.cc");
 }
 
 
 void Builtins::Generate_NotifyOSR(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  __ Abort("Call to unimplemented function in builtins-mips.cc");
 }
 
 
 void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  __ Abort("Call to unimplemented function in builtins-mips.cc");
 }
 
 
 void Builtins::Generate_FunctionCall(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  // 1. Make sure we have at least one argument.
+  // a0: actual number of arguments
+  { Label done;
+    __ Branch(&done, ne, a0, Operand(zero_reg));
+    __ LoadRoot(t2, Heap::kUndefinedValueRootIndex);
+    __ push(t2);
+    __ Addu(a0, a0, Operand(1));
+    __ bind(&done);
+  }
+
+  // 2. Get the function to call (passed as receiver) from the stack, check
+  //    if it is a function.
+  // a0: actual number of arguments
+  Label non_function;
+  __ sll(at, a0, kPointerSizeLog2);
+  __ addu(at, sp, at);
+  __ lw(a1, MemOperand(at));
+  __ And(at, a1, Operand(kSmiTagMask));
+  __ Branch(&non_function, eq, at, Operand(zero_reg));
+  __ GetObjectType(a1, a2, a2);
+  __ Branch(&non_function, ne, a2, Operand(JS_FUNCTION_TYPE));
+
+  // 3a. Patch the first argument if necessary when calling a function.
+  // a0: actual number of arguments
+  // a1: function
+  Label shift_arguments;
+  { Label convert_to_object, use_global_receiver, patch_receiver;
+    // Change context eagerly in case we need the global receiver.
+    __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
+
+    // Do not transform the receiver for strict mode functions.
+    __ lw(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+    __ lw(a3, FieldMemOperand(a2, SharedFunctionInfo::kCompilerHintsOffset));
+    __ And(t0, a3, Operand(1 << (SharedFunctionInfo::kStrictModeFunction +
+                                 kSmiTagSize)));
+    __ Branch(&shift_arguments, ne, t0, Operand(zero_reg));
+
+    // Do not transform the receiver for native (shared already in r2).
+    __ lw(a2, FieldMemOperand(a2, SharedFunctionInfo::kScriptOffset));
+    __ LoadRoot(a3, Heap::kUndefinedValueRootIndex);
+    __ Branch(&shift_arguments, eq, a2, Operand(a3));
+    __ lw(a2, FieldMemOperand(a2, Script::kTypeOffset));
+    __ sra(a2, a2, kSmiTagSize);
+    __ Branch(&shift_arguments, eq, a2, Operand(Script::TYPE_NATIVE));
+
+    // Compute the receiver in non-strict mode.
+    // Load first argument in a2. a2 = -kPointerSize(sp + n_args << 2).
+    __ sll(at, a0, kPointerSizeLog2);
+    __ addu(a2, sp, at);
+    __ lw(a2, MemOperand(a2, -kPointerSize));
+    // a0: actual number of arguments
+    // a1: function
+    // a2: first argument
+    __ JumpIfSmi(a2, &convert_to_object, t2);
+
+    // Heap::kUndefinedValueRootIndex is already in a3.
+    __ Branch(&use_global_receiver, eq, a2, Operand(a3));
+    __ LoadRoot(a3, Heap::kNullValueRootIndex);
+    __ Branch(&use_global_receiver, eq, a2, Operand(a3));
+
+    __ GetObjectType(a2, a3, a3);
+    __ Branch(&convert_to_object, lt, a3, Operand(FIRST_JS_OBJECT_TYPE));
+    __ Branch(&shift_arguments, le, a3, Operand(LAST_JS_OBJECT_TYPE));
+
+    __ bind(&convert_to_object);
+    __ EnterInternalFrame();  // In order to preserve argument count.
+    __ sll(a0, a0, kSmiTagSize);  // Smi tagged.
+    __ push(a0);
+
+    __ push(a2);
+    __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
+    __ mov(a2, v0);
+
+    __ pop(a0);
+    __ sra(a0, a0, kSmiTagSize);  // Un-tag.
+    __ LeaveInternalFrame();
+    // Restore the function to a1.
+    __ sll(at, a0, kPointerSizeLog2);
+    __ addu(at, sp, at);
+    __ lw(a1, MemOperand(at));
+    __ Branch(&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;
+    __ lw(a2, FieldMemOperand(cp, kGlobalIndex));
+    __ lw(a2, FieldMemOperand(a2, GlobalObject::kGlobalContextOffset));
+    __ lw(a2, FieldMemOperand(a2, kGlobalIndex));
+    __ lw(a2, FieldMemOperand(a2, GlobalObject::kGlobalReceiverOffset));
+
+    __ bind(&patch_receiver);
+    __ sll(at, a0, kPointerSizeLog2);
+    __ addu(a3, sp, at);
+    __ sw(a2, MemOperand(a3, -kPointerSize));
+
+    __ Branch(&shift_arguments);
+  }
+
+  // 3b. Patch the first argument when calling a non-function.  The
+  //     CALL_NON_FUNCTION builtin expects the non-function callee as
+  //     receiver, so overwrite the first argument which will ultimately
+  //     become the receiver.
+  // a0: actual number of arguments
+  // a1: function
+  __ bind(&non_function);
+  // Restore the function in case it has been modified.
+  __ sll(at, a0, kPointerSizeLog2);
+  __ addu(a2, sp, at);
+  __ sw(a1, MemOperand(a2, -kPointerSize));
+  // Clear a1 to indicate a non-function being called.
+  __ mov(a1, zero_reg);
+
+  // 4. Shift arguments and return address one slot down on the stack
+  //    (overwriting the original receiver).  Adjust argument count to make
+  //    the original first argument the new receiver.
+  // a0: actual number of arguments
+  // a1: function
+  __ bind(&shift_arguments);
+  { Label loop;
+    // Calculate the copy start address (destination). Copy end address is sp.
+    __ sll(at, a0, kPointerSizeLog2);
+    __ addu(a2, sp, at);
+
+    __ bind(&loop);
+    __ lw(at, MemOperand(a2, -kPointerSize));
+    __ sw(at, MemOperand(a2));
+    __ Subu(a2, a2, Operand(kPointerSize));
+    __ Branch(&loop, ne, a2, Operand(sp));
+    // Adjust the actual number of arguments and remove the top element
+    // (which is a copy of the last argument).
+    __ Subu(a0, a0, Operand(1));
+    __ Pop();
+  }
+
+  // 5a. Call non-function via tail call to CALL_NON_FUNCTION builtin.
+  // a0: actual number of arguments
+  // a1: function
+  { Label function;
+    __ Branch(&function, ne, a1, Operand(zero_reg));
+    __ mov(a2, zero_reg);  // expected arguments is 0 for CALL_NON_FUNCTION
+    __ GetBuiltinEntry(a3, Builtins::CALL_NON_FUNCTION);
+    __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(),
+            RelocInfo::CODE_TARGET);
+    __ bind(&function);
+  }
+
+  // 5b. Get the code to call from the function and check that the number of
+  //     expected arguments matches what we're providing.  If so, jump
+  //     (tail-call) to the code in register edx without checking arguments.
+  // a0: actual number of arguments
+  // a1: function
+  __ lw(a3, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+  __ lw(a2,
+         FieldMemOperand(a3, SharedFunctionInfo::kFormalParameterCountOffset));
+  __ sra(a2, a2, kSmiTagSize);
+  __ lw(a3, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
+  // Check formal and actual parameter counts.
+  __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(),
+          RelocInfo::CODE_TARGET, ne, a2, Operand(a0));
+
+  ParameterCount expected(0);
+  __ InvokeCode(a3, expected, expected, JUMP_FUNCTION);
 }
 
 
 void Builtins::Generate_FunctionApply(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
+  const int kIndexOffset    = -5 * kPointerSize;
+  const int kLimitOffset    = -4 * kPointerSize;
+  const int kArgsOffset     =  2 * kPointerSize;
+  const int kRecvOffset     =  3 * kPointerSize;
+  const int kFunctionOffset =  4 * kPointerSize;
+
+  __ EnterInternalFrame();
+
+  __ lw(a0, MemOperand(fp, kFunctionOffset));  // Get the function.
+  __ push(a0);
+  __ lw(a0, MemOperand(fp, kArgsOffset));  // Get the args array.
+  __ push(a0);
+  // Returns (in v0) number of arguments to copy to stack as Smi.
+  __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_FUNCTION);
+
+  // Check the stack for overflow. We are not trying need to catch
+  // interruptions (e.g. debug break and preemption) here, so the "real stack
+  // limit" is checked.
+  Label okay;
+  __ LoadRoot(a2, Heap::kRealStackLimitRootIndex);
+  // Make a2 the space we have left. The stack might already be overflowed
+  // here which will cause a2 to become negative.
+  __ subu(a2, sp, a2);
+  // Check if the arguments will overflow the stack.
+  __ sll(t0, v0, kPointerSizeLog2 - kSmiTagSize);
+  __ Branch(&okay, gt, a2, Operand(t0));  // Signed comparison.
+
+  // Out of stack space.
+  __ lw(a1, MemOperand(fp, kFunctionOffset));
+  __ push(a1);
+  __ push(v0);
+  __ InvokeBuiltin(Builtins::APPLY_OVERFLOW, CALL_FUNCTION);
+  // End of stack check.
+
+  // Push current limit and index.
+  __ bind(&okay);
+  __ push(v0);  // Limit.
+  __ mov(a1, zero_reg);  // Initial index.
+  __ push(a1);
+
+  // Change context eagerly to get the right global object if necessary.
+  __ lw(a0, MemOperand(fp, kFunctionOffset));
+  __ lw(cp, FieldMemOperand(a0, JSFunction::kContextOffset));
+  // Load the shared function info while the function is still in a0.
+  __ lw(a1, FieldMemOperand(a0, JSFunction::kSharedFunctionInfoOffset));
+
+  // Compute the receiver.
+  Label call_to_object, use_global_receiver, push_receiver;
+  __ lw(a0, MemOperand(fp, kRecvOffset));
+
+  // Do not transform the receiver for strict mode functions.
+  __ lw(a2, FieldMemOperand(a1, SharedFunctionInfo::kCompilerHintsOffset));
+  __ And(t0, a2, Operand(1 << (SharedFunctionInfo::kStrictModeFunction +
+                               kSmiTagSize)));
+  __ Branch(&push_receiver, ne, t0, Operand(zero_reg));
+
+  // Do not transform the receiver for native (shared already in a1).
+  __ lw(a1, FieldMemOperand(a1, SharedFunctionInfo::kScriptOffset));
+  __ LoadRoot(a2, Heap::kUndefinedValueRootIndex);
+  __ Branch(&push_receiver, eq, a1, Operand(a2));
+  __ lw(a1, FieldMemOperand(a1, Script::kTypeOffset));
+  __ sra(a1, a1, kSmiTagSize);
+  __ Branch(&push_receiver, eq, a1, Operand(Script::TYPE_NATIVE));
+
+  // Compute the receiver in non-strict mode.
+  __ And(t0, a0, Operand(kSmiTagMask));
+  __ Branch(&call_to_object, eq, t0, Operand(zero_reg));
+  __ LoadRoot(a1, Heap::kNullValueRootIndex);
+  __ Branch(&use_global_receiver, eq, a0, Operand(a1));
+  // Heap::kUndefinedValueRootIndex is already in a2.
+  __ Branch(&use_global_receiver, eq, a0, Operand(a2));
+
+  // Check if the receiver is already a JavaScript object.
+  // a0: receiver
+  __ GetObjectType(a0, a1, a1);
+  __ Branch(&call_to_object, lt, a1, Operand(FIRST_JS_OBJECT_TYPE));
+  __ Branch(&push_receiver, le, a1, Operand(LAST_JS_OBJECT_TYPE));
+
+  // Convert the receiver to a regular object.
+  // a0: receiver
+  __ bind(&call_to_object);
+  __ push(a0);
+  __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
+  __ mov(a0, v0);  // Put object in a0 to match other paths to push_receiver.
+  __ Branch(&push_receiver);
+
+  // Use the current global receiver object as the receiver.
+  __ bind(&use_global_receiver);
+  const int kGlobalOffset =
+      Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize;
+  __ lw(a0, FieldMemOperand(cp, kGlobalOffset));
+  __ lw(a0, FieldMemOperand(a0, GlobalObject::kGlobalContextOffset));
+  __ lw(a0, FieldMemOperand(a0, kGlobalOffset));
+  __ lw(a0, FieldMemOperand(a0, GlobalObject::kGlobalReceiverOffset));
+
+  // Push the receiver.
+  // a0: receiver
+  __ bind(&push_receiver);
+  __ push(a0);
+
+  // Copy all arguments from the array to the stack.
+  Label entry, loop;
+  __ lw(a0, MemOperand(fp, kIndexOffset));
+  __ Branch(&entry);
+
+  // Load the current argument from the arguments array and push it to the
+  // stack.
+  // a0: current argument index
+  __ bind(&loop);
+  __ lw(a1, MemOperand(fp, kArgsOffset));
+  __ push(a1);
+  __ push(a0);
+
+  // Call the runtime to access the property in the arguments array.
+  __ CallRuntime(Runtime::kGetProperty, 2);
+  __ push(v0);
+
+  // Use inline caching to access the arguments.
+  __ lw(a0, MemOperand(fp, kIndexOffset));
+  __ Addu(a0, a0, Operand(1 << kSmiTagSize));
+  __ sw(a0, MemOperand(fp, kIndexOffset));
+
+  // Test if the copy loop has finished copying all the elements from the
+  // arguments object.
+  __ bind(&entry);
+  __ lw(a1, MemOperand(fp, kLimitOffset));
+  __ Branch(&loop, ne, a0, Operand(a1));
+  // Invoke the function.
+  ParameterCount actual(a0);
+  __ sra(a0, a0, kSmiTagSize);
+  __ lw(a1, MemOperand(fp, kFunctionOffset));
+  __ InvokeFunction(a1, actual, CALL_FUNCTION);
+
+  // Tear down the internal frame and remove function, receiver and args.
+  __ LeaveInternalFrame();
+  __ Addu(sp, sp, Operand(3 * kPointerSize));
+  __ Ret();
+}
+
+
+static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) {
+  __ sll(a0, a0, kSmiTagSize);
+  __ li(t0, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
+  __ MultiPush(a0.bit() | a1.bit() | t0.bit() | fp.bit() | ra.bit());
+  __ Addu(fp, sp, Operand(3 * kPointerSize));
+}
+
+
+static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  //  -- v0 : result being passed through
+  // -----------------------------------
+  // Get the number of arguments passed (as a smi), tear down the frame and
+  // then tear down the parameters.
+  __ lw(a1, MemOperand(fp, -3 * kPointerSize));
+  __ mov(sp, fp);
+  __ MultiPop(fp.bit() | ra.bit());
+  __ sll(t0, a1, kPointerSizeLog2 - kSmiTagSize);
+  __ Addu(sp, sp, t0);
+  // Adjust for the receiver.
+  __ Addu(sp, sp, Operand(kPointerSize));
 }
 
 
 void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
-  UNIMPLEMENTED_MIPS();
-}
-
-
+  // State setup as expected by MacroAssembler::InvokePrologue.
+  // ----------- S t a t e -------------
+  //  -- a0: actual arguments count
+  //  -- a1: function (passed through to callee)
+  //  -- a2: expected arguments count
+  //  -- a3: callee code entry
+  // -----------------------------------
+
+  Label invoke, dont_adapt_arguments;
+
+  Label enough, too_few;
+  __ Branch(&dont_adapt_arguments, eq,
+      a2, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel));
+  // We use Uless as the number of argument should always be greater than 0.
+  __ Branch(&too_few, Uless, a0, Operand(a2));
+
+  {  // Enough parameters: actual >= expected.
+    // a0: actual number of arguments as a smi
+    // a1: function
+    // a2: expected number of arguments
+    // a3: code entry to call
+    __ bind(&enough);
+    EnterArgumentsAdaptorFrame(masm);
+
+    // Calculate copy start address into a0 and copy end address into a2.
+    __ sll(a0, a0, kPointerSizeLog2 - kSmiTagSize);
+    __ Addu(a0, fp, a0);
+    // Adjust for return address and receiver.
+    __ Addu(a0, a0, Operand(2 * kPointerSize));
+    // Compute copy end address.
+    __ sll(a2, a2, kPointerSizeLog2);
+    __ subu(a2, a0, a2);
+
+    // Copy the arguments (including the receiver) to the new stack frame.
+    // a0: copy start address
+    // a1: function
+    // a2: copy end address
+    // a3: code entry to call
+
+    Label copy;
+    __ bind(&copy);
+    __ lw(t0, MemOperand(a0));
+    __ push(t0);
+    __ Branch(USE_DELAY_SLOT, &copy, ne, a0, Operand(a2));
+    __ addiu(a0, a0, -kPointerSize);  // In delay slot.
+
+    __ jmp(&invoke);
+  }
+
+  {  // Too few parameters: Actual < expected.
+    __ bind(&too_few);
+    EnterArgumentsAdaptorFrame(masm);
+
+    // TODO(MIPS): Optimize these loops.
+
+    // Calculate copy start address into a0 and copy end address is fp.
+    // a0: actual number of arguments as a smi
+    // a1: function
+    // a2: expected number of arguments
+    // a3: code entry to call
+    __ sll(a0, a0, kPointerSizeLog2 - kSmiTagSize);
+    __ Addu(a0, fp, a0);
+    // Adjust for return address and receiver.
+    __ Addu(a0, a0, Operand(2 * kPointerSize));
+    // Compute copy end address. Also adjust for return address.
+    __ Addu(t1, fp, kPointerSize);
+
+    // Copy the arguments (including the receiver) to the new stack frame.
+    // a0: copy start address
+    // a1: function
+    // a2: expected number of arguments
+    // a3: code entry to call
+    // t1: copy end address
+    Label copy;
+    __ bind(&copy);
+    __ lw(t0, MemOperand(a0));  // Adjusted above for return addr and receiver.
+    __ push(t0);
+    __ Subu(a0, a0, kPointerSize);
+    __ Branch(&copy, ne, a0, Operand(t1));
+
+    // Fill the remaining expected arguments with undefined.
+    // a1: function
+    // a2: expected number of arguments
+    // a3: code entry to call
+    __ LoadRoot(t0, Heap::kUndefinedValueRootIndex);
+    __ sll(t2, a2, kPointerSizeLog2);
+    __ Subu(a2, fp, Operand(t2));
+    __ Addu(a2, a2, Operand(-4 * kPointerSize));  // Adjust for frame.
+
+    Label fill;
+    __ bind(&fill);
+    __ push(t0);
+    __ Branch(&fill, ne, sp, Operand(a2));
+  }
+
+  // Call the entry point.
+  __ bind(&invoke);
+
+  __ Call(a3);
+
+  // Exit frame and return.
+  LeaveArgumentsAdaptorFrame(masm);
+  __ Ret();
+
+
+  // -------------------------------------------
+  // Don't adapt arguments.
+  // -------------------------------------------
+  __ bind(&dont_adapt_arguments);
+  __ Jump(a3);
+}
+
+
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS