Merge bleeding edge into the GC branch up to 7948. The asserts

src/mips/stub-cache-mips.cc

-// Copyright 2010 the V8 project authors. All rights reserved.
+// 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
 //       with the distribution.
@@ skipping 11 matching lines @@
 // 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"
 
 #if defined(V8_TARGET_ARCH_MIPS)
 
 #include "ic-inl.h"
-#include "codegen-inl.h"
+#include "codegen.h"
 #include "stub-cache.h"
 
 namespace v8 {
 namespace internal {
 
 #define __ ACCESS_MASM(masm)
 
 
+static void ProbeTable(Isolate* isolate,
+                       MacroAssembler* masm,
+                       Code::Flags flags,
+                       StubCache::Table table,
+                       Register name,
+                       Register offset,
+                       Register scratch,
+                       Register scratch2) {
+  ExternalReference key_offset(isolate->stub_cache()->key_reference(table));
+  ExternalReference value_offset(isolate->stub_cache()->value_reference(table));
+
+  uint32_t key_off_addr = reinterpret_cast<uint32_t>(key_offset.address());
+  uint32_t value_off_addr = reinterpret_cast<uint32_t>(value_offset.address());
+
+  // Check the relative positions of the address fields.
+  ASSERT(value_off_addr > key_off_addr);
+  ASSERT((value_off_addr - key_off_addr) % 4 == 0);
+  ASSERT((value_off_addr - key_off_addr) < (256 * 4));
+
+  Label miss;
+  Register offsets_base_addr = scratch;
+
+  // Check that the key in the entry matches the name.
+  __ li(offsets_base_addr, Operand(key_offset));
+  __ sll(scratch2, offset, 1);
+  __ addu(scratch2, offsets_base_addr, scratch2);
+  __ lw(scratch2, MemOperand(scratch2));
+  __ Branch(&miss, ne, name, Operand(scratch2));
+
+  // Get the code entry from the cache.
+  __ Addu(offsets_base_addr, offsets_base_addr,
+         Operand(value_off_addr - key_off_addr));
+  __ sll(scratch2, offset, 1);
+  __ addu(scratch2, offsets_base_addr, scratch2);
+  __ lw(scratch2, MemOperand(scratch2));
+
+  // Check that the flags match what we're looking for.
+  __ lw(scratch2, FieldMemOperand(scratch2, Code::kFlagsOffset));
+  __ And(scratch2, scratch2, Operand(~Code::kFlagsNotUsedInLookup));
+  __ Branch(&miss, ne, scratch2, Operand(flags));
+
+  // Re-load code entry from cache.
+  __ sll(offset, offset, 1);
+  __ addu(offset, offset, offsets_base_addr);
+  __ lw(offset, MemOperand(offset));
+
+  // Jump to the first instruction in the code stub.
+  __ Addu(offset, offset, Operand(Code::kHeaderSize - kHeapObjectTag));
+  __ Jump(offset);
+
+  // Miss: fall through.
+  __ bind(&miss);
+}
+
+
+// Helper function used to check that the dictionary doesn't contain
+// the property. This function may return false negatives, so miss_label
+// must always call a backup property check that is complete.
+// This function is safe to call if the receiver has fast properties.
+// Name must be a symbol and receiver must be a heap object.
+MUST_USE_RESULT static MaybeObject* GenerateDictionaryNegativeLookup(
+    MacroAssembler* masm,
+    Label* miss_label,
+    Register receiver,
+    String* name,
+    Register scratch0,
+    Register scratch1) {
+  ASSERT(name->IsSymbol());
+  Counters* counters = masm->isolate()->counters();
+  __ IncrementCounter(counters->negative_lookups(), 1, scratch0, scratch1);
+  __ IncrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1);
+
+  Label done;
+
+  const int kInterceptorOrAccessCheckNeededMask =
+      (1 << Map::kHasNamedInterceptor) | (1 << Map::kIsAccessCheckNeeded);
+
+  // Bail out if the receiver has a named interceptor or requires access checks.
+  Register map = scratch1;
+  __ lw(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
+  __ lbu(scratch0, FieldMemOperand(map, Map::kBitFieldOffset));
+  __ And(at, scratch0, Operand(kInterceptorOrAccessCheckNeededMask));
+  __ Branch(miss_label, ne, at, Operand(zero_reg));
+
+
+  // Check that receiver is a JSObject.
+  __ lbu(scratch0, FieldMemOperand(map, Map::kInstanceTypeOffset));
+  __ Branch(miss_label, lt, scratch0, Operand(FIRST_JS_OBJECT_TYPE));
+
+  // Load properties array.
+  Register properties = scratch0;
+  __ lw(properties, FieldMemOperand(receiver, JSObject::kPropertiesOffset));
+  // Check that the properties array is a dictionary.
+  __ lw(map, FieldMemOperand(properties, HeapObject::kMapOffset));
+  Register tmp = properties;
+  __ LoadRoot(tmp, Heap::kHashTableMapRootIndex);
+  __ Branch(miss_label, ne, map, Operand(tmp));
+
+  // Restore the temporarily used register.
+  __ lw(properties, FieldMemOperand(receiver, JSObject::kPropertiesOffset));
+
+  MaybeObject* result = StringDictionaryLookupStub::GenerateNegativeLookup(
+      masm,
+      miss_label,
+      &done,
+      receiver,
+      properties,
+      name,
+      scratch1);
+  if (result->IsFailure()) return result;
+
+  __ bind(&done);
+  __ DecrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1);
+
+  return result;
+}
+
+
 void StubCache::GenerateProbe(MacroAssembler* masm,
                               Code::Flags flags,
                               Register receiver,
                               Register name,
                               Register scratch,
                               Register extra,
                               Register extra2) {
-  UNIMPLEMENTED_MIPS();
+  Isolate* isolate = masm->isolate();
+  Label miss;
+
+  // Make sure that code is valid. The shifting code relies on the
+  // entry size being 8.
+  ASSERT(sizeof(Entry) == 8);
+
+  // Make sure the flags does not name a specific type.
+  ASSERT(Code::ExtractTypeFromFlags(flags) == 0);
+
+  // Make sure that there are no register conflicts.
+  ASSERT(!scratch.is(receiver));
+  ASSERT(!scratch.is(name));
+  ASSERT(!extra.is(receiver));
+  ASSERT(!extra.is(name));
+  ASSERT(!extra.is(scratch));
+  ASSERT(!extra2.is(receiver));
+  ASSERT(!extra2.is(name));
+  ASSERT(!extra2.is(scratch));
+  ASSERT(!extra2.is(extra));
+
+  // Check scratch, extra and extra2 registers are valid.
+  ASSERT(!scratch.is(no_reg));
+  ASSERT(!extra.is(no_reg));
+  ASSERT(!extra2.is(no_reg));
+
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(receiver, &miss, t0);
+
+  // Get the map of the receiver and compute the hash.
+  __ lw(scratch, FieldMemOperand(name, String::kHashFieldOffset));
+  __ lw(t8, FieldMemOperand(receiver, HeapObject::kMapOffset));
+  __ Addu(scratch, scratch, Operand(t8));
+  __ Xor(scratch, scratch, Operand(flags));
+  __ And(scratch,
+         scratch,
+         Operand((kPrimaryTableSize - 1) << kHeapObjectTagSize));
+
+  // Probe the primary table.
+  ProbeTable(isolate, masm, flags, kPrimary, name, scratch, extra, extra2);
+
+  // Primary miss: Compute hash for secondary probe.
+  __ Subu(scratch, scratch, Operand(name));
+  __ Addu(scratch, scratch, Operand(flags));
+  __ And(scratch,
+         scratch,
+         Operand((kSecondaryTableSize - 1) << kHeapObjectTagSize));
+
+  // Probe the secondary table.
+  ProbeTable(isolate, masm, flags, kSecondary, name, scratch, extra, extra2);
+
+  // Cache miss: Fall-through and let caller handle the miss by
+  // entering the runtime system.
+  __ bind(&miss);
 }
 
 
 void StubCompiler::GenerateLoadGlobalFunctionPrototype(MacroAssembler* masm,
                                                        int index,
                                                        Register prototype) {
-  UNIMPLEMENTED_MIPS();
+  // Load the global or builtins object from the current context.
+  __ lw(prototype, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX)));
+  // Load the global context from the global or builtins object.
+  __ lw(prototype,
+         FieldMemOperand(prototype, GlobalObject::kGlobalContextOffset));
+  // Load the function from the global context.
+  __ lw(prototype, MemOperand(prototype, Context::SlotOffset(index)));
+  // Load the initial map.  The global functions all have initial maps.
+  __ lw(prototype,
+         FieldMemOperand(prototype, JSFunction::kPrototypeOrInitialMapOffset));
+  // Load the prototype from the initial map.
+  __ lw(prototype, FieldMemOperand(prototype, Map::kPrototypeOffset));
 }
 
 
 void StubCompiler::GenerateDirectLoadGlobalFunctionPrototype(
     MacroAssembler* masm, int index, Register prototype, Label* miss) {
-  UNIMPLEMENTED_MIPS();
+  Isolate* isolate = masm->isolate();
+  // Check we're still in the same context.
+  __ lw(prototype, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX)));
+  ASSERT(!prototype.is(at));
+  __ li(at, isolate->global());
+  __ Branch(miss, ne, prototype, Operand(at));
+  // Get the global function with the given index.
+  JSFunction* function =
+      JSFunction::cast(isolate->global_context()->get(index));
+  // Load its initial map. The global functions all have initial maps.
+  __ li(prototype, Handle<Map>(function->initial_map()));
+  // Load the prototype from the initial map.
+  __ lw(prototype, FieldMemOperand(prototype, Map::kPrototypeOffset));
 }
 
 
 // Load a fast property out of a holder object (src). In-object properties
 // are loaded directly otherwise the property is loaded from the properties
 // fixed array.
 void StubCompiler::GenerateFastPropertyLoad(MacroAssembler* masm,
                                             Register dst, Register src,
                                             JSObject* holder, int index) {
-  UNIMPLEMENTED_MIPS();
+  // Adjust for the number of properties stored in the holder.
+  index -= holder->map()->inobject_properties();
+  if (index < 0) {
+    // Get the property straight out of the holder.
+    int offset = holder->map()->instance_size() + (index * kPointerSize);
+    __ lw(dst, FieldMemOperand(src, offset));
+  } else {
+    // Calculate the offset into the properties array.
+    int offset = index * kPointerSize + FixedArray::kHeaderSize;
+    __ lw(dst, FieldMemOperand(src, JSObject::kPropertiesOffset));
+    __ lw(dst, FieldMemOperand(dst, offset));
+  }
 }
 
 
 void StubCompiler::GenerateLoadArrayLength(MacroAssembler* masm,
                                            Register receiver,
                                            Register scratch,
                                            Label* miss_label) {
-  UNIMPLEMENTED_MIPS();
+  // Check that the receiver isn't a smi.
+  __ And(scratch, receiver, Operand(kSmiTagMask));
+  __ Branch(miss_label, eq, scratch, Operand(zero_reg));
+
+  // Check that the object is a JS array.
+  __ GetObjectType(receiver, scratch, scratch);
+  __ Branch(miss_label, ne, scratch, Operand(JS_ARRAY_TYPE));
+
+  // Load length directly from the JS array.
+  __ lw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset));
+  __ Ret();
+}
+
+
+// Generate code to check if an object is a string.  If the object is a
+// heap object, its map's instance type is left in the scratch1 register.
+// If this is not needed, scratch1 and scratch2 may be the same register.
+static void GenerateStringCheck(MacroAssembler* masm,
+                                Register receiver,
+                                Register scratch1,
+                                Register scratch2,
+                                Label* smi,
+                                Label* non_string_object) {
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(receiver, smi, t0);
+
+  // Check that the object is a string.
+  __ lw(scratch1, FieldMemOperand(receiver, HeapObject::kMapOffset));
+  __ lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset));
+  __ And(scratch2, scratch1, Operand(kIsNotStringMask));
+  // The cast is to resolve the overload for the argument of 0x0.
+  __ Branch(non_string_object,
+            ne,
+            scratch2,
+            Operand(static_cast<int32_t>(kStringTag)));
 }
 
 
 // Generate code to load the length from a string object and return the length.
 // If the receiver object is not a string or a wrapped string object the
 // execution continues at the miss label. The register containing the
 // receiver is potentially clobbered.
 void StubCompiler::GenerateLoadStringLength(MacroAssembler* masm,
                                             Register receiver,
                                             Register scratch1,
                                             Register scratch2,
                                             Label* miss,
                                             bool support_wrappers) {
-  UNIMPLEMENTED_MIPS();
+  Label check_wrapper;
+
+  // Check if the object is a string leaving the instance type in the
+  // scratch1 register.
+  GenerateStringCheck(masm, receiver, scratch1, scratch2, miss,
+                      support_wrappers ? &check_wrapper : miss);
+
+  // Load length directly from the string.
+  __ lw(v0, FieldMemOperand(receiver, String::kLengthOffset));
+  __ Ret();
+
+  if (support_wrappers) {
+    // Check if the object is a JSValue wrapper.
+    __ bind(&check_wrapper);
+    __ Branch(miss, ne, scratch1, Operand(JS_VALUE_TYPE));
+
+    // Unwrap the value and check if the wrapped value is a string.
+    __ lw(scratch1, FieldMemOperand(receiver, JSValue::kValueOffset));
+    GenerateStringCheck(masm, scratch1, scratch2, scratch2, miss, miss);
+    __ lw(v0, FieldMemOperand(scratch1, String::kLengthOffset));
+    __ Ret();
+  }
 }
 
 
 void StubCompiler::GenerateLoadFunctionPrototype(MacroAssembler* masm,
                                                  Register receiver,
                                                  Register scratch1,
                                                  Register scratch2,
                                                  Label* miss_label) {
-  UNIMPLEMENTED_MIPS();
+  __ TryGetFunctionPrototype(receiver, scratch1, scratch2, miss_label);
+  __ mov(v0, scratch1);
+  __ Ret();
 }
 
 
 // Generate StoreField code, value is passed in a0 register.
 // After executing generated code, the receiver_reg and name_reg
 // may be clobbered.
 void StubCompiler::GenerateStoreField(MacroAssembler* masm,
                                       JSObject* object,
                                       int index,
                                       Map* transition,
                                       Register receiver_reg,
                                       Register name_reg,
                                       Register scratch,
                                       Label* miss_label) {
-  UNIMPLEMENTED_MIPS();
+  // a0 : value.
+  Label exit;
+
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(receiver_reg, miss_label, scratch);
+
+  // Check that the map of the receiver hasn't changed.
+  __ lw(scratch, FieldMemOperand(receiver_reg, HeapObject::kMapOffset));
+  __ Branch(miss_label, ne, scratch, Operand(Handle<Map>(object->map())));
+
+  // Perform global security token check if needed.
+  if (object->IsJSGlobalProxy()) {
+    __ CheckAccessGlobalProxy(receiver_reg, scratch, miss_label);
+  }
+
+  // Stub never generated for non-global objects that require access
+  // checks.
+  ASSERT(object->IsJSGlobalProxy() || !object->IsAccessCheckNeeded());
+
+  // Perform map transition for the receiver if necessary.
+  if ((transition != NULL) && (object->map()->unused_property_fields() == 0)) {
+    // The properties must be extended before we can store the value.
+    // We jump to a runtime call that extends the properties array.
+    __ push(receiver_reg);
+    __ li(a2, Operand(Handle<Map>(transition)));
+    __ Push(a2, a0);
+    __ TailCallExternalReference(
+           ExternalReference(IC_Utility(IC::kSharedStoreIC_ExtendStorage),
+                             masm->isolate()),
+           3, 1);
+    return;
+  }
+
+  if (transition != NULL) {
+    // Update the map of the object; no write barrier updating is
+    // needed because the map is never in new space.
+    __ li(t0, Operand(Handle<Map>(transition)));
+    __ sw(t0, FieldMemOperand(receiver_reg, HeapObject::kMapOffset));
+  }
+
+  // Adjust for the number of properties stored in the object. Even in the
+  // face of a transition we can use the old map here because the size of the
+  // object and the number of in-object properties is not going to change.
+  index -= object->map()->inobject_properties();
+
+  if (index < 0) {
+    // Set the property straight into the object.
+    int offset = object->map()->instance_size() + (index * kPointerSize);
+    __ sw(a0, FieldMemOperand(receiver_reg, offset));
+
+    // Skip updating write barrier if storing a smi.
+    __ JumpIfSmi(a0, &exit, scratch);
+
+    // Update the write barrier for the array address.
+    // Pass the now unused name_reg as a scratch register.
+    __ RecordWrite(receiver_reg, Operand(offset), name_reg, scratch);
+  } else {
+    // Write to the properties array.
+    int offset = index * kPointerSize + FixedArray::kHeaderSize;
+    // Get the properties array.
+    __ lw(scratch, FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
+    __ sw(a0, FieldMemOperand(scratch, offset));
+
+    // Skip updating write barrier if storing a smi.
+    __ JumpIfSmi(a0, &exit);
+
+    // Update the write barrier for the array address.
+    // Ok to clobber receiver_reg and name_reg, since we return.
+    __ RecordWrite(scratch, Operand(offset), name_reg, receiver_reg);
+  }
+
+  // Return the value (register v0).
+  __ bind(&exit);
+  __ mov(v0, a0);
+  __ Ret();
 }
 
 
 void StubCompiler::GenerateLoadMiss(MacroAssembler* masm, Code::Kind kind) {
-  UNIMPLEMENTED_MIPS();
-}
-
+  ASSERT(kind == Code::LOAD_IC || kind == Code::KEYED_LOAD_IC);
+  Code* code = NULL;
+  if (kind == Code::LOAD_IC) {
+    code = masm->isolate()->builtins()->builtin(Builtins::kLoadIC_Miss);
+  } else {
+    code = masm->isolate()->builtins()->builtin(Builtins::kKeyedLoadIC_Miss);
+  }
+
+  Handle<Code> ic(code);
+  __ Jump(ic, RelocInfo::CODE_TARGET);
+}
+
+
+static void GenerateCallFunction(MacroAssembler* masm,
+                                 Object* object,
+                                 const ParameterCount& arguments,
+                                 Label* miss) {
+  // ----------- S t a t e -------------
+  //  -- a0: receiver
+  //  -- a1: function to call
+  // -----------------------------------
+  // Check that the function really is a function.
+  __ JumpIfSmi(a1, miss);
+  __ GetObjectType(a1, a3, a3);
+  __ Branch(miss, ne, a3, Operand(JS_FUNCTION_TYPE));
+
+  // Patch the receiver on the stack with the global proxy if
+  // necessary.
+  if (object->IsGlobalObject()) {
+    __ lw(a3, FieldMemOperand(a0, GlobalObject::kGlobalReceiverOffset));
+    __ sw(a3, MemOperand(sp, arguments.immediate() * kPointerSize));
+  }
+
+  // Invoke the function.
+  __ InvokeFunction(a1, arguments, JUMP_FUNCTION);
+}
+
+
+static void PushInterceptorArguments(MacroAssembler* masm,
+                                     Register receiver,
+                                     Register holder,
+                                     Register name,
+                                     JSObject* holder_obj) {
+  __ push(name);
+  InterceptorInfo* interceptor = holder_obj->GetNamedInterceptor();
+  ASSERT(!masm->isolate()->heap()->InNewSpace(interceptor));
+  Register scratch = name;
+  __ li(scratch, Operand(Handle<Object>(interceptor)));
+  __ Push(scratch, receiver, holder);
+  __ lw(scratch, FieldMemOperand(scratch, InterceptorInfo::kDataOffset));
+  __ push(scratch);
+}
+
+
+static void CompileCallLoadPropertyWithInterceptor(MacroAssembler* masm,
+                                                   Register receiver,
+                                                   Register holder,
+                                                   Register name,
+                                                   JSObject* holder_obj) {
+  PushInterceptorArguments(masm, receiver, holder, name, holder_obj);
+
+  ExternalReference ref =
+      ExternalReference(IC_Utility(IC::kLoadPropertyWithInterceptorOnly),
+          masm->isolate());
+  __ li(a0, Operand(5));
+  __ li(a1, Operand(ref));
+
+  CEntryStub stub(1);
+  __ CallStub(&stub);
+}
+
+
+static const int kFastApiCallArguments = 3;
+
+
+// Reserves space for the extra arguments to FastHandleApiCall in the
+// caller's frame.
+//
+// These arguments are set by CheckPrototypes and GenerateFastApiDirectCall.
+static void ReserveSpaceForFastApiCall(MacroAssembler* masm,
+                                       Register scratch) {
+  ASSERT(Smi::FromInt(0) == 0);
+  for (int i = 0; i < kFastApiCallArguments; i++) {
+    __ push(zero_reg);
+  }
+}
+
+
+// Undoes the effects of ReserveSpaceForFastApiCall.
+static void FreeSpaceForFastApiCall(MacroAssembler* masm) {
+  __ Drop(kFastApiCallArguments);
+}
+
+
+static MaybeObject* GenerateFastApiDirectCall(MacroAssembler* masm,
+                                      const CallOptimization& optimization,
+                                      int argc) {
+  // ----------- S t a t e -------------
+  //  -- sp[0]              : holder (set by CheckPrototypes)
+  //  -- sp[4]              : callee js function
+  //  -- sp[8]              : call data
+  //  -- sp[12]             : last js argument
+  //  -- ...
+  //  -- sp[(argc + 3) * 4] : first js argument
+  //  -- sp[(argc + 4) * 4] : receiver
+  // -----------------------------------
+  // Get the function and setup the context.
+  JSFunction* function = optimization.constant_function();
+  __ li(t1, Operand(Handle<JSFunction>(function)));
+  __ lw(cp, FieldMemOperand(t1, JSFunction::kContextOffset));
+
+  // Pass the additional arguments FastHandleApiCall expects.
+  Object* call_data = optimization.api_call_info()->data();
+  Handle<CallHandlerInfo> api_call_info_handle(optimization.api_call_info());
+  if (masm->isolate()->heap()->InNewSpace(call_data)) {
+    __ li(a0, api_call_info_handle);
+    __ lw(t2, FieldMemOperand(a0, CallHandlerInfo::kDataOffset));
+  } else {
+    __ li(t2, Operand(Handle<Object>(call_data)));
+  }
+
+  // Store js function and call data.
+  __ sw(t1, MemOperand(sp, 1 * kPointerSize));
+  __ sw(t2, MemOperand(sp, 2 * kPointerSize));
+
+  // a2 points to call data as expected by Arguments
+  // (refer to layout above).
+  __ Addu(a2, sp, Operand(2 * kPointerSize));
+
+  Object* callback = optimization.api_call_info()->callback();
+  Address api_function_address = v8::ToCData<Address>(callback);
+  ApiFunction fun(api_function_address);
+
+  const int kApiStackSpace = 4;
+
+  __ EnterExitFrame(false, kApiStackSpace);
+
+  // NOTE: the O32 abi requires a0 to hold a special pointer when returning a
+  // struct from the function (which is currently the case). This means we pass
+  // the first argument in a1 instead of a0. TryCallApiFunctionAndReturn
+  // will handle setting up a0.
+
+  // a1 = v8::Arguments&
+  // Arguments is built at sp + 1 (sp is a reserved spot for ra).
+  __ Addu(a1, sp, kPointerSize);
+
+  // v8::Arguments::implicit_args = data
+  __ sw(a2, MemOperand(a1, 0 * kPointerSize));
+  // v8::Arguments::values = last argument
+  __ Addu(t0, a2, Operand(argc * kPointerSize));
+  __ sw(t0, MemOperand(a1, 1 * kPointerSize));
+  // v8::Arguments::length_ = argc
+  __ li(t0, Operand(argc));
+  __ sw(t0, MemOperand(a1, 2 * kPointerSize));
+  // v8::Arguments::is_construct_call = 0
+  __ sw(zero_reg, MemOperand(a1, 3 * kPointerSize));
+
+  // Emitting a stub call may try to allocate (if the code is not
+  // already generated). Do not allow the assembler to perform a
+  // garbage collection but instead return the allocation failure
+  // object.
+  const int kStackUnwindSpace = argc + kFastApiCallArguments + 1;
+  ExternalReference ref =
+      ExternalReference(&fun,
+                        ExternalReference::DIRECT_API_CALL,
+                        masm->isolate());
+  return masm->TryCallApiFunctionAndReturn(ref, kStackUnwindSpace);
+}
 
 class CallInterceptorCompiler BASE_EMBEDDED {
  public:
   CallInterceptorCompiler(StubCompiler* stub_compiler,
                           const ParameterCount& arguments,
                           Register name)
       : stub_compiler_(stub_compiler),
         arguments_(arguments),
         name_(name) {}
 
-  void Compile(MacroAssembler* masm,
-               JSObject* object,
-               JSObject* holder,
-               String* name,
-               LookupResult* lookup,
-               Register receiver,
-               Register scratch1,
-               Register scratch2,
-               Register scratch3,
-               Label* miss) {
-    UNIMPLEMENTED_MIPS();
-  }
-
- private:
-  void CompileCacheable(MacroAssembler* masm,
+  MaybeObject* Compile(MacroAssembler* masm,
                        JSObject* object,
+                       JSObject* holder,
+                       String* name,
+                       LookupResult* lookup,
                        Register receiver,
                        Register scratch1,
                        Register scratch2,
                        Register scratch3,
-                       JSObject* interceptor_holder,
-                       LookupResult* lookup,
-                       String* name,
-                       const CallOptimization& optimization,
-                       Label* miss_label) {
-    UNIMPLEMENTED_MIPS();
+                       Label* miss) {
+    ASSERT(holder->HasNamedInterceptor());
+    ASSERT(!holder->GetNamedInterceptor()->getter()->IsUndefined());
+
+    // Check that the receiver isn't a smi.
+    __ JumpIfSmi(receiver, miss);
+
+    CallOptimization optimization(lookup);
+
+    if (optimization.is_constant_call()) {
+      return CompileCacheable(masm,
+                              object,
+                              receiver,
+                              scratch1,
+                              scratch2,
+                              scratch3,
+                              holder,
+                              lookup,
+                              name,
+                              optimization,
+                              miss);
+    } else {
+      CompileRegular(masm,
+                     object,
+                     receiver,
+                     scratch1,
+                     scratch2,
+                     scratch3,
+                     name,
+                     holder,
+                     miss);
+      return masm->isolate()->heap()->undefined_value();
+    }
+  }
+
+ private:
+  MaybeObject* CompileCacheable(MacroAssembler* masm,
+                                JSObject* object,
+                                Register receiver,
+                                Register scratch1,
+                                Register scratch2,
+                                Register scratch3,
+                                JSObject* interceptor_holder,
+                                LookupResult* lookup,
+                                String* name,
+                                const CallOptimization& optimization,
+                                Label* miss_label) {
+    ASSERT(optimization.is_constant_call());
+    ASSERT(!lookup->holder()->IsGlobalObject());
+
+    Counters* counters = masm->isolate()->counters();
+
+    int depth1 = kInvalidProtoDepth;
+    int depth2 = kInvalidProtoDepth;
+    bool can_do_fast_api_call = false;
+    if (optimization.is_simple_api_call() &&
+        !lookup->holder()->IsGlobalObject()) {
+      depth1 =
+          optimization.GetPrototypeDepthOfExpectedType(object,
+                                                      interceptor_holder);
+      if (depth1 == kInvalidProtoDepth) {
+        depth2 =
+            optimization.GetPrototypeDepthOfExpectedType(interceptor_holder,
+                                                        lookup->holder());
+      }
+      can_do_fast_api_call = (depth1 != kInvalidProtoDepth) ||
+                             (depth2 != kInvalidProtoDepth);
+    }
+
+    __ IncrementCounter(counters->call_const_interceptor(), 1,
+                      scratch1, scratch2);
+
+    if (can_do_fast_api_call) {
+      __ IncrementCounter(counters->call_const_interceptor_fast_api(), 1,
+                          scratch1, scratch2);
+      ReserveSpaceForFastApiCall(masm, scratch1);
+    }
+
+    // Check that the maps from receiver to interceptor's holder
+    // haven't changed and thus we can invoke interceptor.
+    Label miss_cleanup;
+    Label* miss = can_do_fast_api_call ? &miss_cleanup : miss_label;
+    Register holder =
+      stub_compiler_->CheckPrototypes(object, receiver,
+                                      interceptor_holder, scratch1,
+                                      scratch2, scratch3, name, depth1, miss);
+
+    // Invoke an interceptor and if it provides a value,
+    // branch to |regular_invoke|.
+    Label regular_invoke;
+    LoadWithInterceptor(masm, receiver, holder, interceptor_holder, scratch2,
+                        &regular_invoke);
+
+    // Interceptor returned nothing for this property.  Try to use cached
+    // constant function.
+
+    // Check that the maps from interceptor's holder to constant function's
+    // holder haven't changed and thus we can use cached constant function.
+    if (interceptor_holder != lookup->holder()) {
+      stub_compiler_->CheckPrototypes(interceptor_holder, receiver,
+                                      lookup->holder(), scratch1,
+                                      scratch2, scratch3, name, depth2, miss);
+    } else {
+      // CheckPrototypes has a side effect of fetching a 'holder'
+      // for API (object which is instanceof for the signature).  It's
+      // safe to omit it here, as if present, it should be fetched
+      // by the previous CheckPrototypes.
+      ASSERT(depth2 == kInvalidProtoDepth);
+    }
+
+    // Invoke function.
+    if (can_do_fast_api_call) {
+      MaybeObject* result = GenerateFastApiDirectCall(masm,
+                                                      optimization,
+                                                      arguments_.immediate());
+      if (result->IsFailure()) return result;
+    } else {
+      __ InvokeFunction(optimization.constant_function(), arguments_,
+                        JUMP_FUNCTION);
+    }
+
+    // Deferred code for fast API call case---clean preallocated space.
+    if (can_do_fast_api_call) {
+      __ bind(&miss_cleanup);
+      FreeSpaceForFastApiCall(masm);
+      __ Branch(miss_label);
+    }
+
+    // Invoke a regular function.
+    __ bind(&regular_invoke);
+    if (can_do_fast_api_call) {
+      FreeSpaceForFastApiCall(masm);
+    }
+
+    return masm->isolate()->heap()->undefined_value();
   }
 
   void CompileRegular(MacroAssembler* masm,
                       JSObject* object,
                       Register receiver,
                       Register scratch1,
                       Register scratch2,
                       Register scratch3,
                       String* name,
                       JSObject* interceptor_holder,
                       Label* miss_label) {
-    UNIMPLEMENTED_MIPS();
+    Register holder =
+        stub_compiler_->CheckPrototypes(object, receiver, interceptor_holder,
+                                        scratch1, scratch2, scratch3, name,
+                                        miss_label);
+
+    // Call a runtime function to load the interceptor property.
+    __ EnterInternalFrame();
+    // Save the name_ register across the call.
+    __ push(name_);
+
+    PushInterceptorArguments(masm,
+                             receiver,
+                             holder,
+                             name_,
+                             interceptor_holder);
+
+    __ CallExternalReference(
+          ExternalReference(
+              IC_Utility(IC::kLoadPropertyWithInterceptorForCall),
+              masm->isolate()),
+          5);
+
+    // Restore the name_ register.
+    __ pop(name_);
+    __ LeaveInternalFrame();
   }
 
   void LoadWithInterceptor(MacroAssembler* masm,
                            Register receiver,
                            Register holder,
                            JSObject* holder_obj,
                            Register scratch,
                            Label* interceptor_succeeded) {
-    UNIMPLEMENTED_MIPS();
+    __ EnterInternalFrame();
+
+    __ Push(holder, name_);
+
+    CompileCallLoadPropertyWithInterceptor(masm,
+                                           receiver,
+                                           holder,
+                                           name_,
+                                           holder_obj);
+
+    __ pop(name_);  // Restore the name.
+    __ pop(receiver);  // Restore the holder.
+    __ LeaveInternalFrame();
+
+    // If interceptor returns no-result sentinel, call the constant function.
+    __ LoadRoot(scratch, Heap::kNoInterceptorResultSentinelRootIndex);
+    __ Branch(interceptor_succeeded, ne, v0, Operand(scratch));
   }
 
   StubCompiler* stub_compiler_;
   const ParameterCount& arguments_;
   Register name_;
 };
 
 
+
+// Generate code to check that a global property cell is empty. Create
+// the property cell at compilation time if no cell exists for the
+// property.
+MUST_USE_RESULT static MaybeObject* GenerateCheckPropertyCell(
+    MacroAssembler* masm,
+    GlobalObject* global,
+    String* name,
+    Register scratch,
+    Label* miss) {
+  Object* probe;
+  { MaybeObject* maybe_probe = global->EnsurePropertyCell(name);
+    if (!maybe_probe->ToObject(&probe)) return maybe_probe;
+  }
+  JSGlobalPropertyCell* cell = JSGlobalPropertyCell::cast(probe);
+  ASSERT(cell->value()->IsTheHole());
+  __ li(scratch, Operand(Handle<Object>(cell)));
+  __ lw(scratch,
+        FieldMemOperand(scratch, JSGlobalPropertyCell::kValueOffset));
+  __ LoadRoot(at, Heap::kTheHoleValueRootIndex);
+  __ Branch(miss, ne, scratch, Operand(at));
+  return cell;
+}
+
+
+// Calls GenerateCheckPropertyCell for each global object in the prototype chain
+// from object to (but not including) holder.
+MUST_USE_RESULT static MaybeObject* GenerateCheckPropertyCells(
+    MacroAssembler* masm,
+    JSObject* object,
+    JSObject* holder,
+    String* name,
+    Register scratch,
+    Label* miss) {
+  JSObject* current = object;
+  while (current != holder) {
+    if (current->IsGlobalObject()) {
+      // Returns a cell or a failure.
+      MaybeObject* result = GenerateCheckPropertyCell(
+          masm,
+          GlobalObject::cast(current),
+          name,
+          scratch,
+          miss);
+      if (result->IsFailure()) return result;
+    }
+    ASSERT(current->IsJSObject());
+    current = JSObject::cast(current->GetPrototype());
+  }
+  return NULL;
+}
+
+
+// Convert and store int passed in register ival to IEEE 754 single precision
+// floating point value at memory location (dst + 4 * wordoffset)
+// If FPU is available use it for conversion.
+static void StoreIntAsFloat(MacroAssembler* masm,
+                            Register dst,
+                            Register wordoffset,
+                            Register ival,
+                            Register fval,
+                            Register scratch1,
+                            Register scratch2) {
+  if (CpuFeatures::IsSupported(FPU)) {
+    CpuFeatures::Scope scope(FPU);
+    __ mtc1(ival, f0);
+    __ cvt_s_w(f0, f0);
+    __ sll(scratch1, wordoffset, 2);
+    __ addu(scratch1, dst, scratch1);
+    __ swc1(f0, MemOperand(scratch1, 0));
+  } else {
+    // FPU is not available,  do manual conversions.
+
+    Label not_special, done;
+    // Move sign bit from source to destination.  This works because the sign
+    // bit in the exponent word of the double has the same position and polarity
+    // as the 2's complement sign bit in a Smi.
+    ASSERT(kBinary32SignMask == 0x80000000u);
+
+    __ And(fval, ival, Operand(kBinary32SignMask));
+    // Negate value if it is negative.
+    __ subu(scratch1, zero_reg, ival);
+    __ movn(ival, scratch1, fval);
+
+    // We have -1, 0 or 1, which we treat specially. Register ival contains
+    // absolute value: it is either equal to 1 (special case of -1 and 1),
+    // greater than 1 (not a special case) or less than 1 (special case of 0).
+    __ Branch(&not_special, gt, ival, Operand(1));
+
+    // For 1 or -1 we need to or in the 0 exponent (biased).
+    static const uint32_t exponent_word_for_1 =
+        kBinary32ExponentBias << kBinary32ExponentShift;
+
+    __ Xor(scratch1, ival, Operand(1));
+    __ li(scratch2, exponent_word_for_1);
+    __ or_(scratch2, fval, scratch2);
+    __ movz(fval, scratch2, scratch1);  // Only if ival is equal to 1.
+    __ Branch(&done);
+
+    __ bind(&not_special);
+    // Count leading zeros.
+    // Gets the wrong answer for 0, but we already checked for that case above.
+    Register zeros = scratch2;
+    __ clz(zeros, ival);
+
+    // Compute exponent and or it into the exponent register.
+    __ li(scratch1, (kBitsPerInt - 1) + kBinary32ExponentBias);
+    __ subu(scratch1, scratch1, zeros);
+
+    __ sll(scratch1, scratch1, kBinary32ExponentShift);
+    __ or_(fval, fval, scratch1);
+
+    // Shift up the source chopping the top bit off.
+    __ Addu(zeros, zeros, Operand(1));
+    // This wouldn't work for 1 and -1 as the shift would be 32 which means 0.
+    __ sllv(ival, ival, zeros);
+    // And the top (top 20 bits).
+    __ srl(scratch1, ival, kBitsPerInt - kBinary32MantissaBits);
+    __ or_(fval, fval, scratch1);
+
+    __ bind(&done);
+
+    __ sll(scratch1, wordoffset, 2);
+    __ addu(scratch1, dst, scratch1);
+    __ sw(fval, MemOperand(scratch1, 0));
+  }
+}
+
+
+// Convert unsigned integer with specified number of leading zeroes in binary
+// representation to IEEE 754 double.
+// Integer to convert is passed in register hiword.
+// Resulting double is returned in registers hiword:loword.
+// This functions does not work correctly for 0.
+static void GenerateUInt2Double(MacroAssembler* masm,
+                                Register hiword,
+                                Register loword,
+                                Register scratch,
+                                int leading_zeroes) {
+  const int meaningful_bits = kBitsPerInt - leading_zeroes - 1;
+  const int biased_exponent = HeapNumber::kExponentBias + meaningful_bits;
+
+  const int mantissa_shift_for_hi_word =
+      meaningful_bits - HeapNumber::kMantissaBitsInTopWord;
+
+  const int mantissa_shift_for_lo_word =
+      kBitsPerInt - mantissa_shift_for_hi_word;
+
+  __ li(scratch, biased_exponent << HeapNumber::kExponentShift);
+  if (mantissa_shift_for_hi_word > 0) {
+    __ sll(loword, hiword, mantissa_shift_for_lo_word);
+    __ srl(hiword, hiword, mantissa_shift_for_hi_word);
+    __ or_(hiword, scratch, hiword);
+  } else {
+    __ mov(loword, zero_reg);
+    __ sll(hiword, hiword, mantissa_shift_for_hi_word);
+    __ or_(hiword, scratch, hiword);
+  }
+
+  // If least significant bit of biased exponent was not 1 it was corrupted
+  // by most significant bit of mantissa so we should fix that.
+  if (!(biased_exponent & 1)) {
+    __ li(scratch, 1 << HeapNumber::kExponentShift);
+    __ nor(scratch, scratch, scratch);
+    __ and_(hiword, hiword, scratch);
+  }
+}
+
+
 #undef __
 #define __ ACCESS_MASM(masm())
 
 
 Register StubCompiler::CheckPrototypes(JSObject* object,
                                        Register object_reg,
                                        JSObject* holder,
                                        Register holder_reg,
                                        Register scratch1,
                                        Register scratch2,
                                        String* name,
                                        int save_at_depth,
                                        Label* miss) {
-  UNIMPLEMENTED_MIPS();
-  return no_reg;
+  // Make sure there's no overlap between holder and object registers.
+  ASSERT(!scratch1.is(object_reg) && !scratch1.is(holder_reg));
+  ASSERT(!scratch2.is(object_reg) && !scratch2.is(holder_reg)
+         && !scratch2.is(scratch1));
+
+  // Keep track of the current object in register reg.
+  Register reg = object_reg;
+  int depth = 0;
+
+  if (save_at_depth == depth) {
+    __ sw(reg, MemOperand(sp));
+  }
+
+  // Check the maps in the prototype chain.
+  // Traverse the prototype chain from the object and do map checks.
+  JSObject* current = object;
+  while (current != holder) {
+    depth++;
+
+    // Only global objects and objects that do not require access
+    // checks are allowed in stubs.
+    ASSERT(current->IsJSGlobalProxy() || !current->IsAccessCheckNeeded());
+
+    ASSERT(current->GetPrototype()->IsJSObject());
+    JSObject* prototype = JSObject::cast(current->GetPrototype());
+    if (!current->HasFastProperties() &&
+        !current->IsJSGlobalObject() &&
+        !current->IsJSGlobalProxy()) {
+      if (!name->IsSymbol()) {
+        MaybeObject* maybe_lookup_result = heap()->LookupSymbol(name);
+        Object* lookup_result = NULL;  // Initialization to please compiler.
+        if (!maybe_lookup_result->ToObject(&lookup_result)) {
+          set_failure(Failure::cast(maybe_lookup_result));
+          return reg;
+        }
+        name = String::cast(lookup_result);
+      }
+      ASSERT(current->property_dictionary()->FindEntry(name) ==
+             StringDictionary::kNotFound);
+
+      MaybeObject* negative_lookup = GenerateDictionaryNegativeLookup(masm(),
+                                                                      miss,
+                                                                      reg,
+                                                                      name,
+                                                                      scratch1,
+                                                                      scratch2);
+      if (negative_lookup->IsFailure()) {
+        set_failure(Failure::cast(negative_lookup));
+        return reg;
+      }
+
+      __ lw(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset));
+      reg = holder_reg;  // From now the object is in holder_reg.
+      __ lw(reg, FieldMemOperand(scratch1, Map::kPrototypeOffset));
+    } else if (heap()->InNewSpace(prototype)) {
+      // Get the map of the current object.
+      __ lw(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset));
+
+      // Branch on the result of the map check.
+      __ Branch(miss, ne, scratch1, Operand(Handle<Map>(current->map())));
+
+      // Check access rights to the global object.  This has to happen
+      // after the map check so that we know that the object is
+      // actually a global object.
+      if (current->IsJSGlobalProxy()) {
+        __ CheckAccessGlobalProxy(reg, scratch1, miss);
+        // Restore scratch register to be the map of the object.  In the
+        // new space case below, we load the prototype from the map in
+        // the scratch register.
+        __ lw(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset));
+      }
+
+      reg = holder_reg;  // From now the object is in holder_reg.
+      // The prototype is in new space; we cannot store a reference
+      // to it in the code. Load it from the map.
+      __ lw(reg, FieldMemOperand(scratch1, Map::kPrototypeOffset));
+    } else {
+      // Check the map of the current object.
+      __ lw(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset));
+      // Branch on the result of the map check.
+      __ Branch(miss, ne, scratch1, Operand(Handle<Map>(current->map())));
+      // Check access rights to the global object.  This has to happen
+      // after the map check so that we know that the object is
+      // actually a global object.
+      if (current->IsJSGlobalProxy()) {
+        __ CheckAccessGlobalProxy(reg, scratch1, miss);
+      }
+      // The prototype is in old space; load it directly.
+      reg = holder_reg;  // From now the object is in holder_reg.
+      __ li(reg, Operand(Handle<JSObject>(prototype)));
+    }
+
+    if (save_at_depth == depth) {
+      __ sw(reg, MemOperand(sp));
+    }
+
+    // Go to the next object in the prototype chain.
+    current = prototype;
+  }
+
+  // Check the holder map.
+  __ lw(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset));
+  __ Branch(miss, ne, scratch1, Operand(Handle<Map>(current->map())));
+
+  // Log the check depth.
+  LOG(masm()->isolate(), IntEvent("check-maps-depth", depth + 1));
+  // Perform security check for access to the global object.
+  ASSERT(holder->IsJSGlobalProxy() || !holder->IsAccessCheckNeeded());
+  if (holder->IsJSGlobalProxy()) {
+    __ CheckAccessGlobalProxy(reg, scratch1, miss);
+  };
+
+  // If we've skipped any global objects, it's not enough to verify
+  // that their maps haven't changed.  We also need to check that the
+  // property cell for the property is still empty.
+
+  MaybeObject* result = GenerateCheckPropertyCells(masm(),
+                                                   object,
+                                                   holder,
+                                                   name,
+                                                   scratch1,
+                                                   miss);
+  if (result->IsFailure()) set_failure(Failure::cast(result));
+
+  // Return the register containing the holder.
+  return reg;
 }
 
 
 void StubCompiler::GenerateLoadField(JSObject* object,
                                      JSObject* holder,
                                      Register receiver,
                                      Register scratch1,
                                      Register scratch2,
                                      Register scratch3,
                                      int index,
                                      String* name,
                                      Label* miss) {
-  UNIMPLEMENTED_MIPS();
+  // Check that the receiver isn't a smi.
+  __ And(scratch1, receiver, Operand(kSmiTagMask));
+  __ Branch(miss, eq, scratch1, Operand(zero_reg));
+
+  // Check that the maps haven't changed.
+  Register reg =
+      CheckPrototypes(object, receiver, holder, scratch1, scratch2, scratch3,
+                      name, miss);
+  GenerateFastPropertyLoad(masm(), v0, reg, holder, index);
+  __ Ret();
 }
 
 
 void StubCompiler::GenerateLoadConstant(JSObject* object,
                                         JSObject* holder,
                                         Register receiver,
                                         Register scratch1,
                                         Register scratch2,
                                         Register scratch3,
                                         Object* value,
                                         String* name,
                                         Label* miss) {
-  UNIMPLEMENTED_MIPS();
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(receiver, miss, scratch1);
+
+  // Check that the maps haven't changed.
+  Register reg =
+      CheckPrototypes(object, receiver, holder,
+                      scratch1, scratch2, scratch3, name, miss);
+
+  // Return the constant value.
+  __ li(v0, Operand(Handle<Object>(value)));
+  __ Ret();
 }
 
 
 MaybeObject* StubCompiler::GenerateLoadCallback(JSObject* object,
                                                 JSObject* holder,
                                                 Register receiver,
                                                 Register name_reg,
                                                 Register scratch1,
                                                 Register scratch2,
                                                 Register scratch3,
                                                 AccessorInfo* callback,
                                                 String* name,
                                                 Label* miss) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(receiver, miss, scratch1);
+
+  // Check that the maps haven't changed.
+  Register reg =
+    CheckPrototypes(object, receiver, holder, scratch1, scratch2, scratch3,
+                    name, miss);
+
+  // Build AccessorInfo::args_ list on the stack and push property name below
+  // the exit frame to make GC aware of them and store pointers to them.
+  __ push(receiver);
+  __ mov(scratch2, sp);  // scratch2 = AccessorInfo::args_
+  Handle<AccessorInfo> callback_handle(callback);
+  if (heap()->InNewSpace(callback_handle->data())) {
+    __ li(scratch3, callback_handle);
+    __ lw(scratch3, FieldMemOperand(scratch3, AccessorInfo::kDataOffset));
+  } else {
+    __ li(scratch3, Handle<Object>(callback_handle->data()));
+  }
+  __ Push(reg, scratch3, name_reg);
+  __ mov(a2, scratch2);  // Saved in case scratch2 == a1.
+  __ mov(a1, sp);  // a1 (first argument - see note below) = Handle<String>
+
+  Address getter_address = v8::ToCData<Address>(callback->getter());
+  ApiFunction fun(getter_address);
+
+  // NOTE: the O32 abi requires a0 to hold a special pointer when returning a
+  // struct from the function (which is currently the case). This means we pass
+  // the arguments in a1-a2 instead of a0-a1. TryCallApiFunctionAndReturn
+  // will handle setting up a0.
+
+  const int kApiStackSpace = 1;
+
+  __ EnterExitFrame(false, kApiStackSpace);
+  // Create AccessorInfo instance on the stack above the exit frame with
+  // scratch2 (internal::Object **args_) as the data.
+  __ sw(a2, MemOperand(sp, kPointerSize));
+  // a2 (second argument - see note above) = AccessorInfo&
+  __ Addu(a2, sp, kPointerSize);
+
+  // Emitting a stub call may try to allocate (if the code is not
+  // already generated).  Do not allow the assembler to perform a
+  // garbage collection but instead return the allocation failure
+  // object.
+  ExternalReference ref =
+      ExternalReference(&fun,
+                        ExternalReference::DIRECT_GETTER_CALL,
+                        masm()->isolate());
+  // 4 args - will be freed later by LeaveExitFrame.
+  return masm()->TryCallApiFunctionAndReturn(ref, 4);
 }
 
 
 void StubCompiler::GenerateLoadInterceptor(JSObject* object,
                                            JSObject* interceptor_holder,
                                            LookupResult* lookup,
                                            Register receiver,
                                            Register name_reg,
                                            Register scratch1,
                                            Register scratch2,
                                            Register scratch3,
                                            String* name,
                                            Label* miss) {
-  UNIMPLEMENTED_MIPS();
+  ASSERT(interceptor_holder->HasNamedInterceptor());
+  ASSERT(!interceptor_holder->GetNamedInterceptor()->getter()->IsUndefined());
+
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(receiver, miss);
+
+  // So far the most popular follow ups for interceptor loads are FIELD
+  // and CALLBACKS, so inline only them, other cases may be added
+  // later.
+  bool compile_followup_inline = false;
+  if (lookup->IsProperty() && lookup->IsCacheable()) {
+    if (lookup->type() == FIELD) {
+      compile_followup_inline = true;
+    } else if (lookup->type() == CALLBACKS &&
+        lookup->GetCallbackObject()->IsAccessorInfo() &&
+        AccessorInfo::cast(lookup->GetCallbackObject())->getter() != NULL) {
+      compile_followup_inline = true;
+    }
+  }
+
+  if (compile_followup_inline) {
+    // Compile the interceptor call, followed by inline code to load the
+    // property from further up the prototype chain if the call fails.
+    // Check that the maps haven't changed.
+    Register holder_reg = CheckPrototypes(object, receiver, interceptor_holder,
+                                          scratch1, scratch2, scratch3,
+                                          name, miss);
+    ASSERT(holder_reg.is(receiver) || holder_reg.is(scratch1));
+
+    // Save necessary data before invoking an interceptor.
+    // Requires a frame to make GC aware of pushed pointers.
+    __ EnterInternalFrame();
+
+    if (lookup->type() == CALLBACKS && !receiver.is(holder_reg)) {
+      // CALLBACKS case needs a receiver to be passed into C++ callback.
+      __ Push(receiver, holder_reg, name_reg);
+    } else {
+      __ Push(holder_reg, name_reg);
+    }
+
+    // Invoke an interceptor.  Note: map checks from receiver to
+    // interceptor's holder has been compiled before (see a caller
+    // of this method).
+    CompileCallLoadPropertyWithInterceptor(masm(),
+                                           receiver,
+                                           holder_reg,
+                                           name_reg,
+                                           interceptor_holder);
+
+    // Check if interceptor provided a value for property.  If it's
+    // the case, return immediately.
+    Label interceptor_failed;
+    __ LoadRoot(scratch1, Heap::kNoInterceptorResultSentinelRootIndex);
+    __ Branch(&interceptor_failed, eq, v0, Operand(scratch1));
+    __ LeaveInternalFrame();
+    __ Ret();
+
+    __ bind(&interceptor_failed);
+    __ pop(name_reg);
+    __ pop(holder_reg);
+    if (lookup->type() == CALLBACKS && !receiver.is(holder_reg)) {
+      __ pop(receiver);
+    }
+
+    __ LeaveInternalFrame();
+
+    // Check that the maps from interceptor's holder to lookup's holder
+    // haven't changed.  And load lookup's holder into |holder| register.
+    if (interceptor_holder != lookup->holder()) {
+      holder_reg = CheckPrototypes(interceptor_holder,
+                                   holder_reg,
+                                   lookup->holder(),
+                                   scratch1,
+                                   scratch2,
+                                   scratch3,
+                                   name,
+                                   miss);
+    }
+
+    if (lookup->type() == FIELD) {
+      // We found FIELD property in prototype chain of interceptor's holder.
+      // Retrieve a field from field's holder.
+      GenerateFastPropertyLoad(masm(), v0, holder_reg,
+                               lookup->holder(), lookup->GetFieldIndex());
+      __ Ret();
+    } else {
+      // We found CALLBACKS property in prototype chain of interceptor's
+      // holder.
+      ASSERT(lookup->type() == CALLBACKS);
+      ASSERT(lookup->GetCallbackObject()->IsAccessorInfo());
+      AccessorInfo* callback = AccessorInfo::cast(lookup->GetCallbackObject());
+      ASSERT(callback != NULL);
+      ASSERT(callback->getter() != NULL);
+
+      // Tail call to runtime.
+      // Important invariant in CALLBACKS case: the code above must be
+      // structured to never clobber |receiver| register.
+      __ li(scratch2, Handle<AccessorInfo>(callback));
+      // holder_reg is either receiver or scratch1.
+      if (!receiver.is(holder_reg)) {
+        ASSERT(scratch1.is(holder_reg));
+        __ Push(receiver, holder_reg);
+        __ lw(scratch3,
+              FieldMemOperand(scratch2, AccessorInfo::kDataOffset));
+        __ Push(scratch3, scratch2, name_reg);
+      } else {
+        __ push(receiver);
+        __ lw(scratch3,
+              FieldMemOperand(scratch2, AccessorInfo::kDataOffset));
+        __ Push(holder_reg, scratch3, scratch2, name_reg);
+      }
+
+      ExternalReference ref =
+          ExternalReference(IC_Utility(IC::kLoadCallbackProperty),
+                            masm()->isolate());
+      __ TailCallExternalReference(ref, 5, 1);
+    }
+  } else {  // !compile_followup_inline
+    // Call the runtime system to load the interceptor.
+    // Check that the maps haven't changed.
+    Register holder_reg = CheckPrototypes(object, receiver, interceptor_holder,
+                                          scratch1, scratch2, scratch3,
+                                          name, miss);
+    PushInterceptorArguments(masm(), receiver, holder_reg,
+                             name_reg, interceptor_holder);
+
+    ExternalReference ref = ExternalReference(
+        IC_Utility(IC::kLoadPropertyWithInterceptorForLoad), masm()->isolate());
+    __ TailCallExternalReference(ref, 5, 1);
+  }
 }
 
 
 void CallStubCompiler::GenerateNameCheck(String* name, Label* miss) {
-  UNIMPLEMENTED_MIPS();
+  if (kind_ == Code::KEYED_CALL_IC) {
+    __ Branch(miss, ne, a2, Operand(Handle<String>(name)));
+  }
 }
 
 
 void CallStubCompiler::GenerateGlobalReceiverCheck(JSObject* object,
                                                    JSObject* holder,
                                                    String* name,
                                                    Label* miss) {
-  UNIMPLEMENTED_MIPS();
+  ASSERT(holder->IsGlobalObject());
+
+  // Get the number of arguments.
+  const int argc = arguments().immediate();
+
+  // Get the receiver from the stack.
+  __ lw(a0, MemOperand(sp, argc * kPointerSize));
+
+  // If the object is the holder then we know that it's a global
+  // object which can only happen for contextual calls. In this case,
+  // the receiver cannot be a smi.
+  if (object != holder) {
+    __ JumpIfSmi(a0, miss);
+  }
+
+  // Check that the maps haven't changed.
+  CheckPrototypes(object, a0, holder, a3, a1, t0, name, miss);
 }
 
 
 void CallStubCompiler::GenerateLoadFunctionFromCell(JSGlobalPropertyCell* cell,
                                                     JSFunction* function,
                                                     Label* miss) {
-  UNIMPLEMENTED_MIPS();
+  // Get the value from the cell.
+  __ li(a3, Operand(Handle<JSGlobalPropertyCell>(cell)));
+  __ lw(a1, FieldMemOperand(a3, JSGlobalPropertyCell::kValueOffset));
+
+  // Check that the cell contains the same function.
+  if (heap()->InNewSpace(function)) {
+    // We can't embed a pointer to a function in new space so we have
+    // to verify that the shared function info is unchanged. This has
+    // the nice side effect that multiple closures based on the same
+    // function can all use this call IC. Before we load through the
+    // function, we have to verify that it still is a function.
+    __ JumpIfSmi(a1, miss);
+    __ GetObjectType(a1, a3, a3);
+    __ Branch(miss, ne, a3, Operand(JS_FUNCTION_TYPE));
+
+    // Check the shared function info. Make sure it hasn't changed.
+    __ li(a3, Handle<SharedFunctionInfo>(function->shared()));
+    __ lw(t0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+    __ Branch(miss, ne, t0, Operand(a3));
+  } else {
+    __ Branch(miss, ne, a1, Operand(Handle<JSFunction>(function)));
+  }
 }
 
 
 MaybeObject* CallStubCompiler::GenerateMissBranch() {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  MaybeObject* maybe_obj = masm()->isolate()->stub_cache()->ComputeCallMiss(
+          arguments().immediate(), kind_);
+  Object* obj;
+  if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+  __ Jump(Handle<Code>(Code::cast(obj)), RelocInfo::CODE_TARGET);
+  return obj;
 }
 
 
 MaybeObject* CallStubCompiler::CompileCallField(JSObject* object,
                                                 JSObject* holder,
                                                 int index,
                                                 String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+  Label miss;
+
+  GenerateNameCheck(name, &miss);
+
+  const int argc = arguments().immediate();
+
+  // Get the receiver of the function from the stack into a0.
+  __ lw(a0, MemOperand(sp, argc * kPointerSize));
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(a0, &miss, t0);
+
+  // Do the right check and compute the holder register.
+  Register reg = CheckPrototypes(object, a0, holder, a1, a3, t0, name, &miss);
+  GenerateFastPropertyLoad(masm(), a1, reg, holder, index);
+
+  GenerateCallFunction(masm(), object, arguments(), &miss);
+
+  // Handle call cache miss.
+  __ bind(&miss);
+  MaybeObject* maybe_result = GenerateMissBranch();
+  if (maybe_result->IsFailure()) return maybe_result;
+
+  // Return the generated code.
+  return GetCode(FIELD, name);
 }
 
 
 MaybeObject* CallStubCompiler::CompileArrayPushCall(Object* object,
                                                     JSObject* holder,
                                                     JSGlobalPropertyCell* cell,
                                                     JSFunction* function,
                                                     String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a2    : name
+  //  -- ra    : return address
+  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero-based)
+  //  -- ...
+  //  -- sp[argc * 4]           : receiver
+  // -----------------------------------
+
+  // If object is not an array, bail out to regular call.
+  if (!object->IsJSArray() || cell != NULL) return heap()->undefined_value();
+
+  Label miss;
+
+  GenerateNameCheck(name, &miss);
+
+  Register receiver = a1;
+
+  // Get the receiver from the stack.
+  const int argc = arguments().immediate();
+  __ lw(receiver, MemOperand(sp, argc * kPointerSize));
+
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(receiver, &miss);
+
+  // Check that the maps haven't changed.
+  CheckPrototypes(JSObject::cast(object), receiver,
+                  holder, a3, v0, t0, name, &miss);
+
+  if (argc == 0) {
+    // Nothing to do, just return the length.
+    __ lw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset));
+    __ Drop(argc + 1);
+    __ Ret();
+  } else {
+    Label call_builtin;
+
+    Register elements = a3;
+    Register end_elements = t1;
+
+    // Get the elements array of the object.
+    __ lw(elements, FieldMemOperand(receiver, JSArray::kElementsOffset));
+
+    // Check that the elements are in fast mode and writable.
+    __ CheckMap(elements, v0,
+                Heap::kFixedArrayMapRootIndex, &call_builtin, true);
+
+    if (argc == 1) {  // Otherwise fall through to call the builtin.
+      Label exit, with_write_barrier, attempt_to_grow_elements;
+
+      // Get the array's length into v0 and calculate new length.
+      __ lw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset));
+      STATIC_ASSERT(kSmiTagSize == 1);
+      STATIC_ASSERT(kSmiTag == 0);
+      __ Addu(v0, v0, Operand(Smi::FromInt(argc)));
+
+      // Get the element's length.
+      __ lw(t0, FieldMemOperand(elements, FixedArray::kLengthOffset));
+
+      // Check if we could survive without allocation.
+      __ Branch(&attempt_to_grow_elements, gt, v0, Operand(t0));
+
+      // Save new length.
+      __ sw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset));
+
+      // Push the element.
+      __ lw(t0, MemOperand(sp, (argc - 1) * kPointerSize));
+      // We may need a register containing the address end_elements below,
+      // so write back the value in end_elements.
+      __ sll(end_elements, v0, kPointerSizeLog2 - kSmiTagSize);
+      __ Addu(end_elements, elements, end_elements);
+      const int kEndElementsOffset =
+          FixedArray::kHeaderSize - kHeapObjectTag - argc * kPointerSize;
+      __ sw(t0, MemOperand(end_elements, kEndElementsOffset));
+      __ Addu(end_elements, end_elements, kPointerSize);
+
+      // Check for a smi.
+      __ JumpIfNotSmi(t0, &with_write_barrier);
+      __ bind(&exit);
+      __ Drop(argc + 1);
+      __ Ret();
+
+      __ bind(&with_write_barrier);
+      __ InNewSpace(elements, t0, eq, &exit);
+      __ RecordWriteHelper(elements, end_elements, t0);
+      __ Drop(argc + 1);
+      __ Ret();
+
+      __ bind(&attempt_to_grow_elements);
+      // v0: array's length + 1.
+      // t0: elements' length.
+
+      if (!FLAG_inline_new) {
+        __ Branch(&call_builtin);
+      }
+
+      ExternalReference new_space_allocation_top =
+          ExternalReference::new_space_allocation_top_address(
+              masm()->isolate());
+      ExternalReference new_space_allocation_limit =
+          ExternalReference::new_space_allocation_limit_address(
+              masm()->isolate());
+
+      const int kAllocationDelta = 4;
+      // Load top and check if it is the end of elements.
+      __ sll(end_elements, v0, kPointerSizeLog2 - kSmiTagSize);
+      __ Addu(end_elements, elements, end_elements);
+      __ Addu(end_elements, end_elements, Operand(kEndElementsOffset));
+      __ li(t3, Operand(new_space_allocation_top));
+      __ lw(t2, MemOperand(t3));
+      __ Branch(&call_builtin, ne, end_elements, Operand(t2));
+
+      __ li(t5, Operand(new_space_allocation_limit));
+      __ lw(t5, MemOperand(t5));
+      __ Addu(t2, t2, Operand(kAllocationDelta * kPointerSize));
+      __ Branch(&call_builtin, hi, t2, Operand(t5));
+
+      // We fit and could grow elements.
+      // Update new_space_allocation_top.
+      __ sw(t2, MemOperand(t3));
+      // Push the argument.
+      __ lw(t2, MemOperand(sp, (argc - 1) * kPointerSize));
+      __ sw(t2, MemOperand(end_elements));
+      // Fill the rest with holes.
+      __ LoadRoot(t2, Heap::kTheHoleValueRootIndex);
+      for (int i = 1; i < kAllocationDelta; i++) {
+        __ sw(t2, MemOperand(end_elements, i * kPointerSize));
+      }
+
+      // Update elements' and array's sizes.
+      __ sw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset));
+      __ Addu(t0, t0, Operand(Smi::FromInt(kAllocationDelta)));
+      __ sw(t0, FieldMemOperand(elements, FixedArray::kLengthOffset));
+
+      // Elements are in new space, so write barrier is not required.
+      __ Drop(argc + 1);
+      __ Ret();
+    }
+    __ bind(&call_builtin);
+    __ TailCallExternalReference(ExternalReference(Builtins::c_ArrayPush,
+                                                   masm()->isolate()),
+                                 argc + 1,
+                                 1);
+  }
+
+  // Handle call cache miss.
+  __ bind(&miss);
+  MaybeObject* maybe_result = GenerateMissBranch();
+  if (maybe_result->IsFailure()) return maybe_result;
+
+  // Return the generated code.
+  return GetCode(function);
 }
 
 
 MaybeObject* CallStubCompiler::CompileArrayPopCall(Object* object,
                                                    JSObject* holder,
                                                    JSGlobalPropertyCell* cell,
                                                    JSFunction* function,
                                                    String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a2    : name
+  //  -- ra    : return address
+  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero-based)
+  //  -- ...
+  //  -- sp[argc * 4]           : receiver
+  // -----------------------------------
+
+  // If object is not an array, bail out to regular call.
+  if (!object->IsJSArray() || cell != NULL) return heap()->undefined_value();
+
+  Label miss, return_undefined, call_builtin;
+
+  Register receiver = a1;
+  Register elements = a3;
+
+  GenerateNameCheck(name, &miss);
+
+  // Get the receiver from the stack.
+  const int argc = arguments().immediate();
+  __ lw(receiver, MemOperand(sp, argc * kPointerSize));
+
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(receiver, &miss);
+
+  // Check that the maps haven't changed.
+  CheckPrototypes(JSObject::cast(object),
+                  receiver, holder, elements, t0, v0, name, &miss);
+
+  // Get the elements array of the object.
+  __ lw(elements, FieldMemOperand(receiver, JSArray::kElementsOffset));
+
+  // Check that the elements are in fast mode and writable.
+  __ CheckMap(elements, v0, Heap::kFixedArrayMapRootIndex, &call_builtin, true);
+
+  // Get the array's length into t0 and calculate new length.
+  __ lw(t0, FieldMemOperand(receiver, JSArray::kLengthOffset));
+  __ Subu(t0, t0, Operand(Smi::FromInt(1)));
+  __ Branch(&return_undefined, lt, t0, Operand(zero_reg));
+
+  // Get the last element.
+  __ LoadRoot(t2, Heap::kTheHoleValueRootIndex);
+  STATIC_ASSERT(kSmiTagSize == 1);
+  STATIC_ASSERT(kSmiTag == 0);
+  // We can't address the last element in one operation. Compute the more
+  // expensive shift first, and use an offset later on.
+  __ sll(t1, t0, kPointerSizeLog2 - kSmiTagSize);
+  __ Addu(elements, elements, t1);
+  __ lw(v0, MemOperand(elements, FixedArray::kHeaderSize - kHeapObjectTag));
+  __ Branch(&call_builtin, eq, v0, Operand(t2));
+
+  // Set the array's length.
+  __ sw(t0, FieldMemOperand(receiver, JSArray::kLengthOffset));
+
+  // Fill with the hole.
+  __ sw(t2, MemOperand(elements, FixedArray::kHeaderSize - kHeapObjectTag));
+  __ Drop(argc + 1);
+  __ Ret();
+
+  __ bind(&return_undefined);
+  __ LoadRoot(v0, Heap::kUndefinedValueRootIndex);
+  __ Drop(argc + 1);
+  __ Ret();
+
+  __ bind(&call_builtin);
+  __ TailCallExternalReference(ExternalReference(Builtins::c_ArrayPop,
+                                                 masm()->isolate()),
+                               argc + 1,
+                               1);
+
+  // Handle call cache miss.
+  __ bind(&miss);
+  MaybeObject* maybe_result = GenerateMissBranch();
+  if (maybe_result->IsFailure()) return maybe_result;
+
+  // Return the generated code.
+  return GetCode(function);
 }
 
 
 MaybeObject* CallStubCompiler::CompileStringCharCodeAtCall(
     Object* object,
     JSObject* holder,
     JSGlobalPropertyCell* cell,
     JSFunction* function,
     String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a2                     : function name
+  //  -- ra                     : return address
+  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero-based)
+  //  -- ...
+  //  -- sp[argc * 4]           : receiver
+  // -----------------------------------
+
+  // If object is not a string, bail out to regular call.
+  if (!object->IsString() || cell != NULL) return heap()->undefined_value();
+
+  const int argc = arguments().immediate();
+
+  Label miss;
+  Label name_miss;
+  Label index_out_of_range;
+
+  Label* index_out_of_range_label = &index_out_of_range;
+
+  if (kind_ == Code::CALL_IC && extra_ic_state_ == DEFAULT_STRING_STUB) {
+    index_out_of_range_label = &miss;
+  }
+
+  GenerateNameCheck(name, &name_miss);
+
+  // Check that the maps starting from the prototype haven't changed.
+  GenerateDirectLoadGlobalFunctionPrototype(masm(),
+                                            Context::STRING_FUNCTION_INDEX,
+                                            v0,
+                                            &miss);
+  ASSERT(object != holder);
+  CheckPrototypes(JSObject::cast(object->GetPrototype()), v0, holder,
+                  a1, a3, t0, name, &miss);
+
+  Register receiver = a1;
+  Register index = t1;
+  Register scratch = a3;
+  Register result = v0;
+  __ lw(receiver, MemOperand(sp, argc * kPointerSize));
+  if (argc > 0) {
+    __ lw(index, MemOperand(sp, (argc - 1) * kPointerSize));
+  } else {
+    __ LoadRoot(index, Heap::kUndefinedValueRootIndex);
+  }
+
+  StringCharCodeAtGenerator char_code_at_generator(receiver,
+                                                   index,
+                                                   scratch,
+                                                   result,
+                                                   &miss,  // When not a string.
+                                                   &miss,  // When not a number.
+                                                   index_out_of_range_label,
+                                                   STRING_INDEX_IS_NUMBER);
+  char_code_at_generator.GenerateFast(masm());
+  __ Drop(argc + 1);
+  __ Ret();
+
+  StubRuntimeCallHelper call_helper;
+  char_code_at_generator.GenerateSlow(masm(), call_helper);
+
+  if (index_out_of_range.is_linked()) {
+    __ bind(&index_out_of_range);
+    __ LoadRoot(v0, Heap::kNanValueRootIndex);
+    __ Drop(argc + 1);
+    __ Ret();
+  }
+
+  __ bind(&miss);
+  // Restore function name in a2.
+  __ li(a2, Handle<String>(name));
+  __ bind(&name_miss);
+  MaybeObject* maybe_result = GenerateMissBranch();
+  if (maybe_result->IsFailure()) return maybe_result;
+
+  // Return the generated code.
+  return GetCode(function);
 }
 
 
 MaybeObject* CallStubCompiler::CompileStringCharAtCall(
     Object* object,
     JSObject* holder,
     JSGlobalPropertyCell* cell,
     JSFunction* function,
     String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a2                     : function name
+  //  -- ra                     : return address
+  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero-based)
+  //  -- ...
+  //  -- sp[argc * 4]           : receiver
+  // -----------------------------------
+
+  // If object is not a string, bail out to regular call.
+  if (!object->IsString() || cell != NULL) return heap()->undefined_value();
+
+  const int argc = arguments().immediate();
+
+  Label miss;
+  Label name_miss;
+  Label index_out_of_range;
+  Label* index_out_of_range_label = &index_out_of_range;
+
+  if (kind_ == Code::CALL_IC && extra_ic_state_ == DEFAULT_STRING_STUB) {
+    index_out_of_range_label = &miss;
+  }
+
+  GenerateNameCheck(name, &name_miss);
+
+  // Check that the maps starting from the prototype haven't changed.
+  GenerateDirectLoadGlobalFunctionPrototype(masm(),
+                                            Context::STRING_FUNCTION_INDEX,
+                                            v0,
+                                            &miss);
+  ASSERT(object != holder);
+  CheckPrototypes(JSObject::cast(object->GetPrototype()), v0, holder,
+                  a1, a3, t0, name, &miss);
+
+  Register receiver = v0;
+  Register index = t1;
+  Register scratch1 = a1;
+  Register scratch2 = a3;
+  Register result = v0;
+  __ lw(receiver, MemOperand(sp, argc * kPointerSize));
+  if (argc > 0) {
+    __ lw(index, MemOperand(sp, (argc - 1) * kPointerSize));
+  } else {
+    __ LoadRoot(index, Heap::kUndefinedValueRootIndex);
+  }
+
+  StringCharAtGenerator char_at_generator(receiver,
+                                          index,
+                                          scratch1,
+                                          scratch2,
+                                          result,
+                                          &miss,  // When not a string.
+                                          &miss,  // When not a number.
+                                          index_out_of_range_label,
+                                          STRING_INDEX_IS_NUMBER);
+  char_at_generator.GenerateFast(masm());
+  __ Drop(argc + 1);
+  __ Ret();
+
+  StubRuntimeCallHelper call_helper;
+  char_at_generator.GenerateSlow(masm(), call_helper);
+
+  if (index_out_of_range.is_linked()) {
+    __ bind(&index_out_of_range);
+    __ LoadRoot(v0, Heap::kEmptyStringRootIndex);
+    __ Drop(argc + 1);
+    __ Ret();
+  }
+
+  __ bind(&miss);
+  // Restore function name in a2.
+  __ li(a2, Handle<String>(name));
+  __ bind(&name_miss);
+  MaybeObject* maybe_result = GenerateMissBranch();
+  if (maybe_result->IsFailure()) return maybe_result;
+
+  // Return the generated code.
+  return GetCode(function);
 }
 
 
 MaybeObject* CallStubCompiler::CompileStringFromCharCodeCall(
     Object* object,
     JSObject* holder,
     JSGlobalPropertyCell* cell,
     JSFunction* function,
     String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a2                     : function name
+  //  -- ra                     : return address
+  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero-based)
+  //  -- ...
+  //  -- sp[argc * 4]           : receiver
+  // -----------------------------------
+
+  const int argc = arguments().immediate();
+
+  // If the object is not a JSObject or we got an unexpected number of
+  // arguments, bail out to the regular call.
+  if (!object->IsJSObject() || argc != 1) return heap()->undefined_value();
+
+  Label miss;
+  GenerateNameCheck(name, &miss);
+
+  if (cell == NULL) {
+    __ lw(a1, MemOperand(sp, 1 * kPointerSize));
+
+    STATIC_ASSERT(kSmiTag == 0);
+    __ JumpIfSmi(a1, &miss);
+
+    CheckPrototypes(JSObject::cast(object), a1, holder, v0, a3, t0, name,
+                    &miss);
+  } else {
+    ASSERT(cell->value() == function);
+    GenerateGlobalReceiverCheck(JSObject::cast(object), holder, name, &miss);
+    GenerateLoadFunctionFromCell(cell, function, &miss);
+  }
+
+  // Load the char code argument.
+  Register code = a1;
+  __ lw(code, MemOperand(sp, 0 * kPointerSize));
+
+  // Check the code is a smi.
+  Label slow;
+  STATIC_ASSERT(kSmiTag == 0);
+  __ JumpIfNotSmi(code, &slow);
+
+  // Convert the smi code to uint16.
+  __ And(code, code, Operand(Smi::FromInt(0xffff)));
+
+  StringCharFromCodeGenerator char_from_code_generator(code, v0);
+  char_from_code_generator.GenerateFast(masm());
+  __ Drop(argc + 1);
+  __ Ret();
+
+  StubRuntimeCallHelper call_helper;
+  char_from_code_generator.GenerateSlow(masm(), call_helper);
+
+  // Tail call the full function. We do not have to patch the receiver
+  // because the function makes no use of it.
+  __ bind(&slow);
+  __ InvokeFunction(function, arguments(), JUMP_FUNCTION);
+
+  __ bind(&miss);
+  // a2: function name.
+  MaybeObject* maybe_result = GenerateMissBranch();
+  if (maybe_result->IsFailure()) return maybe_result;
+
+  // Return the generated code.
+  return (cell == NULL) ? GetCode(function) : GetCode(NORMAL, name);
 }
 
 
 MaybeObject* CallStubCompiler::CompileMathFloorCall(Object* object,
                                                     JSObject* holder,
                                                     JSGlobalPropertyCell* cell,
                                                     JSFunction* function,
                                                     String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a2                     : function name
+  //  -- ra                     : return address
+  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero-based)
+  //  -- ...
+  //  -- sp[argc * 4]           : receiver
+  // -----------------------------------
+
+  if (!CpuFeatures::IsSupported(FPU))
+    return heap()->undefined_value();
+  CpuFeatures::Scope scope_fpu(FPU);
+
+  const int argc = arguments().immediate();
+
+  // If the object is not a JSObject or we got an unexpected number of
+  // arguments, bail out to the regular call.
+  if (!object->IsJSObject() || argc != 1) return heap()->undefined_value();
+
+  Label miss, slow;
+  GenerateNameCheck(name, &miss);
+
+  if (cell == NULL) {
+    __ lw(a1, MemOperand(sp, 1 * kPointerSize));
+
+    STATIC_ASSERT(kSmiTag == 0);
+    __ JumpIfSmi(a1, &miss);
+
+    CheckPrototypes(JSObject::cast(object), a1, holder, a0, a3, t0, name,
+                    &miss);
+  } else {
+    ASSERT(cell->value() == function);
+    GenerateGlobalReceiverCheck(JSObject::cast(object), holder, name, &miss);
+    GenerateLoadFunctionFromCell(cell, function, &miss);
+  }
+
+  // Load the (only) argument into v0.
+  __ lw(v0, MemOperand(sp, 0 * kPointerSize));
+
+  // If the argument is a smi, just return.
+  STATIC_ASSERT(kSmiTag == 0);
+  __ And(t0, v0, Operand(kSmiTagMask));
+  __ Drop(argc + 1, eq, t0, Operand(zero_reg));
+  __ Ret(eq, t0, Operand(zero_reg));
+
+  __ CheckMap(v0, a1, Heap::kHeapNumberMapRootIndex, &slow, true);
+
+  Label wont_fit_smi, no_fpu_error, restore_fcsr_and_return;
+
+  // If fpu is enabled, we use the floor instruction.
+
+  // Load the HeapNumber value.
+  __ ldc1(f0, FieldMemOperand(v0, HeapNumber::kValueOffset));
+
+  // Backup FCSR.
+  __ cfc1(a3, FCSR);
+  // Clearing FCSR clears the exception mask with no side-effects.
+  __ ctc1(zero_reg, FCSR);
+  // Convert the argument to an integer.
+  __ floor_w_d(f0, f0);
+
+  // Start checking for special cases.
+  // Get the argument exponent and clear the sign bit.
+  __ lw(t1, FieldMemOperand(v0, HeapNumber::kValueOffset + kPointerSize));
+  __ And(t2, t1, Operand(~HeapNumber::kSignMask));
+  __ srl(t2, t2, HeapNumber::kMantissaBitsInTopWord);
+
+  // Retrieve FCSR and check for fpu errors.
+  __ cfc1(t5, FCSR);
+  __ srl(t5, t5, kFCSRFlagShift);
+  // Flag 1 marks an inaccurate but still good result so we ignore it.
+  __ And(t5, t5, Operand(kFCSRFlagMask ^ 1));
+  __ Branch(&no_fpu_error, eq, t5, Operand(zero_reg));
+
+  // Check for NaN, Infinity, and -Infinity.
+  // They are invariant through a Math.Floor call, so just
+  // return the original argument.
+  __ Subu(t3, t2, Operand(HeapNumber::kExponentMask
+        >> HeapNumber::kMantissaBitsInTopWord));
+  __ Branch(&restore_fcsr_and_return, eq, t3, Operand(zero_reg));
+  // We had an overflow or underflow in the conversion. Check if we
+  // have a big exponent.
+  // If greater or equal, the argument is already round and in v0.
+  __ Branch(&restore_fcsr_and_return, ge, t3,
+      Operand(HeapNumber::kMantissaBits));
+  __ Branch(&wont_fit_smi);
+
+  __ bind(&no_fpu_error);
+  // Move the result back to v0.
+  __ mfc1(v0, f0);
+  // Check if the result fits into a smi.
+  __ Addu(a1, v0, Operand(0x40000000));
+  __ Branch(&wont_fit_smi, lt, a1, Operand(zero_reg));
+  // Tag the result.
+  STATIC_ASSERT(kSmiTag == 0);
+  __ sll(v0, v0, kSmiTagSize);
+
+  // Check for -0.
+  __ Branch(&restore_fcsr_and_return, ne, v0, Operand(zero_reg));
+  // t1 already holds the HeapNumber exponent.
+  __ And(t0, t1, Operand(HeapNumber::kSignMask));
+  // If our HeapNumber is negative it was -0, so load its address and return.
+  // Else v0 is loaded with 0, so we can also just return.
+  __ Branch(&restore_fcsr_and_return, eq, t0, Operand(zero_reg));
+  __ lw(v0, MemOperand(sp, 0 * kPointerSize));
+
+  __ bind(&restore_fcsr_and_return);
+  // Restore FCSR and return.
+  __ ctc1(a3, FCSR);
+
+  __ Drop(argc + 1);
+  __ Ret();
+
+  __ bind(&wont_fit_smi);
+  // Restore FCSR and fall to slow case.
+  __ ctc1(a3, FCSR);
+
+  __ bind(&slow);
+  // Tail call the full function. We do not have to patch the receiver
+  // because the function makes no use of it.
+  __ InvokeFunction(function, arguments(), JUMP_FUNCTION);
+
+  __ bind(&miss);
+  // a2: function name.
+  MaybeObject* obj = GenerateMissBranch();
+  if (obj->IsFailure()) return obj;
+
+  // Return the generated code.
+  return (cell == NULL) ? GetCode(function) : GetCode(NORMAL, name);
 }
 
 
 MaybeObject* CallStubCompiler::CompileMathAbsCall(Object* object,
                                                   JSObject* holder,
                                                   JSGlobalPropertyCell* cell,
                                                   JSFunction* function,
                                                   String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a2                     : function name
+  //  -- ra                     : return address
+  //  -- sp[(argc - n - 1) * 4] : arg[n] (zero-based)
+  //  -- ...
+  //  -- sp[argc * 4]           : receiver
+  // -----------------------------------
+
+  const int argc = arguments().immediate();
+
+  // If the object is not a JSObject or we got an unexpected number of
+  // arguments, bail out to the regular call.
+  if (!object->IsJSObject() || argc != 1) return heap()->undefined_value();
+
+  Label miss;
+  GenerateNameCheck(name, &miss);
+
+  if (cell == NULL) {
+    __ lw(a1, MemOperand(sp, 1 * kPointerSize));
+
+    STATIC_ASSERT(kSmiTag == 0);
+    __ JumpIfSmi(a1, &miss);
+
+    CheckPrototypes(JSObject::cast(object), a1, holder, v0, a3, t0, name,
+                    &miss);
+  } else {
+    ASSERT(cell->value() == function);
+    GenerateGlobalReceiverCheck(JSObject::cast(object), holder, name, &miss);
+    GenerateLoadFunctionFromCell(cell, function, &miss);
+  }
+
+  // Load the (only) argument into v0.
+  __ lw(v0, MemOperand(sp, 0 * kPointerSize));
+
+  // Check if the argument is a smi.
+  Label not_smi;
+  STATIC_ASSERT(kSmiTag == 0);
+  __ JumpIfNotSmi(v0, &not_smi);
+
+  // Do bitwise not or do nothing depending on the sign of the
+  // argument.
+  __ sra(t0, v0, kBitsPerInt - 1);
+  __ Xor(a1, v0, t0);
+
+  // Add 1 or do nothing depending on the sign of the argument.
+  __ Subu(v0, a1, t0);
+
+  // If the result is still negative, go to the slow case.
+  // This only happens for the most negative smi.
+  Label slow;
+  __ Branch(&slow, lt, v0, Operand(zero_reg));
+
+  // Smi case done.
+  __ Drop(argc + 1);
+  __ Ret();
+
+  // Check if the argument is a heap number and load its exponent and
+  // sign.
+  __ bind(&not_smi);
+  __ CheckMap(v0, a1, Heap::kHeapNumberMapRootIndex, &slow, true);
+  __ lw(a1, FieldMemOperand(v0, HeapNumber::kExponentOffset));
+
+  // Check the sign of the argument. If the argument is positive,
+  // just return it.
+  Label negative_sign;
+  __ And(t0, a1, Operand(HeapNumber::kSignMask));
+  __ Branch(&negative_sign, ne, t0, Operand(zero_reg));
+  __ Drop(argc + 1);
+  __ Ret();
+
+  // If the argument is negative, clear the sign, and return a new
+  // number.
+  __ bind(&negative_sign);
+  __ Xor(a1, a1, Operand(HeapNumber::kSignMask));
+  __ lw(a3, FieldMemOperand(v0, HeapNumber::kMantissaOffset));
+  __ LoadRoot(t2, Heap::kHeapNumberMapRootIndex);
+  __ AllocateHeapNumber(v0, t0, t1, t2, &slow);
+  __ sw(a1, FieldMemOperand(v0, HeapNumber::kExponentOffset));
+  __ sw(a3, FieldMemOperand(v0, HeapNumber::kMantissaOffset));
+  __ Drop(argc + 1);
+  __ Ret();
+
+  // Tail call the full function. We do not have to patch the receiver
+  // because the function makes no use of it.
+  __ bind(&slow);
+  __ InvokeFunction(function, arguments(), JUMP_FUNCTION);
+
+  __ bind(&miss);
+  // a2: function name.
+  MaybeObject* maybe_result = GenerateMissBranch();
+  if (maybe_result->IsFailure()) return maybe_result;
+
+  // Return the generated code.
+  return (cell == NULL) ? GetCode(function) : GetCode(NORMAL, name);
 }
 
 
 MaybeObject* CallStubCompiler::CompileFastApiCall(
     const CallOptimization& optimization,
     Object* object,
     JSObject* holder,
     JSGlobalPropertyCell* cell,
     JSFunction* function,
     String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+
+  Isolate* isolate = masm()->isolate();
+  Heap* heap = isolate->heap();
+  Counters* counters = isolate->counters();
+
+  ASSERT(optimization.is_simple_api_call());
+  // Bail out if object is a global object as we don't want to
+  // repatch it to global receiver.
+  if (object->IsGlobalObject()) return heap->undefined_value();
+  if (cell != NULL) return heap->undefined_value();
+  if (!object->IsJSObject()) return heap()->undefined_value();
+  int depth = optimization.GetPrototypeDepthOfExpectedType(
+            JSObject::cast(object), holder);
+  if (depth == kInvalidProtoDepth) return heap->undefined_value();
+
+  Label miss, miss_before_stack_reserved;
+
+  GenerateNameCheck(name, &miss_before_stack_reserved);
+
+  // Get the receiver from the stack.
+  const int argc = arguments().immediate();
+  __ lw(a1, MemOperand(sp, argc * kPointerSize));
+
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(a1, &miss_before_stack_reserved);
+
+  __ IncrementCounter(counters->call_const(), 1, a0, a3);
+  __ IncrementCounter(counters->call_const_fast_api(), 1, a0, a3);
+
+  ReserveSpaceForFastApiCall(masm(), a0);
+
+  // Check that the maps haven't changed and find a Holder as a side effect.
+  CheckPrototypes(JSObject::cast(object), a1, holder, a0, a3, t0, name,
+                  depth, &miss);
+
+  MaybeObject* result = GenerateFastApiDirectCall(masm(), optimization, argc);
+  if (result->IsFailure()) return result;
+
+  __ bind(&miss);
+  FreeSpaceForFastApiCall(masm());
+
+  __ bind(&miss_before_stack_reserved);
+  MaybeObject* maybe_result = GenerateMissBranch();
+  if (maybe_result->IsFailure()) return maybe_result;
+
+  // Return the generated code.
+  return GetCode(function);
 }
 
 
 MaybeObject* CallStubCompiler::CompileCallConstant(Object* object,
                                                    JSObject* holder,
                                                    JSFunction* function,
                                                    String* name,
                                                    CheckType check) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+  if (HasCustomCallGenerator(function)) {
+    MaybeObject* maybe_result = CompileCustomCall(
+        object, holder, NULL, function, name);
+    Object* result;
+    if (!maybe_result->ToObject(&result)) return maybe_result;
+    // Undefined means bail out to regular compiler.
+    if (!result->IsUndefined()) return result;
+  }
+
+  Label miss;
+
+  GenerateNameCheck(name, &miss);
+
+  // Get the receiver from the stack.
+  const int argc = arguments().immediate();
+  __ lw(a1, MemOperand(sp, argc * kPointerSize));
+
+  // Check that the receiver isn't a smi.
+  if (check != NUMBER_CHECK) {
+    __ And(t1, a1, Operand(kSmiTagMask));
+    __ Branch(&miss, eq, t1, Operand(zero_reg));
+  }
+
+  // Make sure that it's okay not to patch the on stack receiver
+  // unless we're doing a receiver map check.
+  ASSERT(!object->IsGlobalObject() || check == RECEIVER_MAP_CHECK);
+
+  SharedFunctionInfo* function_info = function->shared();
+  switch (check) {
+    case RECEIVER_MAP_CHECK:
+      __ IncrementCounter(masm()->isolate()->counters()->call_const(),
+          1, a0, a3);
+
+      // Check that the maps haven't changed.
+      CheckPrototypes(JSObject::cast(object), a1, holder, a0, a3, t0, name,
+                      &miss);
+
+      // Patch the receiver on the stack with the global proxy if
+      // necessary.
+      if (object->IsGlobalObject()) {
+        __ lw(a3, FieldMemOperand(a1, GlobalObject::kGlobalReceiverOffset));
+        __ sw(a3, MemOperand(sp, argc * kPointerSize));
+      }
+      break;
+
+    case STRING_CHECK:
+      if (!function->IsBuiltin() && !function_info->strict_mode()) {
+        // Calling non-strict non-builtins with a value as the receiver
+        // requires boxing.
+        __ jmp(&miss);
+      } else {
+        // Check that the object is a two-byte string or a symbol.
+        __ GetObjectType(a1, a3, a3);
+        __ Branch(&miss, Ugreater_equal, a3, Operand(FIRST_NONSTRING_TYPE));
+        // Check that the maps starting from the prototype haven't changed.
+        GenerateDirectLoadGlobalFunctionPrototype(
+            masm(), Context::STRING_FUNCTION_INDEX, a0, &miss);
+        CheckPrototypes(JSObject::cast(object->GetPrototype()), a0, holder, a3,
+                        a1, t0, name, &miss);
+      }
+      break;
+
+    case NUMBER_CHECK: {
+      if (!function->IsBuiltin() && !function_info->strict_mode()) {
+        // Calling non-strict non-builtins with a value as the receiver
+        // requires boxing.
+        __ jmp(&miss);
+      } else {
+      Label fast;
+        // Check that the object is a smi or a heap number.
+        __ And(t1, a1, Operand(kSmiTagMask));
+        __ Branch(&fast, eq, t1, Operand(zero_reg));
+        __ GetObjectType(a1, a0, a0);
+        __ Branch(&miss, ne, a0, Operand(HEAP_NUMBER_TYPE));
+        __ bind(&fast);
+        // Check that the maps starting from the prototype haven't changed.
+        GenerateDirectLoadGlobalFunctionPrototype(
+            masm(), Context::NUMBER_FUNCTION_INDEX, a0, &miss);
+        CheckPrototypes(JSObject::cast(object->GetPrototype()), a0, holder, a3,
+                        a1, t0, name, &miss);
+      }
+      break;
+    }
+
+    case BOOLEAN_CHECK: {
+      if (!function->IsBuiltin() && !function_info->strict_mode()) {
+        // Calling non-strict non-builtins with a value as the receiver
+        // requires boxing.
+        __ jmp(&miss);
+      } else {
+        Label fast;
+        // Check that the object is a boolean.
+        __ LoadRoot(t0, Heap::kTrueValueRootIndex);
+        __ Branch(&fast, eq, a1, Operand(t0));
+        __ LoadRoot(t0, Heap::kFalseValueRootIndex);
+        __ Branch(&miss, ne, a1, Operand(t0));
+        __ bind(&fast);
+        // Check that the maps starting from the prototype haven't changed.
+        GenerateDirectLoadGlobalFunctionPrototype(
+            masm(), Context::BOOLEAN_FUNCTION_INDEX, a0, &miss);
+        CheckPrototypes(JSObject::cast(object->GetPrototype()), a0, holder, a3,
+                        a1, t0, name, &miss);
+      }
+      break;
+    }
+
+    default:
+      UNREACHABLE();
+  }
+
+  __ InvokeFunction(function, arguments(), JUMP_FUNCTION);
+
+  // Handle call cache miss.
+  __ bind(&miss);
+
+  MaybeObject* maybe_result = GenerateMissBranch();
+  if (maybe_result->IsFailure()) return maybe_result;
+
+  // Return the generated code.
+  return GetCode(function);
 }
 
 
 MaybeObject* CallStubCompiler::CompileCallInterceptor(JSObject* object,
                                                       JSObject* holder,
                                                       String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+
+  Label miss;
+
+  GenerateNameCheck(name, &miss);
+
+  // Get the number of arguments.
+  const int argc = arguments().immediate();
+
+  LookupResult lookup;
+  LookupPostInterceptor(holder, name, &lookup);
+
+  // Get the receiver from the stack.
+  __ lw(a1, MemOperand(sp, argc * kPointerSize));
+
+  CallInterceptorCompiler compiler(this, arguments(), a2);
+  MaybeObject* result = compiler.Compile(masm(),
+                                         object,
+                                         holder,
+                                         name,
+                                         &lookup,
+                                         a1,
+                                         a3,
+                                         t0,
+                                         a0,
+                                         &miss);
+  if (result->IsFailure()) {
+    return result;
+  }
+
+  // Move returned value, the function to call, to a1.
+  __ mov(a1, v0);
+  // Restore receiver.
+  __ lw(a0, MemOperand(sp, argc * kPointerSize));
+
+  GenerateCallFunction(masm(), object, arguments(), &miss);
+
+  // Handle call cache miss.
+  __ bind(&miss);
+  MaybeObject* maybe_result = GenerateMissBranch();
+  if (maybe_result->IsFailure()) return maybe_result;
+
+  // Return the generated code.
+  return GetCode(INTERCEPTOR, name);
 }
 
 
 MaybeObject* CallStubCompiler::CompileCallGlobal(JSObject* object,
                                                  GlobalObject* holder,
                                                  JSGlobalPropertyCell* cell,
                                                  JSFunction* function,
                                                  String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+
+  if (HasCustomCallGenerator(function)) {
+    MaybeObject* maybe_result = CompileCustomCall(
+        object, holder, cell, function, name);
+    Object* result;
+    if (!maybe_result->ToObject(&result)) return maybe_result;
+    // Undefined means bail out to regular compiler.
+    if (!result->IsUndefined()) return result;
+  }
+
+  Label miss;
+
+  GenerateNameCheck(name, &miss);
+
+  // Get the number of arguments.
+  const int argc = arguments().immediate();
+
+  GenerateGlobalReceiverCheck(object, holder, name, &miss);
+  GenerateLoadFunctionFromCell(cell, function, &miss);
+
+  // Patch the receiver on the stack with the global proxy if
+  // necessary.
+  if (object->IsGlobalObject()) {
+    __ lw(a3, FieldMemOperand(a0, GlobalObject::kGlobalReceiverOffset));
+    __ sw(a3, MemOperand(sp, argc * kPointerSize));
+  }
+
+  // Setup the context (function already in r1).
+  __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
+
+  // Jump to the cached code (tail call).
+  Counters* counters = masm()->isolate()->counters();
+  __ IncrementCounter(counters->call_global_inline(), 1, a3, t0);
+  ASSERT(function->is_compiled());
+  Handle<Code> code(function->code());
+  ParameterCount expected(function->shared()->formal_parameter_count());
+  if (V8::UseCrankshaft()) {
+    UNIMPLEMENTED_MIPS();
+  } else {
+    __ InvokeCode(code, expected, arguments(),
+                  RelocInfo::CODE_TARGET, JUMP_FUNCTION);
+  }
+
+  // Handle call cache miss.
+  __ bind(&miss);
+  __ IncrementCounter(counters->call_global_inline_miss(), 1, a1, a3);
+  MaybeObject* maybe_result = GenerateMissBranch();
+  if (maybe_result->IsFailure()) return maybe_result;
+
+  // Return the generated code.
+  return GetCode(NORMAL, name);
 }
 
 
 MaybeObject* StoreStubCompiler::CompileStoreField(JSObject* object,
                                                   int index,
                                                   Map* transition,
                                                   String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a0    : value
+  //  -- a1    : receiver
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+  Label miss;
+
+  // Name register might be clobbered.
+  GenerateStoreField(masm(),
+                     object,
+                     index,
+                     transition,
+                     a1, a2, a3,
+                     &miss);
+  __ bind(&miss);
+  __ li(a2, Operand(Handle<String>(name)));  // Restore name.
+  Handle<Code> ic = masm()->isolate()->builtins()->Builtins::StoreIC_Miss();
+  __ Jump(ic, RelocInfo::CODE_TARGET);
+
+  // Return the generated code.
+  return GetCode(transition == NULL ? FIELD : MAP_TRANSITION, name);
 }
 
 
 MaybeObject* StoreStubCompiler::CompileStoreCallback(JSObject* object,
                                                      AccessorInfo* callback,
                                                      String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a0    : value
+  //  -- a1    : receiver
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+  Label miss;
+
+  // Check that the object isn't a smi.
+  __ JumpIfSmi(a1, &miss);
+
+  // Check that the map of the object hasn't changed.
+  __ lw(a3, FieldMemOperand(a1, HeapObject::kMapOffset));
+  __ Branch(&miss, ne, a3, Operand(Handle<Map>(object->map())));
+
+  // Perform global security token check if needed.
+  if (object->IsJSGlobalProxy()) {
+    __ CheckAccessGlobalProxy(a1, a3, &miss);
+  }
+
+  // Stub never generated for non-global objects that require access
+  // checks.
+  ASSERT(object->IsJSGlobalProxy() || !object->IsAccessCheckNeeded());
+
+  __ push(a1);  // Receiver.
+  __ li(a3, Operand(Handle<AccessorInfo>(callback)));  // Callback info.
+  __ Push(a3, a2, a0);
+
+  // Do tail-call to the runtime system.
+  ExternalReference store_callback_property =
+      ExternalReference(IC_Utility(IC::kStoreCallbackProperty),
+          masm()->isolate());
+  __ TailCallExternalReference(store_callback_property, 4, 1);
+
+  // Handle store cache miss.
+  __ bind(&miss);
+  Handle<Code> ic = masm()->isolate()->builtins()->StoreIC_Miss();
+  __ Jump(ic, RelocInfo::CODE_TARGET);
+
+  // Return the generated code.
+  return GetCode(CALLBACKS, name);
 }
 
 
 MaybeObject* StoreStubCompiler::CompileStoreInterceptor(JSObject* receiver,
                                                         String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a0    : value
+  //  -- a1    : receiver
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+  Label miss;
+
+  // Check that the object isn't a smi.
+  __ JumpIfSmi(a1, &miss);
+
+  // Check that the map of the object hasn't changed.
+  __ lw(a3, FieldMemOperand(a1, HeapObject::kMapOffset));
+  __ Branch(&miss, ne, a3, Operand(Handle<Map>(receiver->map())));
+
+  // Perform global security token check if needed.
+  if (receiver->IsJSGlobalProxy()) {
+    __ CheckAccessGlobalProxy(a1, a3, &miss);
+  }
+
+  // Stub is never generated for non-global objects that require access
+  // checks.
+  ASSERT(receiver->IsJSGlobalProxy() || !receiver->IsAccessCheckNeeded());
+
+  __ Push(a1, a2, a0);  // Receiver, name, value.
+
+  __ li(a0, Operand(Smi::FromInt(strict_mode_)));
+  __ push(a0);  // Strict mode.
+
+  // Do tail-call to the runtime system.
+  ExternalReference store_ic_property =
+      ExternalReference(IC_Utility(IC::kStoreInterceptorProperty),
+          masm()->isolate());
+  __ TailCallExternalReference(store_ic_property, 4, 1);
+
+  // Handle store cache miss.
+  __ bind(&miss);
+  Handle<Code> ic = masm()->isolate()->builtins()->Builtins::StoreIC_Miss();
+  __ Jump(ic, RelocInfo::CODE_TARGET);
+
+  // Return the generated code.
+  return GetCode(INTERCEPTOR, name);
 }
 
 
 MaybeObject* StoreStubCompiler::CompileStoreGlobal(GlobalObject* object,
                                                    JSGlobalPropertyCell* cell,
                                                    String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a0    : value
+  //  -- a1    : receiver
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+  Label miss;
+
+  // Check that the map of the global has not changed.
+  __ lw(a3, FieldMemOperand(a1, HeapObject::kMapOffset));
+  __ Branch(&miss, ne, a3, Operand(Handle<Map>(object->map())));
+
+  // Check that the value in the cell is not the hole. If it is, this
+  // cell could have been deleted and reintroducing the global needs
+  // to update the property details in the property dictionary of the
+  // global object. We bail out to the runtime system to do that.
+  __ li(t0, Operand(Handle<JSGlobalPropertyCell>(cell)));
+  __ LoadRoot(t1, Heap::kTheHoleValueRootIndex);
+  __ lw(t2, FieldMemOperand(t0, JSGlobalPropertyCell::kValueOffset));
+  __ Branch(&miss, eq, t1, Operand(t2));
+
+  // Store the value in the cell.
+  __ sw(a0, FieldMemOperand(t0, JSGlobalPropertyCell::kValueOffset));
+  __ mov(v0, a0);  // Stored value must be returned in v0.
+  Counters* counters = masm()->isolate()->counters();
+  __ IncrementCounter(counters->named_store_global_inline(), 1, a1, a3);
+  __ Ret();
+
+  // Handle store cache miss.
+  __ bind(&miss);
+  __ IncrementCounter(counters->named_store_global_inline_miss(), 1, a1, a3);
+  Handle<Code> ic = masm()->isolate()->builtins()->StoreIC_Miss();
+  __ Jump(ic, RelocInfo::CODE_TARGET);
+
+  // Return the generated code.
+  return GetCode(NORMAL, name);
 }
 
 
 MaybeObject* LoadStubCompiler::CompileLoadNonexistent(String* name,
                                                       JSObject* object,
                                                       JSObject* last) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
-}
-
-
+  // ----------- S t a t e -------------
+  //  -- a0    : receiver
+  //  -- ra    : return address
+  // -----------------------------------
+  Label miss;
+
+  // Check that the receiver is not a smi.
+  __ JumpIfSmi(a0, &miss);
+
+  // Check the maps of the full prototype chain.
+  CheckPrototypes(object, a0, last, a3, a1, t0, name, &miss);
+
+  // If the last object in the prototype chain is a global object,
+  // check that the global property cell is empty.
+  if (last->IsGlobalObject()) {
+    MaybeObject* cell = GenerateCheckPropertyCell(masm(),
+                                                  GlobalObject::cast(last),
+                                                  name,
+                                                  a1,
+                                                  &miss);
+    if (cell->IsFailure()) {
+      miss.Unuse();
+      return cell;
+    }
+  }
+
+  // Return undefined if maps of the full prototype chain is still the same.
+  __ LoadRoot(v0, Heap::kUndefinedValueRootIndex);
+  __ Ret();
+
+  __ bind(&miss);
+  GenerateLoadMiss(masm(), Code::LOAD_IC);
+
+  // Return the generated code.
+  return GetCode(NONEXISTENT, heap()->empty_string());
+}
+
+
 MaybeObject* LoadStubCompiler::CompileLoadField(JSObject* object,
                                                 JSObject* holder,
                                                 int index,
                                                 String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a0    : receiver
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+  Label miss;
+
+  __ mov(v0, a0);
+
+  GenerateLoadField(object, holder, v0, a3, a1, t0, index, name, &miss);
+  __ bind(&miss);
+  GenerateLoadMiss(masm(), Code::LOAD_IC);
+
+  // Return the generated code.
+  return GetCode(FIELD, name);
 }
 
 
 MaybeObject* LoadStubCompiler::CompileLoadCallback(String* name,
                                                    JSObject* object,
                                                    JSObject* holder,
                                                    AccessorInfo* callback) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a0    : receiver
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+  Label miss;
+
+  MaybeObject* result = GenerateLoadCallback(object, holder, a0, a2, a3, a1, t0,
+                                             callback, name, &miss);
+  if (result->IsFailure()) {
+    miss.Unuse();
+    return result;
+  }
+
+  __ bind(&miss);
+  GenerateLoadMiss(masm(), Code::LOAD_IC);
+
+  // Return the generated code.
+  return GetCode(CALLBACKS, name);
 }
 
 
 MaybeObject* LoadStubCompiler::CompileLoadConstant(JSObject* object,
                                                    JSObject* holder,
                                                    Object* value,
                                                    String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a0    : receiver
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+  Label miss;
+
+  GenerateLoadConstant(object, holder, a0, a3, a1, t0, value, name, &miss);
+  __ bind(&miss);
+  GenerateLoadMiss(masm(), Code::LOAD_IC);
+
+  // Return the generated code.
+  return GetCode(CONSTANT_FUNCTION, name);
 }
 
 
 MaybeObject* LoadStubCompiler::CompileLoadInterceptor(JSObject* object,
                                                       JSObject* holder,
                                                       String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a0    : receiver
+  //  -- a2    : name
+  //  -- ra    : return address
+  //  -- [sp]  : receiver
+  // -----------------------------------
+  Label miss;
+
+  LookupResult lookup;
+  LookupPostInterceptor(holder, name, &lookup);
+  GenerateLoadInterceptor(object,
+                          holder,
+                          &lookup,
+                          a0,
+                          a2,
+                          a3,
+                          a1,
+                          t0,
+                          name,
+                          &miss);
+  __ bind(&miss);
+  GenerateLoadMiss(masm(), Code::LOAD_IC);
+
+  // Return the generated code.
+  return GetCode(INTERCEPTOR, name);
 }
 
 
 MaybeObject* LoadStubCompiler::CompileLoadGlobal(JSObject* object,
                                                  GlobalObject* holder,
                                                  JSGlobalPropertyCell* cell,
                                                  String* name,
                                                  bool is_dont_delete) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a0    : receiver
+  //  -- a2    : name
+  //  -- ra    : return address
+  // -----------------------------------
+  Label miss;
+
+  // If the object is the holder then we know that it's a global
+  // object which can only happen for contextual calls. In this case,
+  // the receiver cannot be a smi.
+  if (object != holder) {
+    __ And(t0, a0, Operand(kSmiTagMask));
+    __ Branch(&miss, eq, t0, Operand(zero_reg));
+  }
+
+  // Check that the map of the global has not changed.
+  CheckPrototypes(object, a0, holder, a3, t0, a1, name, &miss);
+
+  // Get the value from the cell.
+  __ li(a3, Operand(Handle<JSGlobalPropertyCell>(cell)));
+  __ lw(t0, FieldMemOperand(a3, JSGlobalPropertyCell::kValueOffset));
+
+  // Check for deleted property if property can actually be deleted.
+  if (!is_dont_delete) {
+    __ LoadRoot(at, Heap::kTheHoleValueRootIndex);
+    __ Branch(&miss, eq, t0, Operand(at));
+  }
+
+  __ mov(v0, t0);
+  Counters* counters = masm()->isolate()->counters();
+  __ IncrementCounter(counters->named_load_global_stub(), 1, a1, a3);
+  __ Ret();
+
+  __ bind(&miss);
+  __ IncrementCounter(counters->named_load_global_stub_miss(), 1, a1, a3);
+  GenerateLoadMiss(masm(), Code::LOAD_IC);
+
+  // Return the generated code.
+  return GetCode(NORMAL, name);
 }
 
 
 MaybeObject* KeyedLoadStubCompiler::CompileLoadField(String* name,
                                                      JSObject* receiver,
                                                      JSObject* holder,
                                                      int index) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- ra    : return address
+  //  -- a0    : key
+  //  -- a1    : receiver
+  // -----------------------------------
+  Label miss;
+
+  // Check the key is the cached one.
+  __ Branch(&miss, ne, a0, Operand(Handle<String>(name)));
+
+  GenerateLoadField(receiver, holder, a1, a2, a3, t0, index, name, &miss);
+  __ bind(&miss);
+  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);
+
+  return GetCode(FIELD, name);
 }
 
 
 MaybeObject* KeyedLoadStubCompiler::CompileLoadCallback(
     String* name,
     JSObject* receiver,
     JSObject* holder,
     AccessorInfo* callback) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- ra    : return address
+  //  -- a0    : key
+  //  -- a1    : receiver
+  // -----------------------------------
+  Label miss;
+
+  // Check the key is the cached one.
+  __ Branch(&miss, ne, a0, Operand(Handle<String>(name)));
+
+  MaybeObject* result = GenerateLoadCallback(receiver, holder, a1, a0, a2, a3,
+                                             t0, callback, name, &miss);
+  if (result->IsFailure()) {
+    miss.Unuse();
+    return result;
+  }
+
+  __ bind(&miss);
+  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);
+
+  return GetCode(CALLBACKS, name);
 }
 
 
 MaybeObject* KeyedLoadStubCompiler::CompileLoadConstant(String* name,
                                                         JSObject* receiver,
                                                         JSObject* holder,
                                                         Object* value) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- ra    : return address
+  //  -- a0    : key
+  //  -- a1    : receiver
+  // -----------------------------------
+  Label miss;
+
+  // Check the key is the cached one.
+  __ Branch(&miss, ne, a0, Operand(Handle<String>(name)));
+
+  GenerateLoadConstant(receiver, holder, a1, a2, a3, t0, value, name, &miss);
+  __ bind(&miss);
+  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);
+
+  // Return the generated code.
+  return GetCode(CONSTANT_FUNCTION, name);
 }
 
 
 MaybeObject* KeyedLoadStubCompiler::CompileLoadInterceptor(JSObject* receiver,
                                                            JSObject* holder,
                                                            String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- ra    : return address
+  //  -- a0    : key
+  //  -- a1    : receiver
+  // -----------------------------------
+  Label miss;
+
+  // Check the key is the cached one.
+  __ Branch(&miss, ne, a0, Operand(Handle<String>(name)));
+
+  LookupResult lookup;
+  LookupPostInterceptor(holder, name, &lookup);
+  GenerateLoadInterceptor(receiver,
+                          holder,
+                          &lookup,
+                          a1,
+                          a0,
+                          a2,
+                          a3,
+                          t0,
+                          name,
+                          &miss);
+  __ bind(&miss);
+  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);
+
+  return GetCode(INTERCEPTOR, name);
 }
 
 
 MaybeObject* KeyedLoadStubCompiler::CompileLoadArrayLength(String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- ra    : return address
+  //  -- a0    : key
+  //  -- a1    : receiver
+  // -----------------------------------
+  Label miss;
+
+  // Check the key is the cached one.
+  __ Branch(&miss, ne, a0, Operand(Handle<String>(name)));
+
+  GenerateLoadArrayLength(masm(), a1, a2, &miss);
+  __ bind(&miss);
+  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);
+
+  return GetCode(CALLBACKS, name);
 }
 
 
 MaybeObject* KeyedLoadStubCompiler::CompileLoadStringLength(String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- ra    : return address
+  //  -- a0    : key
+  //  -- a1    : receiver
+  // -----------------------------------
+  Label miss;
+
+  Counters* counters = masm()->isolate()->counters();
+  __ IncrementCounter(counters->keyed_load_string_length(), 1, a2, a3);
+
+  // Check the key is the cached one.
+  __ Branch(&miss, ne, a0, Operand(Handle<String>(name)));
+
+  GenerateLoadStringLength(masm(), a1, a2, a3, &miss, true);
+  __ bind(&miss);
+  __ DecrementCounter(counters->keyed_load_string_length(), 1, a2, a3);
+
+  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);
+
+  return GetCode(CALLBACKS, name);
 }
 
 
 MaybeObject* KeyedLoadStubCompiler::CompileLoadFunctionPrototype(String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- ra    : return address
+  //  -- a0    : key
+  //  -- a1    : receiver
+  // -----------------------------------
+  Label miss;
+
+  Counters* counters = masm()->isolate()->counters();
+  __ IncrementCounter(counters->keyed_load_function_prototype(), 1, a2, a3);
+
+  // Check the name hasn't changed.
+  __ Branch(&miss, ne, a0, Operand(Handle<String>(name)));
+
+  GenerateLoadFunctionPrototype(masm(), a1, a2, a3, &miss);
+  __ bind(&miss);
+  __ DecrementCounter(counters->keyed_load_function_prototype(), 1, a2, a3);
+  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);
+
+  return GetCode(CALLBACKS, name);
 }
 
 
 MaybeObject* KeyedLoadStubCompiler::CompileLoadSpecialized(JSObject* receiver) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- ra    : return address
+  //  -- a0    : key
+  //  -- a1    : receiver
+  // -----------------------------------
+  Label miss;
+
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(a1, &miss);
+
+  // Check that the map matches.
+  __ lw(a2, FieldMemOperand(a1, HeapObject::kMapOffset));
+  __ Branch(&miss, ne, a2, Operand(Handle<Map>(receiver->map())));
+
+  // Check that the key is a smi.
+  __ JumpIfNotSmi(a0, &miss);
+
+  // Get the elements array.
+  __ lw(a2, FieldMemOperand(a1, JSObject::kElementsOffset));
+  __ AssertFastElements(a2);
+
+  // Check that the key is within bounds.
+  __ lw(a3, FieldMemOperand(a2, FixedArray::kLengthOffset));
+  __ Branch(&miss, hs, a0, Operand(a3));
+
+  // Load the result and make sure it's not the hole.
+  __ Addu(a3, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
+  ASSERT(kSmiTag == 0 && kSmiTagSize < kPointerSizeLog2);
+  __ sll(t1, a0, kPointerSizeLog2 - kSmiTagSize);
+  __ Addu(t1, t1, a3);
+  __ lw(t0, MemOperand(t1));
+  __ LoadRoot(t1, Heap::kTheHoleValueRootIndex);
+  __ Branch(&miss, eq, t0, Operand(t1));
+  __ mov(v0, t0);
+  __ Ret();
+
+  __ bind(&miss);
+  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);
+
+  // Return the generated code.
+  return GetCode(NORMAL, NULL);
 }
 
 
 MaybeObject* KeyedStoreStubCompiler::CompileStoreField(JSObject* object,
                                                        int index,
                                                        Map* transition,
                                                        String* name) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a0    : value
+  //  -- a1    : key
+  //  -- a2    : receiver
+  //  -- ra    : return address
+  // -----------------------------------
+
+  Label miss;
+
+  Counters* counters = masm()->isolate()->counters();
+  __ IncrementCounter(counters->keyed_store_field(), 1, a3, t0);
+
+  // Check that the name has not changed.
+  __ Branch(&miss, ne, a1, Operand(Handle<String>(name)));
+
+  // a3 is used as scratch register. a1 and a2 keep their values if a jump to
+  // the miss label is generated.
+  GenerateStoreField(masm(),
+                     object,
+                     index,
+                     transition,
+                     a2, a1, a3,
+                     &miss);
+  __ bind(&miss);
+
+  __ DecrementCounter(counters->keyed_store_field(), 1, a3, t0);
+  Handle<Code> ic = masm()->isolate()->builtins()->KeyedStoreIC_Miss();
+  __ Jump(ic, RelocInfo::CODE_TARGET);
+
+  // Return the generated code.
+  return GetCode(transition == NULL ? FIELD : MAP_TRANSITION, name);
 }
 
 
 MaybeObject* KeyedStoreStubCompiler::CompileStoreSpecialized(
     JSObject* receiver) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ----------- S t a t e -------------
+  //  -- a0    : value
+  //  -- a1    : key
+  //  -- a2    : receiver
+  //  -- ra    : return address
+  //  -- a3    : scratch
+  //  -- t0    : scratch (elements)
+  // -----------------------------------
+  Label miss;
+  Register value_reg = a0;
+  Register key_reg = a1;
+  Register receiver_reg = a2;
+  Register scratch = a3;
+  Register elements_reg = t0;
+
+  // Check that the receiver isn't a smi.
+  __ JumpIfSmi(receiver_reg, &miss);
+
+  // Check that the map matches.
+  __ lw(scratch, FieldMemOperand(receiver_reg, HeapObject::kMapOffset));
+  __ Branch(&miss, ne, scratch, Operand(Handle<Map>(receiver->map())));
+
+  // Check that the key is a smi.
+  __ JumpIfNotSmi(key_reg, &miss);
+
+  // Get the elements array and make sure it is a fast element array, not 'cow'.
+  __ lw(elements_reg,
+        FieldMemOperand(receiver_reg, JSObject::kElementsOffset));
+  __ lw(scratch, FieldMemOperand(elements_reg, HeapObject::kMapOffset));
+  __ Branch(&miss, ne, scratch,
+      Operand(Handle<Map>(FACTORY->fixed_array_map())));
+
+  // Check that the key is within bounds.
+  if (receiver->IsJSArray()) {
+    __ lw(scratch, FieldMemOperand(receiver_reg, JSArray::kLengthOffset));
+  } else {
+    __ lw(scratch, FieldMemOperand(elements_reg, FixedArray::kLengthOffset));
+  }
+  // Compare smis.
+  __ Branch(&miss, hs, key_reg, Operand(scratch));
+  __ Addu(scratch,
+          elements_reg, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
+  ASSERT(kSmiTag == 0 && kSmiTagSize < kPointerSizeLog2);
+  __ sll(key_reg, key_reg, kPointerSizeLog2 - kSmiTagSize);
+  __ Addu(v0, scratch, key_reg);
+  __ sw(value_reg, MemOperand(v0));
+  __ RecordWrite(scratch, Operand(key_reg), receiver_reg , elements_reg);
+
+  // value_reg (a0) is preserved.
+  // Done.
+  __ mov(v0, value_reg);
+  __ Ret();
+
+  __ bind(&miss);
+  Handle<Code> ic = masm()->isolate()->builtins()->KeyedStoreIC_Miss();
+  __ Jump(ic, RelocInfo::CODE_TARGET);
+
+  // Return the generated code.
+  return GetCode(NORMAL, NULL);
 }
 
 
 MaybeObject* ConstructStubCompiler::CompileConstructStub(JSFunction* function) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // a0    : argc
+  // a1    : constructor
+  // ra    : return address
+  // [sp]  : last argument
+  Label generic_stub_call;
+
+  // Use t7 for holding undefined which is used in several places below.
+  __ LoadRoot(t7, Heap::kUndefinedValueRootIndex);
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+  // Check to see whether there are any break points in the function code. If
+  // there are jump to the generic constructor stub which calls the actual
+  // code for the function thereby hitting the break points.
+  __ lw(t5, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
+  __ lw(a2, FieldMemOperand(t5, SharedFunctionInfo::kDebugInfoOffset));
+  __ Branch(&generic_stub_call, ne, a2, Operand(t7));
+#endif
+
+  // Load the initial map and verify that it is in fact a map.
+  // a1: constructor function
+  // t7: undefined
+  __ lw(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset));
+  __ And(t0, a2, Operand(kSmiTagMask));
+  __ Branch(&generic_stub_call, eq, t0, Operand(zero_reg));
+  __ GetObjectType(a2, a3, t0);
+  __ Branch(&generic_stub_call, ne, t0, Operand(MAP_TYPE));
+
+#ifdef DEBUG
+  // Cannot construct functions this way.
+  // a0: argc
+  // a1: constructor function
+  // a2: initial map
+  // t7: undefined
+  __ lbu(a3, FieldMemOperand(a2, Map::kInstanceTypeOffset));
+  __ Check(ne, "Function constructed by construct stub.",
+      a3, Operand(JS_FUNCTION_TYPE));
+#endif
+
+  // Now allocate the JSObject in new space.
+  // a0: argc
+  // a1: constructor function
+  // a2: initial map
+  // t7: undefined
+  __ lbu(a3, FieldMemOperand(a2, Map::kInstanceSizeOffset));
+  __ AllocateInNewSpace(a3,
+                        t4,
+                        t5,
+                        t6,
+                        &generic_stub_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.
+  // a0: argc
+  // a1: constructor function
+  // a2: initial map
+  // a3: object size (in words)
+  // t4: JSObject (not tagged)
+  // t7: undefined
+  __ 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);
+
+
+  // Calculate the location of the first argument. The stack contains only the
+  // argc arguments.
+  __ sll(a1, a0, kPointerSizeLog2);
+  __ Addu(a1, a1, sp);
+
+  // Fill all the in-object properties with undefined.
+  // a0: argc
+  // a1: first argument
+  // a3: object size (in words)
+  // t4: JSObject (not tagged)
+  // t5: First in-object property of JSObject (not tagged)
+  // t7: undefined
+  // Fill the initialized properties with a constant value or a passed argument
+  // depending on the this.x = ...; assignment in the function.
+  SharedFunctionInfo* shared = function->shared();
+  for (int i = 0; i < shared->this_property_assignments_count(); i++) {
+    if (shared->IsThisPropertyAssignmentArgument(i)) {
+      Label not_passed, next;
+      // Check if the argument assigned to the property is actually passed.
+      int arg_number = shared->GetThisPropertyAssignmentArgument(i);
+      __ Branch(&not_passed, less_equal, a0, Operand(arg_number));
+      // Argument passed - find it on the stack.
+      __ lw(a2, MemOperand(a1, (arg_number + 1) * -kPointerSize));
+      __ sw(a2, MemOperand(t5));
+      __ Addu(t5, t5, kPointerSize);
+      __ jmp(&next);
+      __ bind(&not_passed);
+      // Set the property to undefined.
+      __ sw(t7, MemOperand(t5));
+      __ Addu(t5, t5, Operand(kPointerSize));
+      __ bind(&next);
+    } else {
+      // Set the property to the constant value.
+      Handle<Object> constant(shared->GetThisPropertyAssignmentConstant(i));
+      __ li(a2, Operand(constant));
+      __ sw(a2, MemOperand(t5));
+      __ Addu(t5, t5, kPointerSize);
+    }
+  }
+
+  // Fill the unused in-object property fields with undefined.
+  ASSERT(function->has_initial_map());
+  for (int i = shared->this_property_assignments_count();
+       i < function->initial_map()->inobject_properties();
+       i++) {
+      __ sw(t7, MemOperand(t5));
+      __ Addu(t5, t5, kPointerSize);
+  }
+
+  // a0: argc
+  // t4: JSObject (not tagged)
+  // Move argc to a1 and the JSObject to return to v0 and tag it.
+  __ mov(a1, a0);
+  __ mov(v0, t4);
+  __ Or(v0, v0, Operand(kHeapObjectTag));
+
+  // v0: JSObject
+  // a1: argc
+  // Remove caller arguments and receiver from the stack and return.
+  __ sll(t0, a1, kPointerSizeLog2);
+  __ Addu(sp, sp, t0);
+  __ Addu(sp, sp, Operand(kPointerSize));
+  Counters* counters = masm()->isolate()->counters();
+  __ IncrementCounter(counters->constructed_objects(), 1, a1, a2);
+  __ IncrementCounter(counters->constructed_objects_stub(), 1, a1, a2);
+  __ Ret();
+
+  // Jump to the generic stub in case the specialized code cannot handle the
+  // construction.
+  __ bind(&generic_stub_call);
+  Handle<Code> generic_construct_stub =
+      masm()->isolate()->builtins()->JSConstructStubGeneric();
+  __ Jump(generic_construct_stub, RelocInfo::CODE_TARGET);
+
+  // Return the generated code.
+  return GetCode();
+}
+
+
+static bool IsElementTypeSigned(ExternalArrayType array_type) {
+  switch (array_type) {
+    case kExternalByteArray:
+    case kExternalShortArray:
+    case kExternalIntArray:
+      return true;
+
+    case kExternalUnsignedByteArray:
+    case kExternalUnsignedShortArray:
+    case kExternalUnsignedIntArray:
+      return false;
+
+    default:
+      UNREACHABLE();
+      return false;
+  }
 }
 
 
 MaybeObject* ExternalArrayStubCompiler::CompileKeyedLoadStub(
     JSObject* receiver_object,
     ExternalArrayType array_type,
     Code::Flags flags) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ---------- S t a t e --------------
+  //  -- ra     : return address
+  //  -- a0     : key
+  //  -- a1     : receiver
+  // -----------------------------------
+  Label slow, failed_allocation;
+
+  Register key = a0;
+  Register receiver = a1;
+
+  // Check that the object isn't a smi.
+  __ JumpIfSmi(receiver, &slow);
+
+  // Check that the key is a smi.
+  __ JumpIfNotSmi(key, &slow);
+
+  // Make sure that we've got the right map.
+  __ lw(a2, FieldMemOperand(receiver, HeapObject::kMapOffset));
+  __ Branch(&slow, ne, a2, Operand(Handle<Map>(receiver_object->map())));
+
+  __ lw(a3, FieldMemOperand(receiver, JSObject::kElementsOffset));
+  // a3: elements array
+
+  // Check that the index is in range.
+  __ lw(t1, FieldMemOperand(a3, ExternalArray::kLengthOffset));
+  __ sra(t2, key, kSmiTagSize);
+  // Unsigned comparison catches both negative and too-large values.
+  __ Branch(&slow, Uless, t1, Operand(t2));
+
+
+  __ lw(a3, FieldMemOperand(a3, ExternalArray::kExternalPointerOffset));
+  // a3: base pointer of external storage
+
+  // We are not untagging smi key and instead work with it
+  // as if it was premultiplied by 2.
+  ASSERT((kSmiTag == 0) && (kSmiTagSize == 1));
+
+  Register value = a2;
+  switch (array_type) {
+    case kExternalByteArray:
+      __ srl(t2, key, 1);
+      __ addu(t3, a3, t2);
+      __ lb(value, MemOperand(t3, 0));
+      break;
+    case kExternalPixelArray:
+    case kExternalUnsignedByteArray:
+      __ srl(t2, key, 1);
+      __ addu(t3, a3, t2);
+      __ lbu(value, MemOperand(t3, 0));
+      break;
+    case kExternalShortArray:
+      __ addu(t3, a3, key);
+      __ lh(value, MemOperand(t3, 0));
+      break;
+    case kExternalUnsignedShortArray:
+      __ addu(t3, a3, key);
+      __ lhu(value, MemOperand(t3, 0));
+      break;
+    case kExternalIntArray:
+    case kExternalUnsignedIntArray:
+      __ sll(t2, key, 1);
+      __ addu(t3, a3, t2);
+      __ lw(value, MemOperand(t3, 0));
+      break;
+    case kExternalFloatArray:
+      __ sll(t3, t2, 2);
+      __ addu(t3, a3, t3);
+      if (CpuFeatures::IsSupported(FPU)) {
+        CpuFeatures::Scope scope(FPU);
+        __ lwc1(f0, MemOperand(t3, 0));
+      } else {
+        __ lw(value, MemOperand(t3, 0));
+      }
+      break;
+    case kExternalDoubleArray:
+      __ sll(t2, key, 2);
+      __ addu(t3, a3, t2);
+      if (CpuFeatures::IsSupported(FPU)) {
+        CpuFeatures::Scope scope(FPU);
+        __ ldc1(f0, MemOperand(t3, 0));
+      } else {
+        // t3: pointer to the beginning of the double we want to load.
+        __ lw(a2, MemOperand(t3, 0));
+        __ lw(a3, MemOperand(t3, Register::kSizeInBytes));
+      }
+      break;
+    default:
+      UNREACHABLE();
+      break;
+  }
+
+  // For integer array types:
+  // a2: value
+  // For float array type:
+  // f0: value (if FPU is supported)
+  // a2: value (if FPU is not supported)
+  // For double array type:
+  // f0: value (if FPU is supported)
+  // a2/a3: value (if FPU is not supported)
+
+  if (array_type == kExternalIntArray) {
+    // For the Int and UnsignedInt array types, we need to see whether
+    // the value can be represented in a Smi. If not, we need to convert
+    // it to a HeapNumber.
+    Label box_int;
+    __ Subu(t3, value, Operand(0xC0000000));  // Non-smi value gives neg result.
+    __ Branch(&box_int, lt, t3, Operand(zero_reg));
+    // Tag integer as smi and return it.
+    __ sll(v0, value, kSmiTagSize);
+    __ Ret();
+
+    __ bind(&box_int);
+    // Allocate a HeapNumber for the result and perform int-to-double
+    // conversion.
+    // The arm version uses a temporary here to save r0, but we don't need to
+    // (a0 is not modified).
+    __ LoadRoot(t1, Heap::kHeapNumberMapRootIndex);
+    __ AllocateHeapNumber(v0, a3, t0, t1, &slow);
+
+    if (CpuFeatures::IsSupported(FPU)) {
+      CpuFeatures::Scope scope(FPU);
+      __ mtc1(value, f0);
+      __ cvt_d_w(f0, f0);
+      __ sdc1(f0, MemOperand(v0, HeapNumber::kValueOffset - kHeapObjectTag));
+      __ Ret();
+    } else {
+      WriteInt32ToHeapNumberStub stub(value, v0, t2, t3);
+      __ TailCallStub(&stub);
+    }
+  } else if (array_type == kExternalUnsignedIntArray) {
+    // The test is different for unsigned int values. Since we need
+    // the value to be in the range of a positive smi, we can't
+    // handle either of the top two bits being set in the value.
+    if (CpuFeatures::IsSupported(FPU)) {
+      CpuFeatures::Scope scope(FPU);
+      Label pl_box_int;
+      __ And(t2, value, Operand(0xC0000000));
+      __ Branch(&pl_box_int, ne, t2, Operand(zero_reg));
+
+      // It can fit in an Smi.
+      // Tag integer as smi and return it.
+      __ sll(v0, value, kSmiTagSize);
+      __ Ret();
+
+      __ bind(&pl_box_int);
+      // Allocate a HeapNumber for the result and perform int-to-double
+      // conversion. Don't use a0 and a1 as AllocateHeapNumber clobbers all
+      // registers - also when jumping due to exhausted young space.
+      __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex);
+      __ AllocateHeapNumber(v0, t2, t3, t6, &slow);
+
+      // This is replaced by a macro:
+      // __ mtc1(value, f0);     // LS 32-bits.
+      // __ mtc1(zero_reg, f1);  // MS 32-bits are all zero.
+      // __ cvt_d_l(f0, f0); // Use 64 bit conv to get correct unsigned 32-bit.
+
+      __ Cvt_d_uw(f0, value);
+
+      __ sdc1(f0, MemOperand(v0, HeapNumber::kValueOffset - kHeapObjectTag));
+
+      __ Ret();
+    } else {
+      // Check whether unsigned integer fits into smi.
+      Label box_int_0, box_int_1, done;
+      __ And(t2, value, Operand(0x80000000));
+      __ Branch(&box_int_0, ne, t2, Operand(zero_reg));
+      __ And(t2, value, Operand(0x40000000));
+      __ Branch(&box_int_1, ne, t2, Operand(zero_reg));
+
+      // Tag integer as smi and return it.
+      __ sll(v0, value, kSmiTagSize);
+      __ Ret();
+
+      Register hiword = value;  // a2.
+      Register loword = a3;
+
+      __ bind(&box_int_0);
+      // Integer does not have leading zeros.
+      GenerateUInt2Double(masm(), hiword, loword, t0, 0);
+      __ Branch(&done);
+
+      __ bind(&box_int_1);
+      // Integer has one leading zero.
+      GenerateUInt2Double(masm(), hiword, loword, t0, 1);
+
+
+      __ bind(&done);
+      // Integer was converted to double in registers hiword:loword.
+      // Wrap it into a HeapNumber. Don't use a0 and a1 as AllocateHeapNumber
+      // clobbers all registers - also when jumping due to exhausted young
+      // space.
+      __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex);
+      __ AllocateHeapNumber(t2, t3, t5, t6, &slow);
+
+      __ sw(hiword, FieldMemOperand(t2, HeapNumber::kExponentOffset));
+      __ sw(loword, FieldMemOperand(t2, HeapNumber::kMantissaOffset));
+
+      __ mov(v0, t2);
+      __ Ret();
+    }
+  } else if (array_type == kExternalFloatArray) {
+    // For the floating-point array type, we need to always allocate a
+    // HeapNumber.
+    if (CpuFeatures::IsSupported(FPU)) {
+      CpuFeatures::Scope scope(FPU);
+      // Allocate a HeapNumber for the result. Don't use a0 and a1 as
+      // AllocateHeapNumber clobbers all registers - also when jumping due to
+      // exhausted young space.
+      __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex);
+      __ AllocateHeapNumber(v0, t3, t5, t6, &slow);
+      // The float (single) value is already in fpu reg f0 (if we use float).
+      __ cvt_d_s(f0, f0);
+      __ sdc1(f0, MemOperand(v0, HeapNumber::kValueOffset - kHeapObjectTag));
+      __ Ret();
+    } else {
+      // Allocate a HeapNumber for the result. Don't use a0 and a1 as
+      // AllocateHeapNumber clobbers all registers - also when jumping due to
+      // exhausted young space.
+      __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex);
+      __ AllocateHeapNumber(v0, t3, t5, t6, &slow);
+      // FPU is not available, do manual single to double conversion.
+
+      // a2: floating point value (binary32).
+      // v0: heap number for result
+
+      // Extract mantissa to t4.
+      __ And(t4, value, Operand(kBinary32MantissaMask));
+
+      // Extract exponent to t5.
+      __ srl(t5, value, kBinary32MantissaBits);
+      __ And(t5, t5, Operand(kBinary32ExponentMask >> kBinary32MantissaBits));
+
+      Label exponent_rebiased;
+      __ Branch(&exponent_rebiased, eq, t5, Operand(zero_reg));
+
+      __ li(t0, 0x7ff);
+      __ Xor(t1, t5, Operand(0xFF));
+      __ movz(t5, t0, t1);  // Set t5 to 0x7ff only if t5 is equal to 0xff.
+      __ Branch(&exponent_rebiased, eq, t0, Operand(0xff));
+
+      // Rebias exponent.
+      __ Addu(t5,
+              t5,
+              Operand(-kBinary32ExponentBias + HeapNumber::kExponentBias));
+
+      __ bind(&exponent_rebiased);
+      __ And(a2, value, Operand(kBinary32SignMask));
+      value = no_reg;
+      __ sll(t0, t5, HeapNumber::kMantissaBitsInTopWord);
+      __ or_(a2, a2, t0);
+
+      // Shift mantissa.
+      static const int kMantissaShiftForHiWord =
+          kBinary32MantissaBits - HeapNumber::kMantissaBitsInTopWord;
+
+      static const int kMantissaShiftForLoWord =
+          kBitsPerInt - kMantissaShiftForHiWord;
+
+      __ srl(t0, t4, kMantissaShiftForHiWord);
+      __ or_(a2, a2, t0);
+      __ sll(a0, t4, kMantissaShiftForLoWord);
+
+      __ sw(a2, FieldMemOperand(v0, HeapNumber::kExponentOffset));
+      __ sw(a0, FieldMemOperand(v0, HeapNumber::kMantissaOffset));
+      __ Ret();
+    }
+
+  } else if (array_type == kExternalDoubleArray) {
+    if (CpuFeatures::IsSupported(FPU)) {
+      CpuFeatures::Scope scope(FPU);
+      // Allocate a HeapNumber for the result. Don't use a0 and a1 as
+      // AllocateHeapNumber clobbers all registers - also when jumping due to
+      // exhausted young space.
+      __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex);
+      __ AllocateHeapNumber(v0, t3, t5, t6, &slow);
+      // The double value is already in f0
+      __ sdc1(f0, FieldMemOperand(v0, HeapNumber::kValueOffset));
+      __ Ret();
+    } else {
+      // Allocate a HeapNumber for the result. Don't use a0 and a1 as
+      // AllocateHeapNumber clobbers all registers - also when jumping due to
+      // exhausted young space.
+      __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex);
+      __ AllocateHeapNumber(v0, t3, t5, t6, &slow);
+
+      __ sw(a2, FieldMemOperand(v0, HeapNumber::kMantissaOffset));
+      __ sw(a3, FieldMemOperand(v0, HeapNumber::kExponentOffset));
+      __ Ret();
+    }
+
+  } else {
+    // Tag integer as smi and return it.
+    __ sll(v0, value, kSmiTagSize);
+    __ Ret();
+  }
+
+  // Slow case, key and receiver still in a0 and a1.
+  __ bind(&slow);
+  __ IncrementCounter(
+      masm()->isolate()->counters()->keyed_load_external_array_slow(),
+      1, a2, a3);
+
+  // ---------- S t a t e --------------
+  //  -- ra     : return address
+  //  -- a0     : key
+  //  -- a1     : receiver
+  // -----------------------------------
+
+  __ Push(a1, a0);
+
+  __ TailCallRuntime(Runtime::kKeyedGetProperty, 2, 1);
+
+  return GetCode(flags);
 }
 
 
+
+
 MaybeObject* ExternalArrayStubCompiler::CompileKeyedStoreStub(
     JSObject* receiver_object,
     ExternalArrayType array_type,
     Code::Flags flags) {
-  UNIMPLEMENTED_MIPS();
-  return NULL;
+  // ---------- S t a t e --------------
+  //  -- a0     : value
+  //  -- a1     : key
+  //  -- a2     : receiver
+  //  -- ra     : return address
+  // -----------------------------------
+
+  Label slow, check_heap_number;
+
+  // Register usage.
+  Register value = a0;
+  Register key = a1;
+  Register receiver = a2;
+  // a3 mostly holds the elements array or the destination external array.
+
+  // Check that the object isn't a smi.
+  __ JumpIfSmi(receiver, &slow);
+
+  // Make sure that we've got the right map.
+  __ lw(a3, FieldMemOperand(receiver, HeapObject::kMapOffset));
+  __ Branch(&slow, ne, a3, Operand(Handle<Map>(receiver_object->map())));
+
+  __ lw(a3, FieldMemOperand(receiver, JSObject::kElementsOffset));
+
+  // Check that the key is a smi.
+  __ JumpIfNotSmi(key, &slow);
+
+  // Check that the index is in range.
+  __ SmiUntag(t0, key);
+  __ lw(t1, FieldMemOperand(a3, ExternalArray::kLengthOffset));
+  // Unsigned comparison catches both negative and too-large values.
+  __ Branch(&slow, Ugreater_equal, t0, Operand(t1));
+
+  // Handle both smis and HeapNumbers in the fast path. Go to the
+  // runtime for all other kinds of values.
+  // a3: external array.
+  // t0: key (integer).
+
+  if (array_type == kExternalPixelArray) {
+    // Double to pixel conversion is only implemented in the runtime for now.
+    __ JumpIfNotSmi(value, &slow);
+  } else {
+    __ JumpIfNotSmi(value, &check_heap_number);
+  }
+  __ SmiUntag(t1, value);
+  __ lw(a3, FieldMemOperand(a3, ExternalArray::kExternalPointerOffset));
+
+  // a3: base pointer of external storage.
+  // t0: key (integer).
+  // t1: value (integer).
+
+  switch (array_type) {
+    case kExternalPixelArray: {
+      // Clamp the value to [0..255].
+      // v0 is used as a scratch register here.
+      Label done;
+      __ li(v0, Operand(255));
+      // Normal branch: nop in delay slot.
+      __ Branch(&done, gt, t1, Operand(v0));
+      // Use delay slot in this branch.
+      __ Branch(USE_DELAY_SLOT, &done, lt, t1, Operand(zero_reg));
+      __ mov(v0, zero_reg);  // In delay slot.
+      __ mov(v0, t1);  // Value is in range 0..255.
+      __ bind(&done);
+      __ mov(t1, v0);
+      __ addu(t8, a3, t0);
+      __ sb(t1, MemOperand(t8, 0));
+      }
+      break;
+    case kExternalByteArray:
+    case kExternalUnsignedByteArray:
+      __ addu(t8, a3, t0);
+      __ sb(t1, MemOperand(t8, 0));
+      break;
+    case kExternalShortArray:
+    case kExternalUnsignedShortArray:
+      __ sll(t8, t0, 1);
+      __ addu(t8, a3, t8);
+      __ sh(t1, MemOperand(t8, 0));
+      break;
+    case kExternalIntArray:
+    case kExternalUnsignedIntArray:
+      __ sll(t8, t0, 2);
+      __ addu(t8, a3, t8);
+      __ sw(t1, MemOperand(t8, 0));
+      break;
+    case kExternalFloatArray:
+      // Perform int-to-float conversion and store to memory.
+      StoreIntAsFloat(masm(), a3, t0, t1, t2, t3, t4);
+      break;
+    case kExternalDoubleArray:
+      __ sll(t8, t0, 3);
+      __ addu(a3, a3, t8);
+      // a3: effective address of the double element
+      FloatingPointHelper::Destination destination;
+      if (CpuFeatures::IsSupported(FPU)) {
+        destination = FloatingPointHelper::kFPURegisters;
+      } else {
+        destination = FloatingPointHelper::kCoreRegisters;
+      }
+      FloatingPointHelper::ConvertIntToDouble(
+          masm(), t1, destination,
+          f0, t2, t3,  // These are: double_dst, dst1, dst2.
+          t0, f2);  // These are: scratch2, single_scratch.
+      if (destination == FloatingPointHelper::kFPURegisters) {
+        CpuFeatures::Scope scope(FPU);
+        __ sdc1(f0, MemOperand(a3, 0));
+      } else {
+        __ sw(t2, MemOperand(a3, 0));
+        __ sw(t3, MemOperand(a3, Register::kSizeInBytes));
+      }
+      break;
+    default:
+      UNREACHABLE();
+      break;
+  }
+
+  // Entry registers are intact, a0 holds the value which is the return value.
+  __ mov(v0, value);
+  __ Ret();
+
+  if (array_type != kExternalPixelArray) {
+    // a3: external array.
+    // t0: index (integer).
+    __ bind(&check_heap_number);
+    __ GetObjectType(value, t1, t2);
+    __ Branch(&slow, ne, t2, Operand(HEAP_NUMBER_TYPE));
+
+    __ lw(a3, FieldMemOperand(a3, ExternalArray::kExternalPointerOffset));
+
+    // a3: base pointer of external storage.
+    // t0: key (integer).
+
+    // The WebGL specification leaves the behavior of storing NaN and
+    // +/-Infinity into integer arrays basically undefined. For more
+    // reproducible behavior, convert these to zero.
+
+    if (CpuFeatures::IsSupported(FPU)) {
+      CpuFeatures::Scope scope(FPU);
+
+      __ ldc1(f0, FieldMemOperand(a0, HeapNumber::kValueOffset));
+
+      if (array_type == kExternalFloatArray) {
+        __ cvt_s_d(f0, f0);
+        __ sll(t8, t0, 2);
+        __ addu(t8, a3, t8);
+        __ swc1(f0, MemOperand(t8, 0));
+      } else if (array_type == kExternalDoubleArray) {
+        __ sll(t8, t0, 3);
+        __ addu(t8, a3, t8);
+        __ sdc1(f0, MemOperand(t8, 0));
+      } else {
+        Label done;
+
+        // Need to perform float-to-int conversion.
+        // Test whether exponent equal to 0x7FF (infinity or NaN).
+
+        __ mfc1(t3, f1);  // Move exponent word of double to t3 (as raw bits).
+        __ li(t1, Operand(0x7FF00000));
+        __ And(t3, t3, Operand(t1));
+        __ Branch(USE_DELAY_SLOT, &done, eq, t3, Operand(t1));
+        __ mov(t3, zero_reg);  // In delay slot.
+
+        // Not infinity or NaN simply convert to int.
+        if (IsElementTypeSigned(array_type)) {
+          __ trunc_w_d(f0, f0);
+          __ mfc1(t3, f0);
+        } else {
+          __ Trunc_uw_d(f0, t3);
+        }
+
+        // t3: HeapNumber converted to integer
+        __ bind(&done);
+        switch (array_type) {
+          case kExternalByteArray:
+          case kExternalUnsignedByteArray:
+            __ addu(t8, a3, t0);
+            __ sb(t3, MemOperand(t8, 0));
+            break;
+          case kExternalShortArray:
+          case kExternalUnsignedShortArray:
+            __ sll(t8, t0, 1);
+            __ addu(t8, a3, t8);
+            __ sh(t3, MemOperand(t8, 0));
+            break;
+          case kExternalIntArray:
+          case kExternalUnsignedIntArray:
+            __ sll(t8, t0, 2);
+            __ addu(t8, a3, t8);
+            __ sw(t3, MemOperand(t8, 0));
+            break;
+          default:
+            UNREACHABLE();
+            break;
+        }
+      }
+
+      // Entry registers are intact, a0 holds the value
+      // which is the return value.
+      __ mov(v0, value);
+      __ Ret();
+    } else {
+      // FPU is not available, do manual conversions.
+
+      __ lw(t3, FieldMemOperand(value, HeapNumber::kExponentOffset));
+      __ lw(t4, FieldMemOperand(value, HeapNumber::kMantissaOffset));
+
+      if (array_type == kExternalFloatArray) {
+        Label done, nan_or_infinity_or_zero;
+        static const int kMantissaInHiWordShift =
+            kBinary32MantissaBits - HeapNumber::kMantissaBitsInTopWord;
+
+        static const int kMantissaInLoWordShift =
+            kBitsPerInt - kMantissaInHiWordShift;
+
+        // Test for all special exponent values: zeros, subnormal numbers, NaNs
+        // and infinities. All these should be converted to 0.
+        __ li(t5, HeapNumber::kExponentMask);
+        __ and_(t6, t3, t5);
+        __ Branch(&nan_or_infinity_or_zero, eq, t6, Operand(zero_reg));
+
+        __ xor_(t1, t6, t5);
+        __ li(t2, kBinary32ExponentMask);
+        __ movz(t6, t2, t1);  // Only if t6 is equal to t5.
+        __ Branch(&nan_or_infinity_or_zero, eq, t6, Operand(t5));
+
+        // Rebias exponent.
+        __ srl(t6, t6, HeapNumber::kExponentShift);
+        __ Addu(t6,
+                t6,
+                Operand(kBinary32ExponentBias - HeapNumber::kExponentBias));
+
+        __ li(t1, Operand(kBinary32MaxExponent));
+        __ Slt(t1, t1, t6);
+        __ And(t2, t3, Operand(HeapNumber::kSignMask));
+        __ Or(t2, t2, Operand(kBinary32ExponentMask));
+        __ movn(t3, t2, t1);  // Only if t6 is gt kBinary32MaxExponent.
+        __ Branch(&done, gt, t6, Operand(kBinary32MaxExponent));
+
+        __ Slt(t1, t6, Operand(kBinary32MinExponent));
+        __ And(t2, t3, Operand(HeapNumber::kSignMask));
+        __ movn(t3, t2, t1);  // Only if t6 is lt kBinary32MinExponent.
+        __ Branch(&done, lt, t6, Operand(kBinary32MinExponent));
+
+        __ And(t7, t3, Operand(HeapNumber::kSignMask));
+        __ And(t3, t3, Operand(HeapNumber::kMantissaMask));
+        __ sll(t3, t3, kMantissaInHiWordShift);
+        __ or_(t7, t7, t3);
+        __ srl(t4, t4, kMantissaInLoWordShift);
+        __ or_(t7, t7, t4);
+        __ sll(t6, t6, kBinary32ExponentShift);
+        __ or_(t3, t7, t6);
+
+        __ bind(&done);
+        __ sll(t9, a1, 2);
+        __ addu(t9, a2, t9);
+        __ sw(t3, MemOperand(t9, 0));
+
+        // Entry registers are intact, a0 holds the value which is the return
+        // value.
+        __ mov(v0, value);
+        __ Ret();
+
+        __ bind(&nan_or_infinity_or_zero);
+        __ And(t7, t3, Operand(HeapNumber::kSignMask));
+        __ And(t3, t3, Operand(HeapNumber::kMantissaMask));
+        __ or_(t6, t6, t7);
+        __ sll(t3, t3, kMantissaInHiWordShift);
+        __ or_(t6, t6, t3);
+        __ srl(t4, t4, kMantissaInLoWordShift);
+        __ or_(t3, t6, t4);
+        __ Branch(&done);
+      } else if (array_type == kExternalDoubleArray) {
+        __ sll(t8, t0, 3);
+        __ addu(t8, a3, t8);
+        // t8: effective address of destination element.
+        __ sw(t4, MemOperand(t8, 0));
+        __ sw(t3, MemOperand(t8, Register::kSizeInBytes));
+        __ Ret();
+      } else {
+        bool is_signed_type  = IsElementTypeSigned(array_type);
+        int meaningfull_bits = is_signed_type ? (kBitsPerInt - 1) : kBitsPerInt;
+        int32_t min_value    = is_signed_type ? 0x80000000 : 0x00000000;
+
+        Label done, sign;
+
+        // Test for all special exponent values: zeros, subnormal numbers, NaNs
+        // and infinities. All these should be converted to 0.
+        __ li(t5, HeapNumber::kExponentMask);
+        __ and_(t6, t3, t5);
+        __ movz(t3, zero_reg, t6);  // Only if t6 is equal to zero.
+        __ Branch(&done, eq, t6, Operand(zero_reg));
+
+        __ xor_(t2, t6, t5);
+        __ movz(t3, zero_reg, t2);  // Only if t6 is equal to t5.
+        __ Branch(&done, eq, t6, Operand(t5));
+
+        // Unbias exponent.
+        __ srl(t6, t6, HeapNumber::kExponentShift);
+        __ Subu(t6, t6, Operand(HeapNumber::kExponentBias));
+        // If exponent is negative then result is 0.
+        __ slt(t2, t6, zero_reg);
+        __ movn(t3, zero_reg, t2);  // Only if exponent is negative.
+        __ Branch(&done, lt, t6, Operand(zero_reg));
+
+        // If exponent is too big then result is minimal value.
+        __ slti(t1, t6, meaningfull_bits - 1);
+        __ li(t2, min_value);
+        __ movz(t3, t2, t1);  // Only if t6 is ge meaningfull_bits - 1.
+        __ Branch(&done, ge, t6, Operand(meaningfull_bits - 1));
+
+        __ And(t5, t3, Operand(HeapNumber::kSignMask));
+        __ And(t3, t3, Operand(HeapNumber::kMantissaMask));
+        __ Or(t3, t3, Operand(1u << HeapNumber::kMantissaBitsInTopWord));
+
+        __ li(t9, HeapNumber::kMantissaBitsInTopWord);
+        __ subu(t6, t9, t6);
+        __ slt(t1, t6, zero_reg);
+        __ srlv(t2, t3, t6);
+        __ movz(t3, t2, t1);  // Only if t6 is positive.
+        __ Branch(&sign, ge, t6, Operand(zero_reg));
+
+        __ subu(t6, zero_reg, t6);
+        __ sllv(t3, t3, t6);
+        __ li(t9, meaningfull_bits);
+        __ subu(t6, t9, t6);
+        __ srlv(t4, t4, t6);
+        __ or_(t3, t3, t4);
+
+        __ bind(&sign);
+        __ subu(t2, t3, zero_reg);
+        __ movz(t3, t2, t5);  // Only if t5 is zero.
+
+        __ bind(&done);
+
+        // Result is in t3.
+        // This switch block should be exactly the same as above (FPU mode).
+        switch (array_type) {
+          case kExternalByteArray:
+          case kExternalUnsignedByteArray:
+            __ addu(t8, a3, t0);
+            __ sb(t3, MemOperand(t8, 0));
+            break;
+          case kExternalShortArray:
+          case kExternalUnsignedShortArray:
+            __ sll(t8, t0, 1);
+            __ addu(t8, a3, t8);
+            __ sh(t3, MemOperand(t8, 0));
+            break;
+          case kExternalIntArray:
+          case kExternalUnsignedIntArray:
+            __ sll(t8, t0, 2);
+            __ addu(t8, a3, t8);
+            __ sw(t3, MemOperand(t8, 0));
+            break;
+          default:
+            UNREACHABLE();
+            break;
+        }
+      }
+    }
+  }
+
+  // Slow case: call runtime.
+  __ bind(&slow);
+  // Entry registers are intact.
+  // ---------- S t a t e --------------
+  //  -- a0     : value
+  //  -- a1     : key
+  //  -- a2     : receiver
+  //  -- ra     : return address
+  // -----------------------------------
+
+  // Push receiver, key and value for runtime call.
+  __ Push(a2, a1, a0);
+
+  __ li(a1, Operand(Smi::FromInt(NONE)));  // PropertyAttributes.
+  __ li(a0, Operand(Smi::FromInt(
+       Code::ExtractExtraICStateFromFlags(flags) & kStrictMode)));
+  __ Push(a1, a0);
+
+  __ TailCallRuntime(Runtime::kSetProperty, 5, 1);
+
+  return GetCode(flags);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS