MIPS64: Add big-endian support for mips64.

src/mips64/lithium-codegen-mips64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/cpu-profiler.h"
 #include "src/hydrogen-osr.h"
 #include "src/ic/ic.h"
 #include "src/ic/stub-cache.h"
@@ skipping 2969 matching lines @@
     if (FLAG_debug_code) {
       // Verify this is really an Smi.
       Register scratch = scratch0();
       __ Load(scratch, FieldMemOperand(object, offset), representation);
       __ AssertSmi(scratch);
     }
 
     // Read int value directly from upper half of the smi.
     STATIC_ASSERT(kSmiTag == 0);
     STATIC_ASSERT(kSmiTagSize + kSmiShiftSize == 32);
-    offset += kPointerSize / 2;
+    offset = SmiWordOffset(offset);
     representation = Representation::Integer32();
   }
   __ Load(result, FieldMemOperand(object, offset), representation);
 }
 
 
 void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) {
   DCHECK(ToRegister(instr->context()).is(cp));
   DCHECK(ToRegister(instr->object()).is(LoadDescriptor::ReceiverRegister()));
   DCHECK(ToRegister(instr->result()).is(v0));
@@ skipping 253 matching lines @@
     DCHECK(!hinstr->RequiresHoleCheck());
     if (FLAG_debug_code) {
       Register temp = scratch1();
       __ Load(temp, MemOperand(store_base, offset), Representation::Smi());
       __ AssertSmi(temp);
     }
 
     // Read int value directly from upper half of the smi.
     STATIC_ASSERT(kSmiTag == 0);
     STATIC_ASSERT(kSmiTagSize + kSmiShiftSize == 32);
-    offset += kPointerSize / 2;
+    offset = SmiWordOffset(offset);
   }
 
   __ Load(result, MemOperand(store_base, offset), representation);
 
   // Check for the hole value.
   if (hinstr->RequiresHoleCheck()) {
     if (IsFastSmiElementsKind(instr->hydrogen()->elements_kind())) {
       __ SmiTst(result, scratch);
       DeoptimizeIf(ne, instr, Deoptimizer::kNotASmi, scratch,
                    Operand(zero_reg));
@@ skipping 926 matching lines @@
   }
 
   if (representation.IsSmi() && SmiValuesAre32Bits() &&
       instr->hydrogen()->value()->representation().IsInteger32()) {
     DCHECK(instr->hydrogen()->store_mode() == STORE_TO_INITIALIZED_ENTRY);
     if (FLAG_debug_code) {
       __ Load(scratch2, FieldMemOperand(destination, offset), representation);
       __ AssertSmi(scratch2);
     }
     // Store int value directly to upper half of the smi.
-    offset += kPointerSize / 2;
+    offset = SmiWordOffset(offset);
     representation = Representation::Integer32();
   }
   MemOperand operand = FieldMemOperand(destination, offset);
 
   if (FLAG_unbox_double_fields && representation.IsDouble()) {
     DCHECK(access.IsInobject());
     DoubleRegister value = ToDoubleRegister(instr->value());
     __ sdc1(value, operand);
   } else {
     DCHECK(instr->value()->IsRegister());
@@ skipping 245 matching lines @@
     DCHECK(instr->hydrogen()->elements_kind() == FAST_SMI_ELEMENTS);
     if (FLAG_debug_code) {
       Register temp = scratch1();
       __ Load(temp, MemOperand(store_base, offset), Representation::Smi());
       __ AssertSmi(temp);
     }
 
     // Store int value directly to upper half of the smi.
     STATIC_ASSERT(kSmiTag == 0);
     STATIC_ASSERT(kSmiTagSize + kSmiShiftSize == 32);
-    offset += kPointerSize / 2;
+    offset = SmiWordOffset(offset);
     representation = Representation::Integer32();
   }
 
   __ Store(value, MemOperand(store_base, offset), representation);
 
   if (instr->hydrogen()->NeedsWriteBarrier()) {
     SmiCheck check_needed =
         instr->hydrogen()->value()->type().IsHeapObject()
             ? OMIT_SMI_CHECK : INLINE_SMI_CHECK;
     // Compute address of modified element and store it into key register.
@@ skipping 1603 matching lines @@
   __ Push(at, ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8