Contribution of PowerPC port.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index e2414d290046927d3d3f4a7e13d3b09e0311d5df..956716354ccd0ed2e77675dd32b3aecfa787f445 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -3327,10 +3327,7 @@ uint32_t Name::hash_field() {
 
 
 void Name::set_hash_field(uint32_t value) {
-  WRITE_UINT32_FIELD(this, kHashFieldOffset, value);
-#if V8_HOST_ARCH_64_BIT
-  WRITE_UINT32_FIELD(this, kHashFieldOffset + kIntSize, 0);
-#endif
+  WRITE_INTPTR_FIELD(this, kHashFieldSlot, value);
 }
 
 
@@ -5498,25 +5495,30 @@ SMI_ACCESSORS(SharedFunctionInfo, profiler_ticks, kProfilerTicksOffset)
 
 #else
 
-#define PSEUDO_SMI_ACCESSORS_LO(holder, name, offset)             \
-  STATIC_ASSERT(holder::offset % kPointerSize == 0);              \
-  int holder::name() const {                                      \
-    int value = READ_INT_FIELD(this, offset);                     \
-    DCHECK(kHeapObjectTag == 1);                                  \
-    DCHECK((value & kHeapObjectTag) == 0);                        \
-    return value >> 1;                                            \
-  }                                                               \
-  void holder::set_##name(int value) {                            \
-    DCHECK(kHeapObjectTag == 1);                                  \
-    DCHECK((value & 0xC0000000) == 0xC0000000 ||                  \
-           (value & 0xC0000000) == 0x0);                          \
-    WRITE_INT_FIELD(this,                                         \
-                    offset,                                       \
-                    (value << 1) & ~kHeapObjectTag);              \
-  }
-
-#define PSEUDO_SMI_ACCESSORS_HI(holder, name, offset)             \
-  STATIC_ASSERT(holder::offset % kPointerSize == kIntSize);       \
+#if V8_TARGET_LITTLE_ENDIAN
+#define PSEUDO_SMI_LO_ALIGN 0
+#define PSEUDO_SMI_HI_ALIGN kIntSize
+#else
+#define PSEUDO_SMI_LO_ALIGN kIntSize
+#define PSEUDO_SMI_HI_ALIGN 0
+#endif
+
+#define PSEUDO_SMI_ACCESSORS_LO(holder, name, offset)                          \
+  STATIC_ASSERT(holder::offset % kPointerSize == PSEUDO_SMI_LO_ALIGN);         \
+  int holder::name() const {                                                   \
+    int value = READ_INT_FIELD(this, offset);                                  \
+    DCHECK(kHeapObjectTag == 1);                                               \
+    DCHECK((value & kHeapObjectTag) == 0);                                     \
+    return value >> 1;                                                         \
+  }                                                                            \
+  void holder::set_##name(int value) {                                         \
+    DCHECK(kHeapObjectTag == 1);                                               \
+    DCHECK((value & 0xC0000000) == 0xC0000000 || (value & 0xC0000000) == 0x0); \
+    WRITE_INT_FIELD(this, offset, (value << 1) & ~kHeapObjectTag);             \
+  }
+
+#define PSEUDO_SMI_ACCESSORS_HI(holder, name, offset)                  \
+  STATIC_ASSERT(holder::offset % kPointerSize == PSEUDO_SMI_HI_ALIGN); \
   INT_ACCESSORS(holder, name, offset)