S390: Platform specific includes in common files

src/utils.h

Index: src/utils.h
diff --git a/src/utils.h b/src/utils.h
index 1dd007a06b3ff986ff9b493f11d05e951ca266ad..a09f1778631dae6abf9acac5369c981d189a79c7 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -1144,7 +1144,7 @@ INLINE(void CopyCharsUnsigned(uint16_t* dest, const uint16_t* src,
 INLINE(void CopyCharsUnsigned(uint8_t* dest, const uint8_t* src, size_t chars));
 INLINE(void CopyCharsUnsigned(uint16_t* dest, const uint16_t* src,
                               size_t chars));
-#elif defined(V8_HOST_ARCH_PPC)
+#elif defined(V8_HOST_ARCH_PPC) || defined(V8_HOST_ARCH_S390)
 INLINE(void CopyCharsUnsigned(uint8_t* dest, const uint8_t* src, size_t chars));
 INLINE(void CopyCharsUnsigned(uint16_t* dest, const uint16_t* src,
                               size_t chars));
@@ -1307,7 +1307,7 @@ void CopyCharsUnsigned(uint16_t* dest, const uint16_t* src, size_t chars) {
     MemCopy(dest, src, chars * sizeof(*dest));
   }
 }
-#elif defined(V8_HOST_ARCH_PPC)
+#elif defined(V8_HOST_ARCH_PPC) || defined(V8_HOST_ARCH_S390)
 #define CASE(n)           \
   case n:                 \
     memcpy(dest, src, n); \