Index: qtwebkit-opensource-src-5.2.0/Source/WTF/wtf/dtoa/utils.h
===================================================================
--- qtwebkit-opensource-src-5.2.0.orig/Source/WTF/wtf/dtoa/utils.h
+++ qtwebkit-opensource-src-5.2.0/Source/WTF/wtf/dtoa/utils.h
@@ -49,7 +49,7 @@
 defined(__ARMEL__) || \
 defined(_MIPS_ARCH_MIPS32R2)
 #define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
-#elif CPU(MIPS) || CPU(PPC) || CPU(PPC64) || OS(WINCE) || CPU(SH4) || CPU(S390) || CPU(S390X) || CPU(IA64) || CPU(SPARC) || CPU(ALPHA)
+#elif CPU(MIPS) || CPU(PPC) || CPU(PPC64) || OS(WINCE) || CPU(SH4) || CPU(S390) || CPU(S390X) || CPU(IA64) || CPU(SPARC) || CPU(ALPHA) || CPU(AARCH64)
 #define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
 #elif defined(_M_IX86) || defined(__i386__)
 #if defined(_WIN32)
Index: qtwebkit-opensource-src-5.2.0/Source/WTF/wtf/Platform.h
===================================================================
--- qtwebkit-opensource-src-5.2.0.orig/Source/WTF/wtf/Platform.h
+++ qtwebkit-opensource-src-5.2.0/Source/WTF/wtf/Platform.h
@@ -167,6 +167,11 @@
 #define WTF_CPU_X86_64 1
 #endif
 
+/* CPU(AARCH64) - AArch64 */
+#if defined(__aarch64__)
+#define WTF_CPU_AARCH64 1
+#endif
+
 /* CPU(ARM) - ARM, any version*/
 #define WTF_ARM_ARCH_AT_LEAST(N) (CPU(ARM) && WTF_ARM_ARCH_VERSION >= N)
 
@@ -322,7 +327,7 @@
 
 #endif /* ARM */
 
-#if CPU(ARM) || CPU(MIPS) || CPU(SH4) || CPU(SPARC)
+#if CPU(ARM) || CPU(MIPS) || CPU(SH4) || CPU(SPARC) || CPU(AARCH64)
 #define WTF_CPU_NEEDS_ALIGNED_ACCESS 1
 #endif
 
@@ -725,7 +730,8 @@
     || CPU(ALPHA) \
     || CPU(SPARC64) \
     || CPU(S390X) \
-    || CPU(PPC64)
+    || CPU(PPC64) \
+    || CPU(AARCH64)
 #define WTF_USE_JSVALUE64 1
 #else
 #define WTF_USE_JSVALUE32_64 1