1 

     2 diff --git a/js/src/assembler/wtf/Platform.h b/js/src/assembler/wtf/Platform.h

     3 --- a/js/src/assembler/wtf/Platform.h

     4 +++ b/js/src/assembler/wtf/Platform.h

     5 @@ -205,16 +205,23 @@

     6  #endif

     7  

     8  /* WTF_CPU_S390 - S390 32-bit */

     9  #if defined(__s390__)

    10  #define WTF_CPU_S390 1

    11  #define WTF_CPU_BIG_ENDIAN 1

    12  #endif

    13  

    14 +#if defined(__aarch64__)

    15 +#define WTF_CPU_AARCH64 1

    16 +#if defined(__AARCH64EB__)

    17 +#define WTF_CPU_BIG_ENDIAN 1

    18 +#endif

    19 +#endif

    20 +

    21  /* WTF_CPU_X86 - i386 / x86 32-bit */

    22  #if   defined(__i386__) \

    23      || defined(i386)     \

    24      || defined(_M_IX86)  \

    25      || defined(_X86_)    \

    26      || defined(__THW_INTEL)

    27  #define WTF_CPU_X86 1

    28  #endif

    29 

    30 

    31 

    32