- #if defined(__ARMEB__)
- #define CPU_BYTE_ORDER CPU_BIG_ENDIAN
- #elif defined(__ARMEL__)
- #define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
- #else
- #error Unable to detect Cortex-M3 endianess!
- #endif
+ #if defined( __ICCARM__)
+ #if ((defined __LITTLE_ENDIAN__) && (__LITTLE_ENDIAN__ == 0))
+ #define CPU_BYTE_ORDER CPU_BIG_ENDIAN
+ #elif ((defined __LITTLE_ENDIAN__) && (__LITTLE_ENDIAN__ == 1))
+ #define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
+ #else
+ #error Unable to detect Cortex-M3 endianess!
+ #endif
+
+ #define NOP __no_operation()
+ #else
+ #if defined(__ARMEB__) // GCC
+ #define CPU_BYTE_ORDER CPU_BIG_ENDIAN
+ #elif defined(__ARMEL__) // GCC
+ #define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
+ #else
+ #error Unable to detect Cortex-M3 endianess!
+ #endif