On 11/27/2014 10:38 AM, Thomas Stüfe wrote: > Hi Andrew, thank you! Does endianess matter ? Yes. I'd do it symbolically rather than mess with endian defines: #ifdef AARCH64 unsigned insn; asm("b 1f; 0: dcps1; 1: ldr %0, 0b" : "=r"(insn)); #endif Andrew.