• Endianness vtbx
    Hi @ all, I have a 16 byte permutation mask uint8_t[16] and a 16 byte data array uint32_t[4]. I want to "shuffle" this data array using vtbx. This is my code so far: #include <arm_neon.h> #include...
  • No segmentation fault with unaligned access
    Hi all, It is a well known fact that performing an aligned vector load with an unaligned memory address should lead to segmentation fault. However, when I do try to run code segment below using the...
  • Unaligned access in stmfd instruction
    I am trying to understand the unaligned access in the arm instruction. I tried to store a register into an unaligned stack pointer using the instruction stmfd. I was expecting a segmentation fault but...
  • ARM_V8 which  instructions are not support in android platform compare to ios(xcode)
    Hi,actually my code is working properly on ios (xcode) but if i run the same code on android platform which is not working i don't know how to debug on android.so please could you suggest me that which...
  • Could arm-none-eabi-gcc split a LDRD(64bit load) from an unaligned address into two LDR?
    Hi, experts, When testing codes below on Cortex-M4F. It seems armcc(Keil) handles the unaligned memory access very well and the dword load is compiled into two LDR instructions. But gcc generates one...