Hello,

I’m new to ARM architecture and was looking to get a better understanding of how it works. Most notably, the Cortex-A series and its DSP functionality.

When reading through ARM’s webpage, it often refers to “NEON-Advanced SIMD”, “NEON”, and…

Hi,

      I am using beaglebone which has the processor TI Sitara AM335X. I want to make use of Neon coprcessor for my project, To enable neon, I have to follow these commands. But I can't access these registers ( especially FPEXC…

Hi, experts

I'm developing Secure OS on A57/53 bit.LITTLE SoC. But as you know.. Cuz i'm really beginner..

I beg your wisdom...

Current situation is :

• For making a TA. Bring the related data from REE and Mapping TEE side's NON-SECURE memory. (Data…

Hi Experts,

I'm reading white paper for ARMv7 and ARMv8.

but when i reading cache part and memory re-ordering, i have silly questions.....

Suppose there are below instructions..

Core A:

     STR R0, [Msg]

     STR R1, [Something…

I'm seeing Cortex-A7 cycle-timing table here :

http://hardwarebug.org/2014/05/15/cortex-a7-instruction-cycle-timings/

For example, 

VADD.F32 Dd, Dn, Dm takes 2 cycles

VADD.F32 Qd, Qn, Qm takes 4 cycles

same goes for VMUL..

Is this really the case…

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for matrix 4 by 4 multiplication, neon programming is slower than natural code with

auto-vectorization option. (Xilinx Zynq 702 EVM board - cortex a9 with gcc complier option

-mfloat-abi=softfp -mfpu=neon-fp16 -ftree…

Hello,

where can I get documentation for the AARCH64 and NEON64 assembly syntax for armclang (internal assembler)

I have some issues when compiling my GNU assembly code with armclang.

For example, the instruction:

MOV v0.2d[0], x4

reports "error: invalid…

Hi Experts,

A8 is meant for single core and A9 is for multi-core based.

Consider in case of SoC is build with single core of A9 and A8 how we could compare both in terms of some metrics/parameters like power/speed ?

hi i am trying to understand ARM NEON instruction and encountered with vqrdmulh instruction.

i am particularly interested in saturation case in instruction i am not getting any case with saturation .

Can any one explain me with an example

for example:

vqrdmulh…

Hi,

I would like to ask which version of gcc and with what flags , may I compile some c code to assembly code that uses arm neon coprocessor for ARMV7-A processor. Of course I want to use the processor itself but also the coprocessor. Is this gcc optimal…