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  • How to do the ARM state change between 64-bit and 32-bit?

    Hi,

    The latest 64-bit architecture can on both AArch64 and AArch32 state.

    Can someone tell me how to utilize this feature so that I can seamlessly integrate algorithms (which are optimized with 32-bit and 64-bit instructions) with applications which are…

  • Why does FPU performance differ in AArch64 and AArch32 with Cortex-A53?

    Hello experts,


    I have come to having a question.
    VFP Benchmark is a benchmark application which was made by a certain Japanese in order to measure ARM VFP performance especially for ARMv7-A and ARMv8-A.
    The software can be downloaded from the following link…

  • indicator for A core system timer implemented or not

    Hi ARM expert,

        In ARM V7 RM, I saw "This chapter describes the implementation of the ARM Generic Timer as an OPTIONAL extension to an ARMv7-A or ARMv7-R processor implementation.". So, I think it means that a SoC implementation…

  • Confusion about exception level of ARMv8

    Hi,

    I am fairly new to ARM processor and start work with cortexA57 recently.  After reading the technical manual and programmer guide , I have some questions regarding the exception level of v8.

    1. How does the exception level change from one to…

  • Armv8-A architecture: 2016 additions

    The Armv8-A architecture continues to evolve, with the additions developed through 2016 collectively known as Armv8.3-A. Grouping enhancements in this manner helps the ecosystem manage tools and software support alongside the large numbers of Armv8-A…

  • Is it possible to implement EL3 AArch64 and change it later to EL3 AArch32?

    I was reading the ARM architecture reference manual... and thought

    Is it possible to implement EL3 AArch64 and change it later to EL3 AArch32?

    How to change is...

    If I start on cold reset, it will start at EL3 AArch64.

    Right after the cold reset, I set the…