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Asked: 2017-06-23 13:23:23 +0800 CST

Is armv7l 32 or 64 bit?

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I am running a Odroid with Ubuntu Mate. I need to download qt and so I need to know if I should get the 32 or 64 bit version of qt. 

odroid@odroid:~/software/qt5$ uname -i
armv7l

uname -i returns armv7l. Does that mean I should download the 32 or 64 bit of qt?

arm

2 Answers

  1. armv7l is 32 bit processor.

    If you need a little bit more information regarding ARMv8, please read @Rinzwind's answer :-)

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  2. ARMv8 is 64-bit. With 32-bit compatibility.

    The ARMv8 architecture introduces 64-bit support to the ARM architecture with a focus on power-efficient implementation while maintaining compatibility with existing 32-bit software. By adopting a clean approach ARMv8-A processors extend the performance range available while maintaining the low power consumption characteristics of the ARM processors that will power tomorrow's most innovative and efficient devices. ARM has 3 different product tiers supporting the ARMv8-A architecture: High Performance, High Efficiency, and Ultra-High Efficiency.

    ARMv8-A introduces 64-bit architecture support to the ARM architecture and includes:

    • 64-bit general purpose registers, SP (stack pointer) and PC (program counter)
    • 64-bit data processing and extended virtual addressing

    Two main execution states:

    • AArch64 - The 64-bit execution state including exception model, memory -model, programmers' model and instruction set support for that state
    • AArch32 - The 32-bit execution state including exception model, memory model, programmers' model and instruction set support for that state

    Anything lower (like ARMv7) is 32-bit.

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