which instruction set shall I use for Cortex-a7

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which instruction set shall I use for Cortex-a7

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panli
Contributor II

Dear all,

We are using i.mx6ultralite processor module in our project. A yocto build system was used to build linux image. By setting ARM_INSTRUCTION_SET, I can decide which instruction set to be used during compilation.

But I have no idea which one of the two instruction sets (-mthumb or -marm) is better for the processor module.

Can you give me some suggestion?

best regards

Pan

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b36401
NXP TechSupport
NXP TechSupport

By default A-cores are running in "normal" instruction set not "thumb" one. So you need to use -marm option.

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