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Why does Cortex-R kernel only support Thumb-2?

Kun.Niu

Why does Cortex-R kernel only support Thumb-2?

Is this attribute has some advantages to the real-time response time?

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  • 0 Arm Employee Badge

    Hi laoniu_c,

    Where did you see that statement? Cortex-R cores support the same ARM (32-bit opcodes) and Thumb (mixed 16- and 32-bit opcodes) instruction sets as Cortex-A cores. The instruction set (or opcode width) being executed at any time has absolutely no bearing on determinism.

    Ta,

    Matt

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  • 0 Arm Employee Badge

    Hi laoniu_c,

    Where did you see that statement? Cortex-R cores support the same ARM (32-bit opcodes) and Thumb (mixed 16- and 32-bit opcodes) instruction sets as Cortex-A cores. The instruction set (or opcode width) being executed at any time has absolutely no bearing on determinism.

    Ta,

    Matt

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