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How to access ARM system registers?
I want to retrieve processor features at runtime. I used 'MRS' instruction to access system registers. But it failed on my M1 MacBook. I tried the same code on Nvidia Orin(ARM ISA), it's works. On MacOS, I found only 'NZCV' system register I can access. Does Apple impose limitation on other system registers?
Topic: Developer Tools & Services SubTopic: General
1
0
503
Jul ’24
How to access ARM system registers?
I want to retrieve processor features at runtime. I used 'MRS' instruction to access system registers. But it failed on my M1 MacBook. I tried the same code on Nvidia Orin(ARM ISA), it's works. On MacOS, I found only 'NZCV' system register I can access. Does Apple impose limitation on other system registers?
Topic: Developer Tools & Services SubTopic: General
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1
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0
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503
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Jul ’24