avx512 vnni support

Prasun Ratn

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Mar 30, 2022, 11:51:46 AM3/30/22

to DynamoRIO Users

I am seeing a SIGILL failure due to an avx512 vnni instruction (vpdpbusd). I assume avx512 vnni instructions are not supported yet?

What would be needed to enable this instruction set? Some updates to decode_table (+tests) ? Or more changes?

Thanks

Prasun

Derek Bruening

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Mar 30, 2022, 12:31:01 PM3/30/22

to Prasun Ratn, DynamoRIO Users

I thought all avx512 opcodes were supported? https://github.com/DynamoRIO/dynamorio/issues/1312#issuecomment-555743228 lists only a few OS-specific missing pieces.

For adding new x86 opcodes see the list of places to update at https://github.com/DynamoRIO/dynamorio/blob/master/core/ir/x86/opcode_api.h#L53

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Prasun Ratn

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Mar 30, 2022, 1:10:43 PM3/30/22

to Derek Bruening, DynamoRIO Users

Is there a test that checks for this instruction? How do I add one if there isn't one?

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