How-to add custom errata workaround to the assembler?

[Sebastian Huber]

Hello,

I have a system on a chip with an Armv8-R core (Cortex-R52) which needs an additional load after each load exclusive instruction (ldrex, ...) as a hardware errata workaround. I would like to add a custom assembler option to enable this workaround and then emit for each load exclusive instruction which gets assembled an additional load instruction. It would be great if someone could give me a hint if this sounds feasible and ideally which function or file in binutils could be changed to to do this work.

Kind regards,
   Sebastian

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