[PATCH 002/120] MIPS: R5900: Trap the RDHWR instruction as an SQ address exception

[Maciej W. Rozycki]

On Thu, 19 Nov 2020, Maciej W. Rozycki wrote:

>  Consequently an AdES exception is triggered which we can trap and handle, 
> reinterpreting the encoding according to our needs and return the TLS 
> pointer in $v1 rather than issuing a SIGBUS.

 ... while keeping regular SQ instruction use intact, I should have added.

  Maciej