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write-only register read() via backdoor failure

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One of register test requirements is that the write-only register written with a new value in advance can be read back correctly via the back-door interface anyway. It is to prove the correctness of write to the write-only register via front-door.

The uvm_reg doesn't support this because it will do the pre_read check using uvm_reg_write_only_cbs class before the true backdoor operation is done. The read is then returned with UVM_NOT_OK and failed eventually.

Suppose the test requirement makes sense here, what could I work-around this? Seem the uvm_reg should be updated to distinguish the backdoor and frontdoor way of read from write-only register.

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