Re: [PATCH v5 42/48] target/nios2: Implement rdprs, wrprs

[Richard Henderson]

On 3/15/22 09:26, Amir Gonnen wrote:
> Something is wrong when translating rdprs in an interrupt handler when CRS is 
> 0x1.
> I'm hitting "../tcg/tcg.c:3466: tcg_reg_alloc_mov: Assertion `ts->val_type == 
> TEMP_VAL_REG' failed."
>
> When stopped on that assertion I can see that :
> - ts->val_type  = TEMP_VAL_DEAD
> - op->opc = INDEX_op_mov_i32
> - ots->name = "pc"
> - cpu->ctrl[0] = 0x5f9 (that's STATUS so CRS = 1)
> - pc = 0xa2d5c
>
> so, it looks related to an assignment to PC a little after rdprs.

Ok, thanks for the report.  Yes, it's a bug in the indirection lowering.


r~