Comments (2)
pdonahue-ventana
commented on August 12, 2024
You're right. The Spike code looks wrong. It seems like it should be something like ((value >> (xlen/2)) & mask) == (tdata2 & ((1<<(xlen/2))-1).
If I want to match when value[1:0]=3 then I need to program tdata2=0x0000000300000003 where [31:2] must be 0 according to the spec. If I have non-zero in [31:2] like 0x00000003DEADBEEF then the trigger cannot possibly match. The Spike bug was probably never caught because nobody programmed the trigger in this way that made it impossible to match.
from riscv-debug-spec.
micreven
commented on August 12, 2024
Got it.
Thanks a lot.
from riscv-debug-spec.
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