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ECALL and EBREAK increments minstret #16

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bnossum opened this issue Oct 21, 2020 · 1 comment
Open

ECALL and EBREAK increments minstret #16

bnossum opened this issue Oct 21, 2020 · 1 comment
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bnossum commented Oct 21, 2020

From Volume II: RISC-V Privileged Architectures V1.12-draft:
"As ECALL and EBREAK cause synchronous exceptions, they are not considered to retire, and should not increment the minstret CSR."
Midgetv do not special-case these instructions.
@bnossum bnossum self-assigned this Oct 21, 2020
@bnossum bnossum added the invalid This doesn't seem right label Oct 21, 2020
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bnossum commented Oct 21, 2020

This will probably not be fixed.

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