riscv: reject scalar M instructions without the M extension - #39
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carlosqwqqwq wants to merge 1 commit into
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riscv: reject scalar M instructions without the M extension#39carlosqwqqwq wants to merge 1 commit into
carlosqwqqwq wants to merge 1 commit into
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This was referenced Sep 7, 2026
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Summary
The ordinary OP/OP-W M translator family does not enforce the
Mextension gate. Add the gate before lowering the family, without changing legal M-enabled execution or the separate compressed Zcb checks.Validation
MULwitness after the fix; M-enabled QEMU and native controls remain legal.Fixes renode/renode#961
Public reproduction and integration
The corresponding public Robot reproduction is available at
https://github.com/carlosqwqqwq/renode-issue-reproduction-template/tree/main.
The focused change is also included in the combined integration branch in
tlib #44, followed by
renode-infrastructure #245
and Renode #989.