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Zicsr, Zifenci Makefiles assume RV32I v2.0, not forward compatible with v2.1 #6

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jenniferhellar opened this issue Aug 9, 2023 · 0 comments
Open

Zicsr, Zifenci Makefiles assume RV32I v2.0, not forward compatible with v2.1 #6

jenniferhellar opened this issue Aug 9, 2023 · 0 comments

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@jenniferhellar
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The ISA spec v2.1 split the csr and fence instructions into separate extensions. Recent toolchain versions assume rv32i is v2.1 compliant (does not include the csr and fence), so as-is the Zicsr and Zifenci makefiles generate errors on the '-march=rv32i' option passed.

Recommend updating Makefiles to '-march=rv32i2p0'
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@jenniferhellar