feat(Zawrs): support Zawrs extension #786
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Anzooooo
approved these changes
Jan 21, 2025
Tang-Haojin
added a commit
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Jan 21, 2025
* NEMU commit: ca3a86992d84a80130a2cfa2c3ada23011df90ac
* NEMU configs:
* riscv64-xs-ref_defconfig
* riscv64-dual-xs-ref_defconfig
* riscv64-xs-ref-debug_defconfig
* riscv64-dual-xs-ref-debug_defconfig
Including:
* feat(cbo): supports cbo instr exception check
* feat(Zawrs): support Zawrs extension (OpenXiangShan/NEMU#786)
---
* spike commit: a04760733715f708b1053725443cd96319e66cf6
* spike config: CPU=XIANGSHAN, CPU=NUTSHELL
* ubuntu 20.04 clang
Including:
* fix(blocksz): init cache block size when init DifftestRef (OpenXiangShan/riscv-isa-sim#83)
* feat(Zawrs): support Zawrs extension (OpenXiangShan/riscv-isa-sim#84)
* fix(vsatp): fix vsatp.ppn value when write vsatp (OpenXiangShan/riscv-isa-sim#85)
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This commit implements a basic nop-based Zawrs extension.
wrs.stoin this commit acts as a nop instruction.wrs.ntoin this commit acts as a nop instruction, except it:Seems that completely raises no exception is also a valid implementation,
but raises an exception can help OS to do scheduling during waiting.