csr: add some forbidden CSRs manually

04879960 · wangkaifan · 28de64b1 · 04879960
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src/isa/riscv64/exec/system.h src/isa/riscv64/exec/system.h +2 -0

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--- a/src/isa/riscv64/exec/system.h
+++ b/src/isa/riscv64/exec/system.h
@@ -4,6 +4,8 @@
 static inline bool csr_check(DecodeExecState *s, uint32_t addr) {
  switch (addr) {
    case 0xc01:  // time
+    case 0x3b4:
+    case 0xb03:
      raise_intr(s, EX_II, cpu.pc);
      return false;
  }