diff options
Diffstat (limited to 'riscv/decode.h')
| -rw-r--r-- | riscv/decode.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/riscv/decode.h b/riscv/decode.h index 4ad4549..72efcd9 100644 --- a/riscv/decode.h +++ b/riscv/decode.h @@ -159,7 +159,11 @@ private: npc = sext_xlen(x); \ } while(0) +#define PC_SERIALIZE 3 /* sentinel value indicating simulator pipeline flush */ + #define validate_csr(which, write) ({ \ + if (!STATE.serialized) return PC_SERIALIZE; \ + STATE.serialized = false; \ unsigned my_priv = get_field(STATE.mstatus, MSTATUS_PRV); \ unsigned csr_priv = get_field((which), 0x300); \ unsigned csr_read_only = get_field((which), 0xC00) == 3; \ |