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-rw-r--r--riscv/decode.h6
1 files changed, 1 insertions, 5 deletions
diff --git a/riscv/decode.h b/riscv/decode.h
index 16b84da..7028c85 100644
--- a/riscv/decode.h
+++ b/riscv/decode.h
@@ -368,11 +368,7 @@ inline freg_t f128_negate(freg_t a)
#define validate_csr(which, write) ({ \
if (!STATE.serialized) return PC_SERIALIZE_BEFORE; \
STATE.serialized = false; \
- /* disallow writes to read-only CSRs */ \
- unsigned csr_read_only = get_field((which), 0xC00) == 3; \
- if ((write) && csr_read_only) \
- throw trap_illegal_instruction(insn.bits()); \
- /* other permissions checks occur in get_csr */ \
+ /* permissions check occurs in get_csr */ \
(which); })
/* For debug only. This will fail if the native machine's float types are not IEEE */