[PULL 11/42] target/riscv: Fix 32-bit HS mode access permissions

[Alistair Francis]

Signed-off-by: Alistair Francis <alistair.fran...@wdc.com>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Reviewed-by: Bin Meng <bmeng...@gmail.com>
Message-id: 
cb1ef2061547dc9028ce3cf4f6622588f9c09149.1617290165.git.alistair.fran...@wdc.com
---
 target/riscv/csr.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 1938bdca7d..6a39c4aa96 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -181,7 +181,11 @@ static RISCVException hmode(CPURISCVState *env, int csrno)
 static RISCVException hmode32(CPURISCVState *env, int csrno)
 {
     if (!riscv_cpu_is_32bit(env)) {
-        return RISCV_EXCP_NONE;
+        if (riscv_cpu_virt_enabled(env)) {
+            return RISCV_EXCP_ILLEGAL_INST;
+        } else {
+            return RISCV_EXCP_VIRT_INSTRUCTION_FAULT;
+        }
     }
 
     return hmode(env, csrno);
-- 
2.31.1