diff options
| author | Alistair Francis | 2020-02-01 02:02:28 +0100 |
|---|---|---|
| committer | Palmer Dabbelt | 2020-02-27 22:45:41 +0100 |
| commit | 9d0d11269671646be7475cc01142e9d3ed8ae59c (patch) | |
| tree | 1698a50f1091168b673149feb4803472967b3a55 | |
| parent | target/ricsv: Flush the TLB on virtulisation mode changes (diff) | |
| download | qemu-9d0d11269671646be7475cc01142e9d3ed8ae59c.tar.gz qemu-9d0d11269671646be7475cc01142e9d3ed8ae59c.tar.xz qemu-9d0d11269671646be7475cc01142e9d3ed8ae59c.zip | |
target/riscv: Generate illegal instruction on WFI when V=1
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
| -rw-r--r-- | target/riscv/op_helper.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/target/riscv/op_helper.c b/target/riscv/op_helper.c index e87c9115bc..455eb28907 100644 --- a/target/riscv/op_helper.c +++ b/target/riscv/op_helper.c @@ -130,9 +130,10 @@ void helper_wfi(CPURISCVState *env) { CPUState *cs = env_cpu(env); - if (env->priv == PRV_S && + if ((env->priv == PRV_S && env->priv_ver >= PRIV_VERSION_1_10_0 && - get_field(env->mstatus, MSTATUS_TW)) { + get_field(env->mstatus, MSTATUS_TW)) || + riscv_cpu_virt_enabled(env)) { riscv_raise_exception(env, RISCV_EXCP_ILLEGAL_INST, GETPC()); } else { cs->halted = 1; |