FEAT_NV requires that when HCR_EL2.{NV,NV1} == {1,0} and an exception
is taken from EL1 to EL1 then the reported EL in SPSR_EL1.M should be
EL2, not EL1. Implement this behaviour.
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Tested-by: Miguel Luis <miguel.l...@oracle.com>
---
target/arm/helper.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 7c7f92c16de..e48b03ba1d0 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -11249,6 +11249,12 @@ static void arm_cpu_do_interrupt_aarch64(CPUState *cs)
old_mode = pstate_read(env);
aarch64_save_sp(env, arm_current_el(env));
env->elr_el[new_el] = env->pc;
+
+ if (cur_el == 1 && new_el == 1 &&
+ ((arm_hcr_el2_eff(env) & (HCR_NV | HCR_NV1)) == HCR_NV)) {
+ /* I_ZJRNN: report EL2 in the SPSR by setting M[3:2] to 0b10 */
+ old_mode = deposit32(old_mode, 2, 2, 2);
+ }
} else {
old_mode = cpsr_read_for_spsr_elx(env);
env->elr_el[new_el] = env->regs[15];
--
2.34.1
