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| author | Peter Maydell <peter.maydell@linaro.org> | 2024-01-09 14:43:49 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2024-01-09 14:43:49 +0000 |
| commit | 29eda9cd1987d69b089ed5413c8e39aecd618e17 (patch) | |
| tree | f3f066163cfb19a13b12ecbf5d7fcfcc282a7cda /target/arm/helper.c | |
| parent | b7ecc3da6c87f8a57805acfc46922684f8a26eea (diff) | |
| download | focaccia-qemu-29eda9cd1987d69b089ed5413c8e39aecd618e17.tar.gz focaccia-qemu-29eda9cd1987d69b089ed5413c8e39aecd618e17.zip | |
target/arm: Set SPSR_EL1.M correctly when nested virt is enabled
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.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Miguel Luis <miguel.luis@oracle.com>
Diffstat (limited to 'target/arm/helper.c')
| -rw-r--r-- | target/arm/helper.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index 7c7f92c16d..e48b03ba1d 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]; |