[Qemu-devel] [PATCH v4 16/21] target-arm: A64: Trap ERET from EL0 at translation time

[Edgar E. Iglesias]

From: "Edgar E. Iglesias" <address@hidden>

Suggested-by: Peter Maydell <address@hidden>
Signed-off-by: Edgar E. Iglesias <address@hidden>
---
 target-arm/translate-a64.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
index bfd139a..ec6a39d 100644
--- a/target-arm/translate-a64.c
+++ b/target-arm/translate-a64.c
@@ -1507,6 +1507,10 @@ static void disas_uncond_b_reg(DisasContext *s, uint32_t 
insn)
         tcg_gen_movi_i64(cpu_reg(s, 30), s->pc);
         break;
     case 4: /* ERET */
+        if (s->current_pl == 0) {
+            unallocated_encoding(s);
+            return;
+        }
         gen_helper_exception_return(cpu_env);
         s->is_jmp = DISAS_JUMP;
         return;
-- 
1.8.3.2