1 files changed, 4 insertions, 0 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 4cc4369255..33c7e2f48e 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -6738,6 +6738,10 @@ void HELPER(v7m_blxns)(CPUARMState *env, uint32_t dest)
                       "BLXNS with misaligned SP is UNPREDICTABLE\n");
     }
 
+    if (sp < v7m_sp_limit(env)) {
+        raise_exception(env, EXCP_STKOF, 0, 1);
+    }
+
     saved_psr = env->v7m.exception;
     if (env->v7m.control[M_REG_S] & R_V7M_CONTROL_SFPA_MASK) {
         saved_psr |= XPSR_SFPA;