1 files changed, 29 insertions, 0 deletions
diff --git a/target/nios2/op_helper.c b/target/nios2/op_helper.c
index 49fccf2c2c..a19b504b0e 100644
--- a/target/nios2/op_helper.c
+++ b/target/nios2/op_helper.c
@@ -31,6 +31,35 @@ void helper_raise_exception(CPUNios2State *env, uint32_t index)
     cpu_loop_exit(cs);
 }
 
+static void maybe_raise_div(CPUNios2State *env, uintptr_t ra)
+{
+    Nios2CPU *cpu = env_archcpu(env);
+    CPUState *cs = env_cpu(env);
+
+    if (cpu->diverr_present) {
+        cs->exception_index = EXCP_DIV;
+        cpu_loop_exit_restore(cs, ra);
+    }
+}
+
+int32_t helper_divs(CPUNios2State *env, int32_t num, int32_t den)
+{
+    if (unlikely(den == 0) || unlikely(den == -1 && num == INT32_MIN)) {
+        maybe_raise_div(env, GETPC());
+        return num; /* undefined */
+    }
+    return num / den;
+}
+
+uint32_t helper_divu(CPUNios2State *env, uint32_t num, uint32_t den)
+{
+    if (unlikely(den == 0)) {
+        maybe_raise_div(env, GETPC());
+        return num; /* undefined */
+    }
+    return num / den;
+}
+
 #ifndef CONFIG_USER_ONLY
 void helper_eret(CPUNios2State *env, uint32_t new_status, uint32_t new_pc)
 {