target/s390x: Use unwind data for helper_stam

Reviewed-by: NThomas Huth <thuth@redhat.com>
Reviewed-by: NAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

target/s390x/mem_helper.c

@@ -485,10 +485,11 @@ void HELPER(lam)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
 /* store access registers r1 to r3 in memory at a2 */
 void HELPER(stam)(CPUS390XState *env, uint32_t r1, uint64_t a2, uint32_t r3)
 {
+    uintptr_t ra = GETPC();
     int i;
 
     for (i = r1;; i = (i + 1) % 16) {
-        cpu_stl_data(env, a2, env->aregs[i]);
+        cpu_stl_data_ra(env, a2, env->aregs[i], ra);
         a2 += 4;
 
         if (i == r3) {

target/s390x/translate.c

@@ -3867,7 +3867,6 @@ static ExitStatus op_stam(DisasContext *s, DisasOps *o)
 {
     TCGv_i32 r1 = tcg_const_i32(get_field(s->fields, r1));
     TCGv_i32 r3 = tcg_const_i32(get_field(s->fields, r3));
-    potential_page_fault(s);
     gen_helper_stam(cpu_env, r1, o->in2, r3);
     tcg_temp_free_i32(r1);
     tcg_temp_free_i32(r3);