diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def
index 9859b3b701..2e09838ba8 100644
--- a/target-s390x/insn-data.def
+++ b/target-s390x/insn-data.def
@@ -279,6 +279,9 @@
     C(0xeb04, LMG,     RSY_a, Z,   0, a2, 0, 0, lm64, 0)
 /* LOAD MULTIPLE HIGH */
     C(0xeb96, LMH,     RSY_a, Z,   0, a2, 0, 0, lmh, 0)
+/* LOAD ACCESS MULTIPLE */
+    C(0x9a00, LAM,     RS_a,  Z,   0, a2, 0, 0, lam, 0)
+    C(0xeb9a, LAMY,    RSY_a, LD,  0, a2, 0, 0, lam, 0)
 
 /* MOVE */
     C(0xe544, MVHHI,   SIL,   GIE, la1, i2, 0, m1_16, mov2, 0)
@@ -389,6 +392,9 @@
     D(0xeb24, STMG,    RSY_a, Z,   0, a2, 0, 0, stm, 0, 8)
 /* STORE MULTIPLE HIGH */
     C(0xeb26, STMH,    RSY_a, Z,   0, a2, 0, 0, stmh, 0)
+/* STORE ACCESS MULTIPLE */
+    C(0x9b00, STAM,    RS_a,  Z,   0, a2, 0, 0, stam, 0)
+    C(0xeb9b, STAMY,   RSY_a, LD,  0, a2, 0, 0, stam, 0)
 
 /* SUBTRACT */
     C(0x1b00, SR,      RR_a,  Z,   r1, r2, new, r1_32, sub, subs32)
diff --git a/target-s390x/translate.c b/target-s390x/translate.c
index 8425c51be2..b2a258f5ce 100644
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -2233,30 +2233,6 @@ static void disas_s390_insn(CPUS390XState *env, DisasContext *s)
     LOG_DISAS("opc 0x%x\n", opc);
 
     switch (opc) {
-    case 0x9a: /* LAM      R1,R3,D2(B2)     [RS] */
-        insn = ld_code4(env, s->pc);
-        decode_rs(s, insn, &r1, &r3, &b2, &d2);
-        tmp = get_address(s, 0, b2, d2);
-        tmp32_1 = tcg_const_i32(r1);
-        tmp32_2 = tcg_const_i32(r3);
-        potential_page_fault(s);
-        gen_helper_lam(cpu_env, tmp32_1, tmp, tmp32_2);
-        tcg_temp_free_i64(tmp);
-        tcg_temp_free_i32(tmp32_1);
-        tcg_temp_free_i32(tmp32_2);
-        break;
-    case 0x9b: /* STAM     R1,R3,D2(B2)     [RS] */
-        insn = ld_code4(env, s->pc);
-        decode_rs(s, insn, &r1, &r3, &b2, &d2);
-        tmp = get_address(s, 0, b2, d2);
-        tmp32_1 = tcg_const_i32(r1);
-        tmp32_2 = tcg_const_i32(r3);
-        potential_page_fault(s);
-        gen_helper_stam(cpu_env, tmp32_1, tmp, tmp32_2);
-        tcg_temp_free_i64(tmp);
-        tcg_temp_free_i32(tmp32_1);
-        tcg_temp_free_i32(tmp32_2);
-        break;
     case 0xa8: /* MVCLE   R1,R3,D2(B2)     [RS] */
         insn = ld_code4(env, s->pc);
         decode_rs(s, insn, &r1, &r3, &b2, &d2);
@@ -3265,6 +3241,17 @@ static ExitStatus op_lpsw(DisasContext *s, DisasOps *o)
 }
 #endif
 
+static ExitStatus op_lam(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_lam(cpu_env, r1, o->in2, r3);
+    tcg_temp_free_i32(r1);
+    tcg_temp_free_i32(r3);
+    return NO_EXIT;
+}
+
 static ExitStatus op_lm32(DisasContext *s, DisasOps *o)
 {
     int r1 = get_field(s->fields, r1);
@@ -3518,6 +3505,17 @@ static ExitStatus op_st64(DisasContext *s, DisasOps *o)
     return NO_EXIT;
 }
 
+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);
+    return NO_EXIT;
+}
+
 static ExitStatus op_stm(DisasContext *s, DisasOps *o)
 {
     int r1 = get_field(s->fields, r1);