diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h
index 88fb4f1d17..db2e10610d 100644
--- a/include/tcg/tcg.h
+++ b/include/tcg/tcg.h
@@ -701,6 +701,11 @@ static inline TCGTemp *tcgv_i64_temp(TCGv_i64 v)
     return tcgv_i32_temp((TCGv_i32)v);
 }
 
+static inline TCGTemp *tcgv_i128_temp(TCGv_i128 v)
+{
+    return tcgv_i32_temp((TCGv_i32)v);
+}
+
 static inline TCGTemp *tcgv_ptr_temp(TCGv_ptr v)
 {
     return tcgv_i32_temp((TCGv_i32)v);
@@ -721,6 +726,11 @@ static inline TCGArg tcgv_i64_arg(TCGv_i64 v)
     return temp_arg(tcgv_i64_temp(v));
 }
 
+static inline TCGArg tcgv_i128_arg(TCGv_i128 v)
+{
+    return temp_arg(tcgv_i128_temp(v));
+}
+
 static inline TCGArg tcgv_ptr_arg(TCGv_ptr v)
 {
     return temp_arg(tcgv_ptr_temp(v));
@@ -742,6 +752,11 @@ static inline TCGv_i64 temp_tcgv_i64(TCGTemp *t)
     return (TCGv_i64)temp_tcgv_i32(t);
 }
 
+static inline TCGv_i128 temp_tcgv_i128(TCGTemp *t)
+{
+    return (TCGv_i128)temp_tcgv_i32(t);
+}
+
 static inline TCGv_ptr temp_tcgv_ptr(TCGTemp *t)
 {
     return (TCGv_ptr)temp_tcgv_i32(t);
@@ -864,6 +879,11 @@ static inline void tcg_temp_free_i64(TCGv_i64 arg)
     tcg_temp_free_internal(tcgv_i64_temp(arg));
 }
 
+static inline void tcg_temp_free_i128(TCGv_i128 arg)
+{
+    tcg_temp_free_internal(tcgv_i128_temp(arg));
+}
+
 static inline void tcg_temp_free_ptr(TCGv_ptr arg)
 {
     tcg_temp_free_internal(tcgv_ptr_temp(arg));
@@ -912,6 +932,18 @@ static inline TCGv_i64 tcg_temp_local_new_i64(void)
     return temp_tcgv_i64(t);
 }
 
+static inline TCGv_i128 tcg_temp_new_i128(void)
+{
+    TCGTemp *t = tcg_temp_new_internal(TCG_TYPE_I128, false);
+    return temp_tcgv_i128(t);
+}
+
+static inline TCGv_i128 tcg_temp_local_new_i128(void)
+{
+    TCGTemp *t = tcg_temp_new_internal(TCG_TYPE_I128, true);
+    return temp_tcgv_i128(t);
+}
+
 static inline TCGv_ptr tcg_global_mem_new_ptr(TCGv_ptr reg, intptr_t offset,
                                               const char *name)
 {
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 7cde82f12d..adf592ac96 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -1250,18 +1250,39 @@ TCGTemp *tcg_temp_new_internal(TCGType type, bool temp_local)
         tcg_debug_assert(ts->base_type == type);
         tcg_debug_assert(ts->kind == kind);
     } else {
+        bool want_pair = false;
+        TCGType half = type;
+
+        switch (type) {
+        case TCG_TYPE_I32:
+        case TCG_TYPE_V64:
+        case TCG_TYPE_V128:
+        case TCG_TYPE_V256:
+            break;
+        case TCG_TYPE_I64:
+            half = TCG_TYPE_I32;
+            want_pair = TCG_TARGET_REG_BITS == 32;
+            break;
+        case TCG_TYPE_I128:
+            half = TCG_TYPE_I64;
+            want_pair = TCG_TARGET_REG_BITS == 64;
+            break;
+        default:
+            g_assert_not_reached();
+        }
+
         ts = tcg_temp_alloc(s);
-        if (TCG_TARGET_REG_BITS == 32 && type == TCG_TYPE_I64) {
+        if (want_pair) {
             TCGTemp *ts2 = tcg_temp_alloc(s);
 
             ts->base_type = type;
-            ts->type = TCG_TYPE_I32;
+            ts->type = half;
             ts->temp_allocated = 1;
             ts->kind = kind;
 
             tcg_debug_assert(ts2 == ts + 1);
-            ts2->base_type = TCG_TYPE_I64;
-            ts2->type = TCG_TYPE_I32;
+            ts2->base_type = type;
+            ts2->type = half;
             ts2->temp_allocated = 1;
             ts2->temp_subindex = 1;
             ts2->kind = kind;
@@ -2773,7 +2794,7 @@ static void la_cross_call(TCGContext *s, int nt)
 
     for (i = 0; i < nt; i++) {
         TCGTemp *ts = &s->temps[i];
-        if (!(ts->state & TS_DEAD)) {
+        if (ts->type != TCG_TYPE_I128 && !(ts->state & TS_DEAD)) {
             TCGRegSet *pset = la_temp_pref(ts);
             TCGRegSet set = *pset;
 
@@ -3404,6 +3425,7 @@ static void temp_allocate_frame(TCGContext *s, TCGTemp *ts)
     case TCG_TYPE_V64:
         align = 8;
         break;
+    case TCG_TYPE_I128:
     case TCG_TYPE_V128:
     case TCG_TYPE_V256:
         /* Note that we do not require aligned storage for V256. */
