diff --git a/target-sparc/helper.h b/target-sparc/helper.h
index adef1f292e..9320bc813d 100644
--- a/target-sparc/helper.h
+++ b/target-sparc/helper.h
@@ -44,7 +44,6 @@ DEF_HELPER(void, helper_restore, (void))
 DEF_HELPER(void, helper_flush, (target_ulong addr))
 DEF_HELPER(target_ulong, helper_udiv, (target_ulong a, target_ulong b))
 DEF_HELPER(target_ulong, helper_sdiv, (target_ulong a, target_ulong b))
-DEF_HELPER(uint64_t, helper_pack64, (target_ulong high, target_ulong low))
 DEF_HELPER(void, helper_stdf, (target_ulong addr, int mem_idx))
 DEF_HELPER(void, helper_lddf, (target_ulong addr, int mem_idx))
 DEF_HELPER(void, helper_ldqf, (target_ulong addr, int mem_idx))
diff --git a/target-sparc/op_helper.c b/target-sparc/op_helper.c
index 7bbe0c6f0d..cf15cd342d 100644
--- a/target-sparc/op_helper.c
+++ b/target-sparc/op_helper.c
@@ -2281,11 +2281,6 @@ target_ulong helper_sdiv(target_ulong a, target_ulong b)
     }
 }
 
-uint64_t helper_pack64(target_ulong high, target_ulong low)
-{
-    return ((uint64_t)high << 32) | (uint64_t)(low & 0xffffffff);
-}
-
 void helper_stdf(target_ulong addr, int mem_idx)
 {
     helper_check_align(addr, 7);
diff --git a/target-sparc/translate.c b/target-sparc/translate.c
index fa34d27133..be00054ae2 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -1715,13 +1715,14 @@ static inline void gen_ldda_asi(TCGv hi, TCGv addr, int insn, int rd)
 
 static inline void gen_stda_asi(TCGv hi, TCGv addr, int insn, int rd)
 {
-    TCGv r_temp, r_asi, r_size;
+    TCGv r_low, r_asi, r_size;
 
-    r_temp = tcg_temp_new(TCG_TYPE_TL);
-    gen_movl_reg_TN(rd + 1, r_temp);
-    tcg_gen_helper_1_2(helper_pack64, cpu_tmp64, hi,
-                       r_temp);
-    tcg_temp_free(r_temp);
+    gen_movl_reg_TN(rd + 1, cpu_tmp0);
+    r_low = tcg_temp_new(TCG_TYPE_I32);
+    tcg_gen_trunc_tl_i32(r_low, cpu_tmp0);
+    tcg_gen_trunc_tl_i32(cpu_tmp32, hi);
+    tcg_gen_concat_i32_i64(cpu_tmp64, r_low, cpu_tmp32);
+    tcg_temp_free(r_low);
     r_asi = gen_get_asi(insn, addr);
     r_size = tcg_const_i32(8);
     tcg_gen_helper_0_4(helper_st_asi, addr, cpu_tmp64, r_asi, r_size);
@@ -1817,12 +1818,14 @@ static inline void gen_ldda_asi(TCGv hi, TCGv addr, int insn, int rd)
 
 static inline void gen_stda_asi(TCGv hi, TCGv addr, int insn, int rd)
 {
-    TCGv r_temp, r_asi, r_size;
+    TCGv r_low, r_asi, r_size;
 
-    r_temp = tcg_temp_new(TCG_TYPE_TL);
-    gen_movl_reg_TN(rd + 1, r_temp);
-    tcg_gen_helper_1_2(helper_pack64, cpu_tmp64, hi, r_temp);
-    tcg_temp_free(r_temp);
+    gen_movl_reg_TN(rd + 1, cpu_tmp0);
+    r_low = tcg_temp_new(TCG_TYPE_I32);
+    tcg_gen_trunc_tl_i32(r_low, cpu_tmp0);
+    tcg_gen_trunc_tl_i32(cpu_tmp32, hi);
+    tcg_gen_concat_i32_i64(cpu_tmp64, r_low, cpu_tmp32);
+    tcg_temp_free(r_low);
     r_asi = tcg_const_i32(GET_FIELD(insn, 19, 26));
     r_size = tcg_const_i32(8);
     tcg_gen_helper_0_4(helper_st_asi, addr, cpu_tmp64, r_asi, r_size);
@@ -4482,10 +4485,11 @@ static void disas_sparc_insn(DisasContext * dc)
                         tcg_gen_helper_0_2(helper_check_align, cpu_addr,
                                            r_const); // XXX remove
                         tcg_temp_free(r_const);
-                        r_low = tcg_temp_new(TCG_TYPE_TL);
-                        gen_movl_reg_TN(rd + 1, r_low);
-                        tcg_gen_helper_1_2(helper_pack64, cpu_tmp64, cpu_val,
-                                           r_low);
+                        gen_movl_reg_TN(rd + 1, cpu_tmp0);
+                        r_low = tcg_temp_new(TCG_TYPE_I32);
+                        tcg_gen_trunc_tl_i32(r_low, cpu_tmp0);
+                        tcg_gen_trunc_tl_i32(cpu_tmp32, cpu_val);
+                        tcg_gen_concat_i32_i64(cpu_tmp64, r_low, cpu_tmp32);
                         tcg_temp_free(r_low);
                         tcg_gen_qemu_st64(cpu_tmp64, cpu_addr, dc->mem_idx);
                     }