diff --git a/target/sparc/helper.h b/target/sparc/helper.h
index 134e519a37..49ace89858 100644
--- a/target/sparc/helper.h
+++ b/target/sparc/helper.h
@@ -59,7 +59,7 @@ DEF_HELPER_FLAGS_3(faddd, TCG_CALL_NO_WG, f64, env, f64, f64)
 DEF_HELPER_FLAGS_3(fsubd, TCG_CALL_NO_WG, f64, env, f64, f64)
 DEF_HELPER_FLAGS_3(fmuld, TCG_CALL_NO_WG, f64, env, f64, f64)
 DEF_HELPER_FLAGS_3(fdivd, TCG_CALL_NO_WG, f64, env, f64, f64)
-DEF_HELPER_FLAGS_5(fmaddd, TCG_CALL_NO_WG, f64, env, f64, f64, f64, i32)
+DEF_HELPER_FLAGS_6(fmaddd, TCG_CALL_NO_WG, f64, env, f64, f64, f64, s32, i32)
 DEF_HELPER_FLAGS_3(fnaddd, TCG_CALL_NO_WG, f64, env, f64, f64)
 DEF_HELPER_FLAGS_3(fnmuld, TCG_CALL_NO_WG, f64, env, f64, f64)
 
@@ -72,7 +72,7 @@ DEF_HELPER_FLAGS_3(fadds, TCG_CALL_NO_WG, f32, env, f32, f32)
 DEF_HELPER_FLAGS_3(fsubs, TCG_CALL_NO_WG, f32, env, f32, f32)
 DEF_HELPER_FLAGS_3(fmuls, TCG_CALL_NO_WG, f32, env, f32, f32)
 DEF_HELPER_FLAGS_3(fdivs, TCG_CALL_NO_WG, f32, env, f32, f32)
-DEF_HELPER_FLAGS_5(fmadds, TCG_CALL_NO_WG, f32, env, f32, f32, f32, i32)
+DEF_HELPER_FLAGS_6(fmadds, TCG_CALL_NO_WG, f32, env, f32, f32, f32, s32, i32)
 DEF_HELPER_FLAGS_3(fnadds, TCG_CALL_NO_WG, f32, env, f32, f32)
 DEF_HELPER_FLAGS_3(fnmuls, TCG_CALL_NO_WG, f32, env, f32, f32)
 
diff --git a/target/sparc/fop_helper.c b/target/sparc/fop_helper.c
index 6f9ccc008a..f4af04f061 100644
--- a/target/sparc/fop_helper.c
+++ b/target/sparc/fop_helper.c
@@ -344,17 +344,17 @@ Int128 helper_fsqrtq(CPUSPARCState *env, Int128 src)
 }
 
 float32 helper_fmadds(CPUSPARCState *env, float32 s1,
-                      float32 s2, float32 s3, uint32_t op)
+                      float32 s2, float32 s3, int32_t sc, uint32_t op)
 {
-    float32 ret = float32_muladd(s1, s2, s3, op, &env->fp_status);
+    float32 ret = float32_muladd_scalbn(s1, s2, s3, sc, op, &env->fp_status);
     check_ieee_exceptions(env, GETPC());
     return ret;
 }
 
 float64 helper_fmaddd(CPUSPARCState *env, float64 s1,
-                      float64 s2, float64 s3, uint32_t op)
+                      float64 s2, float64 s3, int32_t sc, uint32_t op)
 {
-    float64 ret = float64_muladd(s1, s2, s3, op, &env->fp_status);
+    float64 ret = float64_muladd_scalbn(s1, s2, s3, sc, op, &env->fp_status);
     check_ieee_exceptions(env, GETPC());
     return ret;
 }
diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index cdd0a95c03..005efb13f1 100644
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -1364,93 +1364,109 @@ static void gen_op_fabsq(TCGv_i128 dst, TCGv_i128 src)
 
 static void gen_op_fmadds(TCGv_i32 d, TCGv_i32 s1, TCGv_i32 s2, TCGv_i32 s3)
 {
-    gen_helper_fmadds(d, tcg_env, s1, s2, s3, tcg_constant_i32(0));
+    TCGv_i32 z = tcg_constant_i32(0);
+    gen_helper_fmadds(d, tcg_env, s1, s2, s3, z, z);
 }
 
 static void gen_op_fmaddd(TCGv_i64 d, TCGv_i64 s1, TCGv_i64 s2, TCGv_i64 s3)
 {
-    gen_helper_fmaddd(d, tcg_env, s1, s2, s3, tcg_constant_i32(0));
+    TCGv_i32 z = tcg_constant_i32(0);
+    gen_helper_fmaddd(d, tcg_env, s1, s2, s3, z, z);
 }
 
 static void gen_op_fmsubs(TCGv_i32 d, TCGv_i32 s1, TCGv_i32 s2, TCGv_i32 s3)
 {
-    int op = float_muladd_negate_c;
-    gen_helper_fmadds(d, tcg_env, s1, s2, s3, tcg_constant_i32(op));
+    TCGv_i32 z = tcg_constant_i32(0);
+    TCGv_i32 op = tcg_constant_i32(float_muladd_negate_c);
+    gen_helper_fmadds(d, tcg_env, s1, s2, s3, z, op);
 }
 
 static void gen_op_fmsubd(TCGv_i64 d, TCGv_i64 s1, TCGv_i64 s2, TCGv_i64 s3)
 {
-    int op = float_muladd_negate_c;
-    gen_helper_fmaddd(d, tcg_env, s1, s2, s3, tcg_constant_i32(op));
+    TCGv_i32 z = tcg_constant_i32(0);
+    TCGv_i32 op = tcg_constant_i32(float_muladd_negate_c);
+    gen_helper_fmaddd(d, tcg_env, s1, s2, s3, z, op);
 }
 
 static void gen_op_fnmsubs(TCGv_i32 d, TCGv_i32 s1, TCGv_i32 s2, TCGv_i32 s3)
 {
-    int op = float_muladd_negate_c | float_muladd_negate_result;
-    gen_helper_fmadds(d, tcg_env, s1, s2, s3, tcg_constant_i32(op));
+    TCGv_i32 z = tcg_constant_i32(0);
+    TCGv_i32 op = tcg_constant_i32(float_muladd_negate_c |
+                                   float_muladd_negate_result);
+    gen_helper_fmadds(d, tcg_env, s1, s2, s3, z, op);
 }
 
 static void gen_op_fnmsubd(TCGv_i64 d, TCGv_i64 s1, TCGv_i64 s2, TCGv_i64 s3)
 {
-    int op = float_muladd_negate_c | float_muladd_negate_result;
-    gen_helper_fmaddd(d, tcg_env, s1, s2, s3, tcg_constant_i32(op));
+    TCGv_i32 z = tcg_constant_i32(0);
+    TCGv_i32 op = tcg_constant_i32(float_muladd_negate_c |
+                                   float_muladd_negate_result);
+    gen_helper_fmaddd(d, tcg_env, s1, s2, s3, z, op);
 }
 
 static void gen_op_fnmadds(TCGv_i32 d, TCGv_i32 s1, TCGv_i32 s2, TCGv_i32 s3)
 {
-    int op = float_muladd_negate_result;
-    gen_helper_fmadds(d, tcg_env, s1, s2, s3, tcg_constant_i32(op));
+    TCGv_i32 z = tcg_constant_i32(0);
+    TCGv_i32 op = tcg_constant_i32(float_muladd_negate_result);
+    gen_helper_fmadds(d, tcg_env, s1, s2, s3, z, op);
 }
 
 static void gen_op_fnmaddd(TCGv_i64 d, TCGv_i64 s1, TCGv_i64 s2, TCGv_i64 s3)
 {
-    int op = float_muladd_negate_result;
-    gen_helper_fmaddd(d, tcg_env, s1, s2, s3, tcg_constant_i32(op));
+    TCGv_i32 z = tcg_constant_i32(0);
+    TCGv_i32 op = tcg_constant_i32(float_muladd_negate_result);
+    gen_helper_fmaddd(d, tcg_env, s1, s2, s3, z, op);
 }
 
 /* Use muladd to compute (1 * src1) + src2 / 2 with one rounding. */
 static void gen_op_fhadds(TCGv_i32 d, TCGv_i32 s1, TCGv_i32 s2)
 {
-    TCGv_i32 one = tcg_constant_i32(float32_one);
-    int op = float_muladd_halve_result;
-    gen_helper_fmadds(d, tcg_env, one, s1, s2, tcg_constant_i32(op));
+    TCGv_i32 fone = tcg_constant_i32(float32_one);
+    TCGv_i32 mone = tcg_constant_i32(-1);
+    TCGv_i32 op = tcg_constant_i32(0);
+    gen_helper_fmadds(d, tcg_env, fone, s1, s2, mone, op);
 }
 
 static void gen_op_fhaddd(TCGv_i64 d, TCGv_i64 s1, TCGv_i64 s2)
 {
-    TCGv_i64 one = tcg_constant_i64(float64_one);
-    int op = float_muladd_halve_result;
-    gen_helper_fmaddd(d, tcg_env, one, s1, s2, tcg_constant_i32(op));
+    TCGv_i64 fone = tcg_constant_i64(float64_one);
+    TCGv_i32 mone = tcg_constant_i32(-1);
+    TCGv_i32 op = tcg_constant_i32(0);
+    gen_helper_fmaddd(d, tcg_env, fone, s1, s2, mone, op);
 }
 
 /* Use muladd to compute (1 * src1) - src2 / 2 with one rounding. */
 static void gen_op_fhsubs(TCGv_i32 d, TCGv_i32 s1, TCGv_i32 s2)
 {
-    TCGv_i32 one = tcg_constant_i32(float32_one);
-    int op = float_muladd_negate_c | float_muladd_halve_result;
-    gen_helper_fmadds(d, tcg_env, one, s1, s2, tcg_constant_i32(op));
+    TCGv_i32 fone = tcg_constant_i32(float32_one);
+    TCGv_i32 mone = tcg_constant_i32(-1);
+    TCGv_i32 op = tcg_constant_i32(float_muladd_negate_c);
+    gen_helper_fmadds(d, tcg_env, fone, s1, s2, mone, op);
 }
 
 static void gen_op_fhsubd(TCGv_i64 d, TCGv_i64 s1, TCGv_i64 s2)
 {
-    TCGv_i64 one = tcg_constant_i64(float64_one);
-    int op = float_muladd_negate_c | float_muladd_halve_result;
-    gen_helper_fmaddd(d, tcg_env, one, s1, s2, tcg_constant_i32(op));
+    TCGv_i64 fone = tcg_constant_i64(float64_one);
+    TCGv_i32 mone = tcg_constant_i32(-1);
+    TCGv_i32 op = tcg_constant_i32(float_muladd_negate_c);
+    gen_helper_fmaddd(d, tcg_env, fone, s1, s2, mone, op);
 }
 
 /* Use muladd to compute -((1 * src1) + src2 / 2) with one rounding. */
 static void gen_op_fnhadds(TCGv_i32 d, TCGv_i32 s1, TCGv_i32 s2)
 {
-    TCGv_i32 one = tcg_constant_i32(float32_one);
-    int op = float_muladd_negate_result | float_muladd_halve_result;
-    gen_helper_fmadds(d, tcg_env, one, s1, s2, tcg_constant_i32(op));
+    TCGv_i32 fone = tcg_constant_i32(float32_one);
+    TCGv_i32 mone = tcg_constant_i32(-1);
+    TCGv_i32 op = tcg_constant_i32(float_muladd_negate_result);
+    gen_helper_fmadds(d, tcg_env, fone, s1, s2, mone, op);
 }
 
 static void gen_op_fnhaddd(TCGv_i64 d, TCGv_i64 s1, TCGv_i64 s2)
 {
-    TCGv_i64 one = tcg_constant_i64(float64_one);
-    int op = float_muladd_negate_result | float_muladd_halve_result;
-    gen_helper_fmaddd(d, tcg_env, one, s1, s2, tcg_constant_i32(op));
+    TCGv_i64 fone = tcg_constant_i64(float64_one);
+    TCGv_i32 mone = tcg_constant_i32(-1);
+    TCGv_i32 op = tcg_constant_i32(float_muladd_negate_result);
+    gen_helper_fmaddd(d, tcg_env, fone, s1, s2, mone, op);
 }
 
 static void gen_op_fpexception_im(DisasContext *dc, int ftt)
