diff --git a/linux-user/sparc_quad_float.c b/linux-user/sparc_quad_float.c
new file mode 100644
index 000000000..f0d7f299b
--- /dev/null
+++ b/linux-user/sparc_quad_float.c
@@ -0,0 +1,124 @@
+#include "exec.h"
+#include "host-utils.h"
+#include "helper.h"
+
+#define F_HELPER(name, p) void helper_f##name##p(void)
+
+#define F_BINOP(name)                                           \
+    F_HELPER(name, q)                                           \
+    {                                                           \
+        QT0 = float128_ ## name (QT0, QT1, &env->fp_status);    \
+    }
+
+F_BINOP(add);
+F_BINOP(sub);
+F_BINOP(mul);
+F_BINOP(div);
+#undef F_BINOP
+
+void helper_fdmulq(void)
+{
+    QT0 = float128_mul(float64_to_float128(DT0, &env->fp_status),
+                       float64_to_float128(DT1, &env->fp_status),
+                       &env->fp_status);
+}
+
+F_HELPER(ito, q)
+{
+    QT0 = int32_to_float128(*((int32_t *)&FT1), &env->fp_status);
+}
+
+void helper_fqtos(void)
+{
+    FT0 = float128_to_float32(QT1, &env->fp_status);
+}
+
+void helper_fstoq(void)
+{
+    QT0 = float32_to_float128(FT1, &env->fp_status);
+}
+
+void helper_fqtod(void)
+{
+    DT0 = float128_to_float64(QT1, &env->fp_status);
+}
+
+void helper_fdtoq(void)
+{
+    QT0 = float64_to_float128(DT1, &env->fp_status);
+}
+
+void helper_fqtoi(void)
+{
+    *((int32_t *)&FT0) = float128_to_int32_round_to_zero(QT1, &env->fp_status);
+}
+
+void helper_fsqrtq(void)
+{
+    QT0 = float128_sqrt(QT1, &env->fp_status);
+}
+
+#ifdef TARGET_SPARC64
+F_HELPER(neg, q)
+{
+    QT0 = float128_chs(QT1);
+}
+
+F_HELPER(xto, q)
+{
+    QT0 = int64_to_float128(*((int64_t *)&DT1), &env->fp_status);
+}
+
+void helper_fqtox(void)
+{
+    *((int64_t *)&DT0) = float128_to_int64_round_to_zero(QT1, &env->fp_status);
+}
+
+void helper_fabsq(void)
+{
+    QT0 = float128_abs(QT1);
+}
+#endif
+
+#define GEN_FCMP(name, size, reg1, reg2, FS, TRAP)                      \
+    void glue(helper_, name) (void)                                     \
+    {                                                                   \
+        target_ulong new_fsr;                                           \
+                                                                        \
+        env->fsr &= ~((FSR_FCC1 | FSR_FCC0) << FS);                     \
+        switch (glue(size, _compare) (reg1, reg2, &env->fp_status)) {   \
+        case float_relation_unordered:                                  \
+            new_fsr = (FSR_FCC1 | FSR_FCC0) << FS;                      \
+            if ((env->fsr & FSR_NVM) || TRAP) {                         \
+                env->fsr |= new_fsr;                                    \
+                env->fsr |= FSR_NVC;                                    \
+                env->fsr |= FSR_FTT_IEEE_EXCP;                          \
+                raise_exception(TT_FP_EXCP);                            \
+            } else {                                                    \
+                env->fsr |= FSR_NVA;                                    \
+            }                                                           \
+            break;                                                      \
+        case float_relation_less:                                       \
+            new_fsr = FSR_FCC0 << FS;                                   \
+            break;                                                      \
+        case float_relation_greater:                                    \
+            new_fsr = FSR_FCC1 << FS;                                   \
+            break;                                                      \
+        default:                                                        \
+            new_fsr = 0;                                                \
+            break;                                                      \
+        }                                                               \
+        env->fsr |= new_fsr;                                            \
+    }
+
+GEN_FCMP(fcmpq, float128, QT0, QT1, 0, 0);
+GEN_FCMP(fcmpeq, float128, QT0, QT1, 0, 1);
+
+#ifdef TARGET_SPARC64
+GEN_FCMP(fcmpq_fcc1, float128, QT0, QT1, 22, 0);
+GEN_FCMP(fcmpq_fcc2, float128, QT0, QT1, 24, 0);
+GEN_FCMP(fcmpq_fcc3, float128, QT0, QT1, 26, 0);
+GEN_FCMP(fcmpeq_fcc1, float128, QT0, QT1, 22, 1);
+GEN_FCMP(fcmpeq_fcc2, float128, QT0, QT1, 24, 1);
+GEN_FCMP(fcmpeq_fcc3, float128, QT0, QT1, 26, 1);
+#endif