target/ppc: Split out float_invalid_op_mul

Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>

target/ppc/fpu_helper.c

@@ -689,6 +689,17 @@ float64 helper_fsub(CPUPPCState *env, float64 arg1, float64 arg2)
     return ret;
 }
 
+static void float_invalid_op_mul(CPUPPCState *env, bool set_fprc,
+                                 uintptr_t retaddr, int classes)
+{
+    if ((classes & (is_zero | is_inf)) == (is_zero | is_inf)) {
+        /* Multiplication of zero by infinity */
+        float_invalid_op_vximz(env, set_fprc, retaddr);
+    } else if (classes & is_snan) {
+        float_invalid_op_vxsnan(env, retaddr);
+    }
+}
+
 /* fmul - fmul. */
 float64 helper_fmul(CPUPPCState *env, float64 arg1, float64 arg2)
 {
@@ -696,15 +707,9 @@ float64 helper_fmul(CPUPPCState *env, float64 arg1, float64 arg2)
     int status = get_float_exception_flags(&env->fp_status);
 
     if (unlikely(status & float_flag_invalid)) {
-        if ((float64_is_infinity(arg1) && float64_is_zero(arg2)) ||
-            (float64_is_zero(arg1) && float64_is_infinity(arg2))) {
-            /* Multiplication of zero by infinity */
-            float_invalid_op_vximz(env, 1, GETPC());
-        } else if (float64_is_signaling_nan(arg1, &env->fp_status) ||
-                   float64_is_signaling_nan(arg2, &env->fp_status)) {
-            /* sNaN multiplication */
-            float_invalid_op_vxsnan(env, GETPC());
-        }
+        float_invalid_op_mul(env, 1, GETPC(),
+                             float64_classify(arg1) |
+                             float64_classify(arg2));
     }
 
     return ret;
@@ -1886,13 +1891,9 @@ void helper_##op(CPUPPCState *env, uint32_t opcode)                          \
         env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
                                                                              \
         if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {    \
-            if ((tp##_is_infinity(xa.fld) && tp##_is_zero(xb.fld)) ||        \
-                (tp##_is_infinity(xb.fld) && tp##_is_zero(xa.fld))) {        \
-                float_invalid_op_vximz(env, sfprf, GETPC());                 \
-            } else if (tp##_is_signaling_nan(xa.fld, &tstat) ||              \
-                       tp##_is_signaling_nan(xb.fld, &tstat)) {              \
-                float_invalid_op_vxsnan(env, GETPC());                       \
-            }                                                                \
+            float_invalid_op_mul(env, sfprf, GETPC(),                        \
+                                 tp##_classify(xa.fld) |                     \
+                                 tp##_classify(xb.fld));                     \
         }                                                                    \
                                                                              \
         if (r2sp) {                                                          \
@@ -1933,13 +1934,9 @@ void helper_xsmulqp(CPUPPCState *env, uint32_t opcode)
     env->fp_status.float_exception_flags |= tstat.float_exception_flags;
 
     if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
-        if ((float128_is_infinity(xa.f128) && float128_is_zero(xb.f128)) ||
-            (float128_is_infinity(xb.f128) && float128_is_zero(xa.f128))) {
-            float_invalid_op_vximz(env, 1, GETPC());
-        } else if (float128_is_signaling_nan(xa.f128, &tstat) ||
-                   float128_is_signaling_nan(xb.f128, &tstat)) {
-            float_invalid_op_vxsnan(env, GETPC());
-        }
+        float_invalid_op_mul(env, 1, GETPC(),
+                             float128_classify(xa.f128) |
+                             float128_classify(xb.f128));
     }
     helper_compute_fprf_float128(env, xt.f128);