softfloat: Move return_nan to softfloat-parts.c.inc

At the same time, convert to pointers, rename to return_nan$N
and define a macro for return_nan using QEMU_GENERIC.

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc
new file mode 100644
index 0000000000..2a3075d6fe
--- /dev/null
+++ b/fpu/softfloat-parts.c.inc
@@ -0,0 +1,37 @@
+/*
+ * QEMU float support
+ *
+ * The code in this source file is derived from release 2a of the SoftFloat
+ * IEC/IEEE Floating-point Arithmetic Package. Those parts of the code (and
+ * some later contributions) are provided under that license, as detailed below.
+ * It has subsequently been modified by contributors to the QEMU Project,
+ * so some portions are provided under:
+ *  the SoftFloat-2a license
+ *  the BSD license
+ *  GPL-v2-or-later
+ *
+ * Any future contributions to this file after December 1st 2014 will be
+ * taken to be licensed under the Softfloat-2a license unless specifically
+ * indicated otherwise.
+ */
+
+static void partsN(return_nan)(FloatPartsN *a, float_status *s)
+{
+    switch (a->cls) {
+    case float_class_snan:
+        float_raise(float_flag_invalid, s);
+        if (s->default_nan_mode) {
+            parts_default_nan(a, s);
+        } else {
+            parts_silence_nan(a, s);
+        }
+        break;
+    case float_class_qnan:
+        if (s->default_nan_mode) {
+            parts_default_nan(a, s);
+        }
+        break;
+    default:
+        g_assert_not_reached();
+    }
+}