New single instruction math operation header

Originally committed as revision 6291 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 31 insertions, 0 deletions

diff --git a/libavcodec/ppc/mathops.h b/libavcodec/ppc/mathops.h
new file mode 100644
index 0000000000..acb0dbfbf2
--- /dev/null
+++ b/libavcodec/ppc/mathops.h
@@ -0,0 +1,31 @@
+/*
+ * simple math operations
+ * Copyright (c) 2001, 2002 Fabrice Bellard.
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#if defined(ARCH_POWERPC_405)
+/* signed 16x16 -> 32 multiply add accumulate */
+#   define MAC16(rt, ra, rb) \
+        asm ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
+
+/* signed 16x16 -> 32 multiply */
+#   define MUL16(ra, rb) \
+        ({ int __rt;
+         asm ("mullhw %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb));
+         __rt; })
+#endif