1 files changed, 79 insertions, 0 deletions
diff --git a/ffmpeg1/libavcodec/ppc/mathops.h b/ffmpeg1/libavcodec/ppc/mathops.h
new file mode 100644
index 0000000..dbd714f
--- /dev/null
+++ b/ffmpeg1/libavcodec/ppc/mathops.h
@@ -0,0 +1,79 @@
+/*
+ * simple math operations
+ * Copyright (c) 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_PPC_MATHOPS_H
+#define AVCODEC_PPC_MATHOPS_H
+
+#include <stdint.h>
+#include "config.h"
+#include "libavutil/common.h"
+
+#if HAVE_PPC4XX
+/* 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
+
+#define MULH MULH
+static inline av_const int MULH(int a, int b){
+    int r;
+    __asm__ ("mulhw %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
+    return r;
+}
+
+#if !ARCH_PPC64
+static inline av_const int64_t MAC64(int64_t d, int a, int b)
+{
+    union { uint64_t x; unsigned hl[2]; } x = { d };
+    int h, l;
+    __asm__ ("mullw %3, %4, %5   \n\t"
+             "mulhw %2, %4, %5   \n\t"
+             "addc  %1, %1, %3   \n\t"
+             "adde  %0, %0, %2   \n\t"
+             : "+r"(x.hl[0]), "+r"(x.hl[1]), "=&r"(h), "=&r"(l)
+             : "r"(a), "r"(b));
+    return x.x;
+}
+#define MAC64(d, a, b) ((d) = MAC64(d, a, b))
+
+static inline av_const int64_t MLS64(int64_t d, int a, int b)
+{
+    union { uint64_t x; unsigned hl[2]; } x = { d };
+    int h, l;
+    __asm__ ("mullw %3, %4, %5   \n\t"
+             "mulhw %2, %4, %5   \n\t"
+             "subfc %1, %3, %1   \n\t"
+             "subfe %0, %2, %0   \n\t"
+             : "+r"(x.hl[0]), "+r"(x.hl[1]), "=&r"(h), "=&r"(l)
+             : "r"(a), "r"(b));
+    return x.x;
+}
+#define MLS64(d, a, b) ((d) = MLS64(d, a, b))
+#endif
+
+#endif /* AVCODEC_PPC_MATHOPS_H */