From 7995962d4b23619e4cc52b4466f85488749bc718 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?M=C3=A5ns=20Rullg=C3=A5rd?= <mans@mansr.com>
Date: Tue, 15 Jul 2008 19:06:25 +0000
Subject: [PATCH] ARM: ARMv6 optimised MULH

Originally committed as revision 14243 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/armv4l/mathops.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/libavcodec/armv4l/mathops.h b/libavcodec/armv4l/mathops.h
index cc097c3fff..dd53310683 100644
--- a/libavcodec/armv4l/mathops.h
+++ b/libavcodec/armv4l/mathops.h
@@ -33,10 +33,20 @@
          hi; })
 #endif
 
+#ifdef HAVE_ARMV6
+static inline av_const int MULH(int a, int b)
+{
+    int r;
+    asm ("smmul %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
+    return r;
+}
+#define MULH MULH
+#else
 #define MULH(a, b) \
     ({ int lo, hi;\
      asm ("smull %0, %1, %2, %3" : "=&r"(lo), "=&r"(hi) : "r"(b), "r"(a));\
      hi; })
+#endif
 
 #if defined(HAVE_ARMV5TE)