From fe8ae10ab41af912bee3d6c5b0dd50ddc74739fa Mon Sep 17 00:00:00 2001
From: Michael Giacomelli <giac2000@hotmail.com>
Date: Wed, 4 Jul 2007 17:51:52 +0000
Subject: Attempt #2

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13786 a1c6a512-1295-4272-9138-f99709370657
---
 apps/codecs/libwma/wmafixed.h | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'apps/codecs/libwma/wmafixed.h')

diff --git a/apps/codecs/libwma/wmafixed.h b/apps/codecs/libwma/wmafixed.h
index 878601d799..887973a78a 100644
--- a/apps/codecs/libwma/wmafixed.h
+++ b/apps/codecs/libwma/wmafixed.h
@@ -85,7 +85,30 @@ long fsincos(unsigned long phase, fixed32 *cos);
     })
 
 
+#elif defined(CPU_COLDFIRE)
+static inline int32_t fixmul32(int32_t x, int32_t y)
+{
+#if PRECISION != 16
+#warning Coldfire fixmul32() only works for PRECISION == 16
+#endif
+    int32_t t1;
+    asm (
+        "mac.l   %[x], %[y], %%acc0  \n" /* multiply */
+        "mulu.l  %[y], %[x]      \n"     /* get lower half, avoid emac stall */
+        "movclr.l %%acc0, %[t1]  \n"     /* get higher half */
+        "lsr.l   #1, %[t1]       \n"
+        "move.w  %[t1], %[x]     \n"
+        "swap    %[x]            \n"
+        : /* outputs */
+        [t1]"=&d"(t1),
+        [x] "+d" (x)
+        : /* inputs */
+        [y] "d"  (y)
+    );
+    return x;
+}
 #else
+
 fixed32 fixmul32(fixed32 x, fixed32 y);
 fixed32 fixmul32b(fixed32 x, fixed32 y);
 #endif
-- 
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