Added libspeex to revision control, and updated Makefile to use it.

code/libspeex/misc_bfin.h

@@ -0,0 +1,54 @@
+/* Copyright (C) 2005 Analog Devices */
+/**
+   @file misc_bfin.h
+   @author Jean-Marc Valin 
+   @brief Various compatibility routines for Speex (Blackfin version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define OVERRIDE_SPEEX_MOVE
+void *speex_move (void *dest, void *src, int n)
+{
+   __asm__ __volatile__
+         (
+         "L0 = 0;\n\t"
+         "I0 = %0;\n\t"
+         "R0 = [I0++];\n\t"
+         "LOOP move%= LC0 = %2;\n\t"
+         "LOOP_BEGIN move%=;\n\t"
+            "[%1++] = R0 || R0 = [I0++];\n\t"
+         "LOOP_END move%=;\n\t"
+         "[%1++] = R0;\n\t"
+   : "=a" (src), "=a" (dest)
+   : "a" ((n>>2)-1), "0" (src), "1" (dest)
+   : "R0", "I0", "L0", "memory"
+         );
+   return dest;
+}