* examples/work/conv.c: (conv_s16_f32_asm1), (register_impls):

add me

2 files changed, 90 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 6a8b066..b9c7b42 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2005-03-17  David Schleef  <ds@schleef.org>
 
+	* examples/work/conv.c: (conv_s16_f32_asm1), (register_impls):
+	add me
+
+2005-03-17  David Schleef  <ds@schleef.org>
+
 	* liboil/simdpack/vectoradd_s_i386.c: need this too.  part of
 	the patch below.
 
diff --git a/examples/work/conv.c b/examples/work/conv.c
new file mode 100644
index 0000000..ac8aede
--- /dev/null
+++ b/examples/work/conv.c
@@ -0,0 +1,85 @@
+/*
+ * LIBOIL - Library of Optimized Inner Loops
+ * Copyright (c) 2004 David A. Schleef <ds@schleef.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <liboil/liboil.h>
+#include "liboil/conv/conv.h"
+
+
+#define REGISTER_IMPL(name,klass) do { \
+  static OilFunctionImpl impl = { \
+    NULL, \
+    NULL, \
+    name, \
+    0, \
+    #name, \
+    0, \
+    0 \
+  }; \
+  oil_class_register_impl_by_name ( #klass , &impl); \
+} while(0)
+
+
+void
+conv_s16_f32_asm1 (int16_t *dest, int dstr, float *src, int sstr, int n)
+{
+  int i;
+  int16_t tmp[2];
+  const float constants[][2] = {
+    { -0.5, -0.5 },
+    { -1.0, -1.0 }
+  };
+
+  for(i=0;i<n;i++){
+    asm volatile(
+        "  movq 0(%0), %%mm0 \n"
+        "  pfadd 0(%2), %%mm0 \n"
+        "  pf2id %%mm0, %%mm1 \n"
+        "  pfcmpgt 0(%2), %%mm0 \n"
+        "  psubd %%mm0, %%mm1 \n"
+        "  movd %%mm1, 0(%1) \n"
+        :
+        : "r" (src), "r" (tmp), "r" (constants)
+        : "mm0"
+    );
+    dest[0] = tmp[0];
+    dest = OIL_OFFSET(dest, dstr);
+    src = OIL_OFFSET(src, sstr);
+  }
+  asm volatile ("emms");
+}
+
+void
+register_impls (void)
+{
+  REGISTER_IMPL(conv_s16_f32_asm1, conv_s16_f32);
+}
+
+