1 files changed, 76 insertions, 0 deletions
diff --git a/newlib/libc/machine/spu/memcpy_ea.c b/newlib/libc/machine/spu/memcpy_ea.c
new file mode 100644
index 000000000..6dfea7abb
--- /dev/null
+++ b/newlib/libc/machine/spu/memcpy_ea.c
@@ -0,0 +1,76 @@
+/*
+(C) Copyright IBM Corp. 2007, 2008
+
+All rights reserved.
+
+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 IBM 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 COPYRIGHT OWNER 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.
+
+*/
+
+#include <string.h>
+#include <stddef.h>
+#include "ea_internal.h"
+#include <ea.h>
+#include <spu_cache.h>
+
+COMPAT_EA_ALIAS (memcpy_ea);
+
+__ea void *
+memcpy_ea (__ea void *dest, __ea const void *src, size_ea_t n)
+{
+  __ea void *curr_dest = dest;
+  __ea const void *curr_src = src;
+  void *l_dest;
+  void *l_src;
+  size_ea_t local_n;
+  size_ea_t src_n;
+  size_ea_t dst_n;
+
+  while (n)
+    {
+      l_src = __cache_fetch ((__ea void *) curr_src);
+
+      /*
+       * use the smaller of the size left to copy (n), the space left in the
+       * src cacheline (src_n), or the space left in the destination
+       * cacheline (dst_n)
+       */
+      src_n = ROUND_UP_NEXT_128 ((size_ea_t) curr_src) - (size_ea_t) curr_src;
+      dst_n =
+	ROUND_UP_NEXT_128 ((size_ea_t) curr_dest) - (size_ea_t) curr_dest;
+      local_n = three_way_min (src_n, dst_n, n);
+
+      l_dest = __cache_fetch_dirty (curr_dest, local_n);
+
+      memcpy (l_dest, l_src, local_n);
+
+      /* update values to take into account what we copied */
+      curr_src += local_n;
+      curr_dest += local_n;
+      n -= local_n;
+    }
+
+  return dest;
+}