2006-10-27 Joel Schopp <jschopp@austin.ibm.com>

        * libc/machine/spu/memcpy.c: Override generic function with vectorized
        version optimized for the cell spu.
        * libc/machine/spu/memmove.c: Ditto.
        * libc/machine/spu/memset.c: Ditto.
        * libc/machine/spu/strcat.c: Ditto.
        * libc/machine/spu/strchr.c: Ditto.
        * libc/machine/spu/strcmp.c: Ditto.
        * libc/machine/spu/strcpy.c: Ditto.
        * libc/machine/spu/strcspn.c: Ditto.
        * libc/machine/spu/strlen.c: Ditto.
        * libc/machine/spu/strncat.c: Ditto.
        * libc/machine/spu/strncmp.c: Ditto.
        * libc/machine/spu/strncpy.c: Ditto.
        * libc/machine/spu/strpbrk.c: Ditto.
        * libc/machine/spu/strrchr.c: Ditto.
        * libc/machine/spu/strspn.c: Ditto.
        * libc/machine/spu/strxfrm.c: Ditto.
        * libc/machine/spu/vec_literal.h: Add abstraction of vector literals,
        removing altivec style initializers.
        * libc/machine/spu/Makefile.am: Add new files to list so they build
        * libc/machine/spu/Makefile.in: Regenerate from new Makefile.am

1 files changed, 66 insertions, 0 deletions

diff --git a/newlib/libc/machine/spu/strlen.c b/newlib/libc/machine/spu/strlen.c
new file mode 100644
index 000000000..8a7ae07ab
--- /dev/null
+++ b/newlib/libc/machine/spu/strlen.c
@@ -0,0 +1,66 @@
+/*
+  (C) Copyright 2001,2006,
+  International Business Machines Corporation,
+  Sony Computer Entertainment, Incorporated,
+  Toshiba Corporation,
+
+  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 names of the copyright holders nor the names of their
+  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 <spu_intrinsics.h>
+#include <stddef.h>
+
+/* Calculates  the  length  of  the string s, not including the terminating
+ * \0 character.
+ */
+size_t strlen(const char *s)
+{
+  size_t len;
+  unsigned int cnt, cmp, skip, mask;
+  vec_uchar16 *ptr, data;
+
+  /* Compensate for initial mis-aligned string.
+   */
+  ptr = (vec_uchar16 *)s;
+  skip = (unsigned int)(ptr) & 15;
+  mask = 0xFFFF >> skip;
+
+  data = *ptr++;
+  cmp = spu_extract(spu_gather(spu_cmpeq(data, 0)), 0);
+  cmp &= mask;
+
+  cnt = spu_extract(spu_cntlz(spu_promote(cmp, 0)), 0);
+  len = cnt - (skip + 16);
+
+  while (cnt == 32) {
+    data = *ptr++;
+    len -= 16;
+    cnt = spu_extract(spu_cntlz(spu_gather(spu_cmpeq(data, 0))), 0);
+    len += cnt;
+  }
+
+  return (len);
+}