1 files changed, 86 insertions, 0 deletions
diff --git a/newlib/libc/machine/spu/strcmp_ea.c b/newlib/libc/machine/spu/strcmp_ea.c
new file mode 100644
index 000000000..2c9c5ebb2
--- /dev/null
+++ b/newlib/libc/machine/spu/strcmp_ea.c
@@ -0,0 +1,86 @@
+/*
+(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 <sys/param.h>
+#include <spu_cache.h>
+#include <spu_intrinsics.h>
+#include "ea_internal.h"
+#include "strncmp.h"
+#include <ea.h>
+
+COMPAT_EA_ALIAS (strcmp_ea);
+
+/*
+ * It's not clear what is returned if both strings are equal to
+ * each other up to the length of the shorter string.
+ */
+int
+strcmp_ea (__ea char *s1, __ea const char *s2)
+{
+  __ea char *curr_s1 = (__ea char *) s1;
+  __ea char *curr_s2 = (__ea char *) s2;
+  void *l_s1;
+  void *l_s2;
+  size_ea_t s2_n;
+  size_ea_t s1_n;
+  int min;
+  int ret;
+  vec_uint4 end_v;
+
+  while (1)
+    {
+      l_s2 = __cache_fetch (curr_s2);
+      l_s1 = __cache_fetch (curr_s1);
+      /*
+       * Use the smaller of the the space left in s2 cacheline or
+       * the space left in the s1 cacheline.
+       */
+      s2_n = ROUND_UP_NEXT_128 ((size_ea_t) curr_s2) - (size_ea_t) curr_s2;
+      s1_n = ROUND_UP_NEXT_128 ((size_ea_t) curr_s1) - (size_ea_t) curr_s1;
+      min = MIN (s2_n, s1_n);
+
+      ret = _strncmp_internal (l_s1, l_s2, min, &end_v, 1);
+      /*
+       * Only the first slot of end_v is set.
+       */
+      if (ret || spu_extract (end_v, 0))
+	/*
+	 * If any NUL values were seen (end_v values of zero) we still have
+	 * to return ret, as it might not be zero.
+	 */
+	return ret;
+
+      curr_s1 += min;
+      curr_s2 += min;
+    }
+}