CRIS/CRISv32 architecture specific memcpy, memmove and memset.

1 files changed, 62 insertions, 0 deletions

diff --git a/libc/string/cris/memcopy.h b/libc/string/cris/memcopy.h
new file mode 100644
index 000000000..0eae998da
--- /dev/null
+++ b/libc/string/cris/memcopy.h
@@ -0,0 +1,62 @@
+/* Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   Modified for use in uClibc (C) 2007 Axis Communications AB.
+   Minimal modifications: include path name and #undef of WORD_COPY_FWD/BWD
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include "../generic/memcopy.h"
+
+/* We override the word-copying macros, partly because misalignment in one
+   pointer isn't cause for a special function, partly because we want to
+   get rid of all the static functions in generic/memcopy.c; these macros 
+   are only used in memmove.c since we have arch-specific mempcpy, memcpy and
+   memset.  */
+
+#undef OP_T_THRES
+#define OP_T_THRES OPSIZ
+
+#undef WORD_COPY_FWD
+#define WORD_COPY_FWD(dst_bp, src_bp, nbytes_left, nbytes)		\
+  do									\
+    {									\
+      unsigned long enddst_bp = dst_bp + nbytes - (nbytes % OPSIZ);	\
+      nbytes_left = (nbytes % OPSIZ);					\
+      while (dst_bp < (unsigned long) enddst_bp)			\
+	{								\
+	  op_t x = *(op_t *) src_bp;					\
+	  src_bp += sizeof x;						\
+	  *(op_t *) dst_bp = x;						\
+	  dst_bp += sizeof x;						\
+	}								\
+    } while (0)
+
+#undef WORD_COPY_BWD
+#define WORD_COPY_BWD(dst_bp, src_bp, nbytes_left, nbytes)		\
+  do									\
+    {									\
+      unsigned long enddst_bp = dst_bp - nbytes + (nbytes % OPSIZ);	\
+      nbytes_left = (nbytes % OPSIZ);					\
+      while (dst_bp > enddst_bp)					\
+	{								\
+	  op_t x;							\
+	  src_bp -= sizeof x;						\
+	  x = *(op_t *) src_bp;						\
+	  dst_bp -= sizeof x;						\
+	  *(op_t *) dst_bp = x;						\
+	}								\
+    } while (0)