sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 60 insertions, 0 deletions

diff --git a/device/lib/pic16/libc/string/memmove.c b/device/lib/pic16/libc/string/memmove.c
new file mode 100644
index 0000000..634847f
--- /dev/null
+++ b/device/lib/pic16/libc/string/memmove.c
@@ -0,0 +1,60 @@
+/*-------------------------------------------------------------------------
+   memmove.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.net>
+   Adapted by Erik Petrich <epetrich at users.sourceforge.net>
+
+   This library is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this library; see the file COPYING. If not, write to the
+   Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA.
+
+   As a special exception, if you link this library with other files,
+   some of which are compiled with SDCC, to produce an executable,
+   this library does not by itself cause the resulting executable to
+   be covered by the GNU General Public License. This exception does
+   not however invalidate any other reasons why the executable file
+   might be covered by the GNU General Public License.
+-------------------------------------------------------------------------*/
+
+#include <string.h>
+
+void *
+memmove (void *dst, const void *src, size_t acount)
+{
+  char *d;
+  const char *s;
+
+  if (((int)src < (int)dst) && ((((int)src) + acount) > (int)dst))
+    {
+      /*
+       * copy from higher addresses to lower addresses
+       */
+      d = ((char *)dst) + acount - 1;
+      s = ((char *)src) + acount - 1;
+      while (acount--)
+      	*d-- = *s--;
+    }
+  else
+    {
+      /*
+       * copy from lower addresses to higher addresses
+       */
+      d = dst;
+      s = src;
+      while (acount--)
+      	*d++ = *s++;
+    }
+
+  return dst;
+}