sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

27 files changed, 1277 insertions, 0 deletions

diff --git a/device/lib/pic16/libc/string/memccpy.c b/device/lib/pic16/libc/string/memccpy.c
new file mode 100644
index 0000000..015b829
--- /dev/null
+++ b/device/lib/pic16/libc/string/memccpy.c
@@ -0,0 +1,50 @@
+/*-------------------------------------------------------------------------
+   memccpy.c - part of string library functions
+
+   Copyright (C) 2004, Vangelis Rokas <vrokas at otenet.gr>
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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 *
+memccpy (void *dst, void *src, char c, size_t acount) 
+{
+  char *d = dst;
+  char *s = src;
+	
+  /*
+   * copy from lower addresses to higher addresses
+   */
+  while (acount--)
+    {
+      if (*s == c)
+        return ++s;
+
+      *d++ = *s++;
+    }
+
+  return NULL;
+}
diff --git a/device/lib/pic16/libc/string/memchr.c b/device/lib/pic16/libc/string/memchr.c
new file mode 100644
index 0000000..7f46be0
--- /dev/null
+++ b/device/lib/pic16/libc/string/memchr.c
@@ -0,0 +1,48 @@
+/*-------------------------------------------------------------------------
+   memchr.c - part of string library functions
+
+   Copyright (C) 2004, Vangelis Rokas <vrokas at otenet.gr>
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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 *
+memchr (const void *s, char c, size_t count)
+{
+  if (!count)
+    return NULL;
+
+  while ((*(char *)s != c) && count)
+    {
+      s = (char *)s + sizeof (char *);
+      --count;
+    }
+
+  if (count)
+    return s;
+  else
+    return NULL;
+}
diff --git a/device/lib/pic16/libc/string/memchrpgm.c b/device/lib/pic16/libc/string/memchrpgm.c
new file mode 100644
index 0000000..9903b69
--- /dev/null
+++ b/device/lib/pic16/libc/string/memchrpgm.c
@@ -0,0 +1,48 @@
+/*-------------------------------------------------------------------------
+   memchrpgm.c - part of string library functions
+
+   Copyright (C) 2004, Vangelis Rokas <vrokas at otenet.gr>
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+__code void *
+memchrpgm (__code void *s, char c, size_t count)
+{
+  if (!count)
+    return NULL;
+	
+  while ((*(__code char *)s != c) && count)
+    {
+      s = (__code char *)s + sizeof (__code char *);
+      --count;
+    }
+
+  if (count)
+    return s;
+  else
+    return NULL;
+}
diff --git a/device/lib/pic16/libc/string/memchrram.c b/device/lib/pic16/libc/string/memchrram.c
new file mode 100644
index 0000000..4ac8ddf
--- /dev/null
+++ b/device/lib/pic16/libc/string/memchrram.c
@@ -0,0 +1,48 @@
+/*-------------------------------------------------------------------------
+   memchrram.c - part of string library functions
+
+   Copyright (C) 2004, Vangelis Rokas <vrokas at otenet.gr>
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+__data void *
+memchrram (__data void *s, char c, size_t count)
+{
+  if (!count)
+    return NULL;
+	
+  while ((*(__data char *)s != c) && count)
+    {
+      s = (__data char *)s + sizeof (__data char *);
+      --count;
+    }
+
+  if (count)
+    return s;
+  else
+    return NULL;
+}
diff --git a/device/lib/pic16/libc/string/memcmp.c b/device/lib/pic16/libc/string/memcmp.c
new file mode 100644
index 0000000..012d021
--- /dev/null
+++ b/device/lib/pic16/libc/string/memcmp.c
@@ -0,0 +1,44 @@
+/*-------------------------------------------------------------------------
+   memcmp.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+int
+memcmp (const void * buf1, const void * buf2, size_t count)
+{
+  if (!count)
+    return 0;
+
+  while (--count && (*((const char *)buf1) == *((const char *)buf2)))
+    {
+      buf1 = (const char *)buf1 + 1;
+      buf2 = (const char *)buf2 + 1;
+    }
+
+  return *((const unsigned char *)buf1) - *((const unsigned char *)buf2);
+}
diff --git a/device/lib/pic16/libc/string/memcpy.c b/device/lib/pic16/libc/string/memcpy.c
new file mode 100644
index 0000000..dced669
--- /dev/null
+++ b/device/lib/pic16/libc/string/memcpy.c
@@ -0,0 +1,44 @@
+/*-------------------------------------------------------------------------
+   memcpy.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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 *
+memcpy (void *dst, const void *src, size_t acount)
+{
+  char *d = dst;
+  const char *s = src;
+
+  /*
+   * copy from lower addresses to higher addresses
+   */
+  while (acount--)
+    *d++ = *s++;
+
+  return dst;
+}
diff --git a/device/lib/pic16/libc/string/memcpypgm2ram.c b/device/lib/pic16/libc/string/memcpypgm2ram.c
new file mode 100644
index 0000000..3071b91
--- /dev/null
+++ b/device/lib/pic16/libc/string/memcpypgm2ram.c
@@ -0,0 +1,44 @@
+/*-------------------------------------------------------------------------
+   memcpypgm2ram.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+__data void *
+memcpypgm2ram (__data void *dst, __code void *src, size_t acount)
+{
+  char __data *d = dst;
+  char __code *s = src;
+
+  /*
+   * copy from lower addresses to higher addresses
+   */
+  while (acount--)
+    *d++ = *s++;
+
+  return dst;
+}
diff --git a/device/lib/pic16/libc/string/memcpyram2ram.c b/device/lib/pic16/libc/string/memcpyram2ram.c
new file mode 100644
index 0000000..84a67cd
--- /dev/null
+++ b/device/lib/pic16/libc/string/memcpyram2ram.c
@@ -0,0 +1,44 @@
+/*-------------------------------------------------------------------------
+   memcpyram2ram.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+__data void *
+memcpyram2ram (__data void *dst, __data void *src, size_t acount)
+{
+  char __data *d = dst;
+  char __data *s = src;
+
+  /*
+   * copy from lower addresses to higher addresses
+   */
+  while (acount--)
+    *d++ = *s++;
+
+  return dst;
+}
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;
+}
diff --git a/device/lib/pic16/libc/string/memrchr.c b/device/lib/pic16/libc/string/memrchr.c
new file mode 100644
index 0000000..fa82214
--- /dev/null
+++ b/device/lib/pic16/libc/string/memrchr.c
@@ -0,0 +1,50 @@
+/*-------------------------------------------------------------------------
+   memrchr.c - part of string library functions
+
+   Copyright (C) 2004, Vangelis Rokas <vrokas at otenet.gr>
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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 *
+memrchr (void *s, char c, size_t count)
+{
+  if (!count)
+    return NULL;
+
+  s = (char *)s + sizeof (char *) * count;
+
+  while (*(char *)s != c && count)
+    {
+      s = (char *)s - sizeof(char *);
+      --count;
+    }
+
+  if (count)
+    return s;
+  else
+    return NULL;
+}
diff --git a/device/lib/pic16/libc/string/memset.c b/device/lib/pic16/libc/string/memset.c
new file mode 100644
index 0000000..2c6693c
--- /dev/null
+++ b/device/lib/pic16/libc/string/memset.c
@@ -0,0 +1,43 @@
+/*-------------------------------------------------------------------------
+   memset.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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 *
+memset (void _STRING_SPEC *buf, unsigned char ch, size_t count) 
+{
+  register unsigned char *ret = buf;
+
+  while (count--)
+    {
+      *(unsigned char *)ret = ch;
+      ++ret;
+    }
+
+  return buf;
+}
diff --git a/device/lib/pic16/libc/string/strcat.c b/device/lib/pic16/libc/string/strcat.c
new file mode 100644
index 0000000..29be2d4
--- /dev/null
+++ b/device/lib/pic16/libc/string/strcat.c
@@ -0,0 +1,46 @@
+/*-------------------------------------------------------------------------
+   strcat.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+char *
+strcat (char *dst, char *src)
+{
+  char *cp = dst;
+
+  /* find end of dst */
+  while (*cp)
+    cp++;
+
+  /* Copy src to end of dst */
+  while (*cp++ = *src++)
+    ;
+
+  /* return dst */
+  return dst;
+}
diff --git a/device/lib/pic16/libc/string/strchr.c b/device/lib/pic16/libc/string/strchr.c
new file mode 100644
index 0000000..5820e2b
--- /dev/null
+++ b/device/lib/pic16/libc/string/strchr.c
@@ -0,0 +1,41 @@
+/*-------------------------------------------------------------------------
+   strchr.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+char *
+strchr (char *string, char ch)
+{
+  while (*string && *string != ch)
+    ++string;
+
+  if (*string == ch)
+    return string;
+
+  return NULL;
+}
diff --git a/device/lib/pic16/libc/string/strcmp.c b/device/lib/pic16/libc/string/strcmp.c
new file mode 100644
index 0000000..3b35a1c
--- /dev/null
+++ b/device/lib/pic16/libc/string/strcmp.c
@@ -0,0 +1,46 @@
+/*-------------------------------------------------------------------------
+   strcmp.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+int
+strcmp (char *asrc, char *adst)
+{
+  register int ret = 0 ;
+
+  while (!(ret = *asrc - *adst) && *adst)
+    ++asrc, ++adst;
+
+  if (ret < 0)
+    ret = -1 ;
+  else if (ret > 0)
+    ret = 1 ;
+
+  return ret;
+}
+
diff --git a/device/lib/pic16/libc/string/strcpy.c b/device/lib/pic16/libc/string/strcpy.c
new file mode 100644
index 0000000..0cdef92
--- /dev/null
+++ b/device/lib/pic16/libc/string/strcpy.c
@@ -0,0 +1,40 @@
+/*-------------------------------------------------------------------------
+   strcpy.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+char *
+strcpy (char *d, char *s)
+{
+  register char *d1 = d;
+
+  while (*d1++ = *s++)
+    ;
+
+  return d;
+}
diff --git a/device/lib/pic16/libc/string/strcspn.c b/device/lib/pic16/libc/string/strcspn.c
new file mode 100644
index 0000000..6c3e2d1
--- /dev/null
+++ b/device/lib/pic16/libc/string/strcspn.c
@@ -0,0 +1,48 @@
+/*-------------------------------------------------------------------------
+   strcspn.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.net>
+   Bug fixed by Vangelis Rokas <vrokas at otenet.gr> (2004)
+
+   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>
+
+int
+strcspn (char *string, char *control) 
+{
+  register int count = 0;
+  register char ch;
+  
+  while (ch = *string)
+    {
+      if (strchr (control, ch))
+        break;
+      else
+        count++ ;
+      string++;
+    }
+
+  return count;
+}
diff --git a/device/lib/pic16/libc/string/strlen.c b/device/lib/pic16/libc/string/strlen.c
new file mode 100644
index 0000000..1bcdd19
--- /dev/null
+++ b/device/lib/pic16/libc/string/strlen.c
@@ -0,0 +1,40 @@
+/*-------------------------------------------------------------------------
+   strlen.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+int
+strlen (char *str) 
+{
+  register int i = 0 ;
+
+  while (*str++)
+    i++;
+
+  return i;
+}
diff --git a/device/lib/pic16/libc/string/strlwr.c b/device/lib/pic16/libc/string/strlwr.c
new file mode 100644
index 0000000..169a623
--- /dev/null
+++ b/device/lib/pic16/libc/string/strlwr.c
@@ -0,0 +1,44 @@
+/*-------------------------------------------------------------------------
+   strlwr.c - part of string library functions
+
+   Copyright (C)  2004, Vangelis Rokas <vrokas at otenet.gr>
+
+   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 <ctype.h>
+#include <string.h>
+
+char *
+strlwr (char *str) 
+{
+  char *ret = str;
+
+  while (*str)
+    {
+      *str = tolower (*str);
+      str++;
+    }
+
+  return ret;
+}
diff --git a/device/lib/pic16/libc/string/strncat.c b/device/lib/pic16/libc/string/strncat.c
new file mode 100644
index 0000000..77693f4
--- /dev/null
+++ b/device/lib/pic16/libc/string/strncat.c
@@ -0,0 +1,47 @@
+/*-------------------------------------------------------------------------
+   strncat.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+char *
+strncat (char *front, char * back, size_t count) 
+{
+  char *start = front;
+
+  while (*front++)
+    ;
+    
+  front--;
+  while (count--)
+    if (!(*front++ = *back++))
+      return start;
+
+    *front = '\0';
+
+  return start;
+}
diff --git a/device/lib/pic16/libc/string/strncmp.c b/device/lib/pic16/libc/string/strncmp.c
new file mode 100644
index 0000000..2778911
--- /dev/null
+++ b/device/lib/pic16/libc/string/strncmp.c
@@ -0,0 +1,44 @@
+/*-------------------------------------------------------------------------
+   strncmp.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+int
+strncmp (char *first, char *last, size_t count) 
+{
+  if (!count)
+    return 0;
+
+  while (--count && *first && *first == *last)
+    {
+      first++;
+      last++;
+    }
+
+  return *first - *last;
+}
diff --git a/device/lib/pic16/libc/string/strncpy.c b/device/lib/pic16/libc/string/strncpy.c
new file mode 100644
index 0000000..d7cce67
--- /dev/null
+++ b/device/lib/pic16/libc/string/strncpy.c
@@ -0,0 +1,48 @@
+/*-------------------------------------------------------------------------
+   strncpy.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+char *
+strncpy (char *d, char *s, size_t n)
+{
+  register char *d1 = d;
+
+  while (n && *s)
+  {
+    n--;
+    *d1++ = *s++;
+  }
+
+  while (n--)
+  {
+    *d1++ = '\0';
+  }
+
+  return d;
+}
diff --git a/device/lib/pic16/libc/string/strpbrk.c b/device/lib/pic16/libc/string/strpbrk.c
new file mode 100644
index 0000000..c3451c8
--- /dev/null
+++ b/device/lib/pic16/libc/string/strpbrk.c
@@ -0,0 +1,43 @@
+/*-------------------------------------------------------------------------
+   strpbrk.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+char *
+strpbrk (char *string, char *control) 
+{
+  register char ch;
+
+  while(ch = *string)
+    {
+      if (strchr (control, ch))
+        return string;
+    }
+
+  return NULL;
+}
diff --git a/device/lib/pic16/libc/string/strrchr.c b/device/lib/pic16/libc/string/strrchr.c
new file mode 100644
index 0000000..c543c96
--- /dev/null
+++ b/device/lib/pic16/libc/string/strrchr.c
@@ -0,0 +1,49 @@
+/*-------------------------------------------------------------------------
+   strrchr.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+char *
+strrchr (char *string, char ch) 
+{
+  register char *s = string;
+
+  /* find end of string */
+  while (*s++)
+    ;
+    
+  /* search towards front */
+  while (--s != string && *s != ch)
+      ;
+
+  /* char found ? */
+  if (*s == ch)
+    return s;
+
+  return NULL;
+}
diff --git a/device/lib/pic16/libc/string/strspn.c b/device/lib/pic16/libc/string/strspn.c
new file mode 100644
index 0000000..e3af1a3
--- /dev/null
+++ b/device/lib/pic16/libc/string/strspn.c
@@ -0,0 +1,48 @@
+/*-------------------------------------------------------------------------
+   strspn.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+int
+strspn (char *string, char *control) 
+{
+  register int count = 0;
+  register char ch;
+
+  while (ch = *string)
+    {
+      if (strchr (control, ch))
+        ++count;
+      else
+        break;
+      
+      ++string;
+    }
+
+  return count;
+}
diff --git a/device/lib/pic16/libc/string/strstr.c b/device/lib/pic16/libc/string/strstr.c
new file mode 100644
index 0000000..c99f847
--- /dev/null
+++ b/device/lib/pic16/libc/string/strstr.c
@@ -0,0 +1,57 @@
+/*-------------------------------------------------------------------------
+   strstr.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+char *
+strstr (char *str1, char *str2) 
+{
+  char *cp = str1;
+  char *s1;
+  char *s2;
+
+    
+  if (!*str2)
+    return str1;
+
+  while (*cp)
+    {
+      s1 = cp;
+      s2 = str2;
+
+      while (*s1 && *s2 && !(*s1-*s2))
+        s1++, s2++;
+      
+      if (!*s2)
+        return cp;
+
+      ++cp;
+    }
+
+  return NULL;
+}
diff --git a/device/lib/pic16/libc/string/strtok.c b/device/lib/pic16/libc/string/strtok.c
new file mode 100644
index 0000000..f9cbdd0
--- /dev/null
+++ b/device/lib/pic16/libc/string/strtok.c
@@ -0,0 +1,69 @@
+/*-------------------------------------------------------------------------
+   strtok.c - part of string library functions
+
+   Copyright (C) 1999, Sandeep Dutta <sandeep.dutta at usa.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>
+
+char *
+strtok (char *str, char *control) 
+{
+  static char *s = NULL;
+  register char *s1;
+
+  if (str)
+    s = str;
+
+  if (!s)
+    return NULL;
+
+  while (*s)
+    {
+      if (strchr (control, *s))
+        s++;
+      else
+        break;
+    }
+	
+  s1 = s;
+
+  while (*s)
+    {
+      if (strchr (control, *s))
+        {
+          *s = '\0';
+          return s1;
+        }
+      ++s;
+    }
+
+  s = NULL;
+
+  if (*s1)
+    return s1;
+  else
+    return NULL;
+}
diff --git a/device/lib/pic16/libc/string/strupr.c b/device/lib/pic16/libc/string/strupr.c
new file mode 100644
index 0000000..4010372
--- /dev/null
+++ b/device/lib/pic16/libc/string/strupr.c
@@ -0,0 +1,44 @@
+/*-------------------------------------------------------------------------
+   strupr.c - part of string library functions
+
+   Copyright (C) 2004, Vangelis Rokas <vrokas at otenet.gr>
+
+   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 <ctype.h>
+#include <string.h>
+
+char *
+strupr (char *str) 
+{
+  char *ret = str;
+
+  while (*str)
+    {
+      *str = toupper (*str);
+      ++str;
+    }
+
+  return ret;
+}