Update.

1998-08-22  Philip Blundell  <philb@gnu.org>

	* sysdeps/arm/bits/string.h: New file.

1 files changed, 150 insertions, 0 deletions

diff --git a/sysdeps/arm/bits/string.h b/sysdeps/arm/bits/string.h
new file mode 100644
index 0000000000..8dce456f39
--- /dev/null
+++ b/sysdeps/arm/bits/string.h
@@ -0,0 +1,150 @@
+/* Optimized, inlined string functions.  ARM version.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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.  */
+
+#ifndef _STRING_H
+# error "Never use <bits/string.h> directly; include <string.h> instead."
+#endif
+
+/* We must defeat the generic optimized versions of these functions in
+   <bits/string2.h> since they don't work on the ARM.  */
+#define _HAVE_STRING_ARCH_strcpy 1
+#define _HAVE_STRING_ARCH_stpcpy 1
+
+/* We only provide optimizations if GNU CC is used and this is a little
+   endian system (the code below does not work on big endian machines).
+   With current versions of GCC these optimi\ations produce quite a large
+   amount of code so we only enable them if the user specifically asked
+   for it.  */
+#if !defined __NO_STRING_INLINES && defined __GNUC__ && __GNUC__ >= 2 \
+ && !defined __ARMEB__ && defined __USE_STRING_INLINES
+
+/* Copy SRC to DEST.  */
+#define strcpy(dest, src) \
+  (__extension__ (__builtin_constant_p (src)				      \
+		  ? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8	      \
+		     ? __strcpy_small (dest, src, strlen (src) + 1)	      \
+		     : (char *) memcpy (dest, src, strlen (src) + 1))	      \
+		  : strcpy (dest, src)))
+
+#define __strcpy_small(dest, src, srclen) \
+  (__extension__ ({ char *__dest = (char *) (dest);			      \
+		    const char *__src = (const char *) (src);		      \
+		    size_t __srclen = (srclen);				      \
+		    switch (__srclen)					      \
+		      {							      \
+		      case 5:						      \
+			*((unsigned long int *) __dest) =		      \
+			     *((const unsigned long int *) (__src));	      \
+			__dest += 4;					      \
+			__src += 4;					      \
+		      case 1:						      \
+			*__dest++ = '\0';				      \
+			break;						      \
+		      case 6:						      \
+			*((unsigned long int *) __dest) =		      \
+			     *((const unsigned long int *) (__src));	      \
+			__dest += 4;					      \
+			__src += 4;					      \
+		      case 2:						      \
+			*((unsigned short int *) __dest) =		      \
+			     __src[0];					      \
+			__dest += 2;					      \
+			break;						      \
+		      case 7:						      \
+			*((unsigned long int *) __dest) =		      \
+			     *((const unsigned long int *) (__src));	      \
+			__dest += 4;					      \
+			__src += 4;					      \
+		      case 3:						      \
+			*((unsigned short int *) __dest) =		      \
+			     *((const unsigned short int *) (__src));	      \
+			__dest[2] = '\0';				      \
+			__dest += 3;					      \
+			break;						      \
+		      case 8:						      \
+			*((unsigned long int *) __dest) =		      \
+			     *((const unsigned long int *) (__src));	      \
+			__dest += 4;					      \
+  			__src += 4;					      \
+		      case 4:						      \
+			*((unsigned long int *) __dest) =		      \
+			     *((const unsigned short int *) (__src)) |	      \
+		             (__src[2] << 16);				      \
+			__dest += 4;					      \
+			break;						      \
+		    }							      \
+		  (__dest - __srclen) ; }))
+
+/* Copy SRC to DEST, returning pointer to final NUL byte.  */
+#define __stpcpy(dest, src) \
+  (__extension__ (__builtin_constant_p (src)				      \
+		  ? (__string2_1bptr_p (src) && strlen (src) + 1 <= 8	      \
+		     ? __stpcpy_small (dest, src, strlen (src) + 1)	      \
+		     : ((char *) __mempcpy (dest, src, strlen (src) + 1) - 1))\
+		  : __stpcpy (dest, src)))
+
+#define __stpcpy_small(dest, src, srclen) \
+  (__extension__ ({ char *__dest = (char *) (dest);			      \
+		    const char *__src = (const char *) (src);		      \
+		    switch (srclen)					      \
+		      {							      \
+		      case 5:						      \
+			*((unsigned long int *) __dest) =		      \
+			     *((const unsigned long int *) (__src));	      \
+			__dest += 4;					      \
+			__src += 4;					      \
+		      case 1:						      \
+			*__dest++ = '\0';				      \
+			break;						      \
+		      case 6:						      \
+			*((unsigned long int *) __dest) =		      \
+			     *((const unsigned long int *) (__src));	      \
+			__dest += 4;					      \
+			__src += 4;					      \
+		      case 2:						      \
+			*((unsigned short int *) __dest) =		      \
+			     __src[0];					      \
+			__dest += 2;					      \
+			break;						      \
+		      case 7:						      \
+			*((unsigned long int *) __dest) =		      \
+			     *((const unsigned long int *) (__src));	      \
+			__dest += 4;					      \
+			__src += 4;					      \
+		      case 3:						      \
+			*((unsigned short int *) __dest) =		      \
+			     *((const unsigned short int *) (__src));	      \
+			__dest[2] = '\0';				      \
+			__dest += 3;					      \
+			break;						      \
+		      case 8:						      \
+			*((unsigned long int *) __dest) =		      \
+			     *((const unsigned long int *) (__src));	      \
+			__dest += 4;					      \
+			__src += 4;					      \
+		      case 4:						      \
+			*((unsigned long int *) __dest) =		      \
+			     *((const unsigned short int *) (__src)) |	      \
+		             (__src[2] << 16);				      \
+			__dest += 4;					      \
+			break;						      \
+		    }							      \
+		  __dest; }))
+
+#endif