Update.

	* sysdeps/s390/bits/string.h: New unified 31/64 bit string.h.
	* sysdeps/s390/s390-32/bits/string.h: Remove.
	* sysdeps/s390/s390-64/bits/string.h: Remove.
	* sysdeps/s390/s390-32/strcmp.S: New file.
	* sysdeps/s390/s390-64/strcmp.S: New file.

2001-03-27  Martin Schwidefsky  <schwidefsky@de.ibm.com>

1 files changed, 231 insertions, 0 deletions

diff --git a/sysdeps/s390/bits/string.h b/sysdeps/s390/bits/string.h
new file mode 100644
index 0000000000..0a477c0f1b
--- /dev/null
+++ b/sysdeps/s390/bits/string.h
@@ -0,0 +1,231 @@
+/* Optimized, inlined string functions.  S/390 version.
+   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+   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
+
+/* The s390 processors can access unaligned multi-byte variables.  */
+#define _STRING_ARCH_unaligned	1
+
+/* We only provide optimizations if the user selects them and if
+   GNU CC is used.  */
+#if !defined __NO_STRING_INLINES && defined __USE_STRING_INLINES \
+    && defined __GNUC__ && __GNUC__ >= 2
+
+#ifndef __STRING_INLINE
+# ifdef __cplusplus
+#  define __STRING_INLINE inline
+# else
+#  define __STRING_INLINE extern __inline
+# endif
+#endif
+
+#define _HAVE_STRING_ARCH_strlen 1
+#ifndef _FORCE_INLINES
+__STRING_INLINE size_t
+strlen (__const char *__str)
+{
+    char *__ptr, *__tmp;
+
+    __ptr = (char *) 0;
+    __tmp = (char *) __str;
+    __asm__ __volatile__ ("   la    0,0\n"
+			  "0: srst  %0,%1\n"
+			  "   jo    0b\n"
+			  : "+&a" (__ptr), "+&a" (__tmp) : 
+			  : "cc", "0" );
+    return (size_t) (__ptr - __str);
+}
+#endif
+
+/* Copy SRC to DEST.  */
+#define _HAVE_STRING_ARCH_strcpy 1
+#ifndef _FORCE_INLINES
+__STRING_INLINE char *
+strcpy (char *__dest, __const char *__src)
+{
+    char *tmp = __dest;
+
+    __asm__ __volatile__ ("   la    0,0\n"
+			  "0: mvst  %0,%1\n"
+			  "   jo    0b"
+			  : "+&a" (__dest), "+&a" (__src) :
+			  : "cc", "memory", "0" );
+    return tmp;
+}
+#endif
+
+#define _HAVE_STRING_ARCH_strncpy 1
+#ifndef _FORCE_INLINES
+__STRING_INLINE char *
+strncpy (char *__dest, __const char *__src, size_t __n)
+{
+    char *__ret = __dest;
+    char *__ptr;
+    size_t __diff;
+
+    if (__n > 0) {
+      __diff = (size_t) (__dest - __src);
+      __ptr = (char *) __src;
+      __asm__ __volatile__ ("   j     1f\n"
+                            "0: la    %0,1(%0)\n"
+                            "1: icm   0,1,0(%0)\n"
+                            "   stc   0,0(%2,%0)\n"
+                            "   jz    3f\n"
+#if defined(__s390x__)
+                            "   brctg %1,0b\n"
+#else
+                            "   brct  %1,0b\n"
+#endif
+                            "   j     4f\n"
+                            "2: la    %0,1(%0)\n"
+                            "   stc   0,0(%2,%0)\n"
+#if defined(__s390x__)
+                            "3: brctg %1,2b\n"
+#else
+                            "3: brct  %1,2b\n"
+#endif
+                            "4:"
+                            : "+&a" (__ptr), "+&a" (__n) : "a" (__diff)
+                            : "cc", "0" );
+    }
+    return __ret;
+}
+#endif
+
+/* Append SRC onto DEST.  */
+#define _HAVE_STRING_ARCH_strcat 1
+#ifndef _FORCE_INLINES
+__STRING_INLINE char *
+strcat(char *__dest, const char *__src)
+{
+    char *__ret = __dest;
+    char *__ptr, *__tmp;
+
+    /* Move __ptr to the end of __dest.  */
+    __ptr = (char *) 0;
+    __tmp = __dest;
+    __asm__ __volatile__ ("   la    0,0\n"
+			  "0: srst  %0,%1\n"
+			  "   jo    0b\n"
+			  : "+&a" (__ptr), "+&a" (__tmp) :
+			  : "cc", "0" );
+
+    /* Now do the copy.  */
+    __asm__ __volatile__ ("   la    0,0\n"
+			  "0: mvst  %0,%1\n"
+			  "   jo    0b"
+			  : "+&a" (__ptr), "+&a" (__src) :
+			  : "cc", "0" );
+    return __ret;
+}
+#endif
+
+/* Append no more than N characters from SRC onto DEST.  */
+#define _HAVE_STRING_ARCH_strncat 1
+#ifndef _FORCE_INLINES
+__STRING_INLINE char *
+strncat (char *__dest, __const char *__src, size_t __n)
+{
+    char *__ret = __dest;
+    char *__ptr, *__tmp;
+    size_t __diff;
+
+    if (__n > 0) {
+      /* Move __ptr to the end of __dest.  */
+      __ptr = (char *) 0;
+      __tmp = __dest;
+      __asm__ __volatile__ ("   la    0,0\n"
+			    "0: srst  %0,%1\n"
+			  "   jo    0b\n"
+			    : "+&a" (__ptr), "+&a" (__tmp) :
+			    : "cc", "0" );
+
+      __diff = (size_t) (__ptr - __src);
+      __tmp = (char *) __src;
+      __asm__ __volatile__ ("   j     1f\n"
+                            "0: la    %0,1(%0)\n"
+                            "1: icm   0,1,0(%0)\n"
+                            "   stc   0,0(%2,%0)\n"
+                            "   jz    2f\n"
+#if defined(__s390x__)
+                            "   brctg %1,0b\n"
+#else
+                            "   brct  %1,0b\n"
+#endif
+			    "   slr   0,0\n"
+                            "   stc   0,1(%2,%0)\n"
+			    "2:"
+                            : "+&a" (__tmp), "+&a" (__n) : "a" (__diff)
+                            : "cc", "0" );
+
+    }
+    return __ret;
+}
+#endif
+
+/* Search N bytes of S for C.  */
+#define _HAVE_STRING_ARCH_memchr 1
+#ifndef _FORCE_INLINES
+__STRING_INLINE void *
+memchr (__const void *__str, int __c, size_t __n)
+{
+    char *__ptr, *__tmp;
+
+    __tmp = (char *) __str;
+    __ptr = (char *) __tmp + __n;
+    __asm__ __volatile__ ("   lhi   0,0xff\n"
+			  "   nr    0,%2\n"
+			  "0: srst  %0,%1\n"
+			  "   jo    0b\n"
+                          "   brc   13,1f\n"
+                          "   la    %0,0\n"
+                          "1:"
+			  : "+&a" (__ptr), "+&a" (__tmp) : "d" (__c)
+			  : "cc", "0" );
+    return __ptr;
+}
+#endif
+
+/* Search N bytes of S for C.  */
+#define _HAVE_STRING_ARCH_memchr 1
+#ifndef _FORCE_INLINES
+__STRING_INLINE int
+strcmp (__const char *__s1, __const char *__s2)
+{
+    char *__p1, *__p2;
+    int __ret;
+
+    __p1 = (char *) __s1;
+    __p2 = (char *) __s2;
+    __asm__ __volatile__ ("   slr   0,0\n"
+                          "0: clst  %1,%2\n"
+			  "   jo    0b\n"
+			  "   ipm   %0\n"
+			  "   srl   %0,28"
+			  : "=d" (__ret), "+&a" (__p1), "+&a" (__p2) : 
+			  : "cc", "0" );
+    __ret = (__ret == 0) ? 0 : (__ret == 1) ? -1 : 1;
+    return __ret;
+}
+#endif
+
+#endif	/* Use string inlines && GNU CC.  */