2009-09-28 Michael Eager <eager@eagercon.com>

        * configure.host: Add microblaze.
        * libc/include/machine/ieeefp.h [MICROBLAZE]: Define __IEEE_BIG_ENDIAN.
        * libc/include/machine/setjmp.h [MICROBLAZE]: Define _JBLEN, _JBTYPE.
        * libc/include/sys/config.h [MICROBLAZE]: Define _REENT_SMALL,
        _UNIX98_THREAD_MUTEX_ATTRIBUTES.
        * libc/include/sys/types.h: Treat XMK like rtems, define
        PTHREAD_MUTEX_NORMAL, PTHREAD_MUTEX_ERRORCHECK, PTHREAD_MUTEX_RECURSIVE,
        PTHREAD_MUTEX_DEFAULT, PTHREAD_STACK_MIN, define stuct pthread_attr_s.
        * libc/machine/configure.in: Add microblaze.
        * libc/machine/configure: Add microblaze (not regenerated).
        * libc/machine/microblaze/configure.in: NEW.
        * libc/machine/microblaze/configure: Generate.
        * libc/machine/microblaze/Makefile.am: NEW.
        * libc/machine/microblaze/Makefile.in: Generate.
        * libc/machine/microblaze/{abort.c, strcmp.c, strcpy.c, strlen.c,
        mallocr.c, longjmp.S, setjmp.S}: NEW.
        * libc/stdlib/mallocr.c [MICROBLAZE]: Don't declare sbrk prototype,
        mALLOc(): return malloc value.

1 files changed, 153 insertions, 0 deletions

diff --git a/newlib/libc/machine/microblaze/strlen.c b/newlib/libc/machine/microblaze/strlen.c
new file mode 100644
index 000000000..82eede86e
--- /dev/null
+++ b/newlib/libc/machine/microblaze/strlen.c
@@ -0,0 +1,153 @@
+/* Copyright (c) 2009 Xilinx, Inc.  All rights reserved. 
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+   
+   1.  Redistributions source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer. 
+   
+   2.  Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution. 
+   
+   3.  Neither the name of Xilinx nor the names of its contributors may be
+   used to endorse or promote products derived from this software without
+   specific prior written permission. 
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
+   IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+   TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+   PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+   TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  
+
+FUNCTION
+	<<strlen>>---character string length
+	
+INDEX
+	strlen
+
+ANSI_SYNOPSIS
+	#include <string.h>
+	size_t strlen(const char *<[str]>);
+
+TRAD_SYNOPSIS
+	#include <string.h>
+	size_t strlen(<[str]>)
+	char *<[src]>;
+
+DESCRIPTION
+	The <<strlen>> function works out the length of the string
+	starting at <<*<[str]>>> by counting chararacters until it
+	reaches a <<NULL>> character.
+
+RETURNS
+	<<strlen>> returns the character count.
+
+PORTABILITY
+<<strlen>> is ANSI C.
+
+<<strlen>> requires no supporting OS subroutines.
+
+QUICKREF
+	strlen ansi pure
+*/
+
+#include <_ansi.h>
+#include <string.h>
+#include <limits.h>
+
+#define LBLOCKSIZE   (sizeof (long))
+#define UNALIGNED(X) ((long)X & (LBLOCKSIZE - 1))
+
+#if LONG_MAX == 2147483647L
+#define DETECTNULL(X) (((X) - 0x01010101) & ~(X) & 0x80808080)
+#else
+#if LONG_MAX == 9223372036854775807L
+/* Nonzero if X (a long int) contains a NULL byte. */
+#define DETECTNULL(X) (((X) - 0x0101010101010101) & ~(X) & 0x8080808080808080)
+#else
+#error long int is not a 32bit or 64bit type.
+#endif
+#endif
+
+#ifndef DETECTNULL
+#error long int is not a 32bit or 64bit byte
+#endif
+
+size_t
+_DEFUN (strlen, (str),
+	_CONST char *str)
+{
+
+#ifndef HAVE_HW_PCMP
+
+#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
+  _CONST char *start = str;
+
+  while (*str)
+    str++;
+
+  return str - start;
+#else
+  _CONST char *start = str;
+  unsigned long *aligned_addr;
+
+  if (!UNALIGNED (str))
+    {
+      /* If the string is word-aligned, we can check for the presence of 
+         a null in each word-sized block.  */
+      aligned_addr = (unsigned long*)str;
+      while (!DETECTNULL (*aligned_addr))
+        aligned_addr++;
+
+      /* Once a null is detected, we check each byte in that block for a
+         precise position of the null.  */
+      str = (char*)aligned_addr;
+    }
+ 
+  while (*str)
+    str++;
+  return str - start;
+#endif /* not PREFER_SIZE_OVER_SPEED */
+
+#else
+
+  asm volatile ("                                               \n\
+        or      r9, r0, r0              /* Index register */    \n\
+check_alignment:                                                \n\
+        andi    r3, r5, 3                                       \n\
+        bnei    r3, align_arg                                   \n\
+len_loop:                                                       \n\
+        lw      r3, r5, r9                                      \n\
+        pcmpbf  r4, r3, r0                                      \n\
+        bnei    r4, end_len                                     \n\
+        brid    len_loop                                        \n\
+        addik   r9, r9, 4                                       \n\
+end_len:                                                        \n\
+        lbu     r3, r5, r9                                      \n\
+        beqi    r3, done_len                                    \n\
+        brid    end_len                                         \n\
+        addik   r9, r9, 1                                       \n\
+done_len:                                                       \n\
+        rtsd    r15, 8                                          \n\
+        or      r3, r0, r9              /* Return len */        \n\
+align_arg:                                                      \n\
+        rsubik  r10, r3, 4                                      \n\
+align_loop:                                                     \n\
+        lbu     r3, r5, r9                                      \n\
+        beqid   r3, done_len                                    \n\
+        addik   r10, r10, -1                                    \n\
+        bneid   r10, align_loop                                 \n\
+        addik   r9, r9, 1                                       \n\
+        bri     len_loop");
+
+#endif  /* ! HAVE_HW_PCMP */
+}