restructure libc/string + libc/arch/*/string coperation regarding

(potentially) MD versions (function dependent, not filename dependent)
split out memcpy/memmove/bcopy and strchr/index/strrchr/rindex
Bring back amd64 .S versions

And the final touch: switch all architectures temporarily to MI
memcpy.c, which contains syslog + abort for overlapping copies.  A nice
harsh undefined behaviour.  We will clean the entire userland of the
remaining issues in this catagory, then switch to the optimised memcpy
which skips the memmove check.

I tried to cut this change into pieces, but testing each sub-step on
every architecture is too time consuming and mindnumbing.
ok miod

1 files changed, 1 insertions, 17 deletions

diff --git a/src/lib/libc/string/bcopy.c b/src/lib/libc/string/bcopy.c
index 4308c6484a..fcaa843c71 100644
--- a/src/lib/libc/string/bcopy.c
+++ b/src/lib/libc/string/bcopy.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: bcopy.c,v 1.5 2005/08/08 08:05:37 espie Exp $ */
+/*      $OpenBSD: bcopy.c,v 1.6 2014/11/30 19:43:56 deraadt Exp $ */
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -44,21 +44,9 @@ typedef	long word;		/* "word" used for optimal copy speed */
 
 /*
  * Copy a block of memory, handling overlap.
- * This is the routine that actually implements
- * (the portable versions of) bcopy, memcpy, and memmove.
  */
-#ifdef MEMCOPY
-void *
-memcpy(void *dst0, const void *src0, size_t length)
-#else
-#ifdef MEMMOVE
-void *
-memmove(void *dst0, const void *src0, size_t length)
-#else
 void
 bcopy(const void *src0, void *dst0, size_t length)
-#endif
-#endif
 {
         char *dst = dst0;
         const char *src = src0;
@@ -120,9 +108,5 @@ bcopy(const void *src0, void *dst0, size_t length)
                 TLOOP(*--dst = *--src);
         }
 done:
-#if defined(MEMCOPY) || defined(MEMMOVE)
-        return (dst0);
-#else
         return;
-#endif
 }