auto import from //depot/cupcake/@135843

1 files changed, 0 insertions, 128 deletions

diff --git a/libc/string/bcopy.c b/libc/string/bcopy.c
deleted file mode 100644
index 4308c6484..000000000
--- a/libc/string/bcopy.c
+++ /dev/null
@@ -1,128 +0,0 @@
-/*	$OpenBSD: bcopy.c,v 1.5 2005/08/08 08:05:37 espie Exp $ */
-/*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of 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 the University 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 REGENTS 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 REGENTS 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.
- */
-
-#include <string.h>
-
-/*
- * sizeof(word) MUST BE A POWER OF TWO
- * SO THAT wmask BELOW IS ALL ONES
- */
-typedef	long word;		/* "word" used for optimal copy speed */
-
-#define	wsize	sizeof(word)
-#define	wmask	(wsize - 1)
-
-/*
- * 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;
-	size_t t;
-
-	if (length == 0 || dst == src)		/* nothing to do */
-		goto done;
-
-	/*
-	 * Macros: loop-t-times; and loop-t-times, t>0
-	 */
-#define	TLOOP(s) if (t) TLOOP1(s)
-#define	TLOOP1(s) do { s; } while (--t)
-
-	if ((unsigned long)dst < (unsigned long)src) {
-		/*
-		 * Copy forward.
-		 */
-		t = (long)src;	/* only need low bits */
-		if ((t | (long)dst) & wmask) {
-			/*
-			 * Try to align operands.  This cannot be done
-			 * unless the low bits match.
-			 */
-			if ((t ^ (long)dst) & wmask || length < wsize)
-				t = length;
-			else
-				t = wsize - (t & wmask);
-			length -= t;
-			TLOOP1(*dst++ = *src++);
-		}
-		/*
-		 * Copy whole words, then mop up any trailing bytes.
-		 */
-		t = length / wsize;
-		TLOOP(*(word *)dst = *(word *)src; src += wsize; dst += wsize);
-		t = length & wmask;
-		TLOOP(*dst++ = *src++);
-	} else {
-		/*
-		 * Copy backwards.  Otherwise essentially the same.
-		 * Alignment works as before, except that it takes
-		 * (t&wmask) bytes to align, not wsize-(t&wmask).
-		 */
-		src += length;
-		dst += length;
-		t = (long)src;
-		if ((t | (long)dst) & wmask) {
-			if ((t ^ (long)dst) & wmask || length <= wsize)
-				t = length;
-			else
-				t &= wmask;
-			length -= t;
-			TLOOP1(*--dst = *--src);
-		}
-		t = length / wsize;
-		TLOOP(src -= wsize; dst -= wsize; *(word *)dst = *(word *)src);
-		t = length & wmask;
-		TLOOP(*--dst = *--src);
-	}
-done:
-#if defined(MEMCOPY) || defined(MEMMOVE)
-	return (dst0);
-#else
-	return;
-#endif
-}