summaryrefslogtreecommitdiffstats
path: root/lib/libc/i386/string/bcopy.S
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libc/i386/string/bcopy.S')
-rw-r--r--lib/libc/i386/string/bcopy.S103
1 files changed, 0 insertions, 103 deletions
diff --git a/lib/libc/i386/string/bcopy.S b/lib/libc/i386/string/bcopy.S
deleted file mode 100644
index d2a571e..0000000
--- a/lib/libc/i386/string/bcopy.S
+++ /dev/null
@@ -1,103 +0,0 @@
-/*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from locore.s.
- *
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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 <machine/asm.h>
-
- RCSID("$NetBSD: bcopy.S,v 1.6 1996/11/12 00:50:06 jtc Exp $")
-
- /*
- * (ov)bcopy (src,dst,cnt)
- * ws@tools.de (Wolfgang Solfrank, TooLs GmbH) +49-228-985800
- */
-
-#ifdef MEMCOPY
-ENTRY(memcpy)
-#else
-#ifdef MEMMOVE
-ENTRY(memmove)
-#else
-ENTRY(bcopy)
-#endif
-#endif
- pushl %esi
- pushl %edi
-#if defined(MEMCOPY) || defined(MEMMOVE)
- movl 12(%esp),%edi
- movl 16(%esp),%esi
-#else
- movl 12(%esp),%esi
- movl 16(%esp),%edi
-#endif
- movl 20(%esp),%ecx
- movl %edi,%eax
- subl %esi,%eax
- cmpl %ecx,%eax /* overlapping? */
- jb 1f
- cld /* nope, copy forwards. */
- shrl $2,%ecx /* copy by words */
- rep
- movsl
- movl 20(%esp),%ecx
- andl $3,%ecx /* any bytes left? */
- rep
- movsb
-#if defined(MEMCOPY) || defined(MEMMOVE)
- movl 12(%esp),%eax
-#endif
- popl %edi
- popl %esi
- ret
-1:
- addl %ecx,%edi /* copy backwards. */
- addl %ecx,%esi
- std
- andl $3,%ecx /* any fractional bytes? */
- decl %edi
- decl %esi
- rep
- movsb
- movl 20(%esp),%ecx /* copy remainder by words */
- shrl $2,%ecx
- subl $3,%esi
- subl $3,%edi
- rep
- movsl
-#if defined(MEMCOPY) || defined(MEMMOVE)
- movl 12(%esp),%eax
-#endif
- popl %edi
- popl %esi
- cld
- ret
OpenPOWER on IntegriCloud