x86_64/string/bcopy.s

   1 /*
   2  * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 /*
  25  * Call the comm page routines
  26  */
  27
  28 #define __APPLE_API_PRIVATE
  29 #include <machine/cpu_capabilities.h>
  30
  31 #include <architecture/i386/asm_help.h>
  32
  33         TEXT
  34         ALIGN
  35
  36 #if defined(MEMCOPY)
  37 LEAF(_memcpy,0)
  38         movq    $(_COMM_PAGE_MEMCPY), %rax
  39         jmp             *%rax
  40 #elif defined(MEMMOVE)
  41 LEAF(_memmove,0)
  42         movq    $(_COMM_PAGE_MEMMOVE), %rax
  43         jmp             *%rax
  44 #else
  45 LEAF(_bcopy,0)
  46         movq    $(_COMM_PAGE_BCOPY), %rax
  47         jmp             *%rax
  48 #endif