pthreads/stack.s

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991
  27  *              All Rights Reserved
  28  *
  29  * Permission to use, copy, modify, and distribute this software and
  30  * its documentation for any purpose and without fee is hereby granted,
  31  * provided that the above copyright notice appears in all copies and
  32  * that both the copyright notice and this permission notice appear in
  33  * supporting documentation.
  34  *
  35  * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
  36  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  37  * FOR A PARTICULAR PURPOSE.
  38  *
  39  * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
  40  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  41  * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
  42  * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
  43  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  44  *
  45  */
  46 /*
  47  * MkLinux
  48  */
  49
  50 .text
  51
  52 #if defined(__ppc__) || defined(__ppc64__)
  53 #import <architecture/ppc/asm_help.h>
  54 #import <architecture/ppc/pseudo_inst.h>
  55
  56 /*
  57  * void *_sp(void)
  58  */
  59
  60 LEAF(__sp)
  61         mr      r3,r1
  62         blr
  63
  64 /*
  65  * void *_adjust_sp(void *sp)
  66  */
  67 LEAF(__adjust_sp)
  68         subi    r3,r3,0x100             /* Stack frame padding */
  69         blr
  70
  71 #elif defined(__i386__)
  72
  73 #import <architecture/i386/asm_help.h>
  74 /*
  75  * void *_sp(void)
  76  */
  77
  78 LEAF(__sp,0)
  79         movl    %esp,%eax
  80         ret
  81
  82 /*
  83  * void *_adjust_sp(void *sp)
  84  */
  85 LEAF(__adjust_sp,0)
  86         movl    4(%esp),%eax
  87         subl    $0x100,%eax
  88         ret
  89
  90 #else
  91 #error sp functions not defined for this architecture
  92 #endif
  93