pthreads/stack.s

   1 /*
   2  * Copyright (c) 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  * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991
  25  *              All Rights Reserved
  26  *
  27  * Permission to use, copy, modify, and distribute this software and
  28  * its documentation for any purpose and without fee is hereby granted,
  29  * provided that the above copyright notice appears in all copies and
  30  * that both the copyright notice and this permission notice appear in
  31  * supporting documentation.
  32  *
  33  * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
  34  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  35  * FOR A PARTICULAR PURPOSE.
  36  *
  37  * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
  38  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  39  * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
  40  * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
  41  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  42  *
  43  */
  44 /*
  45  * MkLinux
  46  */
  47
  48 .text
  49
  50 #if defined(__ppc__) || defined(__ppc64__)
  51 #import <architecture/ppc/asm_help.h>
  52 #import <architecture/ppc/pseudo_inst.h>
  53
  54 /*
  55  * void *_sp(void)
  56  */
  57
  58 LEAF(__sp)
  59         mr      r3,r1
  60         blr
  61
  62 /*
  63  * void *_adjust_sp(void *sp)
  64  */
  65 LEAF(__adjust_sp)
  66         subi    r3,r3,0x100             /* Stack frame padding */
  67         blr
  68
  69 #elif defined(__i386__)
  70
  71 #import <architecture/i386/asm_help.h>
  72 /*
  73  * void *_sp(void)
  74  */
  75
  76 LEAF(__sp,0)
  77         movl    %esp,%eax
  78         ret
  79
  80 /*
  81  * void *_adjust_sp(void *sp)
  82  */
  83 LEAF(__adjust_sp,0)
  84         movl    4(%esp),%eax
  85         subl    $0x100,%eax
  86         ret
  87
  88 #elif defined(__x86_64__)
  89
  90 #import <architecture/i386/asm_help.h>
  91 /*
  92  * void *_sp(void)
  93  */
  94
  95 LEAF(__sp,0)
  96         movq    %rsp,%rax
  97         ret
  98
  99 /*
 100  * void *_adjust_sp(void *sp)
 101  */
 102 LEAF(__adjust_sp,0)
 103         movq    %rdi,%rax
 104         subq    $0x100,%rax
 105         ret
 106
 107 #else
 108 #error sp functions not defined for this architecture
 109 #endif
 110