pthreads.subproj/stack.s

   1 /*
   2  * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991
   3  *              All Rights Reserved
   4  *
   5  * Permission to use, copy, modify, and distribute this software and
   6  * its documentation for any purpose and without fee is hereby granted,
   7  * provided that the above copyright notice appears in all copies and
   8  * that both the copyright notice and this permission notice appear in
   9  * supporting documentation.
  10  *
  11  * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
  12  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  13  * FOR A PARTICULAR PURPOSE.
  14  *
  15  * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
  16  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  17  * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
  18  * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
  19  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  20  *
  21  */
  22 /*
  23  * MkLinux
  24  */
  25
  26 .text
  27
  28 #if defined(__ppc__)
  29 #import <architecture/ppc/asm_help.h>
  30 #import <architecture/ppc/pseudo_inst.h>
  31
  32 /*
  33  * void *_sp(void)
  34  */
  35
  36 LEAF(__sp)
  37         mr      r3,r1
  38         blr
  39
  40 /*
  41  * void *_adjust_sp(void *sp)
  42  */
  43 LEAF(__adjust_sp)
  44         subi    r3,r3,0x100             /* Stack frame padding */
  45         blr
  46
  47 #elif defined(__i386__)
  48
  49 #import <architecture/i386/asm_help.h>
  50 /*
  51  * void *_sp(void)
  52  */
  53
  54 LEAF(__sp,0)
  55         movl    %esp,%eax
  56         ret
  57
  58 /*
  59  * void *_adjust_sp(void *sp)
  60  */
  61 LEAF(__adjust_sp,0)
  62         movl    4(%esp),%eax
  63         subl    $0x100,%eax
  64         ret
  65
  66 #else
  67 #error sp functions not defined for this architecture
  68 #endif
  69