nptl/sysdeps/i386/pthreaddef.h

   1 /* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 /* Default stack size.  */
  21 #define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024)
  22
  23 /* Required stack pointer alignment at beginning.  SSE requires 16
  24    bytes.  */
  25 #define STACK_ALIGN             16
  26
  27 /* Minimal stack size after allocating thread descriptor and guard size.  */
  28 #define MINIMAL_REST_STACK      2048
  29
  30 /* Alignment requirement for TCB.  */
  31 #define TCB_ALIGNMENT           16
  32
  33
  34 /* Location of current stack frame.  */
  35 #define CURRENT_STACK_FRAME     __builtin_frame_address (0)
  36
  37
  38 /* XXX Until we have a better place keep the definitions here.  */
  39
  40 /* While there is no such syscall.  */
  41 #define __exit_thread_inline(val) \
  42   while (1) {                                                                 \
  43     if (__builtin_constant_p (val) && (val) == 0)                             \
  44       asm volatile ("xorl %%ebx, %%ebx; int $0x80" :: "a" (__NR_exit));       \
  45     else                                                                      \
  46       asm volatile ("movl %1, %%ebx; int $0x80"                               \
  47                     :: "a" (__NR_exit), "r" (val));                           \
  48   }