1 /* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
19 /* Default stack size. */
20 #define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024)
22 /* Required stack pointer alignment at beginning. SSE requires 16
24 #define STACK_ALIGN 16
26 /* Minimal stack size after allocating thread descriptor and guard size. */
27 #define MINIMAL_REST_STACK 2048
29 /* Alignment requirement for TCB. */
30 #define TCB_ALIGNMENT 16
33 /* Location of current stack frame. The frame pointer is not usable. */
34 #define CURRENT_STACK_FRAME \
35 ({ char *frame; __asm__ ("movq %%rsp, %0" : "=r" (frame)); frame; })
38 /* XXX Until we have a better place keep the definitions here. */
40 /* While there is no such syscall. */
41 #define __exit_thread_inline(val) \
42 __asm__ __volatile__ ("syscall" :: "a" (__NR_exit), "D" (val))