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/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* Default stack size. */
#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024)
/* Required stack pointer alignment at beginning. SSE requires 16
bytes. */
#define STACK_ALIGN 16
/* Minimal stack size after allocating thread descriptor and guard size. */
#define MINIMAL_REST_STACK 2048
/* Alignment requirement for TCB. */
#define TCB_ALIGNMENT 16
/* Location of current stack frame. The frame pointer is not usable. */
#define CURRENT_STACK_FRAME \
({ char *frame; asm ("movq %%rsp, %0" : "=r" (frame)); frame; })
/* We prefer to have the stack allocated in the low 4GB since this
allows faster context switches. */
#define ARCH_MAP_FLAGS MAP_32BIT
/* If it is not possible to allocate memory there retry without that
flag. */
#define ARCH_RETRY_MMAP(size, prot) \
mmap (NULL, size, prot, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)
/* XXX Until we have a better place keep the definitions here. */
/* While there is no such syscall. */
#define __exit_thread_inline(val) \
asm volatile ("syscall" :: "a" (__NR_exit), "D" (val))
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