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- /* Copyright (C) 2002, 2003 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) \
- mmap (NULL, size, PROT_READ | PROT_WRITE | PROT_EXEC, \
- 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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