From c68d0fa2d88fc2134a38d99e7e944828384a7671 Mon Sep 17 00:00:00 2001 From: Austin Foxley Date: Sat, 17 Oct 2009 12:26:24 -0700 Subject: libpthread/nptl: core of the "Native Posix Threading Library" for uClibc targetting arm,sh,i386,mips,sparc for now Signed-off-by: Austin Foxley --- libpthread/nptl/sysdeps/x86_64/pthreaddef.h | 54 +++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 libpthread/nptl/sysdeps/x86_64/pthreaddef.h (limited to 'libpthread/nptl/sysdeps/x86_64/pthreaddef.h') diff --git a/libpthread/nptl/sysdeps/x86_64/pthreaddef.h b/libpthread/nptl/sysdeps/x86_64/pthreaddef.h new file mode 100644 index 000000000..27896a445 --- /dev/null +++ b/libpthread/nptl/sysdeps/x86_64/pthreaddef.h @@ -0,0 +1,54 @@ +/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 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)) -- cgit v1.2.3