libpthread/nptl: core of the "Native Posix Threading Library" for uClibc

targetting arm,sh,i386,mips,sparc for now

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

1 files changed, 54 insertions, 0 deletions

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 <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))