zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libpthread/linuxthreads.old/sysdeps/xtensa/pt-machine.h b/ap/build/uClibc/libpthread/linuxthreads.old/sysdeps/xtensa/pt-machine.h
new file mode 100644
index 0000000..acd4d10
--- /dev/null
+++ b/ap/build/uClibc/libpthread/linuxthreads.old/sysdeps/xtensa/pt-machine.h
@@ -0,0 +1,48 @@
+/* Machine-dependent pthreads configuration and inline functions.
+ Xtensa version.
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#ifndef _PT_MACHINE_H
+#define _PT_MACHINE_H 1
+
+#include <sys/syscall.h>
+#include <asm/unistd.h>
+
+#ifndef PT_EI
+# define PT_EI __extern_always_inline
+#endif
+
+/* Memory barrier. */
+#define MEMORY_BARRIER() __asm__ ("memw" : : : "memory")
+
+/* Spinlock implementation; required. */
+PT_EI long int
+testandset (int *spinlock)
+{
+ int unused = 0;
+ return INTERNAL_SYSCALL (xtensa, , 4, SYS_XTENSA_ATOMIC_SET,
+ spinlock, 1, unused);
+}
+
+/* Get some notion of the current stack. Need not be exactly the top
+ of the stack, just something somewhere in the current frame. */
+#define CURRENT_STACK_FRAME __builtin_frame_address (0)
+
+#endif /* _PT_MACHINE_H */