zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libpthread/linuxthreads.old/sysdeps/v850/pt-machine.h b/ap/build/uClibc/libpthread/linuxthreads.old/sysdeps/v850/pt-machine.h
new file mode 100644
index 0000000..34de63b
--- /dev/null
+++ b/ap/build/uClibc/libpthread/linuxthreads.old/sysdeps/v850/pt-machine.h
@@ -0,0 +1,52 @@
+/*
+ * sysdeps/v850/pt-machine.h -- v850-specific pthread definitions
+ *
+ * Copyright (C) 2002 NEC Electronics Corporation
+ * Copyright (C) 2002 Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License. See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#ifndef _PT_MACHINE_H
+#define _PT_MACHINE_H 1
+
+#include <features.h>
+
+#ifndef PT_EI
+# define PT_EI __extern_always_inline
+#endif
+
+/* 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 __stack_pointer
+register char *__stack_pointer __asm__ ("sp");
+
+#define HAS_COMPARE_AND_SWAP
+
+/* Atomically: If *PTR == OLD, set *PTR to NEW and return true,
+ otherwise do nothing and return false. */
+PT_EI int
+__compare_and_swap (long *ptr, long old, long new)
+{
+ unsigned long psw;
+
+ /* disable interrupts */
+ __asm__ __volatile__ ("stsr psw, %0; di" : "=&r" (psw));
+
+ if (likely (*ptr == old))
+ {
+ *ptr = new;
+ __asm__ __volatile__ ("ldsr %0, psw" :: "r" (psw)); /* re-enable */
+ return 1;
+ }
+ else
+ {
+ __asm__ __volatile__ ("ldsr %0, psw" :: "r" (psw)); /* re-enable */
+ return 0;
+ }
+}
+#endif /* pt-machine.h */