zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libpthread/linuxthreads.old/sysdeps/bfin/pt-machine.h b/ap/build/uClibc/libpthread/linuxthreads.old/sysdeps/bfin/pt-machine.h
new file mode 100644
index 0000000..e81ecff
--- /dev/null
+++ b/ap/build/uClibc/libpthread/linuxthreads.old/sysdeps/bfin/pt-machine.h
@@ -0,0 +1,76 @@
+/* Machine-dependent pthreads configuration and inline functions.
+ Copyright (C) 1996, 1998, 2000, 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson <rth@tamu.edu>.
+
+ 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; see the file COPYING.LIB. If
+ not, write to the Free Software Foundation, Inc.,
+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#ifndef _PT_MACHINE_H
+#define _PT_MACHINE_H 1
+
+#include <features.h>
+
+#ifndef PT_EI
+# define PT_EI __extern_always_inline
+#endif
+
+#include <asm/fixed_code.h>
+
+/* Spinlock implementation; required. */
+/* The semantics of the TESTSET instruction cannot be guaranteed. We cannot
+ easily move all locks used by linux kernel to non-cacheable memory.
+ EXCPT 0x4 is used to trap into kernel to do the atomic testandset.
+ It's ugly. But it's the only thing we can do now.
+ The handler of EXCPT 0x4 expects the address of the lock is passed through
+ R0. And the result is returned by R0. */
+PT_EI long int
+testandset (int *spinlock)
+{
+ long int res;
+
+ __asm__ __volatile__ (
+ "CALL (%4);"
+ : "=q0" (res), "=m" (*spinlock)
+ : "qA" (spinlock), "m" (*spinlock), "a" (ATOMIC_XCHG32), "q1" (1)
+ : "RETS", "cc", "memory");
+
+ return res;
+}
+
+#define HAS_COMPARE_AND_SWAP
+PT_EI int
+__compare_and_swap (long int *p, long int oldval, long int newval)
+{
+ long int readval;
+ __asm__ __volatile__ (
+ "CALL (%5);"
+ : "=q0" (readval), "=m" (*p)
+ : "qA" (p),
+ "q1" (oldval),
+ "q2" (newval),
+ "a" (ATOMIC_CAS32),
+ "m" (*p)
+ : "RETS", "memory", "cc");
+ return readval == oldval;
+}
+
+#ifdef SHARED
+# define PTHREAD_STATIC_FN_REQUIRE(name)
+#else
+# define PTHREAD_STATIC_FN_REQUIRE(name) __asm__ (".globl " "_"#name);
+#endif
+
+#endif /* pt-machine.h */