or1k: add missing file

libpthread/linuxthreads.old/sysdeps/or1k/pt-machine.h

@@ -0,0 +1,55 @@
+/* Machine-dependent pthreads configuration and inline functions.
+   OpenRISC version.
+   Copyright (C) 2001, 2002, 2003 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; 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>
+#include <sys/syscall.h>
+
+#ifndef PT_EI
+# define PT_EI __extern_always_inline
+#endif
+
+PT_EI long int testandset(int*);
+
+#define OR1K_ATOMIC_XCHG 1
+
+PT_EI long int
+testandset (int *spinlock)
+{
+	int err;
+	int oldvalue = 1;
+
+	err = INLINE_SYSCALL(or1k_atomic, 3, OR1K_ATOMIC_XCHG, spinlock, &oldvalue);
+
+	return (oldvalue);
+}
+
+/* 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()
+static inline char *stack_pointer(void)
+{
+	unsigned long ret;
+	__asm__ __volatile__ ("l.ori %0, r1, 0" : "=r" (ret));
+	return (char *)ret;
+}
+#endif /* pt-machine.h */