1 files changed, 67 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/nios/pt-machine.h b/libpthread/linuxthreads/sysdeps/nios/pt-machine.h
new file mode 100644
index 000000000..91bbf8fea
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/nios/pt-machine.h
@@ -0,0 +1,67 @@
+/* Machine-dependent pthreads configuration and inline functions.
+   ARM version.
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Philip Blundell <philb@gnu.org>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _PT_MACHINE_H
+#define _PT_MACHINE_H   1
+
+#include <features.h>
+
+#ifndef PT_EI
+# define PT_EI __extern_always_inline
+#endif
+
+/* Spinlock implementation; required.  */
+/* it is weird and dangerous to disable interrupt in userspace, but for nios
+   what else we can do before we have a swap like instruction?  This is better
+   than nothing
+ */
+PT_EI long int
+testandset (int *spinlock)
+{
+  unsigned int ret;
+
+  __asm__ __volatile__("pfx 8\n\t"
+  			"wrctl %1	; disable interrupt\n\t"
+			"nop\n\t"
+			"nop\n\t"
+  			"ld %0, [%2]\n\t"
+  			"st [%2], %1\n\t"
+  			"pfx 9\n\t"
+  			"wrctl %1	; enable interrupt\n\t"
+			"nop\n\t"
+			"nop\n\t"
+ 		       : "=&r"(ret)
+		       : "r"(1), "r"(spinlock)
+		       : "memory");
+
+  return ret;
+}
+
+
+/* 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");
+
+/* nios needs more because of reg windows */
+#define THREAD_MANAGER_STACK_SIZE (32*1024)
+#define STACK_SIZE	(32*1024)
+
+#endif /* pt-machine.h */