1 files changed, 80 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/microblaze/pt-machine.h b/libpthread/linuxthreads/sysdeps/microblaze/pt-machine.h
new file mode 100644
index 000000000..2184c9236
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/microblaze/pt-machine.h
@@ -0,0 +1,80 @@
+/*
+ * sysdeps/microblaze/pt-machine.h -- microblaze-specific pthread definitions
+ *
+ *  Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au>
+ *  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.
+ *
+ */
+
+#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__ ("r1");
+
+#define HAS_COMPARE_AND_SWAP
+#define HAS_COMPARE_AND_SWAP_WITH_RELEASE_SEMANTICS
+#define MEMORY_BARRIER() __asm__ __volatile__("": : :"memory")
+
+/* 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)
+{
+  long prev, cmp, retval;
+  __asm__ __volatile__ ("         addi    %2, r0, 0;"
+                        "1:       lwx     %0, %3, r0;"
+                        "         cmp     %1, %0, %4;"
+                        "         bnei    %1, 2f;"
+                        "         swx     %5, %3, r0;"
+                        "         addic   %1, r0, 0;"
+                        "         bnei    %1, 1b;"
+                        "         addi    %2, r0, 1;"
+                        "2:"
+                        : "=&r" (prev), "=&r" (cmp), "=&r" (retval)
+                        : "r" (ptr), "r" (old), "r" (new)
+                        : "cc", "memory");
+
+  return retval;
+}
+
+PT_EI int
+__compare_and_swap_with_release_semantics (long *p,
+					   long oldval, long newval)
+{
+  MEMORY_BARRIER();
+  return __compare_and_swap (p, oldval, newval);
+}
+
+/* Spinlock implementation; required.  */ 
+PT_EI long int testandset (int *spinlock)
+{
+  long int retval;
+
+  __asm__ __volatile__ ("1:       lwx     %0, %1, r0;"
+                        "         bnei    %0, 2f;"
+                        "         addik   %0, r0, 1;"
+                        "         swx     %0, %1, r0;"
+                        "         addic   %0, r0, 0;"
+                        "         bnei    %0, 1b;"
+                        "2:"
+                        : "=&r" (retval)
+                        : "r" (spinlock)
+                        : "cc", "memory");
+
+  return retval;
+}
+
+#endif /* pt-machine.h */