1 files changed, 39 insertions, 0 deletions

diff --git a/include/asm-sh/system_64.h b/include/asm-sh/system_64.h
new file mode 100644
index 000000000000..0e466e991f7d
--- /dev/null
+++ b/include/asm-sh/system_64.h
@@ -0,0 +1,39 @@
+#ifndef __ASM_SH_SYSTEM_64_H
+#define __ASM_SH_SYSTEM_64_H
+
+/*
+ * include/asm-sh/system_64.h
+ *
+ * Copyright (C) 2000, 2001  Paolo Alberelli
+ * Copyright (C) 2003  Paul Mundt
+ * Copyright (C) 2004  Richard Curnow
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <asm/processor.h>
+
+/*
+ *      switch_to() should switch tasks to task nr n, first
+ */
+struct task_struct *sh64_switch_to(struct task_struct *prev,
+                                   struct thread_struct *prev_thread,
+                                   struct task_struct *next,
+                                   struct thread_struct *next_thread);
+
+#define switch_to(prev,next,last)                               \
+do {                                                            \
+        if (last_task_used_math != next) {                      \
+                struct pt_regs *regs = next->thread.uregs;      \
+                if (regs) regs->sr |= SR_FD;                    \
+        }                                                       \
+        last = sh64_switch_to(prev, &prev->thread, next,        \
+                              &next->thread);                   \
+} while (0)
+
+/* No segmentation.. */
+#define jump_to_P2()    do { } while (0)
+#define back_to_P1()    do { } while (0)
+
+#endif /* __ASM_SH_SYSTEM_64_H */