1 files changed, 128 insertions, 0 deletions
diff --git a/include/asm-frv/system.h b/include/asm-frv/system.h
new file mode 100644
index 00000000000..d2aea70a5f6
--- /dev/null
+++ b/include/asm-frv/system.h
@@ -0,0 +1,128 @@
+/* system.h: FR-V CPU control definitions
+ *
+ * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_SYSTEM_H
+#define _ASM_SYSTEM_H
+
+#include <linux/config.h> /* get configuration macros */
+#include <linux/linkage.h>
+#include <asm/atomic.h>
+
+struct thread_struct;
+
+#define prepare_to_switch()    do { } while(0)
+
+/*
+ * switch_to(prev, next) should switch from task `prev' to `next'
+ * `prev' will never be the same as `next'.
+ * The `mb' is to tell GCC not to cache `current' across this call.
+ */
+extern asmlinkage
+struct task_struct *__switch_to(struct thread_struct *prev_thread,
+				struct thread_struct *next_thread,
+				struct task_struct *prev);
+
+#define switch_to(prev, next, last)					\
+do {									\
+	(prev)->thread.sched_lr =					\
+		(unsigned long) __builtin_return_address(0);		\
+	(last) = __switch_to(&(prev)->thread, &(next)->thread, (prev));	\
+	mb();								\
+} while(0)
+
+/*
+ * interrupt flag manipulation
+ */
+#define local_irq_disable()				\
+do {							\
+	unsigned long psr;				\
+	asm volatile("	movsg	psr,%0		\n"	\
+		     "	andi	%0,%2,%0	\n"	\
+		     "	ori	%0,%1,%0	\n"	\
+		     "	movgs	%0,psr		\n"	\
+		     : "=r"(psr)			\
+		     : "i" (PSR_PIL_14), "i" (~PSR_PIL)	\
+		     : "memory");			\
+} while(0)
+
+#define local_irq_enable()				\
+do {							\
+	unsigned long psr;				\
+	asm volatile("	movsg	psr,%0		\n"	\
+		     "	andi	%0,%1,%0	\n"	\
+		     "	movgs	%0,psr		\n"	\
+		     : "=r"(psr)			\
+		     : "i" (~PSR_PIL)			\
+		     : "memory");			\
+} while(0)
+
+#define local_save_flags(flags)			\
+do {						\
+	typecheck(unsigned long, flags);	\
+	asm("movsg psr,%0"			\
+	    : "=r"(flags)			\
+	    :					\
+	    : "memory");			\
+} while(0)
+
+#define	local_irq_save(flags)				\
+do {							\
+	unsigned long npsr;				\
+	typecheck(unsigned long, flags);		\
+	asm volatile("	movsg	psr,%0		\n"	\
+		     "	andi	%0,%3,%1	\n"	\
+		     "	ori	%1,%2,%1	\n"	\
+		     "	movgs	%1,psr		\n"	\
+		     : "=r"(flags), "=r"(npsr)		\
+		     : "i" (PSR_PIL_14), "i" (~PSR_PIL)	\
+		     : "memory");			\
+} while(0)
+
+#define	local_irq_restore(flags)			\
+do {							\
+	typecheck(unsigned long, flags);		\
+	asm volatile("	movgs	%0,psr		\n"	\
+		     :					\
+		     : "r" (flags)			\
+		     : "memory");			\
+} while(0)
+
+#define irqs_disabled() \
+	((__get_PSR() & PSR_PIL) >= PSR_PIL_14)
+
+/*
+ * Force strict CPU ordering.
+ */
+#define nop()			asm volatile ("nop"::)
+#define mb()			asm volatile ("membar" : : :"memory")
+#define rmb()			asm volatile ("membar" : : :"memory")
+#define wmb()			asm volatile ("membar" : : :"memory")
+#define set_mb(var, value)	do { var = value; mb(); } while (0)
+#define set_wmb(var, value)	do { var = value; wmb(); } while (0)
+
+#define smp_mb()		mb()
+#define smp_rmb()		rmb()
+#define smp_wmb()		wmb()
+
+#define read_barrier_depends()		do {} while(0)
+#define smp_read_barrier_depends()	read_barrier_depends()
+
+#define HARD_RESET_NOW()			\
+do {						\
+	cli();					\
+} while(1)
+
+extern void die_if_kernel(const char *, ...) __attribute__((format(printf, 1, 2)));
+extern void free_initmem(void);
+
+#define arch_align_stack(x) (x)
+
+#endif /* _ASM_SYSTEM_H */