dirty fix to merging

1 files changed, 275 insertions, 0 deletions

diff --git a/arch/m32r/include/asm/bitops.h b/arch/m32r/include/asm/bitops.h
new file mode 100644
index 00000000..d3dea9ac
--- /dev/null
+++ b/arch/m32r/include/asm/bitops.h
@@ -0,0 +1,275 @@
+#ifndef _ASM_M32R_BITOPS_H
+#define _ASM_M32R_BITOPS_H
+
+/*
+ *  linux/include/asm-m32r/bitops.h
+ *
+ *  Copyright 1992, Linus Torvalds.
+ *
+ *  M32R version:
+ *    Copyright (C) 2001, 2002  Hitoshi Yamamoto
+ *    Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
+ */
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
+#include <linux/compiler.h>
+#include <linux/irqflags.h>
+#include <asm/assembler.h>
+#include <asm/byteorder.h>
+#include <asm/dcache_clear.h>
+#include <asm/types.h>
+
+/*
+ * These have to be done with inline assembly: that way the bit-setting
+ * is guaranteed to be atomic. All bit operations return 0 if the bit
+ * was cleared before the operation and != 0 if it was not.
+ *
+ * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1).
+ */
+
+/**
+ * set_bit - Atomically set a bit in memory
+ * @nr: the bit to set
+ * @addr: the address to start counting from
+ *
+ * This function is atomic and may not be reordered.  See __set_bit()
+ * if you do not require the atomic guarantees.
+ * Note that @nr may be almost arbitrarily large; this function is not
+ * restricted to acting on a single-word quantity.
+ */
+static __inline__ void set_bit(int nr, volatile void * addr)
+{
+	__u32 mask;
+	volatile __u32 *a = addr;
+	unsigned long flags;
+	unsigned long tmp;
+
+	a += (nr >> 5);
+	mask = (1 << (nr & 0x1F));
+
+	local_irq_save(flags);
+	__asm__ __volatile__ (
+		DCACHE_CLEAR("%0", "r6", "%1")
+		M32R_LOCK" %0, @%1;		\n\t"
+		"or	%0, %2;			\n\t"
+		M32R_UNLOCK" %0, @%1;		\n\t"
+		: "=&r" (tmp)
+		: "r" (a), "r" (mask)
+		: "memory"
+#ifdef CONFIG_CHIP_M32700_TS1
+		, "r6"
+#endif	/* CONFIG_CHIP_M32700_TS1 */
+	);
+	local_irq_restore(flags);
+}
+
+/**
+ * clear_bit - Clears a bit in memory
+ * @nr: Bit to clear
+ * @addr: Address to start counting from
+ *
+ * clear_bit() is atomic and may not be reordered.  However, it does
+ * not contain a memory barrier, so if it is used for locking purposes,
+ * you should call smp_mb__before_clear_bit() and/or smp_mb__after_clear_bit()
+ * in order to ensure changes are visible on other processors.
+ */
+static __inline__ void clear_bit(int nr, volatile void * addr)
+{
+	__u32 mask;
+	volatile __u32 *a = addr;
+	unsigned long flags;
+	unsigned long tmp;
+
+	a += (nr >> 5);
+	mask = (1 << (nr & 0x1F));
+
+	local_irq_save(flags);
+
+	__asm__ __volatile__ (
+		DCACHE_CLEAR("%0", "r6", "%1")
+		M32R_LOCK" %0, @%1;		\n\t"
+		"and	%0, %2;			\n\t"
+		M32R_UNLOCK" %0, @%1;		\n\t"
+		: "=&r" (tmp)
+		: "r" (a), "r" (~mask)
+		: "memory"
+#ifdef CONFIG_CHIP_M32700_TS1
+		, "r6"
+#endif	/* CONFIG_CHIP_M32700_TS1 */
+	);
+	local_irq_restore(flags);
+}
+
+#define smp_mb__before_clear_bit()	barrier()
+#define smp_mb__after_clear_bit()	barrier()
+
+/**
+ * change_bit - Toggle a bit in memory
+ * @nr: Bit to clear
+ * @addr: Address to start counting from
+ *
+ * change_bit() is atomic and may not be reordered.
+ * Note that @nr may be almost arbitrarily large; this function is not
+ * restricted to acting on a single-word quantity.
+ */
+static __inline__ void change_bit(int nr, volatile void * addr)
+{
+	__u32  mask;
+	volatile __u32  *a = addr;
+	unsigned long flags;
+	unsigned long tmp;
+
+	a += (nr >> 5);
+	mask = (1 << (nr & 0x1F));
+
+	local_irq_save(flags);
+	__asm__ __volatile__ (
+		DCACHE_CLEAR("%0", "r6", "%1")
+		M32R_LOCK" %0, @%1;		\n\t"
+		"xor	%0, %2;			\n\t"
+		M32R_UNLOCK" %0, @%1;		\n\t"
+		: "=&r" (tmp)
+		: "r" (a), "r" (mask)
+		: "memory"
+#ifdef CONFIG_CHIP_M32700_TS1
+		, "r6"
+#endif	/* CONFIG_CHIP_M32700_TS1 */
+	);
+	local_irq_restore(flags);
+}
+
+/**
+ * test_and_set_bit - Set a bit and return its old value
+ * @nr: Bit to set
+ * @addr: Address to count from
+ *
+ * This operation is atomic and cannot be reordered.
+ * It also implies a memory barrier.
+ */
+static __inline__ int test_and_set_bit(int nr, volatile void * addr)
+{
+	__u32 mask, oldbit;
+	volatile __u32 *a = addr;
+	unsigned long flags;
+	unsigned long tmp;
+
+	a += (nr >> 5);
+	mask = (1 << (nr & 0x1F));
+
+	local_irq_save(flags);
+	__asm__ __volatile__ (
+		DCACHE_CLEAR("%0", "%1", "%2")
+		M32R_LOCK" %0, @%2;		\n\t"
+		"mv	%1, %0;			\n\t"
+		"and	%0, %3;			\n\t"
+		"or	%1, %3;			\n\t"
+		M32R_UNLOCK" %1, @%2;		\n\t"
+		: "=&r" (oldbit), "=&r" (tmp)
+		: "r" (a), "r" (mask)
+		: "memory"
+	);
+	local_irq_restore(flags);
+
+	return (oldbit != 0);
+}
+
+/**
+ * test_and_clear_bit - Clear a bit and return its old value
+ * @nr: Bit to set
+ * @addr: Address to count from
+ *
+ * This operation is atomic and cannot be reordered.
+ * It also implies a memory barrier.
+ */
+static __inline__ int test_and_clear_bit(int nr, volatile void * addr)
+{
+	__u32 mask, oldbit;
+	volatile __u32 *a = addr;
+	unsigned long flags;
+	unsigned long tmp;
+
+	a += (nr >> 5);
+	mask = (1 << (nr & 0x1F));
+
+	local_irq_save(flags);
+
+	__asm__ __volatile__ (
+		DCACHE_CLEAR("%0", "%1", "%3")
+		M32R_LOCK" %0, @%3;		\n\t"
+		"mv	%1, %0;			\n\t"
+		"and	%0, %2;			\n\t"
+		"not	%2, %2;			\n\t"
+		"and	%1, %2;			\n\t"
+		M32R_UNLOCK" %1, @%3;		\n\t"
+		: "=&r" (oldbit), "=&r" (tmp), "+r" (mask)
+		: "r" (a)
+		: "memory"
+	);
+	local_irq_restore(flags);
+
+	return (oldbit != 0);
+}
+
+/**
+ * test_and_change_bit - Change a bit and return its old value
+ * @nr: Bit to set
+ * @addr: Address to count from
+ *
+ * This operation is atomic and cannot be reordered.
+ * It also implies a memory barrier.
+ */
+static __inline__ int test_and_change_bit(int nr, volatile void * addr)
+{
+	__u32 mask, oldbit;
+	volatile __u32 *a = addr;
+	unsigned long flags;
+	unsigned long tmp;
+
+	a += (nr >> 5);
+	mask = (1 << (nr & 0x1F));
+
+	local_irq_save(flags);
+	__asm__ __volatile__ (
+		DCACHE_CLEAR("%0", "%1", "%2")
+		M32R_LOCK" %0, @%2;		\n\t"
+		"mv	%1, %0;			\n\t"
+		"and	%0, %3;			\n\t"
+		"xor	%1, %3;			\n\t"
+		M32R_UNLOCK" %1, @%2;		\n\t"
+		: "=&r" (oldbit), "=&r" (tmp)
+		: "r" (a), "r" (mask)
+		: "memory"
+	);
+	local_irq_restore(flags);
+
+	return (oldbit != 0);
+}
+
+#include <asm-generic/bitops/non-atomic.h>
+#include <asm-generic/bitops/ffz.h>
+#include <asm-generic/bitops/__ffs.h>
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/__fls.h>
+#include <asm-generic/bitops/fls64.h>
+
+#ifdef __KERNEL__
+
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/find.h>
+#include <asm-generic/bitops/ffs.h>
+#include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/lock.h>
+
+#endif /* __KERNEL__ */
+
+#ifdef __KERNEL__
+
+#include <asm-generic/bitops/le.h>
+#include <asm-generic/bitops/ext2-atomic.h>
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_M32R_BITOPS_H */