From 392e8802486cb573b916e746010e141a75f507e6 Mon Sep 17 00:00:00 2001
From: Kevin
Date: Sat, 15 Nov 2014 09:58:27 +0800
Subject: init android origin source code

---
 ANDROID_3.4.5/arch/blackfin/include/asm/bitops.h | 149 +++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100644 ANDROID_3.4.5/arch/blackfin/include/asm/bitops.h

(limited to 'ANDROID_3.4.5/arch/blackfin/include/asm/bitops.h')

diff --git a/ANDROID_3.4.5/arch/blackfin/include/asm/bitops.h b/ANDROID_3.4.5/arch/blackfin/include/asm/bitops.h
new file mode 100644
index 00000000..8a0fed16
--- /dev/null
+++ b/ANDROID_3.4.5/arch/blackfin/include/asm/bitops.h
@@ -0,0 +1,149 @@
+/*
+ * Copyright 2004-2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef _BLACKFIN_BITOPS_H
+#define _BLACKFIN_BITOPS_H
+
+#include <linux/compiler.h>
+
+#include <asm-generic/bitops/__ffs.h>
+#include <asm-generic/bitops/ffz.h>
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/__fls.h>
+#include <asm-generic/bitops/fls64.h>
+#include <asm-generic/bitops/find.h>
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/ffs.h>
+#include <asm-generic/bitops/const_hweight.h>
+#include <asm-generic/bitops/lock.h>
+
+#include <asm-generic/bitops/ext2-atomic.h>
+
+#ifndef CONFIG_SMP
+#include <linux/irqflags.h>
+
+/*
+ * clear_bit may not imply a memory barrier
+ */
+#ifndef smp_mb__before_clear_bit
+#define smp_mb__before_clear_bit()	smp_mb()
+#define smp_mb__after_clear_bit()	smp_mb()
+#endif
+#include <asm-generic/bitops/atomic.h>
+#include <asm-generic/bitops/non-atomic.h>
+#else
+
+#include <asm/byteorder.h>	/* swab32 */
+#include <linux/linkage.h>
+
+asmlinkage int __raw_bit_set_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_clear_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_toggle_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_test_set_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_test_clear_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_test_toggle_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_test_asm(const volatile unsigned long *addr, int nr);
+
+static inline void set_bit(int nr, volatile unsigned long *addr)
+{
+	volatile unsigned long *a = addr + (nr >> 5);
+	__raw_bit_set_asm(a, nr & 0x1f);
+}
+
+static inline void clear_bit(int nr, volatile unsigned long *addr)
+{
+	volatile unsigned long *a = addr + (nr >> 5);
+	__raw_bit_clear_asm(a, nr & 0x1f);
+}
+
+static inline void change_bit(int nr, volatile unsigned long *addr)
+{
+	volatile unsigned long *a = addr + (nr >> 5);
+	__raw_bit_toggle_asm(a, nr & 0x1f);
+}
+
+static inline int test_bit(int nr, const volatile unsigned long *addr)
+{
+	volatile const unsigned long *a = addr + (nr >> 5);
+	return __raw_bit_test_asm(a, nr & 0x1f) != 0;
+}
+
+static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
+{
+	volatile unsigned long *a = addr + (nr >> 5);
+	return __raw_bit_test_set_asm(a, nr & 0x1f);
+}
+
+static inline int test_and_clear_bit(int nr, volatile unsigned long *addr)
+{
+	volatile unsigned long *a = addr + (nr >> 5);
+	return __raw_bit_test_clear_asm(a, nr & 0x1f);
+}
+
+static inline int test_and_change_bit(int nr, volatile unsigned long *addr)
+{
+	volatile unsigned long *a = addr + (nr >> 5);
+	return __raw_bit_test_toggle_asm(a, nr & 0x1f);
+}
+
+/*
+ * clear_bit() doesn't provide any barrier for the compiler.
+ */
+#define smp_mb__before_clear_bit()	barrier()
+#define smp_mb__after_clear_bit()	barrier()
+
+#define test_bit __skip_test_bit
+#include <asm-generic/bitops/non-atomic.h>
+#undef test_bit
+
+#endif /* CONFIG_SMP */
+
+/* Needs to be after test_bit and friends */
+#include <asm-generic/bitops/le.h>
+
+/*
+ * hweightN: returns the hamming weight (i.e. the number
+ * of bits set) of a N-bit word
+ */
+
+static inline unsigned int __arch_hweight32(unsigned int w)
+{
+	unsigned int res;
+
+	__asm__ ("%0.l = ONES %1;"
+		"%0 = %0.l (Z);"
+		: "=d" (res) : "d" (w));
+	return res;
+}
+
+static inline unsigned int __arch_hweight64(__u64 w)
+{
+	return __arch_hweight32((unsigned int)(w >> 32)) +
+	       __arch_hweight32((unsigned int)w);
+}
+
+static inline unsigned int __arch_hweight16(unsigned int w)
+{
+	return __arch_hweight32(w & 0xffff);
+}
+
+static inline unsigned int __arch_hweight8(unsigned int w)
+{
+	return __arch_hweight32(w & 0xff);
+}
+
+#endif				/* _BLACKFIN_BITOPS_H */
-- 
cgit