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authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-21 09:40:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-21 09:40:26 -0700
commitf8b71a3a92d69cb1c9c2162f9235d3dd550e4aa0 (patch)
treed0853186f33314a6e45903876d0e94d1619fcca9 /include/asm-sparc/bitops_64.h
parent42a77a1b8fe4fd78cf8d8fccbaac918bbe888192 (diff)
parente4f25060b87a627f5cda84b8134911d43c919458 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: (44 commits) sparc: Remove Sparc's asm-offsets for sclow.S sparc64: Update defconfig. sparc64: Add Niagara2 RNG driver. sparc64: Add missing hypervisor service group numbers. sparc64: Remove 4MB and 512K base page size options. sparc64: Convert to generic helpers for IPI function calls. sparc: Use new '%pS' infrastructure to print symbols. sparc32: fix init.c allnoconfig build error sparc64: Config category "Processor type and features" absent sparc: arch/sparc/kernel/apc.c to unlocked_ioctl sparc: join the remaining header files sparc: merge header files with trivial differences sparc: when header files are equal use asm-sparc version sparc: copy sparc64 specific files to asm-sparc sparc: Merge asm-sparc{,64}/asi.h sparc: export openprom.h to userspace sparc: Merge asm-sparc{,64}/types.h sparc: Merge asm-sparc{,64}/termios.h sparc: Merge asm-sparc{,64}/termbits.h sparc: Merge asm-sparc{,64}/setup.h ...
Diffstat (limited to 'include/asm-sparc/bitops_64.h')
-rw-r--r--include/asm-sparc/bitops_64.h107
1 files changed, 107 insertions, 0 deletions
diff --git a/include/asm-sparc/bitops_64.h b/include/asm-sparc/bitops_64.h
new file mode 100644
index 00000000000..bb87b808022
--- /dev/null
+++ b/include/asm-sparc/bitops_64.h
@@ -0,0 +1,107 @@
+/*
+ * bitops.h: Bit string operations on the V9.
+ *
+ * Copyright 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#ifndef _SPARC64_BITOPS_H
+#define _SPARC64_BITOPS_H
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
+#include <linux/compiler.h>
+#include <asm/byteorder.h>
+
+extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr);
+extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr);
+extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr);
+extern void set_bit(unsigned long nr, volatile unsigned long *addr);
+extern void clear_bit(unsigned long nr, volatile unsigned long *addr);
+extern void change_bit(unsigned long nr, volatile unsigned long *addr);
+
+#include <asm-generic/bitops/non-atomic.h>
+
+#ifdef CONFIG_SMP
+#define smp_mb__before_clear_bit() membar_storeload_loadload()
+#define smp_mb__after_clear_bit() membar_storeload_storestore()
+#else
+#define smp_mb__before_clear_bit() barrier()
+#define smp_mb__after_clear_bit() barrier()
+#endif
+
+#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/ffs.h>
+
+/*
+ * hweightN: returns the hamming weight (i.e. the number
+ * of bits set) of a N-bit word
+ */
+
+#ifdef ULTRA_HAS_POPULATION_COUNT
+
+static inline unsigned int hweight64(unsigned long w)
+{
+ unsigned int res;
+
+ __asm__ ("popc %1,%0" : "=r" (res) : "r" (w));
+ return res;
+}
+
+static inline unsigned int hweight32(unsigned int w)
+{
+ unsigned int res;
+
+ __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff));
+ return res;
+}
+
+static inline unsigned int hweight16(unsigned int w)
+{
+ unsigned int res;
+
+ __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff));
+ return res;
+}
+
+static inline unsigned int hweight8(unsigned int w)
+{
+ unsigned int res;
+
+ __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff));
+ return res;
+}
+
+#else
+
+#include <asm-generic/bitops/hweight.h>
+
+#endif
+#include <asm-generic/bitops/lock.h>
+#endif /* __KERNEL__ */
+
+#include <asm-generic/bitops/find.h>
+
+#ifdef __KERNEL__
+
+#include <asm-generic/bitops/ext2-non-atomic.h>
+
+#define ext2_set_bit_atomic(lock,nr,addr) \
+ test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
+#define ext2_clear_bit_atomic(lock,nr,addr) \
+ test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
+
+#include <asm-generic/bitops/minix.h>
+
+#endif /* __KERNEL__ */
+
+#endif /* defined(_SPARC64_BITOPS_H) */