aboutsummaryrefslogtreecommitdiff
path: root/arch/sparc/include/asm/bitops_32.h
diff options
context:
space:
mode:
authorSam Ravnborg <sam@ravnborg.org>2008-07-27 23:00:59 +0200
committerSam Ravnborg <sam@ravnborg.org>2008-07-27 23:00:59 +0200
commita439fe51a1f8eb087c22dd24d69cebae4a3addac (patch)
treee32d1fa97a220ab598d8ab364205817c5bf2bd6f /arch/sparc/include/asm/bitops_32.h
parent837b41b5de356aa67abb2cadb5eef3efc7776f91 (diff)
sparc, sparc64: use arch/sparc/include
The majority of this patch was created by the following script: *** ASM=arch/sparc/include/asm mkdir -p $ASM git mv include/asm-sparc64/ftrace.h $ASM git rm include/asm-sparc64/* git mv include/asm-sparc/* $ASM sed -ie 's/asm-sparc64/asm/g' $ASM/* sed -ie 's/asm-sparc/asm/g' $ASM/* *** The rest was an update of the top-level Makefile to use sparc for header files when sparc64 is being build. And a small fixlet to pick up the correct unistd.h from sparc64 code. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'arch/sparc/include/asm/bitops_32.h')
-rw-r--r--arch/sparc/include/asm/bitops_32.h111
1 files changed, 111 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/bitops_32.h b/arch/sparc/include/asm/bitops_32.h
new file mode 100644
index 00000000000..68b98a7e645
--- /dev/null
+++ b/arch/sparc/include/asm/bitops_32.h
@@ -0,0 +1,111 @@
+/*
+ * bitops.h: Bit string operations on the Sparc.
+ *
+ * Copyright 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright 1996 Eddie C. Dost (ecd@skynet.be)
+ * Copyright 2001 Anton Blanchard (anton@samba.org)
+ */
+
+#ifndef _SPARC_BITOPS_H
+#define _SPARC_BITOPS_H
+
+#include <linux/compiler.h>
+#include <asm/byteorder.h>
+
+#ifdef __KERNEL__
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
+extern unsigned long ___set_bit(unsigned long *addr, unsigned long mask);
+extern unsigned long ___clear_bit(unsigned long *addr, unsigned long mask);
+extern unsigned long ___change_bit(unsigned long *addr, unsigned long mask);
+
+/*
+ * Set bit 'nr' in 32-bit quantity at address 'addr' where bit '0'
+ * is in the highest of the four bytes and bit '31' is the high bit
+ * within the first byte. Sparc is BIG-Endian. Unless noted otherwise
+ * all bit-ops return 0 if bit was previously clear and != 0 otherwise.
+ */
+static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
+{
+ unsigned long *ADDR, mask;
+
+ ADDR = ((unsigned long *) addr) + (nr >> 5);
+ mask = 1 << (nr & 31);
+
+ return ___set_bit(ADDR, mask) != 0;
+}
+
+static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
+{
+ unsigned long *ADDR, mask;
+
+ ADDR = ((unsigned long *) addr) + (nr >> 5);
+ mask = 1 << (nr & 31);
+
+ (void) ___set_bit(ADDR, mask);
+}
+
+static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
+{
+ unsigned long *ADDR, mask;
+
+ ADDR = ((unsigned long *) addr) + (nr >> 5);
+ mask = 1 << (nr & 31);
+
+ return ___clear_bit(ADDR, mask) != 0;
+}
+
+static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
+{
+ unsigned long *ADDR, mask;
+
+ ADDR = ((unsigned long *) addr) + (nr >> 5);
+ mask = 1 << (nr & 31);
+
+ (void) ___clear_bit(ADDR, mask);
+}
+
+static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
+{
+ unsigned long *ADDR, mask;
+
+ ADDR = ((unsigned long *) addr) + (nr >> 5);
+ mask = 1 << (nr & 31);
+
+ return ___change_bit(ADDR, mask) != 0;
+}
+
+static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
+{
+ unsigned long *ADDR, mask;
+
+ ADDR = ((unsigned long *) addr) + (nr >> 5);
+ mask = 1 << (nr & 31);
+
+ (void) ___change_bit(ADDR, mask);
+}
+
+#include <asm-generic/bitops/non-atomic.h>
+
+#define smp_mb__before_clear_bit() do { } while(0)
+#define smp_mb__after_clear_bit() do { } while(0)
+
+#include <asm-generic/bitops/ffz.h>
+#include <asm-generic/bitops/__ffs.h>
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/ffs.h>
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/fls64.h>
+#include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/lock.h>
+#include <asm-generic/bitops/find.h>
+#include <asm-generic/bitops/ext2-non-atomic.h>
+#include <asm-generic/bitops/ext2-atomic.h>
+#include <asm-generic/bitops/minix.h>
+
+#endif /* __KERNEL__ */
+
+#endif /* defined(_SPARC_BITOPS_H) */