Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=63e2c803326babe74033b3cbe6e8c550037c554f
Commit: 63e2c803326babe74033b3cbe6e8c550037c554f
Parent: 079060c6ff6edd32955c3e511024578db89a717b
Author: Paul Mundt <[EMAIL PROTECTED]>
AuthorDate: Sun Nov 11 17:28:18 2007 +0900
Committer: Paul Mundt <[EMAIL PROTECTED]>
CommitDate: Mon Jan 28 13:18:45 2008 +0900
sh: Plug in SH-5 ffz()/__ffs() bitops.
Signed-off-by: Paul Mundt <[EMAIL PROTECTED]>
---
include/asm-sh/bitops.h | 26 ++++++++++++++++++++++++++
1 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/include/asm-sh/bitops.h b/include/asm-sh/bitops.h
index df805f2..a7bd81a 100644
--- a/include/asm-sh/bitops.h
+++ b/include/asm-sh/bitops.h
@@ -105,6 +105,7 @@ static inline int test_and_change_bit(int nr, volatile void
* addr)
#include <asm-generic/bitops/non-atomic.h>
+#ifdef CONFIG_SUPERH32
static inline unsigned long ffz(unsigned long word)
{
unsigned long result;
@@ -138,6 +139,31 @@ static inline unsigned long __ffs(unsigned long word)
: "t");
return result;
}
+#else
+static inline unsigned long ffz(unsigned long word)
+{
+ unsigned long result, __d2, __d3;
+
+ __asm__("gettr tr0, %2\n\t"
+ "pta $+32, tr0\n\t"
+ "andi %1, 1, %3\n\t"
+ "beq %3, r63, tr0\n\t"
+ "pta $+4, tr0\n"
+ "0:\n\t"
+ "shlri.l %1, 1, %1\n\t"
+ "addi %0, 1, %0\n\t"
+ "andi %1, 1, %3\n\t"
+ "beqi %3, 1, tr0\n"
+ "1:\n\t"
+ "ptabs %2, tr0\n\t"
+ : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3)
+ : "0" (0L), "1" (word));
+
+ return result;
+}
+
+#include <asm-generic/bitops/__ffs.h>
+#endif
#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/ffs.h>
-
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