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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /arch/sh/include/asm/bitops.h
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/sh/include/asm/bitops.h')
-rw-r--r--arch/sh/include/asm/bitops.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/sh/include/asm/bitops.h b/arch/sh/include/asm/bitops.h
new file mode 100644
index 000000000..450b5854d
--- /dev/null
+++ b/arch/sh/include/asm/bitops.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_SH_BITOPS_H
+#define __ASM_SH_BITOPS_H
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
+/* For __swab32 */
+#include <asm/byteorder.h>
+#include <asm/barrier.h>
+
+#ifdef CONFIG_GUSA_RB
+#include <asm/bitops-grb.h>
+#elif defined(CONFIG_CPU_SH2A)
+#include <asm-generic/bitops/atomic.h>
+#include <asm/bitops-op32.h>
+#elif defined(CONFIG_CPU_SH4A)
+#include <asm/bitops-llsc.h>
+#elif defined(CONFIG_CPU_J2) && defined(CONFIG_SMP)
+#include <asm/bitops-cas.h>
+#else
+#include <asm-generic/bitops/atomic.h>
+#include <asm-generic/bitops/non-atomic.h>
+#endif
+
+static inline unsigned long ffz(unsigned long word)
+{
+ unsigned long result;
+
+ __asm__("1:\n\t"
+ "shlr %1\n\t"
+ "bt/s 1b\n\t"
+ " add #1, %0"
+ : "=r" (result), "=r" (word)
+ : "0" (~0L), "1" (word)
+ : "t");
+ return result;
+}
+
+/**
+ * __ffs - find first bit in word.
+ * @word: The word to search
+ *
+ * Undefined if no bit exists, so code should check against 0 first.
+ */
+static inline unsigned long __ffs(unsigned long word)
+{
+ unsigned long result;
+
+ __asm__("1:\n\t"
+ "shlr %1\n\t"
+ "bf/s 1b\n\t"
+ " add #1, %0"
+ : "=r" (result), "=r" (word)
+ : "0" (~0L), "1" (word)
+ : "t");
+ return result;
+}
+
+#include <asm-generic/bitops/find.h>
+#include <asm-generic/bitops/ffs.h>
+#include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/lock.h>
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/le.h>
+#include <asm-generic/bitops/ext2-atomic.h>
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/__fls.h>
+#include <asm-generic/bitops/fls64.h>
+
+#endif /* __ASM_SH_BITOPS_H */