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-rw-r--r--arch/mips/include/asm/bitrev.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/mips/include/asm/bitrev.h b/arch/mips/include/asm/bitrev.h
new file mode 100644
index 0000000000..8a2538e08a
--- /dev/null
+++ b/arch/mips/include/asm/bitrev.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __MIPS_ASM_BITREV_H__
+#define __MIPS_ASM_BITREV_H__
+
+#include <linux/swab.h>
+
+static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)
+{
+ u32 ret;
+
+ asm("bitswap %0, %1" : "=r"(ret) : "r"(__swab32(x)));
+ return ret;
+}
+
+static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x)
+{
+ u16 ret;
+
+ asm("bitswap %0, %1" : "=r"(ret) : "r"(__swab16(x)));
+ return ret;
+}
+
+static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x)
+{
+ u8 ret;
+
+ asm("bitswap %0, %1" : "=r"(ret) : "r"(x));
+ return ret;
+}
+
+#endif /* __MIPS_ASM_BITREV_H__ */