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-rw-r--r--include/asm-mips/byteorder.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/asm-mips/byteorder.h b/include/asm-mips/byteorder.h
index 584f8128fffd..aefc02f16fd8 100644
--- a/include/asm-mips/byteorder.h
+++ b/include/asm-mips/byteorder.h
@@ -39,6 +39,24 @@ static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
39} 39}
40#define __arch__swab32(x) ___arch__swab32(x) 40#define __arch__swab32(x) ___arch__swab32(x)
41 41
42#ifdef CONFIG_CPU_MIPS64_R2
43
44static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
45{
46 __asm__(
47 " dsbh %0, %1 \n"
48 " dshd %0, %0 \n"
49 " drotr %0, %0, 32 \n"
50 : "=r" (x)
51 : "r" (x));
52
53 return x;
54}
55
56#define __arch__swab64(x) ___arch__swab64(x)
57
58#endif /* CONFIG_CPU_MIPS64_R2 */
59
42#endif /* CONFIG_CPU_MIPSR2 */ 60#endif /* CONFIG_CPU_MIPSR2 */
43 61
44#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) 62#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)