| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | // Copyright (C) 2005-2017 Andes Technology Corporation |
| 3 | |
| 4 | #ifndef __NDS32_SWAB_H__ |
| 5 | #define __NDS32_SWAB_H__ |
| 6 | |
| 7 | #include <linux/types.h> |
| 8 | #include <linux/compiler.h> |
| 9 | |
| 10 | static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) |
| 11 | { |
| 12 | __asm__("wsbh %0, %0\n\t" /* word swap byte within halfword */ |
| 13 | "rotri %0, %0, #16\n" |
| 14 | :"=r"(x) |
| 15 | :"0"(x)); |
| 16 | return x; |
| 17 | } |
| 18 | |
| 19 | static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) |
| 20 | { |
| 21 | __asm__("wsbh %0, %0\n" /* word swap byte within halfword */ |
| 22 | :"=r"(x) |
| 23 | :"0"(x)); |
| 24 | return x; |
| 25 | } |
| 26 | |
| 27 | #define __arch_swab32(x) ___arch__swab32(x) |
| 28 | #define __arch_swab16(x) ___arch__swab16(x) |
| 29 | |
| 30 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) |
| 31 | #define __BYTEORDER_HAS_U64__ |
| 32 | #define __SWAB_64_THRU_32__ |
| 33 | #endif |
| 34 | |
| 35 | #endif /* __NDS32_SWAB_H__ */ |