projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| af8e24e9 HH |
1 | /* |
| 2 | * arch/arm/include/asm/byteorder.h | |
| 3 | * | |
| 4 | * ARM Endian-ness. In little endian mode, the data bus is connected such | |
| 5 | * that byte accesses appear as: | |
| 6 | * 0 = d0...d7, 1 = d8...d15, 2 = d16...d23, 3 = d24...d31 | |
| 7 | * and word accesses (data or instruction) appear as: | |
| 8 | * d0...d31 | |
| 9 | * | |
| 10 | * When in big endian mode, byte accesses appear as: | |
| 11 | * 0 = d24...d31, 1 = d16...d23, 2 = d8...d15, 3 = d0...d7 | |
| 12 | * and word accesses (data or instruction) appear as: | |
| 13 | * d0...d31 | |
| 14 | */ | |
| 15 | #ifndef __ASM_ARM_SWAB_H | |
| 16 | #define __ASM_ARM_SWAB_H | |
| 17 | ||
| cb8db5d4 | 18 | #include <uapi/asm/swab.h> |
| af8e24e9 | 19 | |
| 1632b9e2 | 20 | #if __LINUX_ARM_ARCH__ >= 6 |
| 40f5b078 | 21 | |
| df0e74da | 22 | static inline __attribute_const__ __u32 __arch_swahb32(__u32 x) |
| 40f5b078 RV |
23 | { |
| 24 | __asm__ ("rev16 %0, %1" : "=r" (x) : "r" (x)); | |
| 25 | return x; | |
| 26 | } | |
| df0e74da DM |
27 | #define __arch_swahb32 __arch_swahb32 |
| 28 | #define __arch_swab16(x) ((__u16)__arch_swahb32(x)) | |
| 40f5b078 RV |
29 | |
| 30 | static inline __attribute_const__ __u32 __arch_swab32(__u32 x) | |
| 31 | { | |
| 32 | __asm__ ("rev %0, %1" : "=r" (x) : "r" (x)); | |
| 33 | return x; | |
| 34 | } | |
| 35 | #define __arch_swab32 __arch_swab32 | |
| 36 | ||
| 1632b9e2 DH |
37 | #endif |
| 38 | #endif |