projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 156ca2bb HH |
1 | /* |
| 2 | * This program is free software; you can redistribute it and/or | |
| 3 | * modify it under the terms of the GNU General Public License | |
| 4 | * as published by the Free Software Foundation; either version | |
| 5 | * 2 of the License, or (at your option) any later version. | |
| 6 | */ | |
| c3617f72 DH |
7 | #ifndef _ASM_POWERPC_SWAB_H |
| 8 | #define _ASM_POWERPC_SWAB_H | |
| 156ca2bb | 9 | |
| c3617f72 | 10 | #include <uapi/asm/swab.h> |
| 156ca2bb HH |
11 | |
| 12 | #ifdef __GNUC__ | |
| 156ca2bb | 13 | #ifndef __powerpc64__ |
| 156ca2bb HH |
14 | #endif /* __powerpc64__ */ |
| 15 | ||
| 156ca2bb HH |
16 | static __inline__ __u16 ld_le16(const volatile __u16 *addr) |
| 17 | { | |
| 18 | __u16 val; | |
| 19 | ||
| 20 | __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr)); | |
| 21 | return val; | |
| 22 | } | |
| 23 | #define __arch_swab16p ld_le16 | |
| 24 | ||
| 25 | static __inline__ void st_le16(volatile __u16 *addr, const __u16 val) | |
| 26 | { | |
| 27 | __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr)); | |
| 28 | } | |
| 29 | ||
| 30 | static inline void __arch_swab16s(__u16 *addr) | |
| 31 | { | |
| 32 | st_le16(addr, *addr); | |
| 33 | } | |
| 34 | #define __arch_swab16s __arch_swab16s | |
| 35 | ||
| 36 | static __inline__ __u32 ld_le32(const volatile __u32 *addr) | |
| 37 | { | |
| 38 | __u32 val; | |
| 39 | ||
| 40 | __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr)); | |
| 41 | return val; | |
| 42 | } | |
| 43 | #define __arch_swab32p ld_le32 | |
| 44 | ||
| 45 | static __inline__ void st_le32(volatile __u32 *addr, const __u32 val) | |
| 46 | { | |
| 47 | __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr)); | |
| 48 | } | |
| 49 | ||
| 50 | static inline void __arch_swab32s(__u32 *addr) | |
| 51 | { | |
| 52 | st_le32(addr, *addr); | |
| 53 | } | |
| 54 | #define __arch_swab32s __arch_swab32s | |
| 55 | ||
| 56 | static inline __attribute_const__ __u16 __arch_swab16(__u16 value) | |
| 57 | { | |
| 58 | __u16 result; | |
| 59 | ||
| 60 | __asm__("rlwimi %0,%1,8,16,23" | |
| 61 | : "=r" (result) | |
| 62 | : "r" (value), "0" (value >> 8)); | |
| 63 | return result; | |
| 64 | } | |
| 65 | #define __arch_swab16 __arch_swab16 | |
| 66 | ||
| 67 | static inline __attribute_const__ __u32 __arch_swab32(__u32 value) | |
| 68 | { | |
| 69 | __u32 result; | |
| 70 | ||
| 71 | __asm__("rlwimi %0,%1,24,16,23\n\t" | |
| 72 | "rlwimi %0,%1,8,8,15\n\t" | |
| 73 | "rlwimi %0,%1,24,0,7" | |
| 74 | : "=r" (result) | |
| 75 | : "r" (value), "0" (value >> 24)); | |
| 76 | return result; | |
| 77 | } | |
| 78 | #define __arch_swab32 __arch_swab32 | |
| 79 | ||
| 156ca2bb | 80 | #endif /* __GNUC__ */ |
| 156ca2bb | 81 | #endif /* _ASM_POWERPC_SWAB_H */ |