uapi/asm/swab.h

0001 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
0002 #ifndef _SPARC_SWAB_H
0003 #define _SPARC_SWAB_H
0004
0005 #include <linux/types.h>
0006 #include <asm/asi.h>
0007
0008 #if defined(__sparc__) && defined(__arch64__)
0009 static inline __u16 __arch_swab16p(const __u16 *addr)
0010 {
0011     __u16 ret;
0012
0013     __asm__ __volatile__ ("lduha [%2] %3, %0"
0014                   : "=r" (ret)
0015                   : "m" (*addr), "r" (addr), "i" (ASI_PL));
0016     return ret;
0017 }
0018 #define __arch_swab16p __arch_swab16p
0019
0020 static inline __u32 __arch_swab32p(const __u32 *addr)
0021 {
0022     __u32 ret;
0023
0024     __asm__ __volatile__ ("lduwa [%2] %3, %0"
0025                   : "=r" (ret)
0026                   : "m" (*addr), "r" (addr), "i" (ASI_PL));
0027     return ret;
0028 }
0029 #define __arch_swab32p __arch_swab32p
0030
0031 static inline __u64 __arch_swab64p(const __u64 *addr)
0032 {
0033     __u64 ret;
0034
0035     __asm__ __volatile__ ("ldxa [%2] %3, %0"
0036                   : "=r" (ret)
0037                   : "m" (*addr), "r" (addr), "i" (ASI_PL));
0038     return ret;
0039 }
0040 #define __arch_swab64p __arch_swab64p
0041
0042 #else
0043 #define __SWAB_64_THRU_32__
0044 #endif /* defined(__sparc__) && defined(__arch64__) */
0045
0046 #endif /* _SPARC_SWAB_H */