61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef __ASM_SH_SWAB_H
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#define __ASM_SH_SWAB_H
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/*
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* Copyright (C) 1999 Niibe Yutaka
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* Copyright (C) 2000, 2001 Paolo Alberelli
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*/
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <asm-generic/swab.h>
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static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
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{
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__asm__(
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#ifdef __SH5__
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"byterev %1, %0\n\t"
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"shari %0, 32, %0"
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#else
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"swap.b %1, %0\n\t"
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"swap.w %0, %0\n\t"
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"swap.b %0, %0"
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#endif
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: "=r" (x)
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: "r" (x));
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return x;
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}
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#define __arch_swab32 __arch_swab32
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static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
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{
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__asm__(
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#ifdef __SH5__
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"byterev %1, %0\n\t"
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"shari %0, 32, %0"
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#else
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"swap.b %1, %0"
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#endif
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: "=r" (x)
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: "r" (x));
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return x;
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}
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#define __arch_swab16 __arch_swab16
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static inline __u64 __arch_swab64(__u64 val)
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{
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union {
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struct { __u32 a,b; } s;
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__u64 u;
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} v, w;
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v.u = val;
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w.s.b = __arch_swab32(v.s.a);
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w.s.a = __arch_swab32(v.s.b);
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return w.u;
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}
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#define __arch_swab64 __arch_swab64
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#endif /* __ASM_SH_SWAB_H */
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