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50 lines
933 B
50 lines
933 B
/* 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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"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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: "=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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"swap.b %1, %0" |
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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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