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9097805067
Remove the very old x86 code and add support for 64-bit. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
45 lines
860 B
C
45 lines
860 B
C
#ifndef _I386_BYTEORDER_H
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#define _I386_BYTEORDER_H
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#include <asm/types.h>
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#ifdef __GNUC__
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static __inline__ __u32 ___arch__swab32(__u32 x)
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{
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__asm__("bswap %0" : "=r" (x) : "0" (x));
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return x;
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}
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#define _constant_swab16(x) ((__u16)( \
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(((__u16)(x) & (__u16)0x00ffU) << 8) | \
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(((__u16)(x) & (__u16)0xff00U) >> 8)))
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static __inline__ __u16 ___arch__swab16(__u16 x)
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{
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#if CONFIG_IS_ENABLED(X86_64)
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return _constant_swab16(x);
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#else
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__asm__("xchgb %b0,%h0" /* swap bytes */ \
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: "=q" (x) \
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: "0" (x)); \
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return x;
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#endif
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}
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#define __arch__swab32(x) ___arch__swab32(x)
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#define __arch__swab16(x) ___arch__swab16(x)
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#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
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# define __BYTEORDER_HAS_U64__
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# define __SWAB_64_THRU_32__
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#endif
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#endif /* __GNUC__ */
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#include <linux/byteorder/little_endian.h>
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#endif /* _I386_BYTEORDER_H */
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