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https://github.com/brain-hackers/u-boot-brain
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2262cfeef9
Add support for i386 architecture and AMD SC520 board * Patch by Pierre Aubert, 12 Nov 2002: Add support for DOS filesystem and booting from DOS floppy disk
48 lines
959 B
C
48 lines
959 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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/* For avoiding bswap on i386 */
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#ifdef __KERNEL__
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#include <linux/config.h>
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#endif
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static __inline__ __const__ __u32 ___arch__swab32(__u32 x)
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{
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#ifdef CONFIG_X86_BSWAP
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__asm__("bswap %0" : "=r" (x) : "0" (x));
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#else
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__asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */
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"rorl $16,%0\n\t" /* swap words */
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"xchgb %b0,%h0" /* swap higher bytes */
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:"=q" (x)
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: "0" (x));
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#endif
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return x;
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}
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static __inline__ __const__ __u16 ___arch__swab16(__u16 x)
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{
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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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}
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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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