71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/****************************************************************************
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****************************************************************************
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***
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*** This header was automatically generated from a Linux kernel header
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*** of the same name, to make information necessary for userspace to
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*** call into the kernel available to libc. It contains only constants,
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*** structures, and macros generated from the original header, and thus,
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*** contains no copyrightable information.
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***
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****************************************************************************
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****************************************************************************/
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#ifndef _ASM_X86_BYTEORDER_H
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#define _ASM_X86_BYTEORDER_H
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#include <asm/types.h>
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#include <linux/compiler.h>
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#ifdef __GNUC__
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#ifdef __i386__
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static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
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{
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__asm__("xchgb %b0,%h0\n\t"
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"rorl $16,%0\n\t"
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"xchgb %b0,%h0"
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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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static __inline__ __attribute_const__ __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;
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v.u = val;
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v.s.a = ___arch__swab32(v.s.a);
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v.s.b = ___arch__swab32(v.s.b);
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__asm__("xchgl %0,%1" : "=r" (v.s.a), "=r" (v.s.b) : "0" (v.s.a), "1" (v.s.b));
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return v.u;
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}
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#else
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static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
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{
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__asm__("bswapq %0" : "=r" (x) : "0" (x));
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return x;
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}
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static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
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{
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__asm__("bswapl %0" : "=r" (x) : "0" (x));
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return x;
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}
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#endif
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#define __arch__swab64(x) ___arch__swab64(x)
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#define __arch__swab32(x) ___arch__swab32(x)
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#define __BYTEORDER_HAS_U64__
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#endif
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#include <linux/byteorder/little_endian.h>
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#endif
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