cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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swab.h (769B)

      1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      2#ifndef _ASM_X86_SWAB_H
      3#define _ASM_X86_SWAB_H
      4
      5#include <linux/types.h>
      6#include <linux/compiler.h>
      7
      8static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
      9{
     10	asm("bswapl %0" : "=r" (val) : "0" (val));
     11	return val;
     12}
     13#define __arch_swab32 __arch_swab32
     14
     15static inline __attribute_const__ __u64 __arch_swab64(__u64 val)
     16{
     17#ifdef __i386__
     18	union {
     19		struct {
     20			__u32 a;
     21			__u32 b;
     22		} s;
     23		__u64 u;
     24	} v;
     25	v.u = val;
     26	asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
     27	    : "=r" (v.s.a), "=r" (v.s.b)
     28	    : "0" (v.s.a), "1" (v.s.b));
     29	return v.u;
     30#else /* __i386__ */
     31	asm("bswapq %0" : "=r" (val) : "0" (val));
     32	return val;
     33#endif
     34}
     35#define __arch_swab64 __arch_swab64
     36
     37#endif /* _ASM_X86_SWAB_H */