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 (933B)

      1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      2#ifndef __ASM_SH_SWAB_H
      3#define __ASM_SH_SWAB_H
      4
      5/*
      6 * Copyright (C) 1999  Niibe Yutaka
      7 * Copyright (C) 2000, 2001  Paolo Alberelli
      8 */
      9#include <linux/compiler.h>
     10#include <linux/types.h>
     11#include <asm-generic/swab.h>
     12
     13static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
     14{
     15	__asm__(
     16		"swap.b		%1, %0\n\t"
     17		"swap.w		%0, %0\n\t"
     18		"swap.b		%0, %0"
     19		: "=r" (x)
     20		: "r" (x));
     21
     22	return x;
     23}
     24#define __arch_swab32 __arch_swab32
     25
     26static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
     27{
     28	__asm__(
     29		"swap.b		%1, %0"
     30		: "=r" (x)
     31		:  "r" (x));
     32
     33	return x;
     34}
     35#define __arch_swab16 __arch_swab16
     36
     37static inline __u64 __arch_swab64(__u64 val)
     38{
     39	union {
     40		struct { __u32 a,b; } s;
     41		__u64 u;
     42	} v, w;
     43	v.u = val;
     44	w.s.b = __arch_swab32(v.s.a);
     45	w.s.a = __arch_swab32(v.s.b);
     46	return w.u;
     47}
     48#define __arch_swab64 __arch_swab64
     49
     50#endif /* __ASM_SH_SWAB_H */