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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cmpxchg-cas.h (549B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __ASM_SH_CMPXCHG_CAS_H
      3#define __ASM_SH_CMPXCHG_CAS_H
      4
      5static inline unsigned long
      6__cmpxchg_u32(volatile u32 *m, unsigned long old, unsigned long new)
      7{
      8	__asm__ __volatile__("cas.l %1,%0,@r0"
      9		: "+r"(new)
     10		: "r"(old), "z"(m)
     11		: "t", "memory" );
     12	return new;
     13}
     14
     15static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
     16{
     17	unsigned long old;
     18	do old = *m;
     19	while (__cmpxchg_u32(m, old, val) != old);
     20	return old;
     21}
     22
     23#include <asm/cmpxchg-xchg.h>
     24
     25#endif /* __ASM_SH_CMPXCHG_CAS_H */