/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_CMPXCHG_LLSC_H
#define __ASM_SH_CMPXCHG_LLSC_H

static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
{
        unsigned long retval;
        unsigned long tmp;

        __asm__ __volatile__ (
                "1:                                     \n\t"
                "movli.l        @%2, %0 ! xchg_u32      \n\t"
                "mov            %0, %1                  \n\t"
                "mov            %3, %0                  \n\t"
                "movco.l        %0, @%2                 \n\t"
                "bf             1b                      \n\t"
                "synco                                  \n\t"
                : "=&z"(tmp), "=&r" (retval)
                : "r" (m), "r" (val)
                : "t", "memory"
        );

        return retval;
}

static inline unsigned long
__cmpxchg_u32(volatile u32 *m, unsigned long old, unsigned long new)
{
        unsigned long retval;
        unsigned long tmp;

        __asm__ __volatile__ (
                "1:                                             \n\t"
                "movli.l        @%2, %0 ! __cmpxchg_u32         \n\t"
                "mov            %0, %1                          \n\t"
                "cmp/eq         %1, %3                          \n\t"
                "bf             2f                              \n\t"
                "mov            %4, %0                          \n\t"
                "2:                                             \n\t"
                "movco.l        %0, @%2                         \n\t"
                "bf             1b                              \n\t"
                "synco                                          \n\t"
                : "=&z" (tmp), "=&r" (retval)
                : "r" (m), "r" (old), "r" (new)
                : "t", "memory"
        );

        return retval;
}

#include <asm/cmpxchg-xchg.h>

#endif /* __ASM_SH_CMPXCHG_LLSC_H */