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/* 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 */
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