diff options
Diffstat (limited to 'arch/h8300/include/asm/cmpxchg.h')
-rw-r--r-- | arch/h8300/include/asm/cmpxchg.h | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/arch/h8300/include/asm/cmpxchg.h b/arch/h8300/include/asm/cmpxchg.h deleted file mode 100644 index c64bb38ce242..000000000000 --- a/arch/h8300/include/asm/cmpxchg.h +++ /dev/null @@ -1,66 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef __ARCH_H8300_CMPXCHG__ -#define __ARCH_H8300_CMPXCHG__ - -#include <linux/irqflags.h> - -#define xchg(ptr, x) \ - ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), \ - sizeof(*(ptr)))) - -struct __xchg_dummy { unsigned long a[100]; }; -#define __xg(x) ((volatile struct __xchg_dummy *)(x)) - -static inline unsigned long __xchg(unsigned long x, - volatile void *ptr, int size) -{ - unsigned long tmp, flags; - - local_irq_save(flags); - - switch (size) { - case 1: - __asm__ __volatile__ - ("mov.b %2,%0\n\t" - "mov.b %1,%2" - : "=&r" (tmp) : "r" (x), "m" (*__xg(ptr))); - break; - case 2: - __asm__ __volatile__ - ("mov.w %2,%0\n\t" - "mov.w %1,%2" - : "=&r" (tmp) : "r" (x), "m" (*__xg(ptr))); - break; - case 4: - __asm__ __volatile__ - ("mov.l %2,%0\n\t" - "mov.l %1,%2" - : "=&r" (tmp) : "r" (x), "m" (*__xg(ptr))); - break; - default: - tmp = 0; - } - local_irq_restore(flags); - return tmp; -} - -#include <asm-generic/cmpxchg-local.h> - -/* - * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make - * them available. - */ -#define cmpxchg_local(ptr, o, n) \ - ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), \ - (unsigned long)(o), \ - (unsigned long)(n), \ - sizeof(*(ptr)))) -#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) - -#ifndef CONFIG_SMP -#include <asm-generic/cmpxchg.h> -#endif - -#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) - -#endif /* __ARCH_H8300_CMPXCHG__ */ |