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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/sh/include/asm/atomic-grb.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef __ASM_SH_ATOMIC_GRB_H

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#define __ASM_SH_ATOMIC_GRB_H

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#define ATOMIC_OP(op)							\

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static inline void arch_atomic_##op(int i, atomic_t *v)			\

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{									\

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	int tmp;							\

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									\

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	__asm__ __volatile__ (						\

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		"   .align 2              \n\t"				\

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		"   mova    1f,   r0      \n\t" /* r0 = end point */	\

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		"   mov    r15,   r1      \n\t" /* r1 = saved sp */	\

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		"   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */	\

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		"   mov.l  @%1,   %0      \n\t" /* load  old value */	\

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		" " #op "   %2,   %0      \n\t" /* $op */		\

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		"   mov.l   %0,   @%1     \n\t" /* store new value */	\

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		"1: mov     r1,   r15     \n\t" /* LOGOUT */		\

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		: "=&r" (tmp),						\

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		  "+r"  (v)						\

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		: "r"   (i)						\

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		: "memory" , "r0", "r1");				\

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}									\

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#define ATOMIC_OP_RETURN(op)						\

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static inline int arch_atomic_##op##_return(int i, atomic_t *v)		\

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{									\

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	int tmp;							\

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									\

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	__asm__ __volatile__ (						\

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		"   .align 2              \n\t"				\

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		"   mova    1f,   r0      \n\t" /* r0 = end point */	\

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		"   mov    r15,   r1      \n\t" /* r1 = saved sp */	\

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		"   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */	\

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		"   mov.l  @%1,   %0      \n\t" /* load  old value */	\

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		" " #op "   %2,   %0      \n\t" /* $op */		\

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		"   mov.l   %0,   @%1     \n\t" /* store new value */	\

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		"1: mov     r1,   r15     \n\t" /* LOGOUT */		\

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		: "=&r" (tmp),						\

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		  "+r"  (v)						\

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		: "r"   (i)						\

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		: "memory" , "r0", "r1");				\

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									\

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	return tmp;							\

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}

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#define ATOMIC_FETCH_OP(op)						\

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static inline int arch_atomic_fetch_##op(int i, atomic_t *v)		\

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{									\

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	int res, tmp;							\

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									\

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	__asm__ __volatile__ (						\

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		"   .align 2              \n\t"				\

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		"   mova    1f,   r0      \n\t" /* r0 = end point */	\

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		"   mov    r15,   r1      \n\t" /* r1 = saved sp */	\

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		"   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */	\

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		"   mov.l  @%2,   %0      \n\t" /* load old value */	\

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		"   mov     %0,   %1      \n\t" /* save old value */	\

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		" " #op "   %3,   %0      \n\t" /* $op */		\

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		"   mov.l   %0,   @%2     \n\t" /* store new value */	\

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		"1: mov     r1,   r15     \n\t" /* LOGOUT */		\

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		: "=&r" (tmp), "=&r" (res), "+r"  (v)			\

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		: "r"   (i)						\

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		: "memory" , "r0", "r1");				\

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									\

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	return res;							\

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}

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#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) ATOMIC_FETCH_OP(op)

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ATOMIC_OPS(add)

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ATOMIC_OPS(sub)

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#define arch_atomic_add_return	arch_atomic_add_return

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#define arch_atomic_sub_return	arch_atomic_sub_return

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#define arch_atomic_fetch_add	arch_atomic_fetch_add

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#define arch_atomic_fetch_sub	arch_atomic_fetch_sub

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#undef ATOMIC_OPS

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#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op)

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ATOMIC_OPS(and)

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ATOMIC_OPS(or)

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ATOMIC_OPS(xor)

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#define arch_atomic_fetch_and	arch_atomic_fetch_and

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#define arch_atomic_fetch_or	arch_atomic_fetch_or

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#define arch_atomic_fetch_xor	arch_atomic_fetch_xor

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#undef ATOMIC_OPS

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#undef ATOMIC_FETCH_OP

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#undef ATOMIC_OP_RETURN

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#undef ATOMIC_OP

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#endif /* __ASM_SH_ATOMIC_GRB_H */

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