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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/sh/include/asm/atomic-grb.h
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#ifndef __ASM_SH_ATOMIC_GRB_H

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#define __ASM_SH_ATOMIC_GRB_H

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static inline void atomic_add(int i, atomic_t *v)

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{

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	int tmp;

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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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		"   add     %2,   %0      \n\t" /* add */

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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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static inline void atomic_sub(int i, atomic_t *v)

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{

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	int tmp;

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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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		"   sub     %2,   %0      \n\t" /* sub */

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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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static inline int atomic_add_return(int i, atomic_t *v)

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{

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	int tmp;

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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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		"   add     %2,   %0      \n\t" /* add */

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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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	return tmp;

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}

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static inline int atomic_sub_return(int i, atomic_t *v)

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{

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	int tmp;

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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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		"   sub     %2,   %0      \n\t" /* sub */

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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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	return tmp;

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}

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static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)

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{

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	int tmp;

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	unsigned int _mask = ~mask;

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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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		"   and     %2,   %0      \n\t" /* add */

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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"   (_mask)

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

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}

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static inline void atomic_set_mask(unsigned int mask, atomic_t *v)

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{

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	int tmp;

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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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		"   or      %2,   %0      \n\t" /* or */

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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"   (mask)

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

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}

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#endif /* __ASM_SH_ATOMIC_GRB_H */

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