LXR linux/arch/sh/include/asm/atomic-grb.h

   1#ifndef __ASM_SH_ATOMIC_GRB_H
   2#define __ASM_SH_ATOMIC_GRB_H
   3
   4static inline void atomic_add(int i, atomic_t *v)
   5{
   6        int tmp;
   7
   8        __asm__ __volatile__ (
   9                "   .align 2              \n\t"
  10                "   mova    1f,   r0      \n\t" /* r0 = end point */
  11                "   mov    r15,   r1      \n\t" /* r1 = saved sp */
  12                "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
  13                "   mov.l  @%1,   %0      \n\t" /* load  old value */
  14                "   add     %2,   %0      \n\t" /* add */
  15                "   mov.l   %0,   @%1     \n\t" /* store new value */
  16                "1: mov     r1,   r15     \n\t" /* LOGOUT */
  17                : "=&r" (tmp),
  18                  "+r"  (v)
  19                : "r"   (i)
  20                : "memory" , "r0", "r1");
  21}
  22
  23static inline void atomic_sub(int i, atomic_t *v)
  24{
  25        int tmp;
  26
  27        __asm__ __volatile__ (
  28                "   .align 2              \n\t"
  29                "   mova    1f,   r0      \n\t" /* r0 = end point */
  30                "   mov     r15,  r1      \n\t" /* r1 = saved sp */
  31                "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
  32                "   mov.l  @%1,   %0      \n\t" /* load  old value */
  33                "   sub     %2,   %0      \n\t" /* sub */
  34                "   mov.l   %0,   @%1     \n\t" /* store new value */
  35                "1: mov     r1,   r15     \n\t" /* LOGOUT */
  36                : "=&r" (tmp),
  37                  "+r"  (v)
  38                : "r"   (i)
  39                : "memory" , "r0", "r1");
  40}
  41
  42static inline int atomic_add_return(int i, atomic_t *v)
  43{
  44        int tmp;
  45
  46        __asm__ __volatile__ (
  47                "   .align 2              \n\t"
  48                "   mova    1f,   r0      \n\t" /* r0 = end point */
  49                "   mov    r15,   r1      \n\t" /* r1 = saved sp */
  50                "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
  51                "   mov.l  @%1,   %0      \n\t" /* load  old value */
  52                "   add     %2,   %0      \n\t" /* add */
  53                "   mov.l   %0,   @%1     \n\t" /* store new value */
  54                "1: mov     r1,   r15     \n\t" /* LOGOUT */
  55                : "=&r" (tmp),
  56                  "+r"  (v)
  57                : "r"   (i)
  58                : "memory" , "r0", "r1");
  59
  60        return tmp;
  61}
  62
  63static inline int atomic_sub_return(int i, atomic_t *v)
  64{
  65        int tmp;
  66
  67        __asm__ __volatile__ (
  68                "   .align 2              \n\t"
  69                "   mova    1f,   r0      \n\t" /* r0 = end point */
  70                "   mov    r15,   r1      \n\t" /* r1 = saved sp */
  71                "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
  72                "   mov.l  @%1,   %0      \n\t" /* load  old value */
  73                "   sub     %2,   %0      \n\t" /* sub */
  74                "   mov.l   %0,   @%1     \n\t" /* store new value */
  75                "1: mov     r1,   r15     \n\t" /* LOGOUT */
  76                : "=&r" (tmp),
  77                  "+r"  (v)
  78                : "r"   (i)
  79                : "memory", "r0", "r1");
  80
  81        return tmp;
  82}
  83
  84static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
  85{
  86        int tmp;
  87        unsigned int _mask = ~mask;
  88
  89        __asm__ __volatile__ (
  90                "   .align 2              \n\t"
  91                "   mova    1f,   r0      \n\t" /* r0 = end point */
  92                "   mov    r15,   r1      \n\t" /* r1 = saved sp */
  93                "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
  94                "   mov.l  @%1,   %0      \n\t" /* load  old value */
  95                "   and     %2,   %0      \n\t" /* add */
  96                "   mov.l   %0,   @%1     \n\t" /* store new value */
  97                "1: mov     r1,   r15     \n\t" /* LOGOUT */
  98                : "=&r" (tmp),
  99                  "+r"  (v)
 100                : "r"   (_mask)
 101                : "memory" , "r0", "r1");
 102}
 103
 104static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
 105{
 106        int tmp;
 107
 108        __asm__ __volatile__ (
 109                "   .align 2              \n\t"
 110                "   mova    1f,   r0      \n\t" /* r0 = end point */
 111                "   mov    r15,   r1      \n\t" /* r1 = saved sp */
 112                "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
 113                "   mov.l  @%1,   %0      \n\t" /* load  old value */
 114                "   or      %2,   %0      \n\t" /* or */
 115                "   mov.l   %0,   @%1     \n\t" /* store new value */
 116                "1: mov     r1,   r15     \n\t" /* LOGOUT */
 117                : "=&r" (tmp),
 118                  "+r"  (v)
 119                : "r"   (mask)
 120                : "memory" , "r0", "r1");
 121}
 122
 123#endif /* __ASM_SH_ATOMIC_GRB_H */
 124