arch/sh/include/asm/bitops-grb.h

   1 #ifndef __ASM_SH_BITOPS_GRB_H
   2 #define __ASM_SH_BITOPS_GRB_H
   3
   4 static inline void set_bit(int nr, volatile void * addr)
   5 {
   6         int     mask;
   7         volatile unsigned int *a = addr;
   8         unsigned long tmp;
   9
  10         a += nr >> 5;
  11         mask = 1 << (nr & 0x1f);
  12
  13         __asm__ __volatile__ (
  14                 "   .align 2              \n\t"
  15                 "   mova    1f,   r0      \n\t" /* r0 = end point */
  16                 "   mov    r15,   r1      \n\t" /* r1 = saved sp */
  17                 "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
  18                 "   mov.l  @%1,   %0      \n\t" /* load  old value */
  19                 "   or      %2,   %0      \n\t" /* or */
  20                 "   mov.l   %0,   @%1     \n\t" /* store new value */
  21                 "1: mov     r1,   r15     \n\t" /* LOGOUT */
  22                 : "=&r" (tmp),
  23                   "+r"  (a)
  24                 : "r"   (mask)
  25                 : "memory" , "r0", "r1");
  26 }
  27
  28 static inline void clear_bit(int nr, volatile void * addr)
  29 {
  30         int     mask;
  31         volatile unsigned int *a = addr;
  32         unsigned long tmp;
  33
  34         a += nr >> 5;
  35         mask = ~(1 << (nr & 0x1f));
  36         __asm__ __volatile__ (
  37                 "   .align 2              \n\t"
  38                 "   mova    1f,   r0      \n\t" /* r0 = end point */
  39                 "   mov    r15,   r1      \n\t" /* r1 = saved sp */
  40                 "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
  41                 "   mov.l  @%1,   %0      \n\t" /* load  old value */
  42                 "   and     %2,   %0      \n\t" /* and */
  43                 "   mov.l   %0,   @%1     \n\t" /* store new value */
  44                 "1: mov     r1,   r15     \n\t" /* LOGOUT */
  45                 : "=&r" (tmp),
  46                   "+r"  (a)
  47                 : "r"   (mask)
  48                 : "memory" , "r0", "r1");
  49 }
  50
  51 static inline void change_bit(int nr, volatile void * addr)
  52 {
  53         int     mask;
  54         volatile unsigned int *a = addr;
  55         unsigned long tmp;
  56
  57         a += nr >> 5;
  58         mask = 1 << (nr & 0x1f);
  59         __asm__ __volatile__ (
  60                 "   .align 2              \n\t"
  61                 "   mova    1f,   r0      \n\t" /* r0 = end point */
  62                 "   mov    r15,   r1      \n\t" /* r1 = saved sp */
  63                 "   mov    #-6,   r15     \n\t" /* LOGIN: r15 = size */
  64                 "   mov.l  @%1,   %0      \n\t" /* load  old value */
  65                 "   xor     %2,   %0      \n\t" /* xor */
  66                 "   mov.l   %0,   @%1     \n\t" /* store new value */
  67                 "1: mov     r1,   r15     \n\t" /* LOGOUT */
  68                 : "=&r" (tmp),
  69                   "+r"  (a)
  70                 : "r"   (mask)
  71                 : "memory" , "r0", "r1");
  72 }
  73
  74 static inline int test_and_set_bit(int nr, volatile void * addr)
  75 {
  76         int     mask, retval;
  77         volatile unsigned int *a = addr;
  78         unsigned long tmp;
  79
  80         a += nr >> 5;
  81         mask = 1 << (nr & 0x1f);
  82
  83         __asm__ __volatile__ (
  84                 "   .align 2              \n\t"
  85                 "   mova    1f,   r0      \n\t" /* r0 = end point */
  86                 "   mov    r15,   r1      \n\t" /* r1 = saved sp */
  87                 "   mov   #-14,   r15     \n\t" /* LOGIN: r15 = size */
  88                 "   mov.l  @%2,   %0      \n\t" /* load old value */
  89                 "   mov     %0,   %1      \n\t"
  90                 "   tst     %1,   %3      \n\t" /* T = ((*a & mask) == 0) */
  91                 "   mov    #-1,   %1      \n\t" /* retvat = -1 */
  92                 "   negc    %1,   %1      \n\t" /* retval = (mask & *a) != 0 */
  93                 "   or      %3,   %0      \n\t"
  94                 "   mov.l   %0,  @%2      \n\t" /* store new value */
  95                 "1: mov     r1,  r15      \n\t" /* LOGOUT */
  96                 : "=&r" (tmp),
  97                   "=&r" (retval),
  98                   "+r"  (a)
  99                 : "r"   (mask)
 100                 : "memory" , "r0", "r1" ,"t");
 101
 102         return retval;
 103 }
 104
 105 static inline int test_and_clear_bit(int nr, volatile void * addr)
 106 {
 107         int     mask, retval,not_mask;
 108         volatile unsigned int *a = addr;
 109         unsigned long tmp;
 110
 111         a += nr >> 5;
 112         mask = 1 << (nr & 0x1f);
 113
 114         not_mask = ~mask;
 115
 116         __asm__ __volatile__ (
 117                 "   .align 2              \n\t"
 118                 "   mova    1f,   r0      \n\t" /* r0 = end point */
 119                 "   mov    r15,   r1      \n\t" /* r1 = saved sp */
 120                 "   mov   #-14,   r15     \n\t" /* LOGIN */
 121                 "   mov.l  @%2,   %0      \n\t" /* load old value */
 122                 "   mov     %0,   %1      \n\t" /* %1 = *a */
 123                 "   tst     %1,   %3      \n\t" /* T = ((*a & mask) == 0) */
 124                 "   mov    #-1,   %1      \n\t" /* retvat = -1 */
 125                 "   negc    %1,   %1      \n\t" /* retval = (mask & *a) != 0 */
 126                 "   and     %4,   %0      \n\t"
 127                 "   mov.l   %0,  @%2      \n\t" /* store new value */
 128                 "1: mov     r1,   r15     \n\t" /* LOGOUT */
 129                 : "=&r" (tmp),
 130                   "=&r" (retval),
 131                   "+r"  (a)
 132                 : "r"   (mask),
 133                   "r"   (not_mask)
 134                 : "memory" , "r0", "r1", "t");
 135
 136         return retval;
 137 }
 138
 139 static inline int test_and_change_bit(int nr, volatile void * addr)
 140 {
 141         int     mask, retval;
 142         volatile unsigned int *a = addr;
 143         unsigned long tmp;
 144
 145         a += nr >> 5;
 146         mask = 1 << (nr & 0x1f);
 147
 148         __asm__ __volatile__ (
 149                 "   .align 2              \n\t"
 150                 "   mova    1f,   r0      \n\t" /* r0 = end point */
 151                 "   mov    r15,   r1      \n\t" /* r1 = saved sp */
 152                 "   mov   #-14,   r15     \n\t" /* LOGIN */
 153                 "   mov.l  @%2,   %0      \n\t" /* load old value */
 154                 "   mov     %0,   %1      \n\t" /* %1 = *a */
 155                 "   tst     %1,   %3      \n\t" /* T = ((*a & mask) == 0) */
 156                 "   mov    #-1,   %1      \n\t" /* retvat = -1 */
 157                 "   negc    %1,   %1      \n\t" /* retval = (mask & *a) != 0 */
 158                 "   xor     %3,   %0      \n\t"
 159                 "   mov.l   %0,  @%2      \n\t" /* store new value */
 160                 "1: mov     r1,   r15     \n\t" /* LOGOUT */
 161                 : "=&r" (tmp),
 162                   "=&r" (retval),
 163                   "+r"  (a)
 164                 : "r"   (mask)
 165                 : "memory" , "r0", "r1", "t");
 166
 167         return retval;
 168 }
 169 #endif /* __ASM_SH_BITOPS_GRB_H */