arch/score/include/asm/irqflags.h

   1 #ifndef _ASM_SCORE_IRQFLAGS_H
   2 #define _ASM_SCORE_IRQFLAGS_H
   3
   4 #ifndef __ASSEMBLY__
   5
   6 #define raw_local_irq_save(x)                   \
   7 {                                               \
   8         __asm__ __volatile__(                   \
   9                 "mfcr   r8, cr0;"               \
  10                 "li     r9, 0xfffffffe;"        \
  11                 "nop;"                          \
  12                 "mv     %0, r8;"                \
  13                 "and    r8, r8, r9;"            \
  14                 "mtcr   r8, cr0;"               \
  15                 "nop;"                          \
  16                 "nop;"                          \
  17                 "nop;"                          \
  18                 "nop;"                          \
  19                 "nop;"                          \
  20                 "ldi    r9, 0x1;"               \
  21                 "and    %0, %0, r9;"            \
  22                 : "=r" (x)                      \
  23                 :                               \
  24                 : "r8", "r9"                    \
  25                 );                              \
  26 }
  27
  28 #define raw_local_irq_restore(x)                \
  29 {                                               \
  30         __asm__ __volatile__(                   \
  31                 "mfcr   r8, cr0;"               \
  32                 "ldi    r9, 0x1;"               \
  33                 "and    %0, %0, r9;"            \
  34                 "or     r8, r8, %0;"            \
  35                 "mtcr   r8, cr0;"               \
  36                 "nop;"                          \
  37                 "nop;"                          \
  38                 "nop;"                          \
  39                 "nop;"                          \
  40                 "nop;"                          \
  41                 :                               \
  42                 : "r"(x)                        \
  43                 : "r8", "r9"                    \
  44                 );                              \
  45 }
  46
  47 #define raw_local_irq_enable(void)              \
  48 {                                               \
  49         __asm__ __volatile__(                   \
  50                 "mfcr\tr8,cr0;"                 \
  51                 "nop;"                          \
  52                 "nop;"                          \
  53                 "ori\tr8,0x1;"                  \
  54                 "mtcr\tr8,cr0;"                 \
  55                 "nop;"                          \
  56                 "nop;"                          \
  57                 "nop;"                          \
  58                 "nop;"                          \
  59                 "nop;"                          \
  60                 :                               \
  61                 :                               \
  62                 : "r8");                        \
  63 }
  64
  65 #define raw_local_irq_disable(void)             \
  66 {                                               \
  67         __asm__ __volatile__(                   \
  68                 "mfcr\tr8,cr0;"                 \
  69                 "nop;"                          \
  70                 "nop;"                          \
  71                 "srli\tr8,r8,1;"                \
  72                 "slli\tr8,r8,1;"                \
  73                 "mtcr\tr8,cr0;"                 \
  74                 "nop;"                          \
  75                 "nop;"                          \
  76                 "nop;"                          \
  77                 "nop;"                          \
  78                 "nop;"                          \
  79                 :                               \
  80                 :                               \
  81                 : "r8");                        \
  82 }
  83
  84 #define raw_local_save_flags(x)                 \
  85 {                                               \
  86         __asm__ __volatile__(                   \
  87                 "mfcr   r8, cr0;"               \
  88                 "nop;"                          \
  89                 "nop;"                          \
  90                 "mv     %0, r8;"                \
  91                 "nop;"                          \
  92                 "nop;"                          \
  93                 "nop;"                          \
  94                 "nop;"                          \
  95                 "nop;"                          \
  96                 "ldi    r9, 0x1;"               \
  97                 "and    %0, %0, r9;"            \
  98                 : "=r" (x)                      \
  99                 :                               \
 100                 : "r8", "r9"                    \
 101                 );                              \
 102 }
 103
 104 static inline int raw_irqs_disabled_flags(unsigned long flags)
 105 {
 106         return !(flags & 1);
 107 }
 108
 109 #endif
 110
 111 #endif /* _ASM_SCORE_IRQFLAGS_H */