release/src-rt-6.x.4708/linux/linux-2.6.36/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                 : "=r" (x)                      \
  21                 :                               \
  22                 : "r8", "r9"                    \
  23                 );                              \
  24 }
  25
  26 #define raw_local_irq_restore(x)                \
  27 {                                               \
  28         __asm__ __volatile__(                   \
  29                 "mfcr   r8, cr0;"               \
  30                 "ldi    r9, 0x1;"               \
  31                 "and    %0, %0, r9;"            \
  32                 "or     r8, r8, %0;"            \
  33                 "mtcr   r8, cr0;"               \
  34                 "nop;"                          \
  35                 "nop;"                          \
  36                 "nop;"                          \
  37                 "nop;"                          \
  38                 "nop;"                          \
  39                 :                               \
  40                 : "r"(x)                        \
  41                 : "r8", "r9"                    \
  42                 );                              \
  43 }
  44
  45 #define raw_local_irq_enable(void)              \
  46 {                                               \
  47         __asm__ __volatile__(                   \
  48                 "mfcr\tr8,cr0;"                 \
  49                 "nop;"                          \
  50                 "nop;"                          \
  51                 "ori\tr8,0x1;"                  \
  52                 "mtcr\tr8,cr0;"                 \
  53                 "nop;"                          \
  54                 "nop;"                          \
  55                 "nop;"                          \
  56                 "nop;"                          \
  57                 "nop;"                          \
  58                 :                               \
  59                 :                               \
  60                 : "r8");                        \
  61 }
  62
  63 #define raw_local_irq_disable(void)             \
  64 {                                               \
  65         __asm__ __volatile__(                   \
  66                 "mfcr\tr8,cr0;"                 \
  67                 "nop;"                          \
  68                 "nop;"                          \
  69                 "srli\tr8,r8,1;"                \
  70                 "slli\tr8,r8,1;"                \
  71                 "mtcr\tr8,cr0;"                 \
  72                 "nop;"                          \
  73                 "nop;"                          \
  74                 "nop;"                          \
  75                 "nop;"                          \
  76                 "nop;"                          \
  77                 :                               \
  78                 :                               \
  79                 : "r8");                        \
  80 }
  81
  82 #define raw_local_save_flags(x)                 \
  83 {                                               \
  84         __asm__ __volatile__(                   \
  85                 "mfcr   r8, cr0;"               \
  86                 "nop;"                          \
  87                 "nop;"                          \
  88                 "mv     %0, r8;"                \
  89                 "nop;"                          \
  90                 "nop;"                          \
  91                 "nop;"                          \
  92                 "nop;"                          \
  93                 "nop;"                          \
  94                 "ldi    r9, 0x1;"               \
  95                 "and    %0, %0, r9;"            \
  96                 : "=r" (x)                      \
  97                 :                               \
  98                 : "r8", "r9"                    \
  99                 );                              \
 100 }
 101
 102 static inline int raw_irqs_disabled_flags(unsigned long flags)
 103 {
 104         return !(flags & 1);
 105 }
 106
 107 #endif
 108
 109 #endif /* _ASM_SCORE_IRQFLAGS_H */