diff options
Diffstat (limited to 'arch/score/include/asm/irqflags.h')
| -rw-r--r-- | arch/score/include/asm/irqflags.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/arch/score/include/asm/irqflags.h b/arch/score/include/asm/irqflags.h new file mode 100644 index 000000000000..92eeb33dd72b --- /dev/null +++ b/arch/score/include/asm/irqflags.h | |||
| @@ -0,0 +1,111 @@ | |||
| 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 */ | ||