110 lines
1.7 KiB
C
110 lines
1.7 KiB
C
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#ifndef _ASM_SCORE_IRQFLAGS_H
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#define _ASM_SCORE_IRQFLAGS_H
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#ifndef __ASSEMBLY__
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#define raw_local_irq_save(x) \
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{ \
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__asm__ __volatile__( \
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"mfcr r8, cr0;" \
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"li r9, 0xfffffffe;" \
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"nop;" \
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"mv %0, r8;" \
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"and r8, r8, r9;" \
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"mtcr r8, cr0;" \
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"nop;" \
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"nop;" \
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"nop;" \
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"nop;" \
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"nop;" \
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: "=r" (x) \
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: \
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: "r8", "r9" \
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); \
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}
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#define raw_local_irq_restore(x) \
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{ \
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__asm__ __volatile__( \
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"mfcr r8, cr0;" \
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"ldi r9, 0x1;" \
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"and %0, %0, r9;" \
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"or r8, r8, %0;" \
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"mtcr r8, cr0;" \
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"nop;" \
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"nop;" \
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"nop;" \
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"nop;" \
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"nop;" \
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: \
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: "r"(x) \
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: "r8", "r9" \
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); \
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}
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#define raw_local_irq_enable(void) \
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{ \
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__asm__ __volatile__( \
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"mfcr\tr8,cr0;" \
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"nop;" \
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"nop;" \
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"ori\tr8,0x1;" \
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"mtcr\tr8,cr0;" \
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"nop;" \
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"nop;" \
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"nop;" \
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"nop;" \
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"nop;" \
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: \
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: \
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: "r8"); \
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}
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#define raw_local_irq_disable(void) \
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{ \
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__asm__ __volatile__( \
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"mfcr\tr8,cr0;" \
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"nop;" \
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"nop;" \
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"srli\tr8,r8,1;" \
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"slli\tr8,r8,1;" \
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"mtcr\tr8,cr0;" \
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"nop;" \
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"nop;" \
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"nop;" \
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"nop;" \
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"nop;" \
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: \
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: \
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: "r8"); \
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}
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#define raw_local_save_flags(x) \
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{ \
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__asm__ __volatile__( \
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"mfcr r8, cr0;" \
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"nop;" \
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"nop;" \
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"mv %0, r8;" \
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"nop;" \
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"nop;" \
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"nop;" \
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"nop;" \
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"nop;" \
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"ldi r9, 0x1;" \
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"and %0, %0, r9;" \
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: "=r" (x) \
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: \
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: "r8", "r9" \
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); \
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}
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static inline int raw_irqs_disabled_flags(unsigned long flags)
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{
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return !(flags & 1);
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}
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#endif
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#endif /* _ASM_SCORE_IRQFLAGS_H */
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