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