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define replacement for enable and disable irq for m0 #1519

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merged 2 commits into from
Dec 18, 2024
Merged

define replacement for enable and disable irq for m0 #1519

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039ab0d
define replacement for enable and disable irq for m0
Dec 17, 2024
9bdf731
added memory clobber to prevent memory reordering
Dec 18, 2024
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4 changes: 2 additions & 2 deletions firmware/common/locking.h
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Original file line number Diff line number Diff line change
Expand Up @@ -40,14 +40,14 @@
#else
static inline uint32_t load_exclusive(volatile uint32_t* addr)
{
__disable_irq();
__asm volatile("cpsid i" ::: "memory");
return *addr;
}

static inline uint32_t store_exclusive(uint32_t val, volatile uint32_t* addr)
{
*addr = val;
__enable_irq();
__asm volatile("cpsie i" ::: "memory");
return 0;
}
#endif
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