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added memory clobber to prevent memory reordering

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This commit is contained in:
gullradriel
2024-12-18 17:01:18 +01:00
parent 039ab0de46
commit 9bdf731fc0
1 changed files with 2 additions and 2 deletions
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4
firmware/common/locking.h
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@ -40,14 +40,14 @@
#else #else
static inline uint32_t load_exclusive(volatile uint32_t* addr) static inline uint32_t load_exclusive(volatile uint32_t* addr)
{ {
__asm volatile("cpsid i"); __asm volatile("cpsid i" ::: "memory");
return *addr; return *addr;
} }
static inline uint32_t store_exclusive(uint32_t val, volatile uint32_t* addr) static inline uint32_t store_exclusive(uint32_t val, volatile uint32_t* addr)
{ {
*addr = val; *addr = val;
__asm volatile("cpsie i"); __asm volatile("cpsie i" ::: "memory");
return 0; return 0;
} }
#endif #endif