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-
-
- #ifdef __arm__
- #ifndef _CORTEX_M3_ATOMIC_H_
- #define _CORTEX_M3_ATOMIC_H_
-
- static __inline__ uint32_t __get_primask(void) \
- { uint32_t primask = 0; \
- __asm__ volatile ("MRS %[result], PRIMASK\n\t":[result]"=r"(primask)::); \
- return primask; }
-
- static __inline__ void __set_primask(uint32_t setval) \
- { __asm__ volatile ("MSR PRIMASK, %[value]\n\t""dmb\n\t""dsb\n\t""isb\n\t"::[value]"r"(setval):);
- __asm__ volatile ("" ::: "memory");}
-
- static __inline__ uint32_t __iSeiRetVal(void) \
- { __asm__ volatile ("CPSIE i\n\t""dmb\n\t""dsb\n\t""isb\n\t"); \
- __asm__ volatile ("" ::: "memory"); return 1; }
-
- static __inline__ uint32_t __iCliRetVal(void) \
- { __asm__ volatile ("CPSID i\n\t""dmb\n\t""dsb\n\t""isb\n\t"); \
- __asm__ volatile ("" ::: "memory"); return 1; }
-
- static __inline__ void __iSeiParam(const uint32_t *__s) \
- { __asm__ volatile ("CPSIE i\n\t""dmb\n\t""dsb\n\t""isb\n\t"); \
- __asm__ volatile ("" ::: "memory"); (void)__s; }
-
- static __inline__ void __iCliParam(const uint32_t *__s) \
- { __asm__ volatile ("CPSID i\n\t""dmb\n\t""dsb\n\t""isb\n\t"); \
- __asm__ volatile ("" ::: "memory"); (void)__s; }
-
- static __inline__ void __iRestore(const uint32_t *__s) \
- { __set_primask(*__s); __asm__ volatile ("dmb\n\t""dsb\n\t""isb\n\t"); \
- __asm__ volatile ("" ::: "memory"); }
-
-
- #define ATOMIC_BLOCK(type) \
- for ( type, __ToDo = __iCliRetVal(); __ToDo ; __ToDo = 0 )
-
- #define ATOMIC_RESTORESTATE \
- uint32_t primask_save __attribute__((__cleanup__(__iRestore))) = __get_primask()
-
- #define ATOMIC_FORCEON \
- uint32_t primask_save __attribute__((__cleanup__(__iSeiParam))) = 0
-
- #define NONATOMIC_BLOCK(type) \
- for ( type, __ToDo = __iSeiRetVal(); __ToDo ; __ToDo = 0 )
-
- #define NONATOMIC_RESTORESTATE \
- uint32_t primask_save __attribute__((__cleanup__(__iRestore))) = __get_primask()
-
- #define NONATOMIC_FORCEOFF \
- uint32_t primask_save __attribute__((__cleanup__(__iCliParam))) = 0
-
- #endif
- #endif
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