#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