CMSIS目前支持三大主流的工具链,即ARM RealView (armcc), IAR EWARM (iccarm), and GNU Compiler Collection (gcc). 在core_cm3.h中有如下定义: /* define compiler specific symbols */ #if defined ( __CC_ARM ) #define __ASM __asm /*!< asm keyword for armcc */ #define __INLINE __inline /*!< inline keyword for armcc */ #elif defined ( __ICCARM__ ) #define __ASM __asm /*!< asm keyword for iarcc */