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並前往https://github.com/Xilinx/embeddedsw/blob/master/lib/bsp/standalone/src/arm/common/gcc/xpseudo_asm_gcc.h

embeddedsw/xpseudo_asm_gcc.h at master · Xilinx ... - GitHub

pseudo assembler instructions */. #define mfcpsr() ({u32 rval = 0U; \. asm volatile("mrs %0, DAIF" : "=r" (rval));\. rval;\. }) #define mtcpsr(v) __asm__ ...

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