下述代码是常见的字符串赋值函数strcpy,选项中哪一项C代码中调用该汇编函数的正确方式( )
EXPORT strcpy
strcpy
LDRB R2, [R0], #1
STRB R2, [R1], #1
CMP R2, #0
BNE strcopy
MOV PC, LR
END
strcpy
LDRB R2, [R0], #1
STRB R2, [R1], #1
CMP R2, #0
BNE strcopy
MOV PC, LR
END