AREA Example_69,CODE,READONLY
         ENTRY
         CODE32
START    
         LDR R0,=thumb+1
         MOV R1,PC
         SUB R1,R1,#0xc
         BX  R0
         MOV R1,R2
         B START         

         CODE16
thumb    BL  ThumbRoutine   ;調(diào)用子程序
         BX R1
ThumbRoutine
         PUSH   {R1,LR}	    ;進(jìn)入子程序
         MOV    R0,#2
         POP    {R1,PC}	    ;從子程序返回
         
         END