add64.s

来自「arm 上的64位加法」· S 代码 · 共 25 行

  AREA            rrr, CODE, READONLY
	
  ENTRY

start
		LDR		        r0, =firstnum		
		LDR		        r5, =secondnum	
        LDR             r10,=resultnum			
		LDMIA           r0!,{r1-r4}        
        LDMIA           r5!,{r6-r9}             
Addmethod
        ADDS            r1, r1,r6
        ADCS            r2, r2,r7
        ADCS            r3,r3,r8
        ADC             r4,r4,r9
                                          
        STMIA           r10!, {r1-r4}
		
		
       AREA           rrr,DATA,READWRITE

firstnum     DCD	       0,0,0,0x6fffffff
secondnum    DCD           0,0,0,0x2
resultnum    DCD           0,0,0,0
		END