任意64位数组加法汇编（ARM 基于ADS版）软中断实现

#include <stdio.h> unsigned *swi_addr = (unsigned *)0x08; //软中断地址 extern void SWI_Handler(void); //软中断服务程序 unsigned Install_Handler( unsigned routine, unsigned *vector ) //安装软中断 { unsigned vec, old_vec; vec = (routine - (unsigned)vector - 8) >> 2; if (vec & 0xff000000) { printf("软中断服务程序地址超过32M"); } vec = 0xea000000 | vec; old_vec = *vector; *vector = vec; return (old_vec); } struct int64 { int inthigh32; int intlow32; }; __swi(0) __value_in_regs struct int64 add64(int high32_a,int low32_a,int hign32_b,int low32_b); int main(void) { int n,i; struct int64 result={0,0},num={0,0}; Install_Handler( (unsigned) SWI_Handler, swi_addr ); //安装中断向量 printf("请输入数组的大小\n"); scanf("%d",&n); for(i=0;i<2*n;i+=2) { printf("num%d low32:",i+1); scanf("%d",&num.intlow32); printf("num%d high32:",i+1); scanf("%d",&num.inthigh32); result = add64(result.inthigh32,result.intlow32,num.inthigh32,num.intlow32); } printf("the high 32 bit of result is %d\n",result.inthigh32); printf("the low 32 bit of result is %d\n",result.intlow32); while(1); return 0; }