testocp.c

来自「cpu的源码」· C语言 代码 · 共 59 行

#define OCP_MAP      0x7FFFFF00
#define OCP_MAP_STOP 0x7FFFFFFC

typedef unsigned int address;
typedef unsigned int value;


#define ocpload(map, load) { \
unsigned int *ctrlload = (unsigned int *) map; \
load =  *ctrlload;}


#define ocpstore(map,save) { \
unsigned int *ctrlstore = (unsigned int *) map; \
*ctrlstore = save;}

int main(void){

  address addrload1, addrload2, addrstore1; 
  value tempload1, tempload2, result; 

  //asm("nop");
  //asm("nop");
  asm("nop");
  

  addrload1 = (address) 0x7FFFFF00; 
  ocpload(addrload1, tempload1);

  //for(i = 0; i<5; i++);
  //asm("nop");
  //asm("nop");

  addrstore1 = (address) 0x7FFFFF04;
  ocpstore(addrstore1,tempload1+36);

  //for(i = 0; i<5; i++);
  //asm("nop");
  //asm("nop");

  addrload2 = (address) 0x7FFFFF14;
  ocpload(addrload2, tempload2);
  
  //for(i = 0; i<2; i++);
  //asm("nop");
  //asm("nop");



  if(tempload2 == tempload1+36)
      result = -1;
  else
    result = 0xFFFF;

  return 0;
}