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  1. #include <stdio.h>
  2.  
  3. #define OBTER_ULTIMOS_BITS(x, k) ((x) & ((1 << (k)) - 1))
  4. #define DESCARTAR_ULTIMOS_BITS(x, k) ((x) >> (k))
  5.  
  6. typedef struct CACHE {
  7.     unsigned int lineSize;
  8.     unsigned int associativity;
  9.     unsigned int numLines;
  10. } CACHE;
  11.  
  12. /*unsigned int log2(unsigned int x) {
  13.     unsigned long long int resultado = 0;
  14.     while (x >>= 1) resultado++;
  15.     return resultado;
  16. }*/
  17.  
  18. int main(void) {
  19.     unsigned long long int address = 0x123456789ABCDEFLL;
  20.     CACHE cacheconfig;
  21.     cacheconfig.lineSize = 20;
  22.     cacheconfig.numLines = 200;
  23.     cacheconfig.associativity = 4;
  24.  
  25.     unsigned int a = log2(cacheconfig.numLines / cacheconfig.associativity);
  26.     unsigned int b = log2(cacheconfig.lineSize);
  27.     long unsigned int Tag = DESCARTAR_ULTIMOS_BITS(OBTER_ULTIMOS_BITS(address, cacheconfig.lineSize), b);
  28.     long unsigned int Index = DESCARTAR_ULTIMOS_BITS(OBTER_ULTIMOS_BITS(address, b + a), b);
  29.     long unsigned int Dado = OBTER_ULTIMOS_BITS(address, b);
  30.  
  31. 	printf("%lu,%lu,%lu", Tag, Index, Dado);
  32. 	return 0;
  33. }
  34.  
Success #stdin #stdout 0s 2168KB
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48350,30,15
https://ideone.com/id1Q2O
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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