cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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test_sub.c (490B)

      1#include <stdio.h>
      2
      3int main(void)
      4{
      5    int a, b;
      6    int result;
      7
      8    a = 0x100;
      9    b = 0x100;
     10    result = 0x0;
     11    __asm
     12    ("l.sub %0, %0, %1\n\t"
     13     : "+r"(a)
     14     : "r"(b)
     15    );
     16    if (a != result) {
     17        printf("sub error\n");
     18        return -1;
     19    }
     20
     21    a = 0xffff;
     22    b = 0x1;
     23    result = 0xfffe;
     24    __asm
     25    ("l.sub %0, %0, %1\n\t"
     26     : "+r"(a)
     27     : "r"(b)
     28    );
     29    if (a != result) {
     30        printf("sub error\n");
     31        return -1;
     32    }
     33
     34    return 0;
     35}