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_dsp_r1_modsub.c (512B)

      1#include<stdio.h>
      2#include<assert.h>
      3
      4int main()
      5{
      6    int rd, rs, rt;
      7    int result;
      8
      9    rs     = 0xFFFFFFFF;
     10    rt     = 0x000000FF;
     11    result = 0xFFFFFF00;
     12    __asm
     13        ("modsub %0, %1, %2\n\t"
     14         : "=r"(rd)
     15         : "r"(rs), "r"(rt)
     16        );
     17    assert(result == rd);
     18
     19    rs     = 0x00000000;
     20    rt     = 0x00CD1FFF;
     21    result = 0x0000CD1F;
     22    __asm
     23        ("modsub %0, %1, %2\n\t"
     24         : "=r"(rd)
     25         : "r"(rs), "r"(rt)
     26        );
     27    assert(result == rd);
     28
     29    return 0;
     30}