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_bposge32.c (732B)

      1#include<stdio.h>
      2#include<assert.h>
      3
      4int main()
      5{
      6    int dsp, sum;
      7    int result;
      8
      9    dsp =  0x20;
     10    sum = 0x01;
     11    result = 0x02;
     12
     13    __asm
     14        ("wrdsp %1\n\t"
     15         "bposge32 test1\n\t"
     16         "nop\n\t"
     17         "addi %0, 0xA2\n\t"
     18         "nop\n\t"
     19         "test1:\n\t"
     20         "addi %0, 0x01\n\t"
     21         : "+r"(sum)
     22         : "r"(dsp)
     23        );
     24    assert(sum == result);
     25
     26    dsp =  0x10;
     27    sum = 0x01;
     28    result = 0xA4;
     29
     30    __asm
     31        ("wrdsp %1\n\t"
     32         "bposge32 test2\n\t"
     33         "nop\n\t"
     34         "addi %0, 0xA2\n\t"
     35         "nop\n\t"
     36         "test2:\n\t"
     37         "addi %0, 0x01\n\t"
     38         : "+r"(sum)
     39         : "r"(dsp)
     40        );
     41    assert(sum == result);
     42
     43    return 0;
     44}