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_addwc.c (971B)

      1#include<stdio.h>
      2#include<assert.h>
      3
      4int main()
      5{
      6    int rd, rs, rt;
      7    int dspi, dspo;
      8    int result;
      9
     10    rs     = 0x10FF01FF;
     11    rt     = 0x10010001;
     12    dspi   = 0x00002000;
     13    result = 0x21000201;
     14    __asm
     15        ("wrdsp %3\n"
     16         "addwc %0, %1, %2\n\t"
     17         : "=r"(rd)
     18         : "r"(rs), "r"(rt), "r"(dspi)
     19        );
     20    assert(rd == result);
     21
     22    rs     = 0xFFFF1111;
     23    rt     = 0x00020001;
     24    dspi   = 0x00;
     25    result = 0x00011112;
     26    __asm
     27        ("wrdsp %3\n"
     28         "addwc %0, %1, %2\n\t"
     29         : "=r"(rd)
     30         : "r"(rs), "r"(rt), "r"(dspi)
     31        );
     32    assert(rd == result);
     33
     34    rs     = 0x8FFF1111;
     35    rt     = 0x80020001;
     36    dspi   = 0x00;
     37    result = 0x10011112;
     38    __asm
     39        ("wrdsp %4\n"
     40         "addwc %0, %2, %3\n\t"
     41         "rddsp %1\n\t"
     42         : "=r"(rd), "=r"(dspo)
     43         : "r"(rs), "r"(rt), "r"(dspi)
     44        );
     45    assert(rd == result);
     46    assert(((dspo >> 20) & 0x01) == 1);
     47
     48    return 0;
     49}