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_r5900_mflohi1.c (865B)

      1/*
      2 * Test R5900-specific MFLO1 and MFHI1.
      3 */
      4
      5#include <stdio.h>
      6#include <inttypes.h>
      7#include <assert.h>
      8
      9int main()
     10{
     11    int32_t rs  = 12207031, rt  = 305175781;
     12    int32_t rs1 = 32452867, rt1 = 49979687;
     13    int64_t lo, hi, lo1, hi1;
     14    int64_t r, r1;
     15
     16    /* Test both LO/HI and LO1/HI1 to verify separation. */
     17    __asm__ __volatile__ (
     18            "    mult $0, %4, %5\n"
     19            "    mult1 $0, %6, %7\n"
     20            "    mflo %0\n"
     21            "    mfhi %1\n"
     22            "    mflo1 %2\n"
     23            "    mfhi1 %3\n"
     24            : "=r" (lo),  "=r" (hi),
     25              "=r" (lo1), "=r" (hi1)
     26            : "r" (rs),  "r" (rt),
     27              "r" (rs1), "r" (rt1));
     28    r  = ((int64_t)hi  << 32) | (uint32_t)lo;
     29    r1 = ((int64_t)hi1 << 32) | (uint32_t)lo1;
     30
     31    assert(r  == 3725290219116211);
     32    assert(r1 == 1621984134912629);
     33
     34    return 0;
     35}