tests/tcg/mips/user/isa/r5900/test_r5900_maddu.c

   1 /*
   2  * Test R5900-specific three-operand MADDU and MADDU1.
   3  */
   4
   5 #include <stdio.h>
   6 #include <inttypes.h>
   7 #include <assert.h>
   8
   9 uint64_t maddu(uint64_t a, uint32_t rs, uint32_t rt)
  10 {
  11     uint32_t lo = a;
  12     uint32_t hi = a >> 32;
  13     uint32_t rd;
  14     uint64_t r;
  15
  16     __asm__ __volatile__ (
  17             "    mtlo  %5\n"
  18             "    mthi  %6\n"
  19             "    maddu %0, %3, %4\n"
  20             "    mflo  %1\n"
  21             "    mfhi  %2\n"
  22             : "=r" (rd), "=r" (lo), "=r" (hi)
  23             : "r" (rs), "r" (rt), "r" (lo), "r" (hi));
  24     r = ((uint64_t)hi << 32) | (uint32_t)lo;
  25
  26     assert(a + (uint64_t)rs * rt == r);
  27     assert(rd == lo);
  28
  29     return r;
  30 }
  31
  32 uint64_t maddu1(uint64_t a, uint32_t rs, uint32_t rt)
  33 {
  34     uint32_t lo = a;
  35     uint32_t hi = a >> 32;
  36     uint32_t rd;
  37     uint64_t r;
  38
  39     __asm__ __volatile__ (
  40             "    mtlo1  %5\n"
  41             "    mthi1  %6\n"
  42             "    maddu1 %0, %3, %4\n"
  43             "    mflo1  %1\n"
  44             "    mfhi1  %2\n"
  45             : "=r" (rd), "=r" (lo), "=r" (hi)
  46             : "r" (rs), "r" (rt), "r" (lo), "r" (hi));
  47     r = ((uint64_t)hi << 32) | (uint32_t)lo;
  48
  49     assert(a + (uint64_t)rs * rt == r);
  50     assert(rd == lo);
  51
  52     return r;
  53 }
  54
  55 static int64_t maddu_variants(int64_t a, int32_t rs, int32_t rt)
  56 {
  57     int64_t rd  = maddu(a, rs, rt);
  58     int64_t rd1 = maddu1(a, rs, rt);
  59
  60     assert(rd == rd1);
  61
  62     return rd;
  63 }
  64
  65 int main()
  66 {
  67     assert(maddu_variants(13, 17, 19) == 336);
  68
  69     return 0;
  70 }