qemu/tests/tcg/mips/mipsr5900/divu1.c
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   1/*
   2 * Test R5900-specific DIVU1.
   3 */
   4
   5#include <stdio.h>
   6#include <inttypes.h>
   7#include <assert.h>
   8
   9struct quotient_remainder { uint32_t quotient, remainder; };
  10
  11static struct quotient_remainder divu1(uint32_t rs, uint32_t rt)
  12{
  13    uint32_t lo, hi;
  14
  15    __asm__ __volatile__ (
  16            "    divu1 $0, %2, %3\n"
  17            "    mflo1 %0\n"
  18            "    mfhi1 %1\n"
  19            : "=r" (lo), "=r" (hi)
  20            : "r" (rs), "r" (rt));
  21
  22    assert(rs / rt == lo);
  23    assert(rs % rt == hi);
  24
  25    return (struct quotient_remainder) { .quotient = lo, .remainder = hi };
  26}
  27
  28static void verify_divu1(uint32_t rs, uint32_t rt,
  29                         uint32_t expected_quotient,
  30                         uint32_t expected_remainder)
  31{
  32    struct quotient_remainder qr = divu1(rs, rt);
  33
  34    assert(qr.quotient == expected_quotient);
  35    assert(qr.remainder == expected_remainder);
  36}
  37
  38int main()
  39{
  40    verify_divu1(0, 1, 0, 0);
  41    verify_divu1(1, 1, 1, 0);
  42    verify_divu1(1, 2, 0, 1);
  43    verify_divu1(17, 19, 0, 17);
  44    verify_divu1(19, 17, 1, 2);
  45    verify_divu1(77773, 101, 770, 3);
  46
  47    return 0;
  48}
  49