Method opcode4Handler

Source/Common/PPC/PowerPCDisassembler.cpp:327–495

handles all for opcode 4

// handles all for opcode 4
std::string PowerPCDisassembler::opcode4Handler(const u32 binary)
{
  u32 d = ValueAtBits(binary, 6, 5);
  u32 a = ValueAtBits(binary, 11, 5);
  u32 b = ValueAtBits(binary, 16, 5);
  u32 c = ValueAtBits(binary, 21, 5);

  u32 w = ValueAtBits(binary, 21, 1);
  u32 i = ValueAtBits(binary, 22, 3);

  u32 ext_5 = ValueAtBits(binary, 26, 5);
  u32 ext_6 = ValueAtBits(binary, 25, 6);
  u32 ext_10 = ValueAtBits(binary, 21, 10);

  switch (ext_5)
  {
  case 0:
    switch (ext_10)
    {
    case 0:
      if (d >> 2 != 0)
      {
        return "ps_cmpu0 " + Alias(d >> 2, "cr") + ", " + Alias(a, "p") + ", " + Alias(b, "p");
      }
      return "ps_cmpu0 " + Alias(a, "p") + ", " + Alias(b, "p");
    case 32:
      if (d >> 2 != 0)
      {
        return "ps_cmpo0 " + Alias(d >> 2, "cr") + ", " + Alias(a, "p") + ", " + Alias(b, "p");
      }
      return "ps_cmpo0 " + Alias(a, "p") + ", " + Alias(b, "p");
    case 64:
      if (d >> 2 != 0)
      {
        return "ps_cmpu1 " + Alias(d >> 2, "cr") + ", " + Alias(a, "p") + ", " + Alias(b, "p");
      }
      return "ps_cmpu1 " + Alias(a, "p") + ", " + Alias(b, "p");
    case 96:
      if (d >> 2 != 0)
      {
        return "ps_cmpo1 " + Alias(d >> 2, "cr") + ", " + Alias(a, "p") + ", " + Alias(b, "p");
      }
      return "ps_cmpo1 " + Alias(a, "p") + ", " + Alias(b, "p");
    default:
      break;
    }
    return "ps_0 ---";
  case 1:
    return "ps_1 ---";
  case 2:
    return "ps_2 ---";
  case 3:
    return "ps_3 ---";
  case 4:
    return "ps_4 ---";
  case 5:
    return "ps_5 ---";
  case 6: