Method Opcode63Handler

Source/Common/PPC/PowerPCDisassembler.cpp:1460–1591

handles all for opcode 63

// handles all for opcode 63
std::string PowerPCDisassembler::Opcode63Handler(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 ext_5 = ValueAtBits(binary, 26, 5);
  u32 ext_10 = ValueAtBits(binary, 21, 10);
  u32 rc = ValueAtBits(binary, 31, 1);
  std::string mnemonic;

  switch (ext_5)
  {
  case 0:
    switch (ext_10)
    {
    case 0:
      if ((d & 3) || rc)
        return ILL(binary);
      return "fcmpu " + Alias(d >> 2, "cr") + ", " + Alias(a, "f") + ", " + Alias(b, "f");
    case 32:
      if ((d & 3) || rc)
        return ILL(binary);
      return "fcmpo " + Alias(d >> 2, "cr") + ", " + Alias(a, "f") + ", " + Alias(b, "f");
    case 64:
      if ((d & 3) || (a & 3) || b || rc)
        return ILL(binary);
      return "mcrfs " + Alias(d >> 2, "cr") + ", " + Alias(a >> 2, "cr");
    default:
      return ILL(binary);
    }
  case 6:
    switch (ext_10)
    {
    case 38:
      if (a || b)
        return ILL(binary);
      return MA("mtfsb1", rc) + " " + TS(d);
    case 70:
      if (a || b)
        return ILL(binary);
      return MA("mtfsb0", rc) + " " + TS(d);
    case 134:
      if ((a & 0xF) || (b & 1) || (d & 3))
        return ILL(binary);
      return MA("mtfsfi", rc) + " " + Alias(d >> 2, "cr") + "," + TS(b >> 1);
    default:
      return ILL(binary);
    }
  case 7:
    switch (ext_10)
    {
    case 583:
      if (a || b)
        return ILL(binary);
      return MA("mffs", rc) + " " + Alias(d, "r");
    case 711:
      if ((d >> 4) || (a & 1))