Method Opcode59Handler

Source/Common/PPC/PowerPCDisassembler.cpp:1406–1457

handles all for opcode 59

// handles all for opcode 59
std::string PowerPCDisassembler::Opcode59Handler(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 rc = ValueAtBits(binary, 31, 1);
  std::string mnemonic;

  switch (ext_5)
  {
  case 18:
    if (c)
      return ILL(binary);
    return MA("fdivs", rc) + " " + Alias(d, "f") + ", " + Alias(a, "f") + ", " + Alias(b, "f");
  case 20:
    if (c)
      return ILL(binary);
    return MA("fsubs", rc) + " " + Alias(d, "f") + ", " + Alias(a, "f") + ", " + Alias(b, "f");
  case 21:
    if (c)
      return ILL(binary);
    return MA("fadds", rc) + " " + Alias(d, "f") + ", " + Alias(a, "f") + ", " + Alias(b, "f");
  case 22:
    if (a || c)
      return ILL(binary);
    return MA("fsqrts", rc) + " " + Alias(d, "f") + ", " + Alias(b, "f");
  case 24:
    if (a || c)
      return ILL(binary);
    return MA("fres", rc) + " " + Alias(d, "f") + ", " + Alias(b, "f");
  case 25:
    if (b)
      return ILL(binary);
    return MA("fmuls", rc) + " " + Alias(d, "f") + ", " + Alias(a, "f") + ", " + Alias(c, "f");
  case 28:
    return MA("fmsubs", rc) + " " + Alias(d, "f") + ", " + Alias(a, "f") + ", " + Alias(c, "f") +
           ", " + Alias(b, "f");
  case 29:
    return MA("fmadds", rc) + " " + Alias(d, "f") + ", " + Alias(a, "f") + ", " + Alias(c, "f") +
           ", " + Alias(b, "f");
  case 30:
    return MA("fnmsubs", rc) + " " + Alias(d, "f") + ", " + Alias(a, "f") + ", " + Alias(c, "f") +
           ", " + Alias(b, "f");
  case 31:
    return MA("fnmadds", rc) + " " + Alias(d, "f") + ", " + Alias(a, "f") + ", " + Alias(c, "f") +
           ", " + Alias(b, "f");
  default:
    return ILL(binary);
  }
}

// handles all for opcode 63
std::string PowerPCDisassembler::Opcode63Handler(const u32 binary)