public void TestAssemblyLine()
{
Assert.IsTrue(
Float.GenerateAssemblyLine(0.200000002980232f)
.Last().Equals(
(".single", "0.2")
)
);
var x = Float.GenerateAssemblyLine(0x402E000007800000UL).ToArray();
Assert.IsTrue(
x.Last().Equals(
(".quad", "0x402E000007800000")
)
);
var y = Float.GenerateAssemblyLine(0.199999988079071f).ToArray();
Assert.IsTrue(
y.Last().Equals(
(".word", "0x3E4CCCCC")
)
);
var z = Float.GenerateAssemblyLine(15.0).ToArray();
Assert.IsTrue(
z.Last().Equals(
(".double", "15")
)
);
}
public IEnumerable <string> Disassemble(bool debugAddress = false)
{
var disassembler = new Disassembler(new DefaultDisassemblyFormatter(Symbols));
Func <string, string, string> formatPair = (left, right) =>
right == null
? $"\t{left}"
: $"\t{left.PadRight(16)}{right}";
Func <UInt32, Instruction, DisassemblerOutput, string> formatDisasm = (pc, insn, output) =>
!debugAddress
? formatPair(output.Opcode, output.Operands)
: formatPair(output.Opcode, (output.Operands ?? "").PadRight(32) + string.Format("# 0x{0:X8} 0x{2:X8} {1}", pc, Disassembler.DefaultWithoutPc.Disassemble(0, insn), insn.Word));
yield return("#include \"mips.h\"");
yield return("#define s8 $fp");
yield return("");
var x = 0;
yield return(formatPair("#", null));
foreach (var s in Sections)
{
yield return(formatPair($"# {s.Name}", string.Format("0x{0:X8} - 0x{1:X8} ({2,6:0.00} kb)", s.StartAddress, s.EndAddress, s.Size / 1024.0)));
if (x++ == 2)
{
yield return(formatPair("# [relocs]", string.Format("0x{0:X8} - 0x{1:X8} ({2,6:0.00} kb)", Sections[2].EndAddress, Sections[2].EndAddress + HeaderOffset, HeaderOffset / 1024.0)));
}
}
if (_oddities.Count > 0)
{
yield return(formatPair("#", null));
yield return(formatPair("# Oddities:", null));
foreach (var o in _oddities)
{
yield return(formatPair($"# - {o}", null));
}
}
yield return(formatPair("#", null));
yield return("");
yield return(formatPair(".set", "noreorder"));
yield return(formatPair(".set", "noat"));
yield return("");
for (var j = 0; j < Sections.Count; j++)
{
var section = Sections[j];
if (section.Size == 0)
{
continue;
}
UInt32 pc = section.StartAddress;
if (section.Id >= 1)
{
yield return("");
yield return("");
}
if (section.Id > 1)
{
yield return(formatPair(".section", $"{section.Name}"));
}
else
{
yield return(formatPair(section.Id == 1 ? ".data" : ".text", null));
}
yield return("");
switch (section.Id)
{
case 0:
foreach (var insn in section.Data.ToInstructions())
{
var symbol = Symbols.Lookup(pc);
if (symbol != null)
{
if (symbol.TypeHint.HasFlags(TypeHint.Function))
{
yield return("");
yield return(formatPair(".global", symbol.Name));
yield return(formatPair(".type", $"{symbol.Name}, @function"));
yield return("");
yield return(symbol.Name + ":");
}
else
{
var pattern = @" \+ \d+$";
var name = symbol.Name;
if (Regex.IsMatch(name, pattern))
{
name = Regex.Replace(name, pattern, "");
}
yield return(name + ":");
}
}
yield return(formatDisasm(pc, insn, disassembler.Disassemble(pc, insn)));
pc += 4;
}
break;
case 1:
case 2:
for (var i = 0; i < section.Data.Count; i++)
{
var symbol = Symbols.Lookup(pc + (UInt32)i);
if (symbol != null)
{
var stuffs = new List <string>
{
"",
formatPair(".type", $"{symbol.Name}, @object"),
symbol.Name + ":"
};
var reloc = Relocations.Lookup(pc + (UInt32)i);
var doByte = false;
Action <int> size = (s) =>
stuffs.Insert(2, formatPair(".size", $"{symbol.Name}, {s}"));
bool checkNoSymbolsForNextNbytes(int length) =>
Enumerable.Range(1, length - 1)
.Select(y => Symbols.Lookup(pc + (UInt32)(i + y)))
.All(y => y == null);
if (reloc != null && checkNoSymbolsForNextNbytes(4))
{
size(4);
stuffs.Add(formatPair(".word", Symbols.Lookup(reloc.Address).Name));
i += 3;
}
else if (symbol.TypeHint.HasFlags(TypeHint.HalfWord | TypeHint.HalfWordUnsigned) && checkNoSymbolsForNextNbytes(2))
{
size(2);
stuffs.Add(formatPair(".short", string.Format("0x{0:X4}", section.Data[i] << 8 | section.Data[i + 1])));
i++;
}
else if (symbol.TypeHint.HasFlags(TypeHint.Word | TypeHint.WordUnsigned) && checkNoSymbolsForNextNbytes(4))
{
size(4);
stuffs.Add(formatPair(".word", string.Format("0x{0:X8}", Utilities.ReadU32(section.Data, i))));
i += 3;
}
else if (symbol.TypeHint.HasFlags(TypeHint.DoubleWord) && checkNoSymbolsForNextNbytes(8))
{
size(8);
stuffs.Add(formatPair(".quad", string.Format("0x{0:X16}", Utilities.ReadU32(section.Data, i))));
i += 7;
}
else if (symbol.TypeHint.HasFlags(TypeHint.Single) && checkNoSymbolsForNextNbytes(4))
{
size(4);
var flt = BitConverter.ToSingle(BitConverter.GetBytes(Utilities.ReadU32(section.Data, i)), 0);
stuffs.AddRange(Float.GenerateAssemblyLine(flt).Select(y => formatPair(y.left, y.right)));
i += 3;
}
else if (symbol.TypeHint.HasFlags(TypeHint.Double) && checkNoSymbolsForNextNbytes(8))
{
size(8);
var flt = BitConverter.ToDouble(BitConverter.GetBytes(Utilities.ReadU64(section.Data, i)), 0);
stuffs.AddRange(Float.GenerateAssemblyLine(flt).Select(y => formatPair(y.left, y.right)));
i += 7;
}
else
{
doByte = true;
}
foreach (var q in stuffs)
{
yield return(q);
}
if (!doByte)
{
continue;
}
}
else
{
var reloc = Relocations.Lookup(pc + (UInt32)i);
if (reloc != null)
{
yield return(formatPair(".word", Symbols.Lookup(reloc.Address).Name));
i += 3;
continue;
}
}
yield return(formatPair(".byte", string.Format("0x{0:X2}", section.Data[i])));
}
break;
case 3:
var bssSyms = Symbols
.Where(s => s.Address >= section.StartAddress && s.Address < section.EndAddress)
.OrderBy(s => s.Address)
.ToArray();
var symIdx = 0;
if (bssSyms.Length == 0)
{
yield return(formatPair(".space", $"{Sections[3].Size}"));
break;
}
for (var ptr = 0; ptr < section.Size;)
{
long curAddr;
var sym = bssSyms[symIdx];
if ((curAddr = section.StartAddress + ptr) < sym.Address)
{
var spaceSize = bssSyms[symIdx].Address - curAddr;
yield return(formatPair(".space", $"{spaceSize}"));
ptr += (int)spaceSize;
}
else
{
var size = (symIdx + 1 == bssSyms.Length
? section.EndAddress
: bssSyms[symIdx + 1].Address) - sym.Address;
var right = $"{sym.Name},{size},1";
if (debugAddress)
{
right = right.PadRight(24) + string.Format("# 0x{0:X8}", ptr + section.StartAddress);
}
yield return(formatPair(".local", sym.Name));
yield return(formatPair(".comm", right));
ptr += (int)size;
symIdx++;
}
}
break;
}
}
}