static (int gprSizeBits, string regStr) GetRegInfo(OpCodeOperandKindDef def, bool kr = false)
{
string suffix;
if (def.RegPlus1)
{
suffix = "p1";
}
else if (def.RegPlus3)
{
suffix = "p3";
}
else
{
suffix = string.Empty;
}
var(gprSizeBits, regStr) = def.Register switch {
Register.AL => (8, "r8"),
Register.AX => (16, "r16"),
Register.EAX => (32, "r32"),
Register.RAX => (64, "r64"),
Register.ES => (0, "Sreg"),
Register.MM0 => (0, "mm"),
Register.XMM0 => (0, "xmm"),
Register.YMM0 => (0, "ymm"),
Register.ZMM0 => (0, "zmm"),
Register.TMM0 => (0, "tmm"),
Register.BND0 => (0, "bnd"),
Register.K0 => (0, suffix == string.Empty && kr ? "kr" : "k"),
Register.CR0 => (0, "cr"),
Register.DR0 => (0, "dr"),
Register.TR0 => (0, "tr"),
Register.ST0 => (0, "sti"),
_ => throw new InvalidOperationException(),
};
return(gprSizeBits, regStr + suffix);
}
public OpCodeOperandKindDef[] Read()
{
var defs = new List <OpCodeOperandKindDef>();
var argCounts = new Dictionary <string, int>(StringComparer.Ordinal)
{
{ "br-near", 2 },
{ "br-near-x", 1 },
{ "br-disp", 1 },
{ "br-far", 1 },
{ "imm8-const", 1 },
{ "imm", 2 },
{ "imp-reg", 1 },
{ "isx", 2 },
{ "opcode", 1 },
{ "reg", 1 },
{ "rm-reg", 1 },
{ "vvvv", 1 },
{ "rm", 1 },
{ "vsib", 2 },
};
var lines = File.ReadAllLines(filename);
for (int i = 0; i < lines.Length; i++)
{
var line = lines[i];
if (line.Length == 0 || line[0] == '#')
{
continue;
}
var parts = line.Split(',').Select(a => a.Trim()).ToArray();
if (parts.Length != 3)
{
throw new InvalidOperationException($"Line {i + 1}: Expected 2 commas");
}
if (!toOpCodeOperandKind.TryGetValue(parts[0], out var enumValue))
{
throw new InvalidOperationException($"Line {i + 1}: Invalid enum name or duplicate def: {parts[0]}");
}
toOpCodeOperandKind.Remove(parts[0]);
var flags = OpCodeOperandKindDefFlags.None;
foreach (var flagStr in parts[2].Split(' ', StringSplitOptions.RemoveEmptyEntries))
{
flags |= flagStr switch {
"lock-bit" => OpCodeOperandKindDefFlags.LockBit,
"p1" => OpCodeOperandKindDefFlags.RegPlus1,
"p3" => OpCodeOperandKindDefFlags.RegPlus3,
"mem" => OpCodeOperandKindDefFlags.Memory,
"mpx" => OpCodeOperandKindDefFlags.MPX,
"mib" => OpCodeOperandKindDefFlags.MIB,
"sib" => OpCodeOperandKindDefFlags.SibRequired,
_ => throw new InvalidOperationException($"Line {i + 1}: Invalid flag: {flagStr}"),
};
}
var(key, value) = ParserUtils.GetKeyValue(parts[1]);
argCounts.TryGetValue(key, out var argCount);
var args = value == string.Empty ? Array.Empty <string>() : value.Split(';');
if (args.Length != argCount)
{
throw new InvalidOperationException($"Line {i + 1}: Expected {argCount} args but got {args.Length}: {value}");
}
OpCodeOperandKindDef def;
int arg1, arg2;
Register register;
switch (key)
{
case "none":
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.None, 0, 0, Register.None);
break;
case "br-near":
arg1 = int.Parse(args[0]);
arg2 = int.Parse(args[1]);
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.NearBranch, arg1, arg2, Register.None);
break;
case "br-near-x":
arg1 = int.Parse(args[0]);
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.Xbegin, arg1, 0, Register.None);
break;
case "br-disp":
arg1 = int.Parse(args[0]);
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.AbsNearBranch, arg1, 0, Register.None);
break;
case "br-far":
arg1 = int.Parse(args[0]);
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.FarBranch, arg1, 0, Register.None);
break;
case "imm4":
flags |= OpCodeOperandKindDefFlags.M2Z;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.Immediate, 4, 4, Register.None);
break;
case "imm8-const":
arg1 = int.Parse(args[0]);
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.ImpliedConst, arg1, 0, Register.None);
break;
case "imm":
arg1 = int.Parse(args[0]);
arg2 = int.Parse(args[1]);
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.Immediate, arg1, arg2, Register.None);
break;
case "imp-reg":
register = (Register)toRegister[args[0]].Value;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.ImpliedRegister, 0, 0, register);
break;
case "seg-rbx-al":
flags |= OpCodeOperandKindDefFlags.Memory;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.SegRBX, 0, 0, Register.None);
break;
case "seg-rsi":
flags |= OpCodeOperandKindDefFlags.Memory;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.SegRSI, 0, 0, Register.None);
break;
case "seg-rdi":
flags |= OpCodeOperandKindDefFlags.Memory;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.SegRDI, 0, 0, Register.None);
break;
case "es-rdi":
flags |= OpCodeOperandKindDefFlags.Memory;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.ESRDI, 0, 0, Register.None);
break;
case "isx":
register = (Register)toRegister[args[0]].Value;
switch (int.Parse(args[1]))
{
case 4: break;
case 5: flags |= OpCodeOperandKindDefFlags.Is5; break;
default: throw new InvalidOperationException();
}
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.RegImm, 0, 0, register);
break;
case "opcode":
register = (Register)toRegister[args[0]].Value;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.RegOpCode, 0, 0, register);
break;
case "reg":
flags |= OpCodeOperandKindDefFlags.Modrm;
register = (Register)toRegister[args[0]].Value;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.RegModrmReg, 0, 0, register);
break;
case "rm-reg":
flags |= OpCodeOperandKindDefFlags.Modrm;
register = (Register)toRegister[args[0]].Value;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.RegModrmRm, 0, 0, register);
break;
case "vvvv":
register = (Register)toRegister[args[0]].Value;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.RegVvvvv, 0, 0, register);
break;
case "rm":
flags |= OpCodeOperandKindDefFlags.Modrm;
flags |= OpCodeOperandKindDefFlags.Memory;
register = (Register)toRegister[args[0]].Value;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.RegMemModrmRm, 0, 0, register);
break;
case "rm-mem":
flags |= OpCodeOperandKindDefFlags.Modrm;
flags |= OpCodeOperandKindDefFlags.Memory;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.MemModrmRm, 0, 0, Register.None);
break;
case "vsib":
flags |= OpCodeOperandKindDefFlags.Modrm;
flags |= OpCodeOperandKindDefFlags.Memory;
register = (Register)toRegister[args[0]].Value;
flags |= (int.Parse(args[1])) switch {
32 => OpCodeOperandKindDefFlags.Vsib32,
64 => OpCodeOperandKindDefFlags.Vsib64,
_ => throw new InvalidOperationException($"Line {i + 1}: Unknown vsib size: {args[1]}"),
};
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.MemModrmRm, 0, 0, register);
break;
case "moffs":
flags |= OpCodeOperandKindDefFlags.Memory;
def = new OpCodeOperandKindDef(enumValue, flags, OperandEncoding.MemOffset, 0, 0, Register.None);
break;
default:
throw new InvalidOperationException($"Line {i + 1}: Unknown key: {key}");
}
defs.Add(def);
}
if (toOpCodeOperandKind.Count != 0)
{
throw new InvalidOperationException($"Missing {nameof(OpCodeOperandKind)} definitions");
}
return(defs.OrderBy(a => a.EnumValue.Value).ToArray());
}