void InstructionInfo_GetOpAccess_throws_if_invalid_input()
{
Instruction instr = default;
instr.Code = Code.Nopd;
var info = new InstructionInfoFactory().GetInfo(instr);
Assert.Throws <ArgumentOutOfRangeException>(() => info.GetOpAccess(-1));
Assert.Throws <ArgumentOutOfRangeException>(() => info.GetOpAccess(IcedConstants.MaxOpCount));
}
protected void TestInstructionInfo(int bitness, string hexBytes, Code code, DecoderOptions options, int lineNo, InstructionInfoTestCase testCase)
{
var codeBytes = HexUtils.ToByteArray(hexBytes);
Instruction instruction;
if (testCase.IsSpecial)
{
if (bitness == 16 && code == Code.Popw_CS && hexBytes == "0F")
{
instruction = default;
instruction.Code = Code.Popw_CS;
instruction.Op0Kind = OpKind.Register;
instruction.Op0Register = Register.CS;
instruction.CodeSize = CodeSize.Code16;
instruction.Length = 1;
}
else if (code <= Code.DeclareQword)
{
instruction = default;
instruction.Code = code;
instruction.DeclareDataCount = 1;
Assert.Equal(64, bitness);
instruction.CodeSize = CodeSize.Code64;
switch (code)
{
case Code.DeclareByte:
Assert.Equal("66", hexBytes);
instruction.SetDeclareByteValue(0, 0x66);
break;
case Code.DeclareWord:
Assert.Equal("6644", hexBytes);
instruction.SetDeclareWordValue(0, 0x4466);
break;
case Code.DeclareDword:
Assert.Equal("664422EE", hexBytes);
instruction.SetDeclareDwordValue(0, 0xEE224466);
break;
case Code.DeclareQword:
Assert.Equal("664422EE12345678", hexBytes);
instruction.SetDeclareQwordValue(0, 0x78563412EE224466);
break;
default: throw new InvalidOperationException();
}
}
else
{
var decoder = CreateDecoder(bitness, codeBytes, options);
instruction = decoder.Decode();
if (codeBytes.Length > 1 && codeBytes[0] == 0x9B && instruction.Length == 1)
{
instruction = decoder.Decode();
instruction.Code = instruction.Code switch {
Code.Fnstenv_m14byte => Code.Fstenv_m14byte,
Code.Fnstenv_m28byte => Code.Fstenv_m28byte,
Code.Fnstcw_m2byte => Code.Fstcw_m2byte,
Code.Fneni => Code.Feni,
Code.Fndisi => Code.Fdisi,
Code.Fnclex => Code.Fclex,
Code.Fninit => Code.Finit,
Code.Fnsetpm => Code.Fsetpm,
Code.Fnsave_m94byte => Code.Fsave_m94byte,
Code.Fnsave_m108byte => Code.Fsave_m108byte,
Code.Fnstsw_m2byte => Code.Fstsw_m2byte,
Code.Fnstsw_AX => Code.Fstsw_AX,
Code.Fnstdw_AX => Code.Fstdw_AX,
Code.Fnstsg_AX => Code.Fstsg_AX,
_ => throw new InvalidOperationException(),
};
}
else
{
throw new InvalidOperationException();
}
}
}
else
{
var decoder = CreateDecoder(bitness, codeBytes, options);
instruction = decoder.Decode();
}
Assert.Equal(code, instruction.Code);
Assert.Equal(testCase.StackPointerIncrement, instruction.StackPointerIncrement);
var info = new InstructionInfoFactory().GetInfo(instruction);
Assert.Equal(testCase.Encoding, info.Encoding);
Assert.Equal(testCase.CpuidFeatures, info.CpuidFeatures);
Assert.Equal(testCase.RflagsRead, info.RflagsRead);
Assert.Equal(testCase.RflagsUndefined, info.RflagsUndefined);
Assert.Equal(testCase.RflagsWritten, info.RflagsWritten);
Assert.Equal(testCase.RflagsCleared, info.RflagsCleared);
Assert.Equal(testCase.RflagsSet, info.RflagsSet);
Assert.Equal(testCase.IsPrivileged, info.IsPrivileged);
Assert.Equal(testCase.IsStackInstruction, info.IsStackInstruction);
Assert.Equal(testCase.IsSaveRestoreInstruction, info.IsSaveRestoreInstruction);
Assert.Equal(testCase.FlowControl, info.FlowControl);
Assert.Equal(testCase.Op0Access, info.Op0Access);
Assert.Equal(testCase.Op1Access, info.Op1Access);
Assert.Equal(testCase.Op2Access, info.Op2Access);
Assert.Equal(testCase.Op3Access, info.Op3Access);
Assert.Equal(testCase.Op4Access, info.Op4Access);
Assert.Equal(
new HashSet <UsedMemory>(testCase.UsedMemory, UsedMemoryEqualityComparer.Instance),
new HashSet <UsedMemory>(info.GetUsedMemory(), UsedMemoryEqualityComparer.Instance));
Assert.Equal(
new HashSet <UsedRegister>(GetUsedRegisters(testCase.UsedRegisters), UsedRegisterEqualityComparer.Instance),
new HashSet <UsedRegister>(GetUsedRegisters(info.GetUsedRegisters()), UsedRegisterEqualityComparer.Instance));
Static.Assert(IcedConstants.MaxOpCount == 5 ? 0 : -1);
Debug.Assert(instruction.OpCount <= IcedConstants.MaxOpCount);
for (int i = 0; i < instruction.OpCount; i++)
{
switch (i)
{
case 0:
Assert.Equal(testCase.Op0Access, info.GetOpAccess(i));
break;
case 1:
Assert.Equal(testCase.Op1Access, info.GetOpAccess(i));
break;
case 2:
Assert.Equal(testCase.Op2Access, info.GetOpAccess(i));
break;
case 3:
Assert.Equal(testCase.Op3Access, info.GetOpAccess(i));
break;
case 4:
Assert.Equal(testCase.Op4Access, info.GetOpAccess(i));
break;
default:
throw new InvalidOperationException();
}
}
for (int i = instruction.OpCount; i < IcedConstants.MaxOpCount; i++)
{
Assert.Equal(OpAccess.None, info.GetOpAccess(i));
}
Assert.Equal(RflagsBits.None, info.RflagsWritten & (info.RflagsCleared | info.RflagsSet | info.RflagsUndefined));
Assert.Equal(RflagsBits.None, info.RflagsCleared & (info.RflagsWritten | info.RflagsSet | info.RflagsUndefined));
Assert.Equal(RflagsBits.None, info.RflagsSet & (info.RflagsWritten | info.RflagsCleared | info.RflagsUndefined));
Assert.Equal(RflagsBits.None, info.RflagsUndefined & (info.RflagsWritten | info.RflagsCleared | info.RflagsSet));
Assert.Equal(info.RflagsWritten | info.RflagsCleared | info.RflagsSet | info.RflagsUndefined, info.RflagsModified);
var info2 = new InstructionInfoFactory().GetInfo(instruction, InstructionInfoOptions.None);
CheckEqual(ref info, ref info2, hasRegs2: true, hasMem2: true);
info2 = new InstructionInfoFactory().GetInfo(instruction, InstructionInfoOptions.NoMemoryUsage);
CheckEqual(ref info, ref info2, hasRegs2: true, hasMem2: false);
info2 = new InstructionInfoFactory().GetInfo(instruction, InstructionInfoOptions.NoRegisterUsage);
CheckEqual(ref info, ref info2, hasRegs2: false, hasMem2: true);
info2 = new InstructionInfoFactory().GetInfo(instruction, InstructionInfoOptions.NoRegisterUsage | InstructionInfoOptions.NoMemoryUsage);
CheckEqual(ref info, ref info2, hasRegs2: false, hasMem2: false);
Assert.Equal(info.Encoding, instruction.Code.Encoding());
#if ENCODER && OPCODE_INFO
Assert.Equal(code.ToOpCode().Encoding, instruction.Code.Encoding());
#endif
Assert.Equal(info.CpuidFeatures, instruction.Code.CpuidFeatures());
Assert.Equal(info.FlowControl, instruction.Code.FlowControl());
Assert.Equal(info.IsPrivileged, instruction.Code.IsPrivileged());
Assert.Equal(info.IsStackInstruction, instruction.Code.IsStackInstruction());
Assert.Equal(info.IsSaveRestoreInstruction, instruction.Code.IsSaveRestoreInstruction());
Assert.Equal(info.Encoding, instruction.Encoding);
Assert.Equal(info.CpuidFeatures, instruction.CpuidFeatures);
Assert.Equal(info.FlowControl, instruction.FlowControl);
Assert.Equal(info.IsPrivileged, instruction.IsPrivileged);
Assert.Equal(info.IsStackInstruction, instruction.IsStackInstruction);
Assert.Equal(info.IsSaveRestoreInstruction, instruction.IsSaveRestoreInstruction);
Assert.Equal(info.RflagsRead, instruction.RflagsRead);
Assert.Equal(info.RflagsWritten, instruction.RflagsWritten);
Assert.Equal(info.RflagsCleared, instruction.RflagsCleared);
Assert.Equal(info.RflagsSet, instruction.RflagsSet);
Assert.Equal(info.RflagsUndefined, instruction.RflagsUndefined);
Assert.Equal(info.RflagsModified, instruction.RflagsModified);
}
protected void TestInstructionInfo(int bitness, string hexBytes, Code code, DecoderOptions options, int lineNo, InstructionInfoTestCase testCase)
{
var codeBytes = HexUtils.ToByteArray(hexBytes);
Instruction instruction;
if (testCase.IsSpecial)
{
if (bitness == 16 && code == Code.Popw_CS && hexBytes == "0F")
{
instruction = default;
instruction.Code = Code.Popw_CS;
instruction.Op0Kind = OpKind.Register;
instruction.Op0Register = Register.CS;
instruction.CodeSize = CodeSize.Code16;
instruction.Length = 1;
}
else if (code <= Code.DeclareQword)
{
instruction = default;
instruction.Code = code;
instruction.DeclareDataCount = 1;
Assert.Equal(64, bitness);
instruction.CodeSize = CodeSize.Code64;
switch (code)
{
case Code.DeclareByte:
Assert.Equal("66", hexBytes);
instruction.SetDeclareByteValue(0, 0x66);
break;
case Code.DeclareWord:
Assert.Equal("6644", hexBytes);
instruction.SetDeclareWordValue(0, 0x4466);
break;
case Code.DeclareDword:
Assert.Equal("664422EE", hexBytes);
instruction.SetDeclareDwordValue(0, 0xEE224466);
break;
case Code.DeclareQword:
Assert.Equal("664422EE12345678", hexBytes);
instruction.SetDeclareQwordValue(0, 0x78563412EE224466);
break;
default: throw new InvalidOperationException();
}
}
else
{
var decoder = CreateDecoder(bitness, codeBytes, options);
instruction = decoder.Decode();
if (codeBytes.Length > 1 && codeBytes[0] == 0x9B && instruction.Length == 1)
{
instruction = decoder.Decode();
instruction.Code = instruction.Code switch {
Code.Fnstenv_m14byte => Code.Fstenv_m14byte,
Code.Fnstenv_m28byte => Code.Fstenv_m28byte,
Code.Fnstcw_m2byte => Code.Fstcw_m2byte,
Code.Fneni => Code.Feni,
Code.Fndisi => Code.Fdisi,
Code.Fnclex => Code.Fclex,
Code.Fninit => Code.Finit,
Code.Fnsetpm => Code.Fsetpm,
Code.Fnsave_m94byte => Code.Fsave_m94byte,
Code.Fnsave_m108byte => Code.Fsave_m108byte,
Code.Fnstsw_m2byte => Code.Fstsw_m2byte,
Code.Fnstsw_AX => Code.Fstsw_AX,
_ => throw new InvalidOperationException(),
};
}
else
{
throw new InvalidOperationException();
}
}
}
else
{
var decoder = CreateDecoder(bitness, codeBytes, options);
instruction = decoder.Decode();
}
Assert.Equal(code, instruction.Code);
Assert.Equal(testCase.StackPointerIncrement, instruction.StackPointerIncrement);
var info = new InstructionInfoFactory().GetInfo(instruction);
Assert.Equal(testCase.Encoding, info.Encoding);
Assert.Equal(testCase.CpuidFeatures, info.CpuidFeatures);
Assert.Equal(testCase.RflagsRead, info.RflagsRead);
Assert.Equal(testCase.RflagsUndefined, info.RflagsUndefined);
Assert.Equal(testCase.RflagsWritten, info.RflagsWritten);
Assert.Equal(testCase.RflagsCleared, info.RflagsCleared);
Assert.Equal(testCase.RflagsSet, info.RflagsSet);
Assert.Equal(testCase.IsPrivileged, info.IsPrivileged);
Assert.Equal(testCase.IsProtectedMode, info.IsProtectedMode);
Assert.Equal(testCase.IsStackInstruction, info.IsStackInstruction);
Assert.Equal(testCase.IsSaveRestoreInstruction, info.IsSaveRestoreInstruction);
Assert.Equal(testCase.FlowControl, info.FlowControl);
Assert.Equal(testCase.Op0Access, info.Op0Access);
Assert.Equal(testCase.Op1Access, info.Op1Access);
Assert.Equal(testCase.Op2Access, info.Op2Access);
Assert.Equal(testCase.Op3Access, info.Op3Access);
Assert.Equal(testCase.Op4Access, info.Op4Access);
Assert.Equal(
new HashSet <UsedMemory>(testCase.UsedMemory, UsedMemoryEqualityComparer.Instance),
new HashSet <UsedMemory>(info.GetUsedMemory(), UsedMemoryEqualityComparer.Instance));
Assert.Equal(
new HashSet <UsedRegister>(GetUsedRegisters(testCase.UsedRegisters), UsedRegisterEqualityComparer.Instance),
new HashSet <UsedRegister>(GetUsedRegisters(info.GetUsedRegisters()), UsedRegisterEqualityComparer.Instance));
Static.Assert(IcedConstants.MaxOpCount == 5 ? 0 : -1);
Debug.Assert(instruction.OpCount <= IcedConstants.MaxOpCount);
for (int i = 0; i < instruction.OpCount; i++)
{
switch (i)
{
case 0:
Assert.Equal(testCase.Op0Access, info.GetOpAccess(i));
break;
case 1:
Assert.Equal(testCase.Op1Access, info.GetOpAccess(i));
break;
case 2:
Assert.Equal(testCase.Op2Access, info.GetOpAccess(i));
break;
case 3:
Assert.Equal(testCase.Op3Access, info.GetOpAccess(i));
break;
case 4:
Assert.Equal(testCase.Op4Access, info.GetOpAccess(i));
break;
default:
throw new InvalidOperationException();
}
}
for (int i = instruction.OpCount; i < IcedConstants.MaxOpCount; i++)
{
Assert.Equal(OpAccess.None, info.GetOpAccess(i));
}
Assert.Equal(RflagsBits.None, info.RflagsWritten & (info.RflagsCleared | info.RflagsSet | info.RflagsUndefined));
Assert.Equal(RflagsBits.None, info.RflagsCleared & (info.RflagsWritten | info.RflagsSet | info.RflagsUndefined));
Assert.Equal(RflagsBits.None, info.RflagsSet & (info.RflagsWritten | info.RflagsCleared | info.RflagsUndefined));
Assert.Equal(RflagsBits.None, info.RflagsUndefined & (info.RflagsWritten | info.RflagsCleared | info.RflagsSet));
Assert.Equal(info.RflagsWritten | info.RflagsCleared | info.RflagsSet | info.RflagsUndefined, info.RflagsModified);
var info2 = new InstructionInfoFactory().GetInfo(instruction, InstructionInfoOptions.None);
CheckEqual(ref info, ref info2, hasRegs2: true, hasMem2: true);
info2 = new InstructionInfoFactory().GetInfo(instruction, InstructionInfoOptions.NoMemoryUsage);
CheckEqual(ref info, ref info2, hasRegs2: true, hasMem2: false);
info2 = new InstructionInfoFactory().GetInfo(instruction, InstructionInfoOptions.NoRegisterUsage);
CheckEqual(ref info, ref info2, hasRegs2: false, hasMem2: true);
info2 = new InstructionInfoFactory().GetInfo(instruction, InstructionInfoOptions.NoRegisterUsage | InstructionInfoOptions.NoMemoryUsage);
CheckEqual(ref info, ref info2, hasRegs2: false, hasMem2: false);
Assert.Equal(info.Encoding, instruction.Code.Encoding());
#if ENCODER && OPCODE_INFO
Assert.Equal(code.ToOpCode().Encoding, instruction.Code.Encoding());
#endif
var cf = instruction.Code.CpuidFeatures();
if (cf.Length == 1 && cf[0] == CpuidFeature.AVX && instruction.Op1Kind == OpKind.Register && (code == Code.VEX_Vbroadcastss_xmm_xmmm32 || code == Code.VEX_Vbroadcastss_ymm_xmmm32 || code == Code.VEX_Vbroadcastsd_ymm_xmmm64))
{
cf = new[] { CpuidFeature.AVX2 }
}
;
Assert.Equal(info.CpuidFeatures, cf);
Assert.Equal(info.FlowControl, instruction.Code.FlowControl());
Assert.Equal(info.IsProtectedMode, instruction.Code.IsProtectedMode());
Assert.Equal(info.IsPrivileged, instruction.Code.IsPrivileged());
Assert.Equal(info.IsStackInstruction, instruction.Code.IsStackInstruction());
Assert.Equal(info.IsSaveRestoreInstruction, instruction.Code.IsSaveRestoreInstruction());
Assert.Equal(info.Encoding, instruction.Encoding);
Assert.Equal(info.CpuidFeatures, instruction.CpuidFeatures);
Assert.Equal(info.FlowControl, instruction.FlowControl);
Assert.Equal(info.IsProtectedMode, instruction.IsProtectedMode);
Assert.Equal(info.IsPrivileged, instruction.IsPrivileged);
Assert.Equal(info.IsStackInstruction, instruction.IsStackInstruction);
Assert.Equal(info.IsSaveRestoreInstruction, instruction.IsSaveRestoreInstruction);
Assert.Equal(info.RflagsRead, instruction.RflagsRead);
Assert.Equal(info.RflagsWritten, instruction.RflagsWritten);
Assert.Equal(info.RflagsCleared, instruction.RflagsCleared);
Assert.Equal(info.RflagsSet, instruction.RflagsSet);
Assert.Equal(info.RflagsUndefined, instruction.RflagsUndefined);
Assert.Equal(info.RflagsModified, instruction.RflagsModified);
}
void CheckEqual(ref InstructionInfo info1, ref InstructionInfo info2, bool hasRegs2, bool hasMem2)
{
if (hasRegs2)
{
Assert.Equal(info1.GetUsedRegisters(), info2.GetUsedRegisters(), UsedRegisterEqualityComparer.Instance);
}
else
{
Assert.Empty(info2.GetUsedRegisters());
}
if (hasMem2)
{
Assert.Equal(info1.GetUsedMemory(), info2.GetUsedMemory(), UsedMemoryEqualityComparer.Instance);
}
else
{
Assert.Empty(info2.GetUsedMemory());
}
Assert.Equal(info1.IsProtectedMode, info2.IsProtectedMode);
Assert.Equal(info1.IsPrivileged, info2.IsPrivileged);
Assert.Equal(info1.IsStackInstruction, info2.IsStackInstruction);
Assert.Equal(info1.IsSaveRestoreInstruction, info2.IsSaveRestoreInstruction);
Assert.Equal(info1.Encoding, info2.Encoding);
Assert.Equal(info1.CpuidFeatures, info2.CpuidFeatures);
Assert.Equal(info1.FlowControl, info2.FlowControl);
Assert.Equal(info1.Op0Access, info2.Op0Access);
Assert.Equal(info1.Op1Access, info2.Op1Access);
Assert.Equal(info1.Op2Access, info2.Op2Access);
Assert.Equal(info1.Op3Access, info2.Op3Access);
Assert.Equal(info1.Op4Access, info2.Op4Access);
Assert.Equal(info1.RflagsRead, info2.RflagsRead);
Assert.Equal(info1.RflagsWritten, info2.RflagsWritten);
Assert.Equal(info1.RflagsCleared, info2.RflagsCleared);
Assert.Equal(info1.RflagsSet, info2.RflagsSet);
Assert.Equal(info1.RflagsUndefined, info2.RflagsUndefined);
Assert.Equal(info1.RflagsModified, info2.RflagsModified);
}
IEnumerable <UsedRegister> GetUsedRegisters(IEnumerable <UsedRegister> usedRegisterIterator)
{
var read = new List <Register>();
var write = new List <Register>();
var condRead = new List <Register>();
var condWrite = new List <Register>();
foreach (var info in usedRegisterIterator)
{
switch (info.Access)
{
case OpAccess.Read:
read.Add(info.Register);
break;
case OpAccess.CondRead:
condRead.Add(info.Register);
break;
case OpAccess.Write:
write.Add(info.Register);
break;
case OpAccess.CondWrite:
condWrite.Add(info.Register);
break;
case OpAccess.ReadWrite:
read.Add(info.Register);
write.Add(info.Register);
break;
case OpAccess.ReadCondWrite:
read.Add(info.Register);
condWrite.Add(info.Register);
break;
case OpAccess.None:
case OpAccess.NoMemAccess:
default:
throw new InvalidOperationException();
}
}
foreach (var reg in GetRegisters(read))
{
yield return(new UsedRegister(reg, OpAccess.Read));
}
foreach (var reg in GetRegisters(write))
{
yield return(new UsedRegister(reg, OpAccess.Write));
}
foreach (var reg in GetRegisters(condRead))
{
yield return(new UsedRegister(reg, OpAccess.CondRead));
}
foreach (var reg in GetRegisters(condWrite))
{
yield return(new UsedRegister(reg, OpAccess.CondWrite));
}
}
IEnumerable <Register> GetRegisters(List <Register> regs)
{
if (regs.Count <= 1)
{
return(regs);
}
regs.Sort(RegisterSorter);
var hash = new HashSet <Register>();
int index;
foreach (var reg in regs)
{
if (Register.EAX <= reg && reg <= Register.R15D)
{
index = reg - Register.EAX;
if (hash.Contains(Register.RAX + index))
{
continue;
}
}
else if (Register.AX <= reg && reg <= Register.R15W)
{
index = reg - Register.AX;
if (hash.Contains(Register.RAX + index))
{
continue;
}
if (hash.Contains(Register.EAX + index))
{
continue;
}
}
else if (Register.AL <= reg && reg <= Register.R15L)
{
index = reg - Register.AL;
if (Register.AH <= reg && reg <= Register.BH)
{
index -= 4;
}
if (hash.Contains(Register.RAX + index))
{
continue;
}
if (hash.Contains(Register.EAX + index))
{
continue;
}
if (hash.Contains(Register.AX + index))
{
continue;
}
}
else if (Register.YMM0 <= reg && reg <= IcedConstants.YMM_last)
{
index = reg - Register.YMM0;
if (hash.Contains(Register.ZMM0 + index))
{
continue;
}
}
else if (Register.XMM0 <= reg && reg <= IcedConstants.XMM_last)
{
index = reg - Register.XMM0;
if (hash.Contains(Register.ZMM0 + index))
{
continue;
}
if (hash.Contains(Register.YMM0 + index))
{
continue;
}
}
hash.Add(reg);
}
foreach (var info in lowRegs)
{
if (hash.Contains(info.rl) && hash.Contains(info.rh))
{
hash.Remove(info.rl);
hash.Remove(info.rh);
hash.Add(info.rx);
}
}
return(hash);
}