public void Do()
{
BinObjectFileFormat format = new BinObjectFileFormat();
var arch = new X86Architecture(CpuType.AmdBulldozer, DataSize.Bit32);
BinObjectFile objectFile = (BinObjectFile)format.CreateObjectFile(arch, "helloworld");
Section textSection = objectFile.Sections.AddNew(SectionType.Program);
var text = textSection.Contents;
text.Add(new Label("main"));
text.Add(new Mov(Register.EDX, new Reference("len")));
text.Add(new Mov(Register.ECX, new Reference("str")));
text.Add(new Mov(Register.EBX, 1));
text.Add(new Mov(Register.EAX, 4));
text.Add(new Int(0x80));
text.Add(new Mov(Register.EBX, 0));
text.Add(new Mov(Register.EAX, 1));
text.Add(new Int(0x80));
Section dataSection = objectFile.Sections.AddNew(SectionType.Data);
var data = dataSection.Contents;
data.Add(new Label("str"));
data.Add(new DeclareString("Hello World\n"));
data.Add(new Define("len", (context) =>
{
Symbol strSymbol = context.SymbolTable["str"];
return new SimpleExpression(context.Address - strSymbol.Value);
}));
byte[] result = Assemble(objectFile);
byte[] expected = new byte[]{
0xBA, 0x0C, 0x00, 0x00, 0x00, // mov EDX, len
0xB9, 0x30, 0x00, 0x00, 0x00, // mov ECX, str
0xBB, 0x01, 0x00, 0x00, 0x00, // mov EBX, 1
0xB8, 0x04, 0x00, 0x00, 0x00, // mov EAX, 4
0xCD, 0x80, // int 0x80
0xBB, 0x00, 0x00, 0x00, 0x00, // mov EBX, 0
0xB8, 0x01, 0x00, 0x00, 0x00, // mov EAX, 1
0xCD, 0x80, // int 0x80
// Padding
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// "Hello World\n"
0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x0A
};
Assert.AreEqual(expected, result);
}
public void CreateContextTest()
{
BinObjectFileFormat format = new BinObjectFileFormat();
var arch = new X86Architecture();
BinObjectFile objectFile = (BinObjectFile)format.CreateObjectFile(arch, "test");
var context = arch.CreateContext(objectFile);
Assert.IsNotNull(context);
Assert.IsInstanceOf<Context>(context);
Assert.AreEqual(objectFile, context.Representation);
}
/// <summary>
/// Assembles the given instruction.
/// </summary>
/// <param name="instruction">The <see cref="X86Instruction"/> instance to test.</param>
/// <param name="nasmInstruction">The NASM string representation of the same instruction.</param>
/// <param name="mode">The mode (16-bit, 32-bit or 64-bit) to use.</param>
/// <returns>A (expected, actual) tuple.</returns>
private Tuple<byte[], byte[]> AssembleInstruction(X86Instruction instruction, string nasmInstruction, DataSize mode)
{
#region Contract
if (!Enum.IsDefined(typeof(DataSize), mode))
throw new InvalidEnumArgumentException("mode", (int)mode, typeof(DataSize));
if (mode != DataSize.Bit16 && mode != DataSize.Bit32 && mode != DataSize.Bit64)
throw new ArgumentException(null, "mode");
#endregion
// Assemble the NASM instruction.
byte[] expected = null;
if (nasmInstruction != null)
{
StringBuilder sb = new StringBuilder();
switch (mode)
{
case DataSize.Bit16:
sb.AppendLine("[BITS 16]");
break;
case DataSize.Bit32:
sb.AppendLine("[BITS 32]");
break;
case DataSize.Bit64:
sb.AppendLine("[BITS 64]");
break;
default:
throw new NotSupportedException();
}
sb.AppendLine(nasmInstruction);
string feedback;
expected = RunAssembler(sb.ToString(), out feedback);
if (feedback != null && feedback.Length > 0)
{
Console.WriteLine("Assembler feedback:");
Console.WriteLine(feedback);
}
}
// Assemble the SharpAssembler instruction.
byte[] actual = null;
if (instruction != null)
{
BinObjectFileFormat format = new BinObjectFileFormat();
var arch = new X86Architecture(CpuType.AmdBulldozer, mode);
BinObjectFile objectFile = (BinObjectFile)format.CreateObjectFile(arch, "test");
Section textSection = objectFile.Sections.AddNew(SectionType.Program);
var text = textSection.Contents;
text.Add(instruction);
try
{
using (MemoryStream ms = new MemoryStream())
{
using (BinaryWriter writer = new BinaryWriter(ms))
{
objectFile.Format.CreateAssembler(objectFile).Assemble(writer);
actual = ms.ToArray();
}
}
}
catch (AssemblerException ex)
{
Console.WriteLine(ex);
actual = null;
}
}
return new Tuple<byte[], byte[]>(expected, actual);
}
public void Do2()
{
BinObjectFileFormat format = new BinObjectFileFormat();
var arch = new X86Architecture(CpuType.AmdBulldozer, DataSize.Bit32);
BinObjectFile objectFile = (BinObjectFile)format.CreateObjectFile(arch, "helloworld");
Section textSection = objectFile.Sections.AddNew(SectionType.Program);
var text = textSection.Contents;
text.Add(new Label("main"));
text.Add(new Mov(Register.EDX, new Reference("len")));
text.Add(new Mov(Register.ECX, new Reference("str")));
text.Add(new Mov(Register.EBX, 1));
text.Add(new Mov(Register.EAX, 4));
text.Add(new Int(0x80));
text.Add(new Mov(Register.EBX, 0));
text.Add(new Mov(Register.EAX, 1));
text.Add(new Int(0x80));
Section dataSection = objectFile.Sections.AddNew(SectionType.Data);
var data = dataSection.Contents;
data.Add(new Label("str"));
data.Add(new DeclareString("Hello World\n"));
data.Add(new Define("len", (context) =>
{
Symbol strSymbol = context.SymbolTable["str"];
return new SimpleExpression(context.Address - strSymbol.Value);
}));
using (FileStream fs = File.Create("helloworld.bin"))
using (BinaryWriter writer = new BinaryWriter(fs))
objectFile.Format.CreateAssembler(objectFile).Assemble(writer);
}
/// <summary>
/// Assembles the given instruction.
/// </summary>
/// <param name="instruction">The <see cref="X86Instruction"/> to assemble.</param>
/// <param name="mode">The mode in which to assemble.</param>
/// <returns>The bytes representing the assembled instruction.</returns>
/// <exception cref="AssemblerException">
/// An assembler exception occurred.
/// </exception>
private byte[] Assemble(X86Instruction instruction, DataSize mode)
{
byte[] actual = null;
BinObjectFileFormat format = new BinObjectFileFormat();
var arch = new X86Architecture(CpuType.AmdBulldozer, mode);
BinObjectFile objectFile = (BinObjectFile)format.CreateObjectFile(arch, "test");
Section textSection = objectFile.Sections.AddNew(SectionType.Program);
var text = textSection.Contents;
text.Add(instruction);
using (MemoryStream ms = new MemoryStream())
{
using (BinaryWriter writer = new BinaryWriter(ms))
{
objectFile.Format.CreateAssembler(objectFile).Assemble(writer);
actual = ms.ToArray();
}
}
return actual;
}