public DebuggerCode(Debugger debugger, CorCode code) {
debugger.Dispatcher.VerifyAccess();
this.debugger = debugger;
CorCode = code;
hashCode = code.GetHashCode();
address = code.Address;
size = code.Size;
isIL = code.IsIL;
}
internal DnCodeBreakpoint(CorCode code, uint offset) {
Module = GetModule(code);
var func = code.Function;
Token = func?.Token ?? 0;
Offset = offset;
this.code = code;
}
internal DnCodeBreakpoint(SerializedDnModule module, uint token, uint offset)
{
this.module = module;
this.token = token;
this.offset = offset;
this.code = null;
}
internal DnCodeBreakpoint(CorCode code, uint offset)
{
this.module = GetModule(code);
var func = code.Function;
this.token = func == null ? 0 : func.Token;
this.offset = offset;
this.code = code;
}
/// <summary>
/// Function tries to bind a breakpoint to the specified module.
/// </summary>
/// <param name="managedModule">A module the breakpoint should be bound to.</param>
/// <returns>true if breakpoint was successfully bound or false if it failed or was already bound.</returns>
/// <remarks>
/// This function is called by breakpoint manager for every brekapoint whenever a new module
/// gets loaded into the debugged process or whenever a dynamic module loads a new class
/// or new symbols. This adds any missing bindings, but will not duplicate any that already exist.
/// </remarks>
public sealed override bool BindToModule(MDbgModule managedModule)
{
List <MDbgFunction> funcs;
int ILoffset;
// If we already bound a breakpoint in this module then nothing to do
if (m_breakpoints != null && m_breakpoints.ContainsKey(managedModule))
{
return(false);
}
// If we can't resolve the location in this module then there is nothing to do
if (!m_location.ResolveLocation(this, managedModule, out funcs, out ILoffset))
{
return(false);
}
// Use the resolved information to get a raw CorBreakpoint object.
CorFunctionBreakpoint breakpoint = null;
try
{
if (ILoffset == 0)
{
foreach (var func in funcs)
{
breakpoint = func.CorFunction.CreateBreakpoint();
SetupBreakpoint(breakpoint, managedModule);
}
}
else
{
foreach (var func in funcs)
{
// we need to set a breakpoint on code rather than directly on function
CorCode code = func.CorFunction.ILCode;
if (code == null)
{
throw new MDbgException(String.Format(CultureInfo.InvariantCulture, "IL Code for function {0} is null", new Object[] { func.FullName }));
}
breakpoint = code.CreateBreakpoint(ILoffset);
SetupBreakpoint(breakpoint, managedModule);
}
}
}
catch (NotImplementedException)
{
return(false);
}
catch (COMException)
{
return(false);
}
return(true);
}
public DebuggerCode(Debugger debugger, CorCode code)
{
debugger.Dispatcher.VerifyAccess();
this.debugger = debugger;
this.code = code;
this.hashCode = code.GetHashCode();
this.address = code.Address;
this.size = code.Size;
this.isIL = code.IsIL;
}
public ILVirtualDocument(MDbgFunction mdbgFunction)
{
CorCode ilCode = mdbgFunction.CorFunction.ILCode;
Debug.Assert(true == ilCode.IsIL);
byte[] code = ilCode.GetCode();
ILDisassembler.Disassemble(code, mdbgFunction.Module.Importer, out m_lines, out ip2lineMapping);
Debug.Assert(m_lines != null && ip2lineMapping != null);
m_functionName = mdbgFunction.FullName;
}
static void ProcessCommand(CorProcess process)
{
Task.Run(() =>
{
while (true)
{
Console.Write("> ");
String command = Console.ReadLine();
if (command.StartsWith("set-break", StringComparison.Ordinal))
{
// setting breakpoint
command = command.Remove(0, "set-break".Length).Trim();
// try module!type.method location (simple regex used)
Match match = methodBreakpointRegex.Match(command);
if (match.Groups["method"].Length > 0)
{
Console.Write("Setting method breakpoint... ");
CorFunction func = process.ResolveFunctionName(match.Groups["module"].Value, match.Groups["class"].Value,
match.Groups["method"].Value);
func.CreateBreakpoint().Activate(true);
Console.WriteLine("done.");
continue;
}
// try file code:line location
match = codeBreakpointRegex.Match(command);
if (match.Groups["filepath"].Length > 0)
{
Console.Write("Setting code breakpoint...");
int offset;
CorCode code = process.ResolveCodeLocation(match.Groups["filepath"].Value,
Int32.Parse(match.Groups["linenum"].Value),
out offset);
code.CreateBreakpoint(offset).Activate(true);
Console.WriteLine("done.");
continue;
}
}
else if (command.StartsWith("go", StringComparison.Ordinal))
{
process.Continue(false);
ProcessCommand(process);
break;
}
}
});
}
/// <summary>
/// Creates a native instruction breakpoint
/// </summary>
/// <param name="code">Native code</param>
/// <param name="offset">Offset</param>
/// <param name="cond">Condition</param>
/// <returns></returns>
public DnNativeCodeBreakpoint CreateNativeBreakpoint(CorCode code, uint offset, Func<NativeCodeBreakpointConditionContext, bool> cond) {
DebugVerifyThread();
var bp = new DnNativeCodeBreakpoint(code, offset, cond);
var module = code.Function?.Module?.DnModuleId ?? new DnModuleId();
nativeCodeBreakpointList.Add(module, bp);
foreach (var dnMod in GetLoadedDnModules(module))
bp.AddBreakpoint(dnMod);
return bp;
}
/// <summary>
/// Function tries to bind a breakpoint to the specified module.
/// </summary>
/// <param name="managedModule">A module the breakpoint should be bound to.</param>
/// <returns>true if breakpoint was successfully bound or false if it failed or was already bound.</returns>
/// <remarks>
/// This function is called by breakpoint manager for every brekapoint whenever a new module
/// gets loaded into the debugged process or whenever a dynamic module loads a new class
/// or new symbols. This adds any missing bindings, but will not duplicate any that already exist.
/// </remarks>
public sealed override bool BindToModule(MDbgModule managedModule)
{
MDbgFunction func;
int ILoffset;
// If we already bound a breakpoint in this module then nothing to do
if (m_breakpoints != null && m_breakpoints.ContainsKey(managedModule))
{
return(false);
}
// If we can't resolve the location in this module then there is nothing to do
if (!m_location.ResolveLocation(this, managedModule, out func, out ILoffset))
{
return(false);
}
// Use the resolved information to get a raw CorBreakpoint object.
CorFunctionBreakpoint breakpoint = null;
try
{
if (ILoffset == 0)
{
breakpoint = func.CorFunction.CreateBreakpoint();
}
else
{
// we need to set a breakpoint on code rather than directly on function
CorCode code = func.CorFunction.ILCode;
if (code == null)
{
throw new MDbgException(String.Format(CultureInfo.InvariantCulture, "IL Code for function {0} is null", new Object[] { func.FullName }));
}
breakpoint = code.CreateBreakpoint(ILoffset);
}
}
catch (NotImplementedException)
{
return(false);
}
catch (COMException)
{
return(false);
}
// Add the new CorBreakpoint object to our internal list and register a handler for it.
Debug.Assert(breakpoint != null);
breakpoint.Activate(true);
if (m_breakpoints == null)
{
m_breakpoints = new Dictionary <MDbgModule, CorFunctionBreakpoint>();
}
m_breakpoints.Add(managedModule, breakpoint);
MDbgProcess p = managedModule.Process;
CustomBreakpointEventHandler handler = new CustomBreakpointEventHandler(this.InternalOnHitHandler);
p.RegisterCustomBreakpoint(breakpoint, handler);
return(true);
}
public override DbgCodeLocation Clone() => owner.Create(DbgModule, Module, Token, Offset, ILOffsetMapping, NativeAddress.Address, NativeAddress.Offset, CorCode.AddRef());
internal DnCodeBreakpoint(DnModuleId module, uint token, uint offset) {
Module = module;
Token = token;
Offset = offset;
code = null;
}
internal DnNativeCodeBreakpoint CreateNativeBreakpointForGetReturnValue(CorCode code, uint offset, Action <CorThread> callback)
{
debuggerThread.VerifyAccess();
return(dnDebugger.CreateNativeBreakpoint(code, offset, ctx => { callback(ctx.E.CorThread); return false; }));
}
/// <summary>
/// Function tries to bind a breakpoint to the specified module.
/// </summary>
/// <param name="managedModule">A module the breakpoint should be bound to.</param>
/// <returns>true if breakpoint was successfully bound or false if it failed or was already bound.</returns>
/// <remarks>
/// This function is called by breakpoint manager for every brekapoint whenever a new module
/// gets loaded into the debugged process or whenever a dynamic module loads a new class
/// or new symbols. This adds any missing bindings, but will not duplicate any that already exist.
/// </remarks>
public sealed override bool BindToModule(MDbgModule managedModule)
{
MDbgFunction func;
int ILoffset;
// Note that in some cases (eg. source/line breakpoints) we may actually
// want to bind to multiple locations in this module instead of just one.
if (!m_location.ResolveLocation(this, managedModule, out func, out ILoffset))
{
return(false);
}
if (m_breakpoints != null)
{
// Assume all breakpoints are CorFunctionBreakpoints.
// If this ever becomes invalid, we'll need a new check here to avoid
// duplicating that type of breakpoint.
foreach (CorFunctionBreakpoint cb in m_breakpoints)
{
// If we find a CorBreakpoint that already matches this location
// don't add a new one, or the debugger will stop twice when it's hit.
// Note that CorFunction instances are 1:1 with a specific function in a
// specific module and AppDomain (but represents all generic instantiations).
if (cb.Function == func.CorFunction && cb.Offset == ILoffset)
{
return(false);
}
}
}
// Use the resolved information to get a raw CorBreakpoint object.
CorBreakpoint breakpoint = null;
try
{
if (ILoffset == 0)
{
breakpoint = func.CorFunction.CreateBreakpoint();
}
else
{
// we need to set a breakpoint on code rather than directly on function
CorCode code = func.CorFunction.ILCode;
if (code == null)
{
throw new MDbgException(String.Format(CultureInfo.InvariantCulture, "IL Code for function {0} is null", new Object[] { func.FullName }));
}
breakpoint = code.CreateBreakpoint(ILoffset);
}
}
catch (COMException)
{
return(false);
}
// Add the new CorBreakpoint object to our internal list and register a handler for it.
Debug.Assert(breakpoint != null);
breakpoint.Activate(true);
if (m_breakpoints == null)
{
m_breakpoints = new ArrayList();
}
m_breakpoints.Add(breakpoint);
MDbgProcess p = managedModule.Process;
CustomBreakpointEventHandler handler = new CustomBreakpointEventHandler(this.InternalOnHitHandler);
p.RegisterCustomBreakpoint(breakpoint, handler);
return(true);
}
public static void ILDasmCmd(string args)
{
// Provides disassembly of IL opcodes.
ArgParser ap = new ArgParser(args);
if (ap.Count > 1)
{
WriteError("Wrong # of arguments.");
return;
}
MDbgFrame functionFrame = null;
MDbgFunction function = null;
if (ap.Exists(0))
{
function = Debugger.Processes.Active.ResolveFunctionNameFromScope(ap.AsString(0));
if (function == null)
{
throw new MDbgShellException("no such function.");
}
}
else
{
functionFrame = Debugger.Processes.Active.Threads.Active.CurrentFrame;
function = functionFrame.Function;
}
CorCode ilCode = function.CorFunction.ILCode;
//CorMetadataImport importer = functionFrame.Function.Module.Importer;
Debug.Assert(true == ilCode.IsIL);
WriteOutput("code size: " + ilCode.Size);
ILVirtualDocument doc = new ILVirtualDocument(function);
int currentLine;
if (functionFrame != null)
{
// we have frame and therefore we should show current location
uint ip;
CorDebugMappingResult mappingResult;
functionFrame.CorFrame.GetIP(out ip, out mappingResult);
WriteOutput("current IL-IP: " + ip);
WriteOutput("mapping: " + mappingResult.ToString());
WriteOutput("URL: " + doc.Path);
currentLine = doc.Ip2LineNo((int)ip);
}
else
{
// no current IP.
currentLine = -1;
}
for (int i = 0; i < doc.Count; i++)
{
if (i == currentLine)
{
WriteOutput("* " + doc[i]);
}
else
{
WriteOutput(" " + doc[i]);
}
}
}
internal DnNativeCodeBreakpoint(CorCode code, uint offset, Func<NativeCodeBreakpointConditionContext, bool> cond)
: base(code, offset) {
Condition = cond ?? defaultCond;
}
static DnModuleId GetModule(CorCode code) => code.Function?.Module?.DnModuleId ?? new DnModuleId();
bool TryGetNativeCodeCore(CorCode code, DmdMethodBase reflectionMethod, out DbgDotNetNativeCode nativeCode)
{
nativeCode = default;
if (code == null)
{
return(false);
}
var process = code.Function?.Module?.Process;
if (process == null)
{
return(false);
}
// The returned chunks are sorted
var chunks = code.GetCodeChunks();
if (chunks.Length == 0)
{
return(false);
}
int totalLen = 0;
foreach (var chunk in chunks)
{
totalLen += (int)chunk.Length;
}
var allCodeBytes = new byte[totalLen];
int currentPos = 0;
foreach (var chunk in chunks)
{
int hr = process.ReadMemory(chunk.StartAddr, allCodeBytes, currentPos, (int)chunk.Length, out int sizeRead);
if (hr < 0 || sizeRead != (int)chunk.Length)
{
return(false);
}
currentPos += (int)chunk.Length;
}
Debug.Assert(currentPos == totalLen);
// We must get IL to native mappings before we get var homes, or the var
// homes array will be empty.
var map = code.GetILToNativeMapping();
var varHomes = code.GetVariables();
Array.Sort(varHomes, (a, b) => {
int c = a.StartOffset.CompareTo(b.StartOffset);
if (c != 0)
{
return(c);
}
return(a.Length.CompareTo(b.Length));
});
for (int i = 0, chunkIndex = 0, chunkOffset = 0; i < varHomes.Length; i++)
{
var startOffset = varHomes[i].StartOffset;
while (chunkIndex < chunks.Length)
{
if (startOffset < (uint)chunkOffset + chunks[chunkIndex].Length)
{
break;
}
chunkOffset += (int)chunks[chunkIndex].Length;
chunkIndex++;
}
Debug.Assert(chunkIndex < chunks.Length);
if (chunkIndex >= chunks.Length)
{
varHomes = Array.Empty <VariableHome>();
break;
}
varHomes[i].StartOffset += chunks[chunkIndex].StartAddr - (uint)chunkOffset;
}
Array.Sort(varHomes, (a, b) => {
int c = a.SlotIndex.CompareTo(b.SlotIndex);
if (c != 0)
{
return(c);
}
c = a.ArgumentIndex.CompareTo(b.ArgumentIndex);
if (c != 0)
{
return(c);
}
c = a.StartOffset.CompareTo(b.StartOffset);
if (c != 0)
{
return(c);
}
return(a.Length.CompareTo(b.Length));
});
Array.Sort(map, (a, b) => {
int c = a.nativeStartOffset.CompareTo(b.nativeStartOffset);
if (c != 0)
{
return(c);
}
return(a.nativeEndOffset.CompareTo(b.nativeEndOffset));
});
totalLen = 0;
for (int i = 0; i < chunks.Length; i++)
{
chunks[i].StartAddr -= (uint)totalLen;
totalLen += (int)chunks[i].Length;
}
var blocks = new DbgDotNetNativeCodeBlock[map.Length];
ulong baseAddress = chunks[0].StartAddr;
uint chunkByteOffset = 0;
for (int i = 0, chunkIndex = 0; i < blocks.Length; i++)
{
var info = map[i];
bool b = info.nativeEndOffset <= (uint)allCodeBytes.Length && info.nativeStartOffset <= info.nativeEndOffset && chunkIndex < chunks.Length;
Debug.Assert(b);
if (!b)
{
return(false);
}
int codeLen = (int)(info.nativeEndOffset - info.nativeStartOffset);
var rawCode = new ArraySegment <byte>(allCodeBytes, (int)info.nativeStartOffset, codeLen);
ulong address = baseAddress + info.nativeStartOffset;
if ((CorDebugIlToNativeMappingTypes)info.ilOffset == CorDebugIlToNativeMappingTypes.NO_MAPPING)
{
blocks[i] = new DbgDotNetNativeCodeBlock(NativeCodeBlockKind.Unknown, address, rawCode, -1);
}
else if ((CorDebugIlToNativeMappingTypes)info.ilOffset == CorDebugIlToNativeMappingTypes.PROLOG)
{
blocks[i] = new DbgDotNetNativeCodeBlock(NativeCodeBlockKind.Prolog, address, rawCode, -1);
}
else if ((CorDebugIlToNativeMappingTypes)info.ilOffset == CorDebugIlToNativeMappingTypes.EPILOG)
{
blocks[i] = new DbgDotNetNativeCodeBlock(NativeCodeBlockKind.Epilog, address, rawCode, -1);
}
else
{
blocks[i] = new DbgDotNetNativeCodeBlock(NativeCodeBlockKind.Code, address, rawCode, (int)info.ilOffset);
}
chunkByteOffset += (uint)codeLen;
for (;;)
{
if (chunkIndex >= chunks.Length)
{
if (i + 1 == blocks.Length)
{
break;
}
Debug.Assert(false);
return(false);
}
if (chunkByteOffset < chunks[chunkIndex].Length)
{
break;
}
chunkByteOffset -= chunks[chunkIndex].Length;
chunkIndex++;
if (chunkIndex < chunks.Length)
{
baseAddress = chunks[chunkIndex].StartAddr;
}
}
}
NativeCodeOptimization optimization;
switch (code.CompilerFlags)
{
case CorDebugJITCompilerFlags.CORDEBUG_JIT_DEFAULT:
optimization = NativeCodeOptimization.Optimized;
break;
case CorDebugJITCompilerFlags.CORDEBUG_JIT_DISABLE_OPTIMIZATION:
case CorDebugJITCompilerFlags.CORDEBUG_JIT_ENABLE_ENC:
optimization = NativeCodeOptimization.Unoptimized;
break;
default:
Debug.Fail($"Unknown optimization: {code.CompilerFlags}");
optimization = NativeCodeOptimization.Unknown;
break;
}
NativeCodeInfo codeInfo = null;
NativeCodeKind codeKind;
switch (Runtime.Process.Machine)
{
case DbgMachine.X64:
case DbgMachine.X86:
codeKind = Runtime.Process.Machine == DbgMachine.X86 ? NativeCodeKind.X86_32 : NativeCodeKind.X86_64;
var x86Variables = CreateVariablesX86(varHomes) ?? Array.Empty <X86Variable>();
if (x86Variables.Length != 0)
{
codeInfo = new X86NativeCodeInfo(x86Variables);
}
break;
case DbgMachine.Arm:
codeKind = NativeCodeKind.Arm;
Debug.Fail("Create variables like x86/x64 code above");
break;
case DbgMachine.Arm64:
codeKind = NativeCodeKind.Arm64;
Debug.Fail("Create variables like x86/x64 code above");
break;
default:
Debug.Fail($"Unsupported machine: {Runtime.Process.Machine}");
return(false);
}
var methodName = reflectionMethod?.ToString();
nativeCode = new DbgDotNetNativeCode(codeKind, optimization, blocks, codeInfo, methodName);
return(true);
}
internal VirtualSourceViewerForm(MainForm parent, MDbgFunction function)
{
m_function = function;
Debug.Assert(function != null);
// Now actually right in text. do this first so that we can get the current font.
BeginInit(parent);
// Get fonts
FontCache cache;
{
Font fontCurrent = richText.Font;
var emphasis = new Font(
fontCurrent.FontFamily,
fontCurrent.Size,
FontStyle.Bold
);
cache = new FontCache(emphasis);
}
// Underlying writer to the window.
var rawWriter = new RawWriter(cache);
// Il2Native mapping can be used to find out what IL offsets we can actually stop on.
Il2NativeIterator il2nativeIterator = null;
// Actual IL disassembly in string form.
ILDasmIterator ilDasm = null;
// Iterator through sequence points and source files.
SequencePointIterator seqIterator = null;
string fullName = "?";
int token = 0;
ulong nativeStartAddress = 0;
CorDebugJITCompilerFlags codeFlags = CorDebugJITCompilerFlags.CORDEBUG_JIT_DEFAULT;
// Make cross-thread call to worker thread to collect raw information.
// This needs to access MDbg and so can't be done on our UI thread.
parent.ExecuteOnWorkerThreadIfStoppedAndBlock(delegate(MDbgProcess proc)
{
Debug.Assert(proc != null);
Debug.Assert(!proc.IsRunning);
Debug.Assert(function.Module.Process == proc);
// Get some properties about this function to display.
token = function.CorFunction.Token;
nativeStartAddress =
function.CorFunction.NativeCode.Address;
codeFlags =
function.CorFunction.NativeCode.CompilerFlags;
CorCode ilCode = function.CorFunction.ILCode;
Debug.Assert(ilCode.IsIL);
byte[] code = ilCode.GetCode();
fullName = function.FullName;
// This does the real disassembly work.
string[] lines = null; // strings of IL.
ILDisassembler.Disassemble(code,
function.Module.Importer,
out lines,
out m_il2RowMapping);
ilDasm = new ILDasmIterator(rawWriter, m_il2RowMapping,
lines);
IL2NativeMap[] il2nativeMapping =
function.CorFunction.NativeCode.
GetILToNativeMapping();
il2nativeIterator = new Il2NativeIterator(rawWriter,
il2nativeMapping,
code);
// Get sequence points
ISymbolMethod symMethod = function.SymMethod;
// Sequence point information
int[] seqIlOffsets = null;
string[] seqPaths = null;
int[] seqStartLines = null,
seqEndLines = null,
seqStartColumns = null,
seqEndColumns = null;
int seqCount = 0;
if (symMethod != null)
{
seqCount = symMethod.SequencePointCount;
seqIlOffsets = new int[seqCount];
var seqDocuments = new ISymbolDocument[seqCount];
seqPaths = new string[seqCount];
seqStartLines = new int[seqCount];
seqEndLines = new int[seqCount];
seqStartColumns = new int[seqCount];
seqEndColumns = new int[seqCount];
symMethod.GetSequencePoints(seqIlOffsets,
seqDocuments,
seqStartLines,
seqStartColumns,
seqEndLines,
seqEndColumns);
for (int i = 0; i < seqCount; i++)
{
seqPaths[i] = seqDocuments[i].URL;
}
}
seqIterator = new SequencePointIterator(rawWriter,
parent,
seqIlOffsets,
seqPaths,
seqStartLines,
seqStartColumns,
seqEndLines,
seqEndColumns);
}
); // end worker call
// We assume sequence points are sorted by IL offset. We assert that in the iterators below.
// Now we need to go through and stitch the IL + Source together.
// This also works even if we have no source (since that's just the degenerate case of 0 sequence points)
// Print out header information
Debug.Assert(token != 0);
rawWriter.WriteLine(String.Format(CultureInfo.InvariantCulture,
"> Function name:{0} (token={1:x})", fullName, token));
rawWriter.WriteLine(String.Format(CultureInfo.InvariantCulture,
"> Native Code Address =0x{0:x}, flags={1}", nativeStartAddress, codeFlags));
// Walk through the IL in order and write out interleaved IL and Sequence Points.
while (!seqIterator.IsDone)
{
// Add IL snippets that occur before this sequence point.
WriteIlAndNative(ilDasm, il2nativeIterator, seqIterator.IlOffset);
seqIterator.WriteSource();
seqIterator.Next();
}
// Write the IL that's after the last sequence point
WriteIlAndNative(ilDasm, il2nativeIterator, ilDasm.IlLength);
// Set the text.
InitLines(null, rawWriter.Lines, rawWriter.FormatList);
EndInit(fullName);
}
protected override void CloseCore(DbgDispatcher dispatcher) => CorCode.Close();
static SerializedDnModule GetModule(CorCode code)
{
var func = code.Function;
uint token = func == null ? 0 : func.Token;
var mod = func == null ? null : func.Module;
return mod == null ? new SerializedDnModule() : mod.SerializedDnModule;
}